CABLETRON SYSTEMS INC
10-Q, 1998-01-14
COMPUTER COMMUNICATIONS EQUIPMENT
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington , D.C. 20549

                                    Form 10-Q

                 [X] QUARTERLY REPORT UNDER SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                     For the Quarter Ended November 30, 1997

             [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                         Commission File Number 1-10228

                             CABLETRON SYSTEMS, INC.
             (Exact name of registrant as specified in its charter)

                       Delaware 04-2797263 (State or other
         jurisdiction of (I.R.S. Employer incorporation or organization)
                               identification no.)


                35 Industrial Way, Rochester, New Hampshire 03867
              (Address of principal executive offices and Zip Code)


       Registrant's telephone number, including area code: (603) 332-9400

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months,  (or for such shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                                YES - X NO -

As of December 31, 1997 there were 158,207,514 shares of the Registrant's common
stock outstanding.

This document contains 136 pages

Exhibit index on page 11


<PAGE>


                                    INDEX

                           CABLETRON SYSTEMS, INC.
                                                                      Page

   Facing Page                                                          1

   Index                                                                2-3


   PART I. FINANCIAL INFORMATION

   Item 1. Financial Statements

   Consolidated Balance Sheets - November 30, 1997 (unaudited) 
   and February 28, 1997                                                4

   Consolidated  Statements of Income - Three and nine months 
   ended November 30, 1997, and 1996 (unaudited)                        5
  
   Consolidated  Statements of Cash Flows - Nine months ended 
   November 30, 1997 and 1996 (unaudited)                               6

   Notes to Consolidated Financial Statements - November 30, 1997       7-8

   Item 2. Management's Discussion and Analysis of Financial 
   Condition and Results of Operations                                  9-12

   Item 3. Qualitative Disclosures About Market Risk                    12

   PART II. OTHER INFORMATION

   Item 1. Legal Proceedings                                            12

   Item 6. Exhibits and Reports on Form 8-K                             13 

   Signatures                                                           14

   Index to the Exhibits                                                15
                     
   Exhibit 11.1  Statement re: Computation of Per Share Earnings        137   



* Confidential  Treatment request as to certain portions. The term "Confidential
Treatment" and the mark "*" as used throughout the indicated  exhibit means that
material has been omitted and separately filed with the Commission.


<PAGE>


PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

CABLETRON SYSTEMS, INC.

CONSOLIDATED BALANCE SHEETS
(in thousands of dollars)

                                                     (unaudited)

                                                    November 30,    February 28,
                                                            1997            1997
Assets

Current Assets:
     Cash and cash equivalents ...................     $  206,926     $  214,828
     Short-term investments ......................        214,680        165,396
     Accounts receivable, net ....................        298,672        219,896
     Inventories .................................        280,021        197,438
     Deferred income taxes .......................         57,691         57,107
     Prepaid expenses and other assets ...........         37,521         35,925
                                                       ----------     ----------
          Total current assets ...................      1,095,511        890,590
Long-term investments ............................        148,554        188,081
Property, plant and equipment, net ...............        212,023        198,557
Long-term deferred income taxes ..................         30,756         29,627
                                                       ----------     ----------
Total assets .....................................     $1,486,844     $1,306,855
                                                       ==========     ==========

Liabilities and Stockholders' Equity

Current liabilities:
     Accounts payable ............................     $   69,003     $   68,604
     Accrued expenses ............................        169,333        135,208
     Income taxes payable ........................          5,282         10,442
                                                       ----------     ----------
          Total current liabilities ..............        243,618        214,254
                                                       ----------     ----------
Deferred income taxes ............................          4,577         11,103
                                                       ----------     ----------
Total liabilities ................................        248,195        225,357
                                                       ----------     ----------
Stockholders' equity:
     Preferred stock, $1.00 par value
       Authorized 2,000 shares; none issued ......           --             -- 
     Common stock $0.01 par value
       Authorized 240,000 shares; issued and
       outstanding 158,208 and 156,305
       respectively ..............................          1,582          1,563
     Additional paid-in capital ..................        287,218        266,829
     Retained earnings ...........................        949,194        812,885
                                                       ----------     ----------
                                                        1,237,993      1,081,277
     Cumulative translation adjustment ...........            656            221
                                                       ----------     ----------
Total stockholders' equity .......................      1,238,649      1,081,498
                                                       ----------     ----------
Total liabilities and stockholders' equity .......     $1,486,844     $1,306,855
                                                       ==========     ==========





<PAGE>

<TABLE>

CABLETRON SYSTEMS, INC.
CONSOLIDATED STATEMENTS OF INCOME
(in thousands of dollars except per share amounts)

<CAPTION>

                                                         (unaudited)
                                        Three Months Ended          Nine Months Ended

                                              November 30,              November 30,
                                          1997        1996          1997         1996
                                          ----        ----          ----         ----
<S>                                    <C>        <C>         <C>          <C>    

Net sales ..........................   $331,827   $361,558    $1,065,808   $1,025,997
Cost of sales ......................    164,254    147,598       476,847      419,307
                                       --------   --------    ----------   ----------
     Gross profit ..................    167,573    213,960       588,961      606,690
                                       --------   --------    ----------   ----------
Operating expenses:
     Research and development ......     46,552     41,139       134,583      119,444
     Selling, general and
      administrative ...............     95,521     73,792       261,848      209,380

     Nonrecurring items ............         --         --            --       43,024
                                       --------   --------    ----------   ----------
         Total operating expenses ..    142,073    114,931       396,431      371,848
                                       --------   --------    ----------   ----------
          Income from operations ...     25,500     99,029       192,530      234,842
Interest income, net ...............      4,648      4,932        14,269       14,254
                                       --------   --------    ----------   ----------
          Income before income taxes     30,148    103,961       206,799      249,096
Income taxes .......................     10,250     36,219        70,490       87,307
                                       --------   --------    ----------   ----------
Net income .........................   $ 19,898   $ 67,742    $  136,309   $  161,789
                                       ========   ========    ==========   ==========
Net income per common share ........   $   0.13   $   0.44    $    0.87    $     1.04
                                       ========   ========    ==========   ==========
Weighted average number of shares
outstanding ........................    157,986    155,299      157,527       154,968
                                       ========   ========    =========    ==========

</TABLE>









<PAGE>



CABLETRON SYSTEMS, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands of dollars)
                                                         (unaudited)

                                                      Nine Months Ended
                                                         November  30,
                                                       1997         1996
                                                       ----         ----

Cash flows from operating activities:
   Net income .................................    $136,309     $161,789
   Adjustments to reconcile net income to
   net cash provided by operating activities:
       Depreciation and amortization ..........      50,205       37,332
       Provision for losses on accounts
        receivable ............................       1,098        7,276
       Deferred income taxes ..................      (8,239)     (19,376)
      (Gain)/loss on disposal of property  ....        (446)          83
       Changes in assets and liabilities:
          Accounts receivable .................     (82,031)     (72,431)
          Inventories .........................     (84,233)     (18,086)
          Prepaid expenses and other assets ...      (1,755)      (2,499)
          Accounts payable and accrued expenses      39,244       38,337
          Income taxes payable ................      (4,892)      (1,148)
                                                   --------     --------
      Net cash provided by operating activities      45,260      131,277
                                                   --------     --------
Cash flows from investing activities:
   Capital expenditures .......................     (64,037)     (69,419)
   Purchase of available-for-sale securities ..     (86,478)    (169,349)
   Purchase of held-to-maturity securities ....     (37,228)    (170,595)
   Maturities of marketable securities ........     113,943      326,729
                                                   --------     --------
      Net cash used in investing activities ...     (73,800)     (82,634)
                                                   --------     --------
Cash flows from financing activities:
   Common stock issued to employee stock
    purchase plan .............................       3,311        3,019
   Net proceeds from sale of stock ............          --        8,580
   Repayment of notes from stockholders .......          --       (2,155)
   Proceeds from stock option exercise ........      17,097       13,110
   Repurchase of common stock .................          --          544
                                                   --------     --------
      Net cash provided by financing activities      20,408       23,098
                                                   --------     --------

Effect of exchange rate changes on cash .......         230           49
                                                   --------     --------
Net (decrease) increase in cash and cash
 equivalents ..................................      (7,902)      71,790
Cash and cash equivalents, beginning of period      214,828      106,101
                                                   --------     --------
Cash and cash equivalents, end of period ......    $206,926     $177,891
                                                   ========     ========

Cash paid during the year for:
   Income taxes ...............................    $ 46,109     $101,318
                                                   ========     ========





<PAGE>


NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

1.   Basis of presentation

The accompanying unaudited financial statements have been prepared in accordance
with the instructions to Form 10-Q and Article 2 of Regulation S-X. Accordingly,
they do not include all of the information  and footnotes  required by generally
accepted accounting principles for complete financial statements. In the opinion
of management, all adjustments consisting of normal recurring accruals necessary
for a fair  presentation  of the results of operations  for the interim  periods
presented have been reflected herein.  The results of operations for the interim
periods are not  necessarily  indicative  of the results to be expected  for the
entire year. The accompanying financial statements should be read in conjunction
with the consolidated financial statements and footnotes thereto included in the
Company's Annual Report on Form 10-K for the year ended February 28, 1997.

2. Inventories

Inventories consist of:

                            11/30/97       2/28/97
                            --------       -------
Raw materials               $ 93,215      $ 64,685
Work in process               26,035        57,070
Finished goods               160,771        75,683
                            --------      --------
Total inventories           $280,021      $197,438
                            ========      ========


3.     Proposed Acquisition

On November 24, 1997, the Company executed a definitive asset purchase agreement
(the "Asset  Purchase  Agreement") by and among the Company,  Ctron  Acquisition
Co.,  Inc., a  wholly-owned  subsidiary  of the Company,  and Digital  Equipment
Corporation  ("Digital")  pursuant to which the  Company  will  acquire  certain
assets of the network  products  business  unit (the "NPB") of Digital.  The NPB
develops and supplies a wide range of data networking hardware and software. The
purchase  price  for  the   acquisition  is  $435.5   million,   before  closing
adjustments,  consisting of approximately  $91.8 million in cash,  approximately
$293.5 million in product credits and approximately $50 million in shares of the
Company's  common stock.  The closing of the  acquisition  is subject to certain
conditions,  including the lack of any material adverse change in the NPB or the
Company.

The Company and Digital have also entered into a Reseller and Services Agreement
dated November 24, 1997 pursuant to which Digital  designated the Company as its
Strategic  Network  Products  Partner  and was  appointed  by the  Company  as a
reseller of certain of the Company's products (including the products previously
sold by the NPB),  the  Company  designated  Digital  as its  Strategic  Network
Services Partner, and the Company agreed to sell and Digital agreed to purchase,
for internal use and resale, certain minimum volumes of products during the term
of the Reseller  Agreement,  which  extends  through June 30, 2001.  The minimum
volumes  are  subject to downward  or upward  adjustment  in certain  instances.
<PAGE>

During the term of the  Reseller  Agreement,  the Company  will  operate the NPB
under the name  Digital  Network  Products  Group,  a  Cabletron  Systems,  Inc.
Company.




<PAGE>

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

Cabletron  Systems' worldwide net sales in the third quarter of fiscal 1998 (the
three month period ended  November 30, 1997) were $331.8  million,  an 8 percent
decrease from net sales of $361.6  million for the third quarter of fiscal 1997.
The  decrease was  primarily  the result of lower than  expected  sales in North
America,  changes in the order pattern for some U.S. Federal Government Business
and lower international  sales in the Latin American and Asian markets.  For the
nine months ended  November 30, 1997  worldwide  sales  slightly  increased by 4
percent to $1,065.8 million in fiscal 1998 from $1,026.0 million in fiscal 1997.

Gross  profit as a percentage  of net sales in the third  quarter of fiscal 1998
decreased  to 50.5%  from  59.2% for the third  quarter  of fiscal  1997.  Gross
margins for the first nine months of fiscal 1998 were 55.3%  compared with 59.1%
for the same period in fiscal 1997. The decrease  reflects the impact of pricing
on margins,  some impact from foreign exchange on margins and inventory  changes
for the period.  The Company  anticipates  that  industry  competitiveness  will
remain active in the future and as such could create future  pressures on margin
levels.

Research and  development  ("R&D")  expenses in the third quarter of fiscal 1998
increased  11.8% to $46.6  million  from $41.1  million in the third  quarter of
fiscal  1997.  In the first nine  months of fiscal 1998 R&D  expenses  increased
$15.2 million to $134.6 million  compared to $119.4 for the first nine months of
fiscal  1997.  The  increase   reflects  the  Company's   ongoing  research  and
development efforts, including the further development of the SMARTSwitch family
of products,  SPECTRUM management software as well as the increase in the hiring
of additional  software and hardware  engineers and  associated  cost related to
development of new products.  Research and development  spending as a percentage
of net sales  increased to 14.0% from 11.4% in the third quarter of fiscal 1997.
R&D expenses  increased as a  percentage  of net sales  primarily as a result of
lower than expected sales.

Selling,  general and  administrative  ("SG&A") expenses in the third quarter of
fiscal 1998  increased  29.4% to $95.5  million from $73.8  million in the third
quarter of fiscal 1997 and  increased  $52.4  million to $261.8  million for the
first nine months of fiscal 1998  compared to $209.4  million for the first nine
months of fiscal 1997.  The increase in SG&A expenses was due  predominately  to
the increase in sales and  technical  personnel,  and the opening of  additional
office locations.  SG&A expenses as a percentage of net sales increased to 28.8%
from 20.4% in the third quarter of fiscal 1997.  SG&A  increased as a percentage
of net sales primarily as a result of lower than expected sales.

Net interest  income in the third quarter of fiscal 1998  decreased  slightly to
$4.6  million,  as compared to $4.9  million in the same quarter of fiscal 1997.
For the  first  nine  months  in both  periods,  net  interest  income  remained
consistent at $14.3 million. Interest income in both periods reflects returns on
invested cash, marketable securities and long-term investments.
<PAGE>

Income before income taxes in the third quarter of fiscal 1998  decreased  71.1%
to $30.1 million from $104.0 million in the third quarter of fiscal 1997. Income
before income taxes for the first nine months of fiscal 1998 was $206.8  million
as compared with $249.1 million for the same period in fiscal 1997. The decrease
in income before income taxes, as a percentage of net sales for the quarter, was
due primarily to lower than expected sales and higher expenses.

Net income in the third  quarter of fiscal  1998 was $19.9  million  compared to
$67.7  million in the third quarter of fiscal 1997 and for the first nine months
was $136.3  million for fiscal  1998  compare  with $161.8  million for the same
period in fiscal 1997. The decrease was due to lower sales and higher expenses.

Liquidity and Capital Resources

Cash and cash  equivalents,  marketable  securities  and  long-term  investments
slightly increased to $570.2 million at November 30, 1997 from $568.3 million at
February 28, 1997.

Net accounts  receivable  increased  $78.8 million to $298.7 million at November
30,  1997  from  $219.9  million  at  February  28,  1997.  Average  days  sales
outstanding  were 81 days at November  30, 1997  compared to 52 days at February
28, 1997. The increase was a result of shipment of products shifting towards the
latter part of the quarter and lower than expected sales.

The Company has  historically  maintained  higher  levels of inventory  than its
competitors  in the  networking  industry  in order to  implement  its policy of
shipping  most  orders  requiring  immediate  delivery  within  24 to 48  hours.
Worldwide  inventories at November 30, 1997 were $280.0 million,  or 155 days of
inventory,  compared to $197.4  million,  or 111 days of inventory at the end of
the prior  fiscal year.  Inventory  turnover was 2.4 turns at November 30, 1997,
compared to 3.4 turns at February 28, 1997. The lower  inventory  turns were due
to lower sales in the quarter.

Capital expenditures for the first nine months of fiscal 1998 were $64.0 million
compared to $69.4  million for the same period of the  preceding  year.  Capital
expenditures included  approximately $34.5 million for equipment costs, of which
$22.2 million was for computer and computer related equipment, and $12.3 million
represented systems development costs.

Current  liabilities at November 30, 1997 were $243.6 million compared to $214.3
million at the end of the prior fiscal year. This increase was mainly due to the
growth in operations and the timing of disbursements.

In the opinion of management,  internally  generated  funds from  operations and
existing cash, cash  equivalents and short-term  investments will prove adequate
to support the Company's  working capital and capital  expenditure  requirements
for at least the next twelve months.
<PAGE>

Realignment

The Company  announced on December 16, 1997 a global  initiative to better align
the Company's  business  strategy with its focus in the  enterprise  and service
provider markets.  The realignment is intended to better position the Company to
provide  more   solutions-oriented   products  and  service;   to  increase  its
distribution of products  through  third-party  distributors  and resellers;  to
improve its position  internationally,  and to aggressively  develop partnership
and acquisition opportunities.  The Company expects to incur a pre-tax charge in
the fourth quarter of fiscal 1998 of between $25 and $30 million  related to the
realignment.  The realignment will include general expense reduction through the
elimination  of  duplicate  facilities,  consolidation  of  related  operations,
reallocation  of  resources,  including  the  elimination  of  certain  existing
projects,  and personnel reduction.  The Company plans to complete most of these
reductions over the next few months. The expense reductions  associated with the
realignment  are  intended  to yield  approximately  $50 to $60 million in total
annualized savings, beginning in the fourth quarter of fiscal 1998.

The  statements  concerning  the  Company's  realignment  plans and the intended
expense  reductions  constitute  forward looking  information and actual results
could  differ  materially.  Those  factors  which could cause the Company not to
achieve its intended expense reductions include, among others,  additional costs
associated with relocations and employee severance, the need to maintain certain
essential,  but underutilized,  facilities,  and delays in implementing  planned
reductions.  Difficulties in achieving the expense  reductions may result in the
Company's  failure to realize the full amount of the projected  annualized  cost
savings or may cause the Company to incur additional costs in future quarters as
it takes  additional  actions to achieve the projected  annualized cost savings.
The Company's  realignment  will require the  dedication of management and other
resources,  which may result in a temporary disruption of the Company's business
activities.  Any such  disruption  could have a material  adverse  effect on the
Company's  business,  operating results or financial  condition.  Over time, the
loss of the personnel,  facilities and other  resources  eliminated  through the
expense reductions may adversely impact Cabletron's ability to generate expected
revenue levels.

New Accounting Pronouncements

In June 1997,  the Financial  Accounting  Standards  Board issued  Statement 130
(SFAS 130),  "Reporting  Comprehensive  Income," which establishes standards for
reporting and display of  comprehensive  income and its components in a full set
of  general-purpose  financial  statements.  Under this  concept,  all revenues,
expenses,  gains and losses recognized during the period are included in income,
regardless  of whether they are  considered  to be results of  operations of the
period.  SFAS 130,  which  becomes  effective for the Company in its fiscal year
ending  February  28,  1999,  is not  expected to have a material  impact on the
consolidated financial statements of the Company.

In June 1997,  the Financial  Accounting  Standards  Board issued  Statement 131
(SFAS  131),   "Disclosures   about   Segments  of  an  Enterprise  and  Related
Information,"  which  establishes  standards  for the way that  public  business
enterprises  report  selected  information  about  operating  segments in annual
financial  statements  and  requires  that  those  enterprises  report  selected
<PAGE>

information   about  operating   segments  in  interim   financial   reports  to
shareholders.  It also  establishes  standards  for  related  disclosures  about
products and services,  geographic  areas and major  customers.  This Statement,
which becomes  effective for the Company in its fiscal year ending  February 28,
1999,  is  currently  not  expected to have a material  impact on the  Company's
consolidated  financial  statements and disclosures footnote.

ITEM 3.  QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The Company faces  exposure to adverse  movements in foreign  currency  exchange
rates.  These  exposures may change over time as business  practices  evolve and
could have a material  adverse impact on the Company's  financial  results.  The
Company uses derivative  financial  instruments,  principally  forward  exchange
contracts and options,  in its management of foreign  currency  exposure.  These
contracts  primarily  require the Company to  exchange or sell  certain  foreign
currencies  either with or for US dollars at  contractual  rates.  The Company's
foreign  currency  hedging  activities  are  used to  minimize  adverse  foreign
exchange  movements  on the  eventual  dollar net cash  inflows  of its  foreign
denominated net assets.  The success of the Company's  foreign  currency hedging
activities depends upon forecasts of transaction activity denominated in various
currencies.  To the extent that these forecasts are over- or understated  during
periods of currency  volatility,  the  Company  could  experience  unanticipated
currency  gains or  losses.  The  Company  does  not  hold or  issue  derivative
financial instruments for speculative or trading purposes.

Realized and  unrealized  foreign  exchange  gains and losses are  recognized in
operating  income and offset foreign exchange gains and losses on the underlying
exposures.  Premiums paid on forward  exchange  contracts are amortized over the
life of the  contract.  Premiums paid on options are expensed  immediately.  The
Company's derivative  financial  instruments are marked to market at the balance
sheet  date  and  the  carrying  amount  approximates  the  fair  value  of  the
instruments.  The Company  maintains  investment  portfolio  holdings of various
issuers,  types, and maturities.  These  securities are generally  classified as
available for sale, and consequently,  are recorded on the balance sheet at fair
value  with  unrealized  gains or losses  reported  as a separate  component  of
stockholders' equity. 


PART II. OTHER INFORMATION

Item 1.  Legal Proceedings

Since October 24, 1997, the following six shareholder class action lawsuits have
been filed against the Company and certain officers and directors of the Company
in the United States  District Court for the District of New Hampshire:  Charles
Mesko,  et al. V.  Cabletron  Systems,  Inc., et al.  (District of New Hampshire
10/24/07);  Karen Borick, et al. V. Cabletron Systems, Inc., et al. (District of
New Hampshire 11/24/97); Richard Durr, et al. V. Cabletron Systems, Inc., et al.
(District  of New  Hampshire  12/11/97);  Albert  Shapiro,  et al. V.  Cabletron
Systems, Inc., et al. (District of New Hampshire 12/9/97);  James Pettus, et al.
v. Cabletron  Systems,  Inc., et al. (District of New Hampshire  12/16/97);  and
Kenneth M. Williams, et al. v. Cabletron Systems,  Inc., et al. (District of New
Hampshire 12/18/97).  The Company expects that these lawsuits, which are similar
in material respects,  will be consolidated and will proceed as one class action
against the Company and certain  officers and directors.  The complaints  allege
that  the  Company  and  several  of its  officers  and  directors  disseminated
materially false and misleading  information about the Company's  operations and
acted in  violation  of Section  10(b) and Rule 10b-5 of the exchange Act during
the period between March 3, 1997 and December 2, 1997.  The  complaints  further
allege that certain  officers and directors  profited from the  dissemination of
such  misleading  information  by selling  shares of the Company's  common stock
during this period.  The  complaints do not specify the amount of damages sought
on behalf of the class.
<PAGE>

Item 6. Exhibits and Reports on Form 8-K.

[a] There were no reports on Form 8-K filed  during the quarter  ended  November
30, 1997.

[b] 

Exhibit 2.1 Asset Purchase  Agreement  dated as of November 24, 1997 (the "Asset
Purchase   Agreement")  by  and  among  Cabletron  Systems,   Inc.,  a  Delaware
corporation ("Cabletron"), Ctron Acquisition, Inc., a Delaware corporation and a
wholly-owned  subsidiary  of Cabletron,  and Digital  Equipment  Corporation,  a
Massachusetts corporation ("Digital").  The Exhibits and Disclosure Schedules to
the Asset Purchase Agreement are not included with the Asset Purchase Agreement.
A list briefly  identifying the contents of such omitted Exhibits and Disclosure
Schedules is included herein.  Cabletron agrees to furnish supplementally to the
Commission,  upon request,  a copy of such Exhibits and  Disclosure  Schedules.*
(page 15 of this report)

Exhibit  10.1  Reseller  and  Services  Agreement  dated as of November 24, 1997
between  Cabletron  and Digital  (the  "Reseller  Agreement").  The Exhibits and
Disclosure  Schedules  to the  Reseller  Agreement  are not  included  with  the
Reseller  Agreement.  A list  briefly  identifying  the contents of such omitted
Exhibits  and  Disclosure  is  included  herein.  Cabletron  agrees  to  furnish
supplementally  to the  Commission,  upon  request,  a copy of such Exhibits and
Disclosures Schedules.* (page 86 of this report)

Exhibit 11 - Statement re: Computation of Per Share Earnings (page 137 of
this report)











<PAGE>


Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.








                                          CABLETRON SYSTEMS, INC.
                                                   (Registrant)


January 14, 1998                          /s/ Donald B. Reed
      Date                                Donald B. Reed
                                          President  and
                                          Chief Executive Officer


January 14, 1998                          /s/ David J. Kirkpatrick
      Date                                David J. Kirkpatrick
                                          Director of Finance and Chief
                                          Financial Officer




























<PAGE>


EXHIBIT INDEX
Exhibit                                                                    Page
  No.     Exhibit                                                           No.

2.1        Asset Purchase Agreement dated as of November 24, 1997 (the
           "Asset Purchase Agreement") by and among Cabletron Systems,
           Inc., a Delaware corporation ("Cabletron"), Ctron Acquisition,
           Inc., a Delaware corporation and a wholly-owned subsidiary of
           Cabletron, and Digital Equipment Corporation, a
           Massachusetts corporation ("Digital").  The Exhibits and
           Disclosure Schedules to the Asset Purchase Agreement are not
           included with the Asset Purchase Agreement.  A list briefly
           identifying the contents of such omitted Exhibits and Disclosure
           Schedules is included herein.  Cabletron agrees to furnish
           supplementally to the Commission, upon request, a copy of such
           Exhibits and Disclosure Schedules.*                               16 

10.1       Reseller and Services Agreement dated as of November 24, 1997
           between Cabletron and Digital (the "Reseller Agreement"). The
           Exhibits and Disclosure Schedules to the Reseller Agreement are
           not included with the Reseller Agreement.  A list briefly
           identifying the contents of such omitted Exhibits and Disclosure
           is included herein.  Cabletron agrees to furnish supplementally to
           the Commission, upon request, a copy of such Exhibits and
           Disclosures Schedules.*                                           86

                     
11.1      Statement re: Computation of Per Share Earnings                   137


    
* Confidential  Treatment request as to certain portions. The term "Confidential
Treatment" and the mark "*" as used throughout the indicated  exhibit means that
material has been omitted and separately filed with the Commission.




EXHIBIT 2.1








                            ASSET PURCHASE AGREEMENT


                                      AMONG


                            CABLETRON SYSTEMS, INC.,
                             CTRON ACQUISITION, INC.


                                       AND


                          DIGITAL EQUIPMENT CORPORATION(1)


                                NOVEMBER 24, 1997














(1)  Confidential  Treatment has been  requested as to certain  portions of this
agreement. The term "Confidential Treatment" and the mark (*) is used throughout
this  agreement  in  order to  indicate  that  material  has  been  omitted  and
separatley filed with the Securities and Exchange Commission.



<PAGE>


                                    Exhibits

A      -   Initial Statement of Assets

B      -   Form of Reseller Agreement

C      -   Assignment and Assumption Agreement

D      -   Bill of Sale

E      -   Statements of Operations

F      -   List of NPB Employees

G      -   Assignment of Patents and Patent Applications

H      -   Assignment of Trademarks, Trademark Applications and Goodwill


                                    Schedules

Schedule 1.1 (a)           -  Accounting Convention

Schedule 1.1 (b)           -  Agreed-Upon Procedures

Schedule 1.2               -  Assigned Licenses

Schedule 1.3               -  Assigned Patents

Schedule 1.4               -  Assigned Trademarks

Schedule 1.5               -  Products

Schedule 1.6               -  Retained Patents

Schedule 1.7               -  Licensing Programs

Schedule 2.1(a)            -  Encumbrances on Acquired Assets

Schedule 2.1(h)            -  Contracts

Schedule 2.1(i)            -  Permits
<PAGE>

Schedule 2.1(x)            -  International Assets

Disclosure Schedule -- Exceptions to Representations and Warranties

Schedule 4.8               -  Exceptions to Representation 4.8

Schedule 5.10(a)           -  Disability Schedule



<PAGE>


                            ASSET PURCHASE AGREEMENT

         This Asset  Purchase  Agreement  (the  "Agreement")  is entered into on
November 24, 1997, by and among Cabletron Systems, Inc., a Delaware corporation,
Ctron Acquisition, Inc., a Delaware corporation and a wholly-owned subsidiary of
Cabletron and Digital Equipment Corporation,  a Massachusetts  corporation.  The
Buyer and the Seller are collectively referred to herein as the "Parties."

         Whereas, Seller desires to sell certain assets of its network products 
         business to Buyer;

         Whereas, Buyer desires to purchase certain assets of Seller's network 
         products business;

         Whereas,  as a condition to entering  into the  purchase and sale,  the
parties have agreed to enter into a Reseller Agreement, pursuant to which Seller
will be appointed as a reseller of Buyer's  products,  including the products of
the network products business, and Seller has agreed to purchase certain minimum
amounts of such products;

         Whereas,  the parties  wish to  describe  their  respective  rights and
obligations.

         Now,  therefore,  in  consideration  of the  premises  and  the  mutual
promises herein made, and in consideration of the  representations,  warranties,
and covenants herein contained, the Parties agree as follows.



1.       Definitions.

         "Accounting Convention" means the accounting convention attached
hereto as Schedule 1.1(a).

         "Acquisition" has the meaning set forth in the preamble above.

         "Acquired Assets" has the meaning set forth in ss. 2.1.

         "Acton  Facilities" mean the parcels of real property  designated as 50
and 100 Nagog Park, Acton,  Massachusetts,  and all  improvements,  fixtures and
fittings  thereon,  easements,   rights-of-way,  and  other  appurtenant  rights
thereto.

         "Agreed-Upon Procedures" means the agreed-upon procedures attached 
hereto as Schedule 1.1(b).

         "Affiliate"  has the meaning set forth in Rule 12b-2 of the regulations
promulgated under the Securities Exchange Act.
<PAGE>

         "Agreement" has the meaning set forth in the preamble above.

         "Asset  Value"  means  the net value of the  assets  on the  applicable
Statement of Assets established in accordance with the Accounting Convention.

         "Assigned  Copyrights"  mean the  copyright  interests,  registered  or
unregistered,  used  primarily in the NPB or the Products or the Products  Under
Development, or used solely in any other Acquired Assets.

         "Assigned  Intellectual  Property"  means the entire  right,  title and
interest  in and to (i) the  Assigned  Patents,  the  Assigned  Copyrights,  the
Assigned  Trademarks,  and all  applications  for any of the foregoing,  and the
Assigned  Licenses,  and (ii)  trade  secrets,  know-how  and other  proprietary
information  that is used  primarily  in the NPB or the Products or the Products
Under  Development,  excluding  in all cases the Retained  Patents,  the Digital
Marks, and the Retained Software.

         "Assigned  Licenses" mean the license  agreements set forth in Schedule
1.2  and  licenses  licensed  specifically  for a  Product  or a  Product  Under
Development and used primarily in the NPB.

         "Assigned  Patents" mean the Patents listed under the heading "Assigned
Patents" set forth in Schedule 1.3 and all foreign counterparts thereto, subject
to all encumbrances set forth in Schedule 2.1(a).

         "Assigned Trademarks" mean the Trademarks set forth in Schedule 1.4.

         "Assumed Liabilities" has the meaning set forth in ss. 2.3.

         "Basis"  means  any  past or  present  fact,  situation,  circumstance,
status,  condition,  activity,  practice,  plan,  occurrence,  event,  incident,
action,  failure to act, or transaction  that forms or could reasonably form the
basis for any specified consequence.

         "Buyer" means Cabletron Systems, Inc., Ctron Acquisition, Inc. and 
Cabletron Systems, Inc.'s Subsidiaries, as and to the extent that the context 
requires.

         "Buyer 401(k) Plan" means the Cabletron Systems, Inc. 401(k) Plan.

         "Cabletron" means Cabletron Systems, Inc.

         "Cabletron  Common Stock" means the common  stock,  $0.01 par value per
share, of Cabletron.
<PAGE>

         "Cabletron  Marks"  means  the  trademark  "Cabletron"  and  the  other
trademarks, logos and designs used by Buyer from time-to-time to signify Buyer's
products and services.

         "Cabletron Shares" has the meaning set forth in ss. 2.5(b).

         "Cabletron  Stock  Price"  means the  average,  rounded to the  nearest
one-thousandth of a dollar ($0.001),  of the midpoints of the high and low sales
prices of  Cabletron  Common  Stock as reported  on the New York Stock  Exchange
Composite  Tape (as reported by the eastern  edition of The Wall Street  Journal
or, if not  reported  thereby,  as reported by another  authoritative  source as
mutually agreed by the Buyer and the Seller) for the 10 consecutive trading days
during the period ending on and including the date hereof.

         "Cause" has the meaning set forth in ss.5.10.

         "Closing" has the meaning set forth in ss. 2.7.

         "Closing Date" has the meaning set forth in ss. 2.7.

         "Closing Date Statement of Assets" has the meaning set forth in ss.
2.6(a)(i).

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Commission" means the Securities and Exchange Commission.

         "Confidential Information" means any and all information concerning the
businesses  and  affairs  of  the  Buyer  (including,   following  the  Closing,
information  of the Seller  related  to the NPB) or Seller,  as the case may be,
other than that  information  which is  independently  developed  in the future,
already  generally or readily  obtainable by the public or is publicly  known or
becomes publicly known through no breach of ss. 7 by the Seller or Buyer, as the
case may be.

         "Contracts" has the meaning set forth in ss. 2.1(h).

         "Data Networking Product" means a data networking or  telecommunication
hardware product (and the software  incorporated  therein) specifically designed
for  transporting  data  between two or more  computing  devices,  such as hubs,
routers, switches,  bridges,  structured wiring, adapters, remote access devices
(e.g.,  access  concentrators)  and  terminal  servers,  and logical  extensions
thereof.

         "Demand  Plan" means  Seller's  twelve month  product  plan  previously
delivered  to  Buyer  based  on  the   consolidated   input  of  Seller's  sales
organizations  as of the ninth week of  Seller's  first  quarter of fiscal  year
1998.
<PAGE>

         "Digital Brand" has the meaning set forth in the Reseller Agreement.

         "Digital Marks" has the meaning set forth in the Reseller Agreement.

         "Disclosure Schedule" has the meaning set forth in ss. 3.

         "Employee Plan" has the meaning set forth in ss. 3.24(a).

         "Environment"  means soil, land surface or subsurface  strata,  surface
waters  (including  navigable waters,  ocean waters,  streams,  ponds,  drainage
basins and wetlands),  groundwater, water body sediments, drinking water supply,
stream sediments,  ambient air (including indoor air), plant and animal life and
any other environmental medium or natural resource.

         "Environmental  Laws" mean the  Comprehensive  Environmental  Response,
Compensation and Liability Act, the Resource  Conservation and Recovery Act, the
Clean Air Act, the Clean Water Act, and M.G.L.  Chapter 21E,  each as amended or
hereinafter  in effect  and any other  federal,  state,  local or  foreign  law,
regulation or legal requirement,  as now or hereinafter in effect,  relating to:
(a)  the  Release,  containment,  removal,  remediation,  response,  cleanup  or
abatement  of  any  sort  of  any  Hazardous  Materials;  (b)  the  manufacture,
generation, formulation,  processing, labeling, distribution,  introduction into
commerce,   use,   treatment,   handling,   storage,   recycling,   disposal  or
transportation of any Hazardous  Materials;  (c) exposure of persons,  including
employees, to any Hazardous Materials; (d) the pollution, protection or clean up
of the Environment; or (e) noise.

         "Environmental  Permit"  means  any  Permit or  authorization  from any
governmental  authority required under, issued pursuant to, or authorized by any
Environmental Law.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as 
amended.

         "Excluded Assets" has the meaning set forth in ss. 2.2.

         "First Year" has the meaning set forth in ss. 2.5 below.

         "First Year Product Credits" has the meaning set forth in ss. 2.5 
below.

         "FMLA" has the meaning set forth in ss. 5.10.

         "GAAP" means United States generally accepted accounting  principles as
in effect from time to time.

         "Hart-Scott-Rodino Act" means the Hart-Scott-Rodino Antitrust 
Improvements Act of 1976, as amended. 
<PAGE>

          "Hazardous Materials" means all substances defined as Hazardous 
Substances,  Hazardous  Materials,  Oils,  Pollutants  or  Contaminants  in  the
National Oil and Hazardous Substances Pollution  Contingency Plan, 40 C.F.R. ss.
200.5, or defined as such by, or regulated as such under, any Environmental Law.

         "Hired Employees" has the meaning set forth in ss. 5.10.

         "Indemnified Party" has the meaning set forth in ss. 9.5(a).

         "Initial Employment Period" has the meaning set forth in ss. 5.10.

         "Indemnifying Party" has the meaning set forth in ss. 9.5(a).

         "Initial  Statement of Assets" means the Statement of Assets as of June
28, 1997 attached hereto as Exhibit A.

         "Knowledge" of an  organization  means actual  knowledge of the Persons
within  such  organization  having  principal  responsibility  for the  relevant
matters after reasonable investigation.

         "Laws"  means  all  laws,  rules,   regulations,   codes,  injunctions,
judgments, orders, decrees, rulings, interpretations,  constitution,  ordinance,
common law, or treaty,  of any  federal,  state,  local  municipal  and foreign,
international,   or  multinational  government  or  administration  and  related
agencies.

         "Leave Expiration Date" has the meaning set forth in ss. 5.10.

         "Liability"  means  any  liability  or  obligation  (whether  known  or
unknown, whether asserted or unasserted, whether absolute or contingent, whether
accrued or unaccrued, whether liquidated or unliquidated,  whether incurred, and
whether due or to become due).

         "Licensing Programs" mean the licenses on Schedule 1.7.

         "Lien" means any mortgage,  pledge,  lien,  security  interest,  claim,
equitable interest,  encumbrance,  restriction on transfer,  conditional sale or
other title retention device or arrangement  (including,  without limitation,  a
capital  lease),  or  contractual  restriction  on  the  creation  of any of the
foregoing,  whether  relating to any  property or right or the income or profits
therefrom;  provided,  however,  that the term  "Lien"  shall  not  include  (i)
statutory  liens for Taxes to the  extent  that the  payment  thereof  is not in
arrears  or  otherwise   due,  (ii)   encumbrances   in  the  nature  of  zoning
restrictions,  easements,  rights or  restrictions of record on the uses of real
property if the same do not  materially  detract  from the value of the property
encumbered thereby or materially impair the use of such property in the business
<PAGE>

of the NPB as currently conducted,  (iii) deposits or pledges made in connection
with, or to secure payment of, worker's  compensation,  unemployment  insurance,
old age pension programs mandated under applicable laws or other social security
regulations,  (iv)  rights of MCI and Bell  Atlantic  with  respect to the Acton
Facilities, and (iv) mechanics',  carriers', workmen's,  repairmen's and similar
liens, that do not materially  interfere with the ability to conduct business or
use the property as presently used.

         "Load"  means,  with respect to the NPB,  its backlog,  quarter-to-date
revenues and orders booked and scheduled to ship in the relevant  quarter.  Load
is used by Seller in the Ordinary Course of Business as a leading  indicator for
revenue.

         "Local Transfer Impediment" has the meaning set forth in ss. 2.1.

         "Losses" has the meaning set forth in ss. 9.2.

         "Material  Adverse  Effect"  means a  material  adverse  effect  in the
business,  assets,  financial  condition and results of operations of the NPB or
the Acquired Assets,  as the case may be, taken as a whole;  provided,  however,
none of the following items in and of themselves individually shall constitute a
Material Adverse Effect:  (i) the differential  between the current Load and the
historical Load requirements necessary to achieve Seller's planned second fiscal
quarter  revenue,  all as reflected  in the Load report dated  November 18, 1997
previously  provided to Buyer,  (ii) that a sufficient  number of NPB  Employees
have failed to become Hired  Employees,  such that Buyer is entitled to a [*] to
the Purchase Price, or (iii) any decrease in assets  resulting in an Asset Value
determined with respect to the Closing Date Statement of Assets of less than $75
million.

         "Multiemployer Plan" has the meaning set forth in ss. 3.26(c).

         "NPB"  means the  business,  operations  and assets of the Seller  with
respect to the  design,  having  manufactured,  sale,  marketing,  distribution,
maintenance  and support  (but not  service) of the  Products  and the design of
Products Under Development.

         "NPB Employees" has the meaning set forth in ss. 5.10.

         "Offerees" has the meaning set forth in ss. 5.10.

         "Ordinary  Course of Business"  means the  ordinary  course of business
consistent with past custom and practice (including with respect to quantity and
frequency).

         "Overseas  Employees" means NPB Employees whose principal work location
is outside of the United States.

 * Confidential Treatment
<PAGE>

         "Patent"  means:  (i) any  United  States  or  foreign  patent,  patent
application,  patent  disclosure  or other  patent  right;  (ii)  any  division,
continuation,  continuation-in-part  or similar extension of an application that
is a Patent;  and (iii) any patent or other patent right that issues or is based
upon an application that is a Patent.

         "Party" and "Parties" have the meanings set forth in the preamble
above.

         "Person" means an individual, a partnership,  a corporation,  a limited
liability  company,  an  association,  a joint stock  company,  a trust, a joint
venture,  an  unincorporated  organization,  or a  governmental  entity  (or any
department, agency, or political subdivision thereof).

         "Plan Eligibility Date" has the meaning provided in Section 5.10(b).

         "Product  Credits"  means  credits  to be used by Seller on a first in,
first out basis and net of credits against the full value of the invoice for the
purchase of products  on the Product  Road Map from Buyer in a specified  dollar
amount during a specified period of time pursuant to the Reseller Agreement.

         "Product Road Map" has the meaning set forth in the Reseller Agreement.

         "Products" mean the products listed in Schedule 1.5 "Products."

         "Products Under  Development" mean products developed or products under
development  (but not  including the  Products) by Seller  employees  (including
contract  employees)  during the period  when such  employees  were  employed by
Seller's Network Products  Business Unit and were engaged in the business of the
design, having manufactured,  sale,  marketing,  distribution,  maintenance,  or
support of Data Networking Products.

         "Purchase Price" has the meaning set forth in ss. 2.5.

         "Purchase Price Adjustment" shall mean the aggregate adjustments to the
Purchase Price which occur pursuant to ss. 2.6.

         "Registration Statement" has the meaning set forth in ss. 4.6.

         "Related  Entity" means any  corporation,  trust,  partnership or other
entity that would be considered  as a single  employer with Seller under Section
4001(b)(1) of ERISA or Section 414(b), (c), (m) or (o) of the Code.

         "Release"  means  any  actual  spilling,   leaking,  pumping,  pouring,
emitting,  dispersing,  emptying,  discharging,  injecting,  escaping, leaching,
dumping, or disposing of any Hazardous Materials into the Environment.
<PAGE>

         "Remaining Accrued Vacation Dollars" has the meaning set forth in 
ss. 2.6.

         "Remediation  Standard"  means a numerical  standard  that  defines the
concentrations  of  Hazardous  Materials  that may be permitted to remain in the
Environment after an  investigation,  remediation or containment of a release of
Hazardous Materials.

         "Reports" has the meaning set forth in ss. 3.28.

         "Reseller  Agreement" means the Reseller  Agreement entered into by the
Parties in the form of Exhibit B attached hereto.

         "Restoration Pension Plan" means the Digital Equipment Corporation Cash
Account Pension Restoration Plan.

         "Retained NPB Employees" has the meaning set forth in ss. 5.10.

         "Retained Patents" means the Patents listed under the heading "Retained
Patents" in Schedule 1.6.

         "Retained  Software"  means all right,  title and  interest  in (i) any
software,  including  fragments  or  modules  thereof,  that is  used by  Seller
primarily  outside  the  NPB,  and  (ii)  general  purpose  standalone  software
components  (e.g.,  not data networking) that are used by Seller both within and
outside the NPB (e.g., compilers, run-time systems and libraries).

         "SAVE Plan" means the Digital Equipment Corporation Savings and 
Investment Plan.

         "Second Year" has the meaning set forth in ss. 2.5.

         "Second Year Product Credits" has the meaning set forth in ss. 2.5.

         "Securities Act" means the Securities Act of 1933, as amended.

         "Securities Exchange Act" means the Securities Exchange Act of 1934, as
amended.

         "Seller" means Digital Equipment Corporation and its Subsidiaries, as 
and to the extent the context requires.

         "Seller Pension Plan" means the Digital Equipment Corporation Cash 
Account Pension Plan.

         "Statement  of Assets"  means a statement  of assets  sold  prepared in
accordance with the Accounting Convention.
<PAGE>

         "Subsidiary"  means with respect to any Person,  (i) any corporation at
least a  majority  of whose  outstanding  voting  stock is  owned,  directly  or
indirectly,  by such  Person or by one or more of its  Subsidiaries,  or by such
Person and one or more of its Subsidiaries;  (ii) any general partnership, joint
venture or similar entity, at least a majority of whose outstanding  partnership
or similar  interests  shall at the time be owned by such  Person,  or by one or
more of its Subsidiaries, or by such Person and one or more of its Subsidiaries;
and  (iii)  any  limited  partnership  of  which  such  Person  or  any  of  its
Subsidiaries is a general partner. For the purposes of this definition,  "voting
stock" means  shares,  interests,  participations  or other  equivalents  in the
equity interest (however designated) in such Person having ordinary voting power
for the  election of a majority of the  directors  (or the  equivalent)  of such
Person other than shares, interests,  participations or other equivalents having
such power only by reason of the occurrence of a contingency.

         "Tax" or "Taxes" means any federal,  state,  local,  or foreign income,
gross  receipts,  license,  payroll,   employment,   excise,  severance,  stamp,
occupation, premium, windfall profits, environmental (including taxes under Code
ss. 59A), customs duties, capital stock, franchise, profits, withholding, social
security (or similar, including FICA), unemployment,  disability, real property,
personal property, sales, use, transfer,  registration, value added, alternative
or add-on minimum, estimated, or other tax of any kind whatsoever, including any
interest, penalty, or addition thereto, whether disputed or not.

         "Tax Return" means any return,  declaration,  report, claim for refund,
or information return or statement relating to Taxes,  including any schedule or
attachment thereto and including any amendment thereof.

         "Third Party Claim" has the meaning set forth in ss. 9.5(a).

         "Trademarks"  means any  trademarks,  service marks,  trade dress,  and
logos,   together  with  all   translations,   adaptations,   derivations,   and
combinations thereof and including all goodwill associated therewith.

         "Welfare Plan" has the meaning set forth in ss. 3.26(a) below.



2.       Acquisition of Assets by Buyer



          2.1. Purchase and Sale of Assets. The Seller agrees to sell and 
transfer to the Buyer,  and the Buyer agrees to purchase from the  Seller at the
Closing,  subject  to and upon the terms and conditions  contained herein,  free
and clear of any material Lien, except those encumbrances listed on 
Schedule 2.1(a), all right, title, and interest in and to the following 
properties and assets (the "Acquired Assets"):
<PAGE>


                  (a) all assets  reflected on the Initial Statement of Assets
         other than those  disposed of since June 28, 1997 and those acquired in
         the Ordinary Course of Business since June 28, 1997 which appear on the
         Closing Date Statement of Assets.


                  (b) all the inventory of the NPB, including  raw  materials,
         work-in-process,  and finished  goods, as reflected on the Closing Date
         Statement of Assets;


                  (c) all tangible personal property used primarily in the 
         NPB (including, without limitation,  all  machinery,   equipment,  test
         equipment, supplies,  manufactured and purchased parts, tools, jigs and
         dies,  computer software stored on a tangible medium,  workstations and
         personal computers, electronic, electrical and mechanical equipment and
         other  computer  hardware  used  primarily  in the NPB) owned by Seller
         whether in the  Seller's  possession  or in the  possession  of another
         party  such  as a  manufacturer  or  vendor  of the  Seller,  including
         fully-depreciated or fully-expensed tangible property used primarily in
         the NPB; not including,  however, furniture, file cabinets, and similar
         office equipment and office supplies located in the Littleton  facility
         that  are  not  transferred  to  the  Acton  Facilities  but  including
         furniture,  file  cabinets,  and similar  office  equipment  and office
         supplies  located in Acton intended to compensate for the  non-transfer
         of Littleton equipment;


                  (d) the securities of Ipsilon Networks, Inc. owned by the 
         Seller;


                  (e) prepaid expenses and deposits;


                  (f) the  Acton  Facilities  and the  furniture  and  equipment
         located therein or comparable substitutes;


                  (g) the  Assigned  Intellectual  Property,  remedies  against
         infringement thereof and rights to protection of interests therein;


                  (h) all rights under any  contracts, indentures, mortgages,
         instruments,  Liens, guaranties, or other agreements of Seller, in each
         case to the extent they relate to the NPB or the Acquired  Assets,  and
         including,  without limitation,  those agreements set forth in Schedule
         2.1(h) (the "Contracts"), provided, however, that no rights are granted
         pursuant to this clause (h) with respect to intellectual property;


                  (i) all rights  under all  permits,  authorizations,  orders,
         registrations,   certificates,   variances,   approvals,  consents  and
         franchises or any pending applications all to the extent related to the
         NPB  or  the  Acquired  Assets,   including   without   limitation  all
         governmental permits, licenses, authorizations,  approvals and consents
         described in Schedule 2.1(i) ("Permits");

<PAGE>

                  (j) all technical data, designs, drawings, specifications,
         documentation and manuals (or portions thereof) to the extent that they
         are related to the NPB;


                  (k) the Licensing Programs, remedies against  infringement
         thereof and rights to protection of interests therein;


                  (l) all customer, distributor, supplier and mailing lists,
         pricing and cost  information,  and  business  and  marketing  plans of
         Seller (or portions thereof), all to the extent related to the NPB;


                  (m) all manufacturing MAC addresses used exclusively in 
         the operation of the NPB;


                  (n) all business records and financial management reports,
         books,  files,  plans,  appraisals,  environmental  audits and reports,
         documents, correspondence, lists, plats, architectural plans, drawings,
         notebooks,   specifications,   creative   materials,   advertising  and
         promotional materials, marketing materials, studies, reports, equipment
         repair,   maintenance   or   service   records   whether   written   or
         electronically stored or otherwise recorded, in each case, that is used
         exclusively in the NPB;


                  (o) all rights and interests of Seller as plan sponsor in 
         and with respect to the assets associated  with the  accounts  of Hired
         Employees  under the SAVE Plan  transferred to the Buyer 401(k) Plan as
         contemplated in ss. 5.10;


                  (p) the goodwill associated  with the NPB and the  Acquired
Assets.

On the Closing Date,  Seller shall transfer to Buyer all of the Acquired  Assets
located  outside  of the United  States,  including  those  listed by country on
Schedule 2.1(x). If it is not possible to do so without adversely  affecting the
ability of Seller to transfer,  and Buyer to hire,  the NPB  Employees  employed
outside of the United  States,  or if the Parties  mutually agree that it is not
desirable to transfer to Buyer  Acquired  Assets located in a country other than
the United States on the Closing Date because of any law or regulation, the need
for the  approval  of any  governmental  entity,  or the need for the  review or
approval  by  any  union,   works  council  or  similar  body  ("Local  Transfer
Impediment"),  Seller and Buyer shall take all actions  reasonably  necessary to
eliminate  the Local  Transfer  Impediment  and Seller  shall  take all  actions
reasonably  necessary to transfer  the Acquired  Assets and Buyer shall take all
actions reasonably necessary to hire the affected non-U.S. NPB Employees as soon
as  possible.  To this end,  the parties  agree to prepare and  execute,  to the
extent necessary, one or more international implementation agreements as soon as
possible after the date hereof to facilitate the transfer of non-U.S. assets and
employees.
<PAGE>

     2.2. Excluded Assets. There  shall  be  excluded  from the  Acquired Assets
to be sold,  assigned, transferred,  conveyed and  delivered to Buyer hereunder,
and to the extent in existence on the Closing  Date,  there shall be retained by
the Seller,  assets, properties  and  rights  including,  but  not  limited  to,
(collectively,  the "Excluded Assets"):


                  (a)  the Digital Marks;


                  (b)   the Retained Patents;


                  (c)  the Retained Software;


                  (d)  cash,   cash   equivalents, accounts receivables  and
short-term investments; and


                  (e) any of the rights of the Seller under this Agreement 
         (or under any other agreement between the Seller on the one hand and 
         the Buyer on the other hand.



     2.3. Assumption of Liabilities. On the terms and subject to the  conditions
set forth herein,  from and after
the  Closing,  the Buyer will  assume and  satisfy or perform  when due only the
following Liabilities (the "Assumed Liabilities"):


                  (a) all liabilities under the Contracts or Permits  arising
         after the Closing Date (including commitments by the Seller to purchase
         goods in the Ordinary  Course of Business  which are  unfulfilled as of
         the  Closing  Date),  except to the extent  arising  from any breach or
         default occurring prior to the Closing Date;


                  (b) all liabilities under the Licensing Programs and under 
         the licenses granted pursuant to ss. 8.2 arising after the Closing 
         Date, except to the extent arising from any breach or default occurring
         prior to the Closing Date;


                  (c) all  other  liabilities and obligations  set  forth  in
         Schedule  2.3(c)  under  an  express  statement  (that  the  Buyer  has
         initialed)  to the effect that the  definition  of Assumed  Liabilities
         will include the Liabilities and obligations so disclosed;


                  (d) all  liabilities related to the Acquired  Assets to the
         extent arising from or related to any facts or circumstances  occurring
         after the Closing Date, including,  without limitation,  all Taxes with
         respect to real  property  allocable  to any period  after the  Closing
         Date; and


                  (e) all  liabilities  related to the Hired  Employees  
         arising from or  related  to any  facts or  circumstances  occurring  
         after the Closing Date, except as otherwise expressly provided herein.

<PAGE>


     2.4. Liabilities Not Assumed.  Except  as  expressly  set  forth  in this  
Agreement  or any  other  written agreements between the Parties executed  
contemporaneously  herewith,  the Buyer will not assume or perform any 
Liabilities not specifically  contemplated by ss. 2.3 hereof.


     2.5. Purchase Price. The Buyer agrees to assume the Assumed  Liabilities
at the Closing and pay to the Seller aggregate  consideration  consisting of the
following (the "Purchase Price"), subject to adjustment pursuant to ss. 2.6:


                  (a) Cash.  At the Closing,  $91,800,000 in cash  (subject to
         adjustment  pursuant to ss.2.6)  payable by wire transfer to the Seller
         in  accordance  with  written  instructions  of the Seller given to the
         Buyer at least two business days prior to the Closing.


                  (b) Cabletron Stock. At the Closing, Buyer shall deliver to
         the Seller  certificates  representing  the  number of whole  shares of
         Cabletron  Common Stock equal to  $50,000,000  divided by the Cabletron
         Stock Price (the "Cabletron Shares").


                  (c) Product Credits.  The following Product Credits:

                           (i) First Year Product Credits.  Subject to 
                  adjustment pursuant to ss. 2.6, $168,500,000 in First Year 
                  Product Credits.

                                    "First Year Product  Credits"  means Product
                           Credits  which may be used by Seller to purchase from
                           Buyer, at prices set forth in the Reseller Agreement,
                           products   that  are  ordered   under  the   Reseller
                           Agreement  during the period beginning on the Closing
                           Date  and  ending  on the  first  anniversary  of the
                           Closing Date (the "First Year")  requesting  delivery
                           at any time  until  thirty  days after the end of the
                           First  Year.  Any  First  Year  Product  Credits  not
                           expended in accordance  with the  preceding  sentence
                           shall automatically expire and be of no further force
                           or effect immediately  following the end of the First
                           Year; provided, however, Seller shall be permitted to
                           carryover  to  the  Second  Year  unused  First  Year
                           Product  Credits  equal to the amount,  if any,  that
                           Seller's minimum purchase commitment (as described in
                           the Reseller  Agreement) is reduced in the First Year
                           as contemplated by the Reseller Agreement.

                           (ii) Second Year Product Credits.  Subject to 
                  adjustment pursuant to ss. 2.6, $125,000,000 in Second Year 
                  Product Credits.
<PAGE>

                                    "Second Year Product  Credits" means Product
                           Credits  which may be used by Seller to purchase from
                           Buyer, at prices set forth in the Reseller Agreement,
                           products   that  are  ordered   under  the   Reseller
                           Agreement  during the period  beginning  on the first
                           anniversary  of the  Closing  Date and  ending on the
                           second  anniversary  of the Closing Date (the "Second
                           Year")  requesting  delivery at any time until thirty
                           days  after the end of the  Second  Year.  Any Second
                           Year Product  Credits not expended in accordance with
                           the preceding sentence shall automatically expire and
                           be  of  no  further   force  or  effect   immediately
                           following  the  end of  the  Second  Year;  provided,
                           however,  Seller  shall  be  permitted  to use in the
                           twelve month period immediately  following the Second
                           Year unused Second Year Product  Credits equal to the
                           amount,   if  any,  that  Seller's  minimum  purchase
                           commitment  (as described in the Reseller  Agreement)
                           is  reduced  in  the  Second  Year  as   contemplated
                           pursuant to the Reseller Agreement.



     2.6. Ajustments to Purchase Price. The  acceptance  by the Buyer and Seller
of any  adjustments  to the Purchase Price pursuant to this ss. 2.6 shall be the
exclusive  remedy of either Party in connection  with an increase or decrease in
the Asset  Value of the assets  set forth on the  Initial  Statement  of Assets,
notwithstanding any provisions of ss.9.


                  (a)  Post-Closing Adjustment to Purchase Price

                           (i) Preparation of Closing Date Statement of 
                  Assets

                                    (A)  Within 60 days after the Closing
                           Date,  the  Seller  will  cause  Coopers & Lybrand to
                           perform the Agreed-Upon  Procedures and assist in the
                           preparation  of a Statement  of Assets (the  "Closing
                           Date  Statement  of  Assets")  for  the NPB as of the
                           Closing.  The Closing Date  Statement of Assets shall
                           be prepared based upon the Accounting Convention. The
                           Closing Date Statement of Assets will not reflect any
                           Liabilities.  In addition, the Seller will permit the
                           Buyer  (or its  accountants)  to  participate  in the
                           substantially  complete  physical  count of inventory
                           and other  tangible  personal  property and property,
                           plant and  equipment.  Buyer and  Seller  will  share
                           equally the fees and expenses of Coopers & Lybrand to
                           assist  in  the   preparation  of  the  Closing  Date
                           Statement  of  Assets  and  the  performance  of  the
                           Agreed-Upon Procedures.

                                    (B)  If the Buyer has any  objections
                           to the  Closing  Date  Statement  of Assets,  it will
                           deliver  a  written   statement  setting  forth  such
                           objections   to  the  Seller  within  45  days  after
<PAGE>

                           receiving the Closing Date  Statement of Assets.  The
                           Buyer and the Seller will use  reasonable  efforts to
                           resolve  any  such  objections  themselves.   If  the
                           Parties  do not obtain a final  resolution  within 30
                           days after the Seller has received  the  statement of
                           objections,   however,   the  Parties  shall  appoint
                           Deloitte & Touche,  certified public accountants,  to
                           resolve  any  remaining  objections.  If  Deloitte  &
                           Touche is  unavailable,  the  Parties  will  select a
                           nationally-recognized  accounting  firm by lot (after
                           excluding their respective regular outside accounting
                           firms).  The  determination of any accounting firm so
                           selected  will be set  forth in  writing  and will be
                           conclusive  and binding upon the Parties.  The Seller
                           will revise the Closing  Date  Statement of Assets as
                           appropriate   to  reflect  the   resolution   of  any
                           objections thereto pursuant to this ss. 2.6(a)(i)(B).
                           The Closing Date  Statement of Assets shall be deemed
                           final if Buyer  fails to object  within 45 days after
                           receipt or after any revisions are completed pursuant
                           to this ss. 2.6(a)(i)(B).

                                    (C)  In the event the Parties  submit
                           any unresolved  objections to an accounting  firm for
                           resolution as provided in ss. 2.6(a)(i)(B) above, the
                           Buyer and the Seller will share  equally the fees and
                           expenses of the accounting firm.

                                    (D)  As part of Buyer's review of the
                           Closing  Date  Statement  of  Assets  or  during  the
                           resolution   of  any   dispute,   including   by  the
                           nationally-recognized  accounting  firm  appointed to
                           resolve  disputes  of  the  Parties  pursuant  to ss.
                           2.6(a)(i)(B),  Buyer  and its  accountants  and other
                           representatives   will  be  entitled  to  review  the
                           methodology  and back-up  materials used in preparing
                           the Closing Date  Statement of Assets in the presence
                           of   appropriate   financial   staff  of   Seller  at
                           reasonable times and upon reasonable notice.

                           (ii)  Adjustment to Purchase Price.  The Purchase 
                  Price will be adjusted (in First Year Product Credits) as 
                  follows:

                                    (A)  If the Asset Value as determined
                           in the Closing Date  Statement of Assets,  net of any
                           resolved   disputes,   exceeds  the  Asset  Value  as
                           determined  in the  Initial  Statement  of  Assets by
                           $1,000,000  or more,  the First Year Product  Credits
                           will be  increased  by the  amount by which the Asset
                           Value  exceeds  the Asset  Value as  determined  with
                           respect to the Initial Statement of Assets.

                                    (B)  If the Asset Value as determined
                           in the Closing Date  Statement of Assets,  net of any
                           resolved  disputes,  is less than the Asset  Value as
<PAGE>

                           determined  with respect to the Initial  Statement of
                           Assets by $1,000,000 or more,  the First Year Product
                           Credits  will be decreased by the amount by which the
                           Asset   Value  is  less  than  the  Asset   Value  as
                           determined  with respect to the Initial  Statement of
                           Assets.


                  (b)   Vacation Adjustment.  The Purchase Price shall be 
                        adjusted for accrued vacation benefits as follows:

                           (i)  "Remaining  Accrued Vacation Dollars" shall
                  mean the sum for all Hired  Employees,  of an amount  for each
                  Hired  Employee  equal  to (i) the  total  number  of  accrued
                  vacation  hours  not paid  out to such  employee  pursuant  to
                  ss.5.10(b)(v),  multiplied  by (ii) the  hourly  wage rate for
                  such employee.

                  Within 25 business days  following  the Closing  Date,  Seller
                  shall prepare and deliver to the Buyer a statement showing the
                  Remaining Accrued Vacation Dollars prepared in accordance with
                  Seller's standard accounting policies prepared on a consistent
                  basis with prior vacation accrual calculations. Within 20 days
                  following  the delivery of such  statement by Seller to Buyer,
                  Buyer may object to the  calculation of the Remaining  Accrued
                  Vacation  Dollars  in  writing.  If  Buyer so  objects  to the
                  Remaining Accrued Vacation Dollars,  the Parties shall attempt
                  to resolve  such  dispute by  negotiation.  If the parties are
                  unable to  resolve  such  dispute  within  twenty  days of any
                  objection  by Buyer,  the  parties  shall  appoint  Deloitte &
                  Touche, certified public accountants, to resolve any remaining
                  objections.  If Deloitte & Touche is unavailable,  the Parties
                  will  select a  nationally-recognized  accounting  firm by lot
                  (after excluding their respective  regular outside  accounting
                  firms).  The  determination of any accounting firm so selected
                  will be set  forth  in  writing  and  will be  conclusive  and
                  binding upon the Parties.

                  If Buyer  does not  object  to the  calculation  of  Remaining
                  Accrued  Vacation  Dollars  within  the time  period set forth
                  above or upon the final  resolution of any dispute  concerning
                  the Remaining Accrued Vacation Dollars (i) Seller shall pay to
                  Buyer  the  amount,  if any,  by which the  Remaining  Accrued
                  Vacation Dollars exceeds  $1,500,000,  or (ii) Buyer shall pay
                  to Seller the amount, if any, by which $1,500,000  exceeds the
                  Remaining  Accrued Vacation  Dollars,  in each case as soon as
                  possible, but in any event within 10 business days.



     2.7. The Closing.  The  closing  of  the  transactions   contemplated  by  
this  Agreement (the  "Closing"),  such Closing to be deemed to have occurred at
12:01 a.m. on the Closing Date,  shall take place at the offices of Ropes & Gray
in Boston, Massachusetts,  commencing at 10:00 a.m. eastern time on the business
day after all  conditions in Sections 6.1 and 6.2 are satisfied  (provided  that
<PAGE>

such date is  reasonably  acceptable  to both Parties) or such other date as the
Parties may mutually determine (the "Closing Date").


     2.8. Deliveries at the Closing. At the  Closing,  the Seller will deliver
to the Buyer properly executed and acknowledged,  if appropriate (i) the various
certificates,  instruments,  and documents  referred to in ss. 6.1 below; (ii) a
quitclaim  deed  relating  to the Acton  Facilities,  (iii)  assignments  of the
Assigned Patents,  Assigned Trademarks,  Contracts and Permits,  (iv) such other
instruments of sale, transfer,  conveyance,  and assignment as the Buyer and its
counsel  may  reasonably  request  in respect of the  Acquired  Assets,  (v) the
Reseller  Agreement,  and (vii) the Bill of Sale in the form attached  hereto as
Exhibit D. The Buyer will execute, acknowledge (if appropriate), and deliver the
Assignment and Assumption Agreement in the form attached hereto as Exhibit E and
will deliver the consideration specified in ss. 2.5(a) and 2.5(b) above.

         Simultaneously  with such  delivery,  the Buyer and Seller will use all
reasonable  efforts and take all  reasonable  action as may be  necessary to put
Buyer in possession and operating control of the Acquired Assets.

         At any time and from time to time after the Closing,  at the request of
Buyer and without further consideration, except as stated below, the Seller will
execute  and  deliver  such other  instruments  of sale,  transfer,  conveyance,
assignment  and  confirmation  and take  such  action  as Buyer  may  reasonably
determine is necessary to transfer,  convey and assign to Buyer,  and to confirm
Buyer's  title to or interest  in the  Acquired  Assets,  to put Buyer in actual
possession and operating  control  thereof and to assist Buyer in exercising all
rights with respect thereto.



     2.9. Preliminary Allocation of Purchase Price  The Parties agree that the  
preliminary allocation of the Purchase Price for the Acquired Assets shall be as
determined  by the  allocation  formula to be agreed by the  parties;  as may be
adjusted to reflect any Purchase Price  Adjustments.  The Seller and Buyer agree
that the allocation may be amended or modified by mutual  agreement to establish
a final  allocation  prior to the filing of the  applicable Tax Returns of Buyer
and  Seller.  The Seller and Buyer  shall use such final  allocation  in all Tax
Returns.



3. Representations and Waranties of the Sellers. The Seller  represents  and  
warrants to the Buyer that the  statements  contained  in this ss. 3 are correct
and complete as of the date of this Agreement and, unless a date is specified in
such representation and warranty, will be correct and complete as of the Closing
Date as  though  made  then,  except  as set  forth in the  disclosure  schedule
accompanying this Agreement (the "Disclosure Schedule"). The Disclosure Schedule
will be  arranged in  paragraphs  corresponding  to the  lettered  and  numbered
paragraphs  contained in this ss. 3.  Disclosure  in one paragraph is not deemed
disclosure for any other paragraph.

<PAGE>

     3.1. The Seller is a corporation  duly  organized,  validly  existing,  
and in good standing under the laws of the state of its incorporation.


     3.2. [Intentionally Omitted]



     3.3. Authorization of Transaction. The Seller has the  corporate  power and
authority to execute and deliver this  Agreement and to perform its  obligations
hereunder. All corporate actions or proceedings to be taken by or on the part of
the Seller to authorize  and permit the execution and delivery by Seller of this
Agreement  and the  instruments  required to be executed and delivered by Seller
pursuant hereto, the performance by Seller of its obligations hereunder, and the
consummation by Seller of the transactions  contemplated  herein, have been duly
and properly  taken.  This Agreement has been duly executed and delivered by the
Seller and  constitutes the legal,  valid and binding  obligation of the Seller,
enforceable in accordance with its terms and conditions.



     3.4. Noncontravention.   Except as set forth in ss. 3.4 of the  Disclosure 
Schedule,  neither the  execution  and the delivery of this  Agreement,  nor the
consummation of the transactions  contemplated hereby (including the assignments
and assumptions  referred to in ss. 2 above), will (i) violate any constitution,
statute,  regulation,  rule,  injunction,  judgment,  order  or  decree  of  any
government,  governmental agency, or court to which the Seller is subject or any
provision of the charter or by-laws of the Seller or (ii) conflict with,  result
in a breach of,  constitute  a default  under,  result in the  acceleration  of,
create in any party the right to accelerate,  terminate,  modify,  or cancel, or
require any notice under any agreement, contract, lease, license, instrument, or
other  arrangement  to which the Seller is a party or by which it is bound or to
which any of its assets is subject (or result in the imposition of any Lien upon
any of its  assets),  except  in the  case  of (i)  and  (ii),  for  violations,
conflicts,  breaches or defaults that would not have a Material  Adverse Effect.
Except as set forth in ss. 3.4 of the Disclosure  Schedule,  the Seller does not
need to give any notice to, make any filing with,  or obtain any  authorization,
consent,  or approval of any government or governmental  agency in order for the
Parties to consummate the transactions contemplated by this Agreement (including
the  assignments  and  assumptions  referred  to in ss. 2 above)  except for the
required filings under the Hart-Scott-Rodino and foreign pre-merger notification
requirements.



     3.5. Brokers' Fees.  The Seller has no liability or  obligation to pay any 
fees or  commissions  to any  broker,  finder,  or  agent  with  respect  to the
transactions  contemplated  by this  Agreement  for which the Buyer could become
liable or obligated.



     3.6. Title of Assets. Except for Real Property and Intellectual Property
which are  subject to ss.ss.  3.15 and 3.16 and except as set forth in ss.3.6 of
the Disclosure  Schedule,  the Seller owns or has a valid leasehold  interest in
the Acquired  Assets,  free and clear of all Liens,  except for Liens that would
not have a Material Adverse Effect.
<PAGE>

     3.7. All Assets Necessary to Conduct Business. The Acquired  Assets and the
licenses  granted in Section  8.2  comprise  all of the assets,  properties  and
rights of every type and description,  real,  personal,  tangible and intangible
necessary to the conduct of the NPB.



     3.8. Financial Statements. The Initial Statement of Assets, attached hereto
as Exhibit D, was prepared in accordance with the Accounting Convention. Exhibit
E are unaudited  summary  statements  of  operations  for the NPB for the fiscal
years ended July 1, 1995,  June 29, 1996 and June 28,  1997  (together  with the
Initial Statement of Assets, the "Financial Information"). The Initial Statement
of Assets was  prepared  in good  faith and in  accordance  with the  Accounting
Convention. The summary statements of operations were prepared in good faith and
derived from Seller's  management  reporting  systems as maintained by Seller in
the ordinary course of business.  No  representation  is made that the Financial
Information  has been  prepared  in a manner  consistent  with  GAAP or that the
Financial  Information is indicative of the financial  condition and the results
of  operations  that would have been  achieved  had the NPB been  operated  as a
stand-alone, non-affiliated entity.



     3.9. Absence of Changes. Since the date of the Initial  Statement of Assets
and except as disclosed in ss. 3.9 of the  Disclosure  Schedule,  the Seller has
operated and  conducted  the business of the NPB only in the Ordinary  Course of
Business and, with respect to, by and on behalf of the NPB, there has not been:


                  (a)  any sale, lease, transfer, or assignment of assets,
         tangible or  intangible,  other than sales of inventory in the Ordinary
         Course  of  Business  and  other  than in an  amount  not in  excess of
         $250,000;


                  (b)  any acceleration, termination, modification, or 
         cancellation of any Contract listed in Schedule 2.1(h) involving 
         payments of more than $250,000;


                  (c)  as of the date hereof the  responsible  managers of
         the NPB have not  received  any  notice  that any  major  resellers  or
         distributors   do  not  intend  to  continue   with  Buyer  a  business
         relationship  on terms at least as favorable as the  relationship  such
         resellers or distributors,  as the case may be, currently have with the
         Seller with respect to NPB; and


                  (d)  any damage, destruction, or loss (whether or not 
         covered by insurance) to the Acquired Assets in excess of $250,000.



     3.10. Absence of Undisclosed Liabilities. The Seller has no Liability  that
will be  assumed  by Buyer  except  as  expressly  set forth  herein  and in the
schedules  and  attachments  hereto or in other written  agreements  between the
Parties.
<PAGE>



     3.11. Legal and Other Compliance.  Except for Intellectual Property and 
Environmental matters, which are addressed in ss.ss.3.16 and 3.25:


                  (a)  the Seller is in compliance with all applicable Laws
         the violation of which,  either  singularly or in the aggregate,  would
         have a Material  Adverse Effect on the NPB or the Acquired  Assets and,
         to  Seller's  Knowledge,   no  action,   suit,   proceeding,   hearing,
         investigation,  charge,  complaint,  claim,  demand, or notice has been
         filed or  commenced  against  any of them  alleging  any  failure so to
         comply; and


                  (b)  neither the  ownership nor use of properties of the
         NPB nor the  conduct  of the  business  of the NPB  conflicts  with the
         rights of any other Person or violates, or with the giving of notice or
         the passage of time or both will violate,  conflict with or result in a
         default,  right to  accelerate  or loss of rights  under,  any terms or
         provisions  of any of  their  charter  or  by-laws  or any  Lien,  law,
         ordinance,  rule or regulation,  any order, judgment or decree to which
         the NPB is a party or by which the NPB may be bound or affected, except
         for such  conflicts,  violations  and  defaults  which would not have a
         Material Adverse Effect.



     3.12. No Material Adverse Change. Since the date of the  Initial  Statement
of  Assets,  there has not been any  change  which has  resulted  in a  Material
Adverse  Effect and no event has  occurred  or  circumstance  exists  that would
reasonably be likely to result in such a Material Adverse Effect.


     3.13. Demand Plan. Seller has previously provided a Demand Plan for
the NPB to  Buyer,  which  plan  was  prepared  in good  faith  and in a  manner
consistent with past practice by Seller.  The Demand Plan is based upon a number
of assumptions  and estimates that,  while presented with numerical  specificity
and  considered  reasonable  by  the  Seller,  are  (i)  inherently  subject  to
significant business,  economic and competitive uncertainties and contingencies,
many of which are beyond the control of the NPB, and (ii) based upon assumptions
with  respect  to  future  business   decisions  that  are  subject  to  change.
Accordingly,  actual results may vary from the Demand Plan, and these variations
may be material. Consequently, the Demand Plan is not a representation by Seller
that the results therein will be achieved.



     3.14. Taxes. All Taxes  required to have been  withheld and paid with 
respect to the NPB in  connection  with amounts  paid or owing to any  employee,
independent  contractor,  creditor,  stockholder  or other third party have been
withheld and paid,  and there are no Liens or other  encumbrances  on any of the
Acquired Assets that arose in connection  with any failure (or alleged  failure)
to pay any Tax.
<PAGE>

     3.15. Real Property


                  (a)  The Acton  Facilities  are all of the real property
         that  are  part of the  Acquired  Assets.  Except  as set  forth in ss.
         3.15(a) of the Disclosure Schedule, with respect to the Acton Facility:

                           (i)  the Seller  has good and clear  record and
                  marketable  title to the  parcel  of real  property,  free and
                  clear  of  any  Lien,   except  for  installments  of  special
                  assessments   not  yet  delinquent  and  recorded   easements,
                  covenants,  and  other  restrictions  which do not  materially
                  impair the current use,  occupancy,  or value, of the property
                  subject thereto;

                           (ii)  there are no pending or, to the  Knowledge
                  of Seller, threatened condemnation  proceedings,  lawsuits, or
                  administrative  actions  relating  to the  property  or  other
                  matters  which  would  materiality  adversely  affect the use,
                  occupancy, or value thereof;

                           (iii) the buildings and improvements of the Acton
                  Facilities  are located  within the boundary lines of the real
                  property  being sold by Seller to Buyer,  are not in violation
                  of applicable setback requirements, zoning laws and ordinances
                  which  violations  would  materially  impair the current  use,
                  occupancy or value of the  property  subject  thereto,  do not
                  encroach on any easement which  encroachment  would materially
                  impair the current  use,  occupancy  or value of the  property
                  subject  thereto,  and the land does not  serve any  adjoining
                  property  for any purpose  which would  materially  impair the
                  current  use,  occupancy,  or  value of the  property  subject
                  thereto;

                           (iv)  to the  Knowledge of Seller each  facility
                  located  on  such  parcel  has  received   all   approvals  of
                  governmental  authorities  (including  licenses  and  permits)
                  required in connection with the ownership or operation thereof
                  and have been  operated  and  maintained  in  accordance  with
                  applicable laws, rules, and regulations;

                           (v) there are no leases,  subleases,  licenses,
                  concessions, or other agreements, written or oral, granting to
                  any  party or  parties  the right of use or  occupancy  of the
                  parcel  or  any  portion   thereof  except  for  licensees  or
                  concessions serving the premises;

                           (vi) there are no outstanding options or rights 
                  of first refusal to purchase such parcel, or any portion 
                  thereof or interest therein;
<PAGE>

                           (vii) there are no parties (other than the NPB or 
                  other employees of the Seller or MCI or Bell Atlantic) in
                  possession of such parcel;

                           (viii)  each  facility  located on such  parcel is
                  supplied with utilities and other  services  necessary for the
                  operation of such facility, as presently operated; and

                           (ix)  each parcel has direct  access to a public
                  road  or  has  access  to  a  public  road  via  a  permanent,
                  irrevocable,  appurtenant  easement  benefitting  such  parcel
                  adequate for the current use.
<PAGE>

     3.16. Intellectual Property


                  (a)  The Seller owns or has the right to use pursuant to
         license, sublicense, agreement, or permission all Assigned Intellectual
         Property.  Subject to obtaining all necessary  consents as disclosed in
         ss. 3.27 of the Disclosure Schedule, each item of Assigned Intellectual
         Property owned or used by the Seller in connection with the business of
         the NPB  immediately  prior to the Closing  hereunder  will be owned or
         available  for use by the  Buyer  on  identical  terms  and  conditions
         immediately  subsequent to the Closing  hereunder  except for facts and
         circumstances  specific to Buyer. Except as disclosed in ss. 3.16(a) of
         the Disclosure Schedule, to the knowledge of the Seller, the Seller has
         taken  all   necessary   action  to  protect   each  item  of  Assigned
         Intellectual Property, except for Assigned Licenses.


                  (b) Except as disclosed in ss. 3.16(b) of the Disclosure
         Schedule, to the Knowledge of the Seller, the Seller in connection with
         the NPB has not interfered with,  infringed upon,  misappropriated,  or
         otherwise come into conflict with any  intellectual  property rights of
         third parties  (excluding  patents pending but not yet issued as of the
         Closing Date), and there has never been any written charge,  complaint,
         claim, demand, or notice alleging any such interference,  infringement,
         misappropriation,  or  violation  (including  any claim that the Seller
         must license or refrain from using any intellectual  property rights of
         any third party).  Except as disclosed in ss. 3.16(b) of the Disclosure
         Schedule,  to the Knowledge of the Seller, Seller has provided to Buyer
         all documents concerning claims that a third party has interfered with,
         infringed upon,  misappropriated,  or otherwise come into conflict with
         any Assigned  Intellectual  Property rights of the Seller,  except with
         respect to Assigned Licenses.


                  (c)   Section   3.16(c)  of  the   Disclosure   Schedule
         identifies  each  patent or  registration  which has been  issued  with
         respect to the  Assigned  Intellectual  Property,  except for  Assigned
         Licenses, and identifies each pending patent application or application
         for  registration  which  has been made with  respect  to the  Assigned
         Intellectual  Property,  except for Assigned Licenses.  With respect to
<PAGE>

         each item of Assigned  Intellectual  Property required to be identified
         in section  3.16(c) of the  Disclosure  Schedule  to the  Knowledge  of
         Seller, no action, suit, proceeding,  hearing,  investigation,  charge,
         complaint,  claim,  or demand is pending  or, to the  Knowledge  of the
         Seller,   is  threatened  which  challenges  the  legality,   validity,
         enforceability,  use, or ownership of the item other than in the course
         of any  proceedings  in the U.S.  Patent and  Trademark  Office (or any
         international  equivalent)  relating to any pending patent or trademark
         application.


                 (d)  The Seller has  delivered to the Buyer  correct and
         complete  copies of all Assigned  Licenses listed on Schedule 1.2. With
         respect  to each  Assigned  License,  except  as set  forth in  Section
         3.16(d) of the Disclosure Schedule:

                           (i)  to the  Knowledge of Seller,  the license,
                  sublicense,  agreement,  or  permission  covering the Assigned
                  License is legal,  valid,  binding,  enforceable,  and in full
                  force  and  effect  and  will  continue  to be  legal,  valid,
                  binding,   enforceable,  and  in  full  force  and  effect  on
                  identical terms following the consummation of the transactions
                  contemplated hereby;

                           (ii) to the Knowledge of Seller, it is not in
                  breach or default of any Assigned License;

                           (iii)  to the  Knowledge of Seller,  no event has
                  occurred which with notice or lapse of time would constitute a
                  breach or  default  or permit  termination,  modification,  or
                  acceleration thereunder;  and, Seller has not provided written
                  notice of breach or default  to any  Licensor  of an  Assigned
                  License;

                           (iv)  to the Knowledge of the Seller, it has not
                  repudiated  any provision of an Assigned  License,  and it has
                  not received  written  notice from any Licensor of an Assigned
                  License that it has done so;

                           (v) to the Knowledge of Seller, each underlying
                  item  of   intellectual   property   is  not  subject  to  any
                  outstanding  injunction,  judgment,  order, decree, ruling, or
                  charge;


                  (e)  Except  as set  forth  in  Section  3.16(e)  of the
         Disclosure   Schedule,   no   action,   suit,   proceeding,    hearing,
         investigation,  charge, complaint,  written claim, or written demand is
         pending or, to the  Knowledge  of the Seller,  has been  threatened  in
         writing, which challenges the legality,  validity, or enforceability of
         the underlying item of Assigned  Intellectual  Property,  other than in
         the course of any proceedings in the U.S.  Patent and Trademark  Office
         (or any  international  equivalent)  relating to any pending  patent or
         trademark application.
<PAGE>

                  (f)  Other than in connection with the sale, manufacture
         or license  of  Products  in the  ordinary  course,  the Seller has not
         granted any  sublicense  or similar  right with respect to the Assigned
         Licenses.


                  (g)   To  the   Knowledge   of  Seller,   the   Assigned
         Intellectual  Property,  together with the licenses granted pursuant to
         ss. 8.2, constitutes all of the intellectual property necessary for the
         design, sale, marketing, distribution, maintenance and support (but not
         service) of the Products and having the Products manufactured;


                  (h)  The Seller has granted no licenses  with respect to
         the Assigned  Patents  except for those set forth in ss. 3.16(h) of the
         Disclosure Schedule.



     3.17. Inventories. The  inventory  of the  Seller  in  connection  with the
business of the NPB consists of raw  materials and  supplies,  manufactured  and
purchased parts, goods in process, and finished goods, all of which is saleable,
suitable and usable for the  production or  completion of saleable  products for
sale in the  Ordinary  Course of  Business,  except as  reflected in the Initial
Statement of Assets and the Closing Date  Statement  of Assets.  The  inventory,
taken as a whole,  reflected in the Initial  Statement  of Assets,  is valued in
accordance with the Accounting Convention. Since June 28, 1997, no inventory has
been sold or disposed of except in the Ordinary Course of Business of the NPB.



     3.18. Contracts. The Seller has  delivered  to the Buyer a correct  and  
complete copy of each material  Contract (as amended to date) listed on Schedule
2.1(h). Except as disclosed in ss. 3.18 of the Disclosure Schedule, with respect
to each Contract: (i) the agreement is legal, valid, binding,  enforceable,  and
in full  force  and  effect  in all  material  respects;  (ii)  to the  Seller's
Knowledge no party is in breach or default, and no event has occurred which with
notice  or  lapse of time  would  constitute  a breach  or  default,  or  permit
termination, modification, or acceleration, under the Contract; and (iii) to the
Seller's Knowledge no party has repudiated any provision of the Contract.


     3.19. There are no outstanding powers of attorney executed on behalf of any
of the Seller in respect of the NPB.



     3.20. Insurance and Risk Management. The NPB has been  covered  during the 
past 2 years by insurance in scope and amount  customary and  reasonable for the
businesses in which it has engaged during the aforementioned period.


     3.21. Litigation.  Except as  disclosed  in ss.  3.21 of the  Disclosure  
Schedule,  there are no  judicial  or  administrative  actions,  claims,  suits,
proceedings  or  investigations  pending  or, to the  Knowledge  of the  Seller,
threatened,  that would be  reasonably  likely to result in a  Material  Adverse
Effect  and the  Seller  has no  notice of any  action  seeking  to  enjoin  the
<PAGE>

consummation of the transactions contemplated hereby and to the Knowledge of the
Seller,  there is no Basis  for any such  action,  claim,  suit,  proceeding  or
investigation.  There are no judgments,  orders,  decrees,  citations,  fines or
penalties  heretofore  assessed  against  the  Seller  which have had a Material
Adverse Effect.


     3.22. Product Warranties; Defects; Liability. To the Knowledge of the 
Seller,  each product  manufactured,  sold,  leased, or delivered by the NPB has
been in conformity in all material respects with all applicable federal,  state,
local or foreign laws and regulations,  contractual  commitments and all express
and implied warranties.  Section 3.22 of the Disclosure Schedule includes copies
of the standard  terms and  conditions of sale or lease for the NPB  (containing
applicable guaranty, warranty, and indemnity provisions).



     3.23. Employees.


                  (a)  As of the date hereof,  to the  Knowledge of Robert
         Rennick  or  Chris  Sullivan  no  employee  on the  key  employee  list
         previously  provided  by Seller  to Buyer  has any  plans to  terminate
         employment  with the Seller or not accept  employment  with Buyer.  The
         Seller has not experienced any material labor disputes or work stoppage
         in the United  States  due to labor  disagreements  with  regard to the
         business of the NPB.  With respect to the  operations of the NPB in the
         United  States,  the  Seller is not nor has it ever been a party to any
         collective  bargaining  agreements and the NPB has not been the subject
         of any organizational activity.


                  (b)  With  respect to  Overseas  Employees,  there is no
         existing   material  labor  dispute  or  work  stoppage  due  to  labor
         disagreements specifically with regard to the business of the NPB.



     3.24. Employee Benefits.


                  (a)  Seller  Plans.  Seller  has  provided  to  Buyer  a
         description of the material terms of each material  Employee Plan which
         is  maintained by Seller or any Related  Entity which  benefits any NPB
         employee  of the  Seller  (a  "Seller  Plan").  For  purposes  of  this
         Agreement,  the term  "Employee  Plan"  means any U.S.  plan,  program,
         agreement,  policy or arrangement (a "plan"), whether or not reduced to
         writing,  that is: (i) a welfare  benefit  plan  within the  meaning of
         Section 3(1) of ERISA (a "Welfare  Plan");  (ii) a pension benefit plan
         within the meaning of Section 3(2) of ERISA; (iii) a stock bonus, stock
         purchase,  stock option,  restricted stock, stock appreciation right or
         similar  equity-based  plan;  or (iv) any other  deferred-compensation,
         retirement, welfare-benefit, bonus, incentive or fringe benefit plan or
         arrangement.


                  (b) The SAVE  Plan.  The SAVE Plan is  qualified  under
         Section 401(a) of the Code and its associated  trust is exempt from tax
<PAGE>

         under section 501(a) of the Code and each has been  administered in all
         material respects in accordance with its terms and with applicable law.
         Seller has received a favorable  determination letter from the IRS with
         respect  to the SAVE  Plan.  There has been no  non-exempt  "prohibited
         transaction"  within the meaning of Code Section 4975(c)  involving the
         assets of the SAVE Plan. All required  contributions  on account of the
         SAVE Plan have been made or accrued by the  Seller in  accordance  with
         GAAP. Section 3.24 of the Disclosure Schedule sets forth each and every
         pending or, to the knowledge of Seller,  threatened  lawsuit,  claim or
         other  controversy  relating  to the SAVE Plan,  other than  claims for
         benefits in the normal  course.  Seller has delivered to Buyer the SAVE
         Plan document and delivered or made available to Buyer all related SAVE
         Plan documents.


                  (c)  No Liability.  No circumstance  exists and no event
         (including  any action or the failure to do any act) has occurred  with
         respect to any Employee Plan (including,  for purposes of this ss. 3.24
         only, any non-U.S.  employee plan) maintained or formerly maintained by
         Seller or any Related Entity,  or to which Seller or any Related Entity
         is or has been  required to  contribute,  that could  subject  Buyer to
         Liability,  or the  assets of the NPB to any lien,  under  ERISA or the
         Code,  nor will the  transactions  contemplated  by this Agreement give
         rise to any such Liability or lien.


                  (d)   Multiemployer   Plans.   With   respect  to  Hired
         Employees,  neither  Seller  nor  any  Related  Entity  has or had  any
         liability to make payments or contributions to a multiemployer  plan as
         that  term is  defined  in ERISA  section  3(37),  and has no actual or
         potential  liability  under  ERISA  section  4201 for any  complete  or
         partial withdrawal from a multiemployer plan.



     3.25. Environment.


                  (a)  Except as disclosed  in ss. 3.25 of the  Disclosure
         Schedule:

                           (i)  the Seller in connection with the business
                  of the NPB and the Acton  Facilities  has  complied  and is in
                  compliance   with  all  applicable   Environmental   Laws  the
                  violation of which could have a Material Adverse Effect;

                           (ii)  the Seller in connection with the business
                  of the NPB and the Acton  Facilities has obtained,  and is and
                  has been in material  compliance  with the  conditions of, all
                  Environmental  Permits  required for the continued  conduct of
<PAGE>

                  the business of the NPB in the manner now conducted;

                           (iii)  the Seller in connection with the business
                  of the NPB and the Acton  Facilities  has  filed all  required
                  applications,  notices and other documents necessary to effect
                  the timely  renewal or issuance of all  Environmental  Permits
                  for the  continued  conduct of the business of the NPB and the
                  Acton Facilities in the manner now conducted;

                           (iv)  the Seller in connection  with the present
                  or  past  assets,   properties,   businesses,   leaseholds  or
                  operations of the business of the NPB or the Acton  Facilities
                  has not  received nor is subject to, nor within the past three
                  years has been  subject  to, any  outstanding  order,  decree,
                  judgment, complaint,  agreement, claim, citation, or notice or
                  is  subject  to  any  ongoing   judicial   or   administrative
                  proceeding  indicating that the Seller or the past and present
                  assets of the NPB or the Acton  Facilities  are or may be: (A)
                  in violation of any Environmental  Law; or (B) responsible for
                  the  on-site or off-site  storage or Release of any  Hazardous
                  Materials;

                           (v)  to the Knowledge of Seller,  no proceeding
                  related to the matters  covered by  subsection  (iv) have been
                  threatened within three years prior to the Closing Date;

                           (vi)  Section  3.25 of the  Disclosure  Schedule
                  lists all property  presently or previously  leased,  owned or
                  operated by the Seller in connection  with the business of the
                  NPB that has been  used in the  business  of the NPB or by any
                  other Person  (including  a prior owner or  operator)  for the
                  intentional disposal of Hazardous Materials;

                           (vii)  Section  3.25 of the  Disclosure  Schedule
                  sets forth a list of all  underground  storage  tanks owned or
                  operated  at any time at the  Acton  Facilities  or  currently
                  owned  and  operated  by the  Seller  in  connection  with the
                  business of the NPB; and

                           (viii)  There have been no Releases  of  Hazardous
                  Materials on or underneath the Acton  Facilities or any of the
                  real property  owned or leased by the business of the NPB that
                  would be reasonably likely to have a Material Adverse Effect.


                  (b)  For purposes of this ss. 3.25 only,  all references
         to the "Seller"  are intended to include any and all other  entities to
         which  the  Seller  is   considered   a  successor   under   applicable
         Environmental  Laws. The representations and warranties in this section
         are  the  only   representations   and   warranties   with  respect  to
         Environmental Laws or environmental  matters  notwithstanding any other
         language in this Agreement of general applicability.



     3.26. Government Contracts. The Contracts listed on Schedule 2.1(h) do not 
include any governmental contracts.
<PAGE>

     3.27. Consents.  Section  3.27 of the  Disclosure  Schedule  sets  forth a 
true, correct and complete list of the identities of any Person whose consent or
approval is required  with respect to any matter,  agreement or contract  (other
than immaterial matters,  agreements or contracts) and the matter,  agreement or
contract  to which  such  consent  relates  in  connection  with  the  transfer,
assignment or conveyance by the Seller of any of the Acquired Assets.


     3.28. Investment Intent.  Seller is acquiring the Cabletron Shares
for its own  account and not with a view to, or for resale in  connection  with,
any unregistered  distribution  thereof,  and Seller has no present intention to
sell, convey, dispose of or otherwise distribute any interest in or risk related
to the Cabletron Shares except pursuant to an effective  Registration  Statement
or in a manner  consistent  with the  requirements of the Securities Act. Seller
understands  that  the  Cabletron  Shares  have not been  registered  under  the
Securities by reason of a specific exemption from the registration provisions of
the Securities Act. Seller has had the opportunity to review the information set
forth in all of  Cabletron's  reports  filed with the  Securities  and  Exchange
Commission  since December 31, 1995 (the  "Reports").  In making its decision to
acquire  the  Cabletron  Shares,  Seller has relied  solely upon the Reports and
other publicly available information,  has not been provided with or relied upon
any  material  nonpublic  information  concerning  Cabletron  and has  carefully
considered the risks regarding Cabletron set forth in detail in the Reports. The
Seller is a sophisticated investor with knowledge and experience in business and
financial  matters and is able to bear the  economic  risk and lack of liquidity
inherent in holding the Cabletron Shares.



4. Representations and Warranties of the Byer. The Buyer  represents  and  
         warrants to the Seller that the  statements contained  in this ss. 4 
         are true,  correct and complete as of the date of  this   Agreement   
         and,   unless  a  date  is   specified  in  such representation  and 
         warranty,  will be true, correct and complete as of the Closing  Date 
         (as though  made then and as though the Closing  Date were substituted 
         for the date of this Agreement throughout ss. 4).



     4.1. Organization of the Buyer.  Each of Cabletron and Acquisition is a 
corporation  duly organized,  validly  existing,  and in good standing under the
laws of the state of its incorporation.



     4.2. Authority for Agreement. Each of Cabletron and  Acquisition  has the  
corporate  power and  authority  to execute and deliver  this  Agreement  and to
perform its obligations  hereunder.  All corporate  actions or proceedings to be
taken by or on the part of Cabletron and Acquisition to authorize and permit the
execution and delivery by Cabletron and  Acquisition  of this  Agreement and the
instruments  required to be executed and delivered by Cabletron and  Acquisition
pursuant  hereto,   the  performance  by  Cabletron  and  Acquisition  of  their
respective  obligations  hereunder,   and  the  consummation  by  Cabletron  and
Acquisition of the transactions contemplated herein, have been duly and properly
taken.  This  Agreement  has been duly  executed and  delivered by Cabletron and
<PAGE>

Acquisition and constitutes the legal, valid and binding obligation of Cabletron
and  Acquisition,  enforceable  against  each in  accordance  with its terms and
conditions.


     4.3. Litigation.  Buyer has no notice of any  action  seeking  to
enjoin  the  consummation  of the  transactions  contemplated  hereby and to the
Knowledge  of the Buyer,  there is no Basis for any such  action,  claim,  suit,
proceeding or investigation.



     4.4. Noncontravention.  Neither the execution and the delivery of this 
Agreement,  nor  the  consummation  of  the  transactions   contemplated  hereby
(including the assignments and assumptions referred to in ss. 2 above), will (i)
violate any  constitution,  statute,  regulation,  rule,  injunction,  judgment,
order,  decree,   ruling,  charge,  or  other  restriction  of  any  government,
governmental  agency,  or court to which Cabletron and Acquisition is subject or
any  provision  of their  respective  charter or bylaws or (ii)  conflict  with,
result in a breach of,  constitute a default under,  result in the  acceleration
of, create in any party the right to accelerate,  terminate,  modify, or cancel,
or require any notice under any agreement, contract, lease, license, instrument,
or other  arrangement to which either  Cabletron or Acquisition is a party or by
which  either is bound or to which any of either  Cabletron's  or  Acquisition's
assets is subject  (or result in the  imposition  of any lien upon its  assets),
except  for  violations,  breaches  or  defects  that  would not make a material
adverse  effect on Cabletron or  Acquisition.  Cabletron and  Acquisition do not
need to give any notice to, make any filing with,  or obtain any  authorization,
consent,  or approval of any government or governmental  agency in order for the
Parties to consummate the transactions contemplated by this Agreement (including
the assignments and assumptions referred to in ss. 2 above), except for required
filings  under the  Hart-Scott-Rodino  Act and foreign  pre-merger  notification
requirements, which filings have been made.


     4.5. Brokers' Fees.  Neither  Cabletron nor  Acquisition has any Liability 
or obligation to pay any fees or  commissions  to any broker,  finder,  or agent
with respect to the  transactions  contemplated  by this Agreement for which the
Seller could become liable or obligated.



     4.6. Registration Statement. The Form S-3 registration statement (the 
"Registration  Statement")  pursuant to which the Cabletron  Shares to be issued
pursuant to this Agreement will be registered with the Commission  shall not, at
the time the  Registration  Statement  (including  any amendments or supplements
thereto) is declared  effective by the Commission,  contain any untrue statement
of a material fact or omit to state any material fact necessary in order to make
the statements  included therein, in light of the circumstances under which they
were made,  not  misleading.  The  Registration  Statement  shall  comply in all
material respects as to form with the requirements of the Securities Act and the
rules and regulations thereunder.  Notwithstanding the foregoing, Buyer makes no
representation  or  warranty  with  respect to any  information  supplied by the
Seller or the officers and directors of the Seller and its Subsidiaries which is
<PAGE>

contained  in,  or  furnished  in  connection   with  the  preparation  of,  the
Registration Statement.


     4.7. SEC Reports and Financial  Statements.  Cabletron has timely
filed  with the  Commission  all forms,  reports  and other  documents  which it
believes  were  required  to be filed by it since  December  31,  1995 under the
Securities  Exchange Act and the  Securities  Act (as such  documents  have been
amended  since  the  time  of  their  filing,   collectively,   the  "Buyer  SEC
Documents").  The  Buyer  SEC  Documents,  including,  without  limitation,  any
financial statements or schedules included therein, at the time filed,  complied
in all material  respects with the  applicable  requirements  of the  Securities
Exchange  Act or the  Securities  Act,  as the  case  may be.  The  consolidated
financial  statements of Buyer included in the Buyer SEC Documents  comply as to
form in all material respects with applicable  accounting  requirements and with
the published rules and regulations of the Commission with respect thereto, have
been prepared in accordance  with GAAP applied on a consistent  basis during the
periods  involved  (except as may be indicated  in the notes  thereto or, in the
case of the unaudited  statements,  as permitted by Form 10-Q of the Commission)
and  fairly  present  in all  material  respects  (subject,  in the  case of the
unaudited  statements,  to normal,  recurring  audit  adjustments  which are not
material  in  amount)  the  consolidated  financial  position  of Buyer  and its
consolidated  Subsidiaries as at the dates thereof and the consolidated  results
of their operations and cash flows for the periods then ended.


     4.8. No Material Adverse Change.  Except as disclosed in Schedule
4.8,  since  the date of the  most  recent  Form  10-Q  filed by Buyer  with the
Commission,  Buyer has conducted its operations  only in the Ordinary  Course of
Business. There has not been any change which has resulted in a material adverse
effect on the business,  assets,  financial condition, and results of operations
of Buyer and no circumstances  exists that would be reasonably  likely to result
in such a material adverse effect.



     4.9. Employee Benefits. The Buyer 401(k) Plan is qualified  under  Section
401(a) of the Code and its  associated  trust is exempt  from Tax under  section
501(a) of the Code and each has been  administered  in accordance with its terms
and with  applicable  law.  All required  contributions  on account of the Buyer
401(k) Plan have been made or accrued by the Buyer in  accordance  in accordance
with GAAP.  Section  4.8 of the  Disclosure  Schedule  sets forth each and every
pending  or, to the  knowledge  of  Buyer,  threatened  lawsuit,  claim or other
controversy relating to the Buyer 401(k) Plan, other than claims for benefits in
the ordinary course.  Buyer has made the Buyer 401(k) Plan and related documents
available to Seller. The Company has received a favorable  determination  letter
from the IRS with respect to the Buyer 401(k) Plan.


5. Covenants. The Parties agree as follows:
<PAGE>



     5.1. General. Each of the Parties will use its best efforts to take all 
action  and to do all  things  necessary,  proper,  or  advisable  in  order  to
consummate and make effective the  transactions  contemplated  by this Agreement
(including satisfaction,  but not waiver, of the closing conditions set forth in
ss. 6 below and  including  the diligent  defense in good faith of any action or
proceeding which may threaten the consummation of the transactions  contemplated
hereby).



     5.2. Notices and Consents. The Seller will give any notices to third  
parties,  and Buyer and Seller will use  reasonable  efforts to obtain any third
party consents,  that are required to transfer the Acquired Assets to Buyer, and
any other  consent that the Buyer may  reasonably  request.  Each of the Parties
promptly will file  Notification  and Report Forms and related material that may
be required  to be filed with the Federal  Trade  Commission  and the  Antitrust
Division of the United States Department of Justice under the  Hart-Scott-Rodino
Act, and will make any further filings pursuant thereto that may be necessary or
requested in connection  therewith.  Notwithstanding any other provision of this
Agreement to the contrary,  until any third party consent is obtained,  or if an
attempted assignment  thereunder would be ineffective or would affect the rights
of the Seller  thereunder  so that Buyer would not in receive  all such  rights,
Seller and Buyer will  cooperate with each other to provide for the benefits of,
and to permit  Buyer to assume all  liabilities  under,  any such right,  claim,
Permit or Contract  any and all rights of Seller  against a third party  thereto
arising out of the breach or cancellation  thereof by such third party;  and any
transfer or assignment to Buyer by Seller of any property or property  rights or
any  contract or  agreement  which shall  require the consent or approval of any
third party shall be made subject to such consent or approval being obtained.


     5.3. Operation of Business. The Seller will not engage in any practice, 
take any action,  or enter into any  transaction  outside the Ordinary Course of
Business in respect of the NPB prior to Closing. Without limiting the generality
of the  foregoing,  prior to Closing,  Buyer and Seller will use all  reasonable
efforts  to (A) keep  available  to Buyer  the  services  of the  NPB's  present
employees, agents and independent contractors,  and (B) preserve for the benefit
of Buyer the  goodwill  of the NPB's  customers,  suppliers  and  others  having
business  relations with it and (C) cooperate in  establishing  the terms of the
SCI Systems, Inc. contract.


     5.4. Preservation of Business. The Seller will use all reasonable efforts 
to keep the business and properties of the NPB substantially  intact,  including
its  present  operations,   physical   facilities,   working   conditions,   and
relationships  with lessors,  licensors,  suppliers,  customers,  and employees,
other than the substitution of the Acton  Facilities for the Littleton  facility
and as otherwise  contemplated hereby or by other written agreements between the
parties.


     5.5. Access. The Seller  will  permit  representatives  of the Buyer to 
have access at all reasonable times, and in a manner so as not to interfere with
<PAGE>

the  normal  business  operations  of  the  NPB,  to all  premises,  properties,
personnel, business, financial management records, contracts and documents of or
pertaining to the NPB.


     5.6. Notice of Developments.  Each Party will give prompt  written notice 
to the other Party of any specific events occurring  subsequent to the execution
of this  Agreement  and prior to the Closing Date causing a breach of any of its
own representations  and warranties in ss. 3 and ss. 4 above.  Disclosure by any
Party pursuant to this ss. 5.6, however,  shall be deemed to amend or supplement
the   Disclosure   Schedule   for  the  purpose  of   determining   whether  the
representations  and  warranties  of the Seller  are true and  correct as of the
Closing Date for all  purposes,  including  for purposes of Section 9.2 and 9.3,
but  excluding for purposes of satisfying  the  conditions  set forth in Section
6.1(a).


     5.7. Exclusivity.  So  long  as  Buyer  (upon  Seller's  request)  
re-affirms its intention to consummate the transactions contemplated hereby, the
Seller  will  not  (and  the  Seller  will  not  cause  or  permit  any  of  its
Subsidiaries,  officers,  directors,  agents  or  Affiliates  to)  (i)  solicit,
initiate,  or encourage the submission of any proposal or offer from any Person,
or enter into or consummate any transaction,  relating to the acquisition of any
portion of the  Acquired  Assets  (other  than sales in the  Ordinary  Course of
Business) or (ii)  participate  in any  discussions or  negotiations  regarding,
furnish any information with respect to, assist or participate in, or facilitate
in any other manner any effort or attempt by any Person to do or seek any of the
foregoing.  The Seller will notify the Buyer immediately if any Person makes any
proposal, offer, inquiry, or contract with respect to any of the foregoing.


     5.8. Insurance.  The Seller shall assist  (including by providing  existing
title and/or title  insurance  information in Seller's  possession or control to
Buyer) Buyer in obtaining title insurance policies at Buyer's expense.


     5.9. Surveys.  With  respect to the Acton  Facilities,  the Seller  shall 
assist the Buyer in procuring a current survey at Buyer's expense,  of the Acton
Facilities,  prepared by a licensed  surveyor  and  conforming  to current  ALTA
Minimum Detail Requirements for Land Title Surveys.


     5.10. Employee Matters.


                  (a) Continued Employment.

                           (i) Buyer agrees to offer within five business
                  days of  receiving  Seller's  final list of [*]  Retained  NPB
                  Employees  employment to all of the NPB Employees  (determined
                  as of a date two weeks  prior to the  Closing  Date),  up to a
                  maximum of [*] NPB Employees less the Retained NPB Employees.
                  "NPB Employees" means all of those  individuals who, two weeks
                  prior to the proposed  Closing Date, are actively  employed by
                  Seller,  any  Affiliate  of  Seller  or its  Subsidiaries,  as

* Confidential Treatment
<PAGE>

                  regular  (not  temporary)  employees  and who are among  those
                  persons  listed on Exhibit H on the date hereof.  Seller shall
                  provide  Buyer with a proposed list of [*] NPB Employees to be
                  retained by Seller (the  "Retained  NPB  Employees")  at least
                  three weeks prior to the  proposed  Closing  Date.  No persons
                  listed on the key employee  list  previously  agreed to by the
                  Parties  shall  become  Retained  NPB  Employees  without  the
                  consent of Buyer  which  shall not be  unreasonably  withheld,
                  conditioned  or  delayed.  A final  list of [*]  Retained  NPB
                  Employees  shall be completed  two weeks prior to the proposed
                  Closing  Date. A certain  number of the Retained NPB Employees
                  are to be included in the Digital  Personnel  Team pursuant to
                  the  Reseller  Agreement.  For the  purposes  of this  Section
                  5.10(a),  any person who would  otherwise be an NPB  Employee,
                  but  is,  on the  Closing  Date:  (i) on a  leave  of  absence
                  approved by Seller or on  disability,  provided  such leave of
                  absence is expected in good faith not to exceed thirteen weeks
                  in total,  (ii) on a leave of absence  pursuant  to the Family
                  and Medical  Leave of 1993 (the "FMLA") or similar  applicable
                  non-U.S. law, (iii) on a leave of absence for military service
                  or  (iv)  as   otherwise   set  forth  in   Schedule   5.10(a)
                  (collectively,   "Permissible  Leave  of  Absence")  shall  be
                  considered  an NPB Employee.  Notwithstanding  anything to the
                  contrary  contained  herein,  Buyer  shall  not  otherwise  be
                  required to offer  employment to any  individual who is not on
                  the active  payroll on the Closing Date,  excluding any person
                  on  a  Permissible   Leave  of  Absence,   including   without
                  limitation  any  person  whose  leave  has  exceeded   his/her
                  authorization  or  entitlement   under  the  FMLA  or  similar
                  applicable  non-U.S.  law or  who is  otherwise  on  leave  of
                  absence from which  reinstatement  is not guaranteed by law or
                  who is on  unauthorized  leave of absence or whose  employment
                  has  terminated  or who has retired  under the Seller  Pension
                  Plan,  before  the  Closing  Date.  Those  to  whom  Buyer  is
                  obligated to offer employment hereunder are hereafter referred
                  to as the "Offerees."

                           (ii)  Seller shall provide Buyer with a list of
                  all NPB Employees with current work telephone numbers and home
                  addresses  as soon as possible  after the date of execution of
                  this  Agreement.   Within  five  business  days  of  receiving
                  Seller's final list of [*] Retained NPB Employees, Buyer shall
                  offer  employment in writing to all Offerees,  such employment
                  to commence as of the Closing  Date,  except that, in the case
                  of  any  Offeree  on a  Permissible  Leave  of  Absence,  such
                  employment will commence  following the Leave Expiration Date,
                  as  hereafter  defined.  Buyer  shall be required to hire only
                  those  Offerees  who on or before  the  Closing  Date have not
                  explicitly  refused the terms of employment  offered by Buyer.
                  Offerees who actually  commence  employment with the Buyer are
                  hereafter   referred   to  as  the  "Hired   Employees"   and,
                  individually,  as a "Hired  Employee".  If Buyer  hires an NPB
                  Employee  after  the  Closing  Date,  except  as  provided  in
                  paragraph  (c)  below,  or  any  other  individual  previously

* Confidential Treatment
<PAGE>

                  employed  by Seller or any  Affiliate  of Seller,  such person
                  shall  not  constitute  a  Hired   Employee.   The  terms  and
                  conditions of Buyer's offer to hire Offerees  shall be made in
                  writing and shall include  pertinent  conditions as determined
                  in the sole discretion of Buyer, subject to the following:

                                    (A)  Buyer  will  employ  the Hired
                           Employees  at will,  except  in those  cases in which
                           Buyer  and a  Hired  Employee  enter  into a  written
                           contract of employment on or before the Closing Date;
                           provided, however, that Buyer agrees not to terminate
                           any Hired  Employee  other than for Cause  during the
                           six month period  immediately  following  the Closing
                           Date (the  "Initial  Employment  Period").  For these
                           purposes, "Cause" shall mean materially deficient job
                           performance,  material  violation  of  any  published
                           employment  policy or  practice of the Buyer or other
                           misconduct  that could be  harmful  to the  business,
                           interests   or   reputation   of  the  Buyer  or  any
                           Subsidiary  of Buyer for whom the Hired  Employee  is
                           providing  services,  each as determined by the Buyer
                           in its reasonable judgment.

                                    (B)  Each  of the  Hired  Employees
                           shall initially be assigned to such position as shall
                           be determined by Buyer, but with responsibilities and
                           duties  reasonably  comparable  to those of the Hired
                           Employee  immediately  prior  to  the  Closing  Date,
                           except as otherwise  mutually agreed by Buyer and the
                           Hired Employee.

                                    (C)  Commencing  on the  date  each
                           Hired Employee  commences active  employment with the
                           Buyer and  except  as  otherwise  expressly  provided
                           herein, Hired Employees in the United States shall be
                           eligible to participate in all Employee Plans offered
                           to  comparably  situated  employees  of  Buyer in the
                           United  States to the extent  such  participation  is
                           permitted  by  applicable  plan  terms and  generally
                           applicable Buyer policies.  For purposes of seniority
                           and vacation,  personal and sick time  accrual,  each
                           Hired  Employee  shall receive  credit with Buyer for
                           service  while  employed by Seller.  With  respect to
                           Overseas  Employees,  comparable  provisions  will be
                           made, in all cases in accordance with local law.

                           (iii)  Buyer  shall  have no  duty  to hire  any
                  Offeree  who  has  not  met,  as of the  date  such  Offeree's
                  employment was to begin pursuant to this Section  5.9(a),  the
                  conditions set forth in Buyer's written offer of employment or
                  who has  explicitly  rejected  Buyer's  offer of employment or
                  resigned  on or  before  the  Closing  Date.  Such  terms  and
                  conditions may include the requirement that the Offeree report
<PAGE>

                  to  work on such  date,  following  the  Closing  Date,  as is
                  specified in Buyer's  written offer of employment,  unless the
                  Offeree  is on a  Permissible  Leave  of  Absence  or,  on the
                  Closing Date, is absent due to vacation or personal illness or
                  injury  as  hereinafter  provided.  An  Offeree  who  has  not
                  explicitly  rejected  Buyer's offer of employment or resigned,
                  but is on a  Permissible  Leave of Absence on the Closing Date
                  shall be  treated as a Hired  Employee  for  purposes  of this
                  Agreement as of 12:01 a.m. of the day  following  the date the
                  leave expires (which date of expiration is elsewhere  referred
                  to as the "Leave Expiration Date"),  provided,  however,  that
                  (i) the Offeree had not explicitly  rejected the Buyer's offer
                  of employment or resigned on or before the Closing Date;  (ii)
                  the Offeree  applies for  instatement  to employment  with the
                  Buyer in a timely  manner,  in  accordance  with the  terms of
                  his/her  leave,  applicable  law and this  ss.5.10;  (iii) the
                  Offeree has met, as of the Leave  Expiration  Date,  all other
                  applicable  conditions  precedent  to  employment;   (iv)  the
                  Offeree,  in the case of leave due to the  Offeree's  personal
                  illness or  injury,  has been  medically  cleared to return to
                  active  employment  without  restrictions or with restrictions
                  which constitute a reasonable  accommodation  under applicable
                  law,  (iv) the  termination  of the leave is not the result of
                  the misconduct of or a failure to act by such Offeree, and (v)
                  for  Offerees  on  disability  or  personal  leave,  that such
                  Offeree  returns to work  within 13 weeks of the onset of such
                  disability or leave (or as set forth in Schedule 5.10(a)).  An
                  Offeree who has not explicitly  rejected Buyer's written offer
                  of employment or resigned prior to Closing shall not be deemed
                  to have failed to report to work on the date specified in such
                  offer if the  Offeree is absent due to  vacation  approved  by
                  Seller in advance of the Closing Date and in  accordance  with
                  Seller's  generally  applicable  policies  or as a result of a
                  personal  illness or injury which results in the Offeree being
                  absent from work for five (5) or fewer  consecutive  work days
                  on or after  the  Closing  Date,  but such  Offeree  shall not
                  become  a  Hired  Employee  until  the  date on  which  he/she
                  actually commences employment with the Buyer.

                           (iv)  Seller shall  terminate the employment of
                  or accept the  retirement  of each NPB  Employee  (other  than
                  Retained NPB Employees)  effective as of the date  immediately
                  preceding the date such NPB Employee is to commence employment
                  with the Buyer as set forth herein.


                  (b) Employee Benefits.

                           (i)  Defined  Benefit Pension Plan. Each Hired
                  Employee will cease  accruing  benefits in the Seller  Pension
                  Plan and the Restoration  Pension Plan as of the Closing Date,
                  or such Hired  Employee's  Leave  Expiration  Date,  if later,
                  (such  applicable  date  hereinafter  referred to as the "Plan
                  Eligibility  Date"),and Seller shall take all necessary action
                  to ensure that each Hired  Employee is fully  vested in his or
<PAGE>

                  her accrued benefit as of the Plan  Eligibility Date under the
                  Seller Pension Plan and the Restoration Pension Plan.

                           (ii)  Defined Contribution Plan. As of the Plan
                  Eligibility Date of a Hired Employee, such Hired Employee will
                  cease contributing to the SAVE Plan, and the Seller shall take
                  all  necessary  action to ensure  that such Hired  Employee is
                  fully vested in his or her account balance under the SAVE Plan
                  and the  Restoration  SAVE Plan.  Each Hired Employee shall be
                  eligible  to   participate  in  the  Buyer  401(k)  Plan  upon
                  commencement  of employment  with Buyer in accordance with the
                  terms of the Buyer 401(k) Plan  (including any term of general
                  application  excluding a class of employees  from  eligibility
                  for such  plan).  The Buyer  401(k)  Plan shall  recognize  as
                  service credit for purposes of eligibility  for  participation
                  and  vesting all  service  credited  under the SAVE Plan for a
                  Hired  Employee as of the Hired  Employee's  Plan  Eligibility
                  Date.

                           (iii)  Transfer  of Assets of the Save Plan.  As
                  soon as practicable  after the Closing Date, Seller will amend
                  its SAVE Plan to spin off and  transfer an amount equal to the
                  account  balances  of the  Hired  Employees  in the SAVE  Plan
                  valued as of the most recent valuation date preceding the date
                  the transfer is made to the Buyer 401(k) Plan. Notwithstanding
                  anything in this  subparagraph  to the  contrary,  if Buyer is
                  unable in good faith to arrange for the  transfer to the Buyer
                  401(k)  Plan,  such  transfer  shall  not  be  executed  until
                  appropriate  arrangements  are  made.  The  transfer  will  be
                  accomplished in full compliance with the applicable provisions
                  of ERISA,  the Code, and regulations  and rulings  promulgated
                  thereunder.  Seller and Buyer agree to cooperate  fully and to
                  file in a timely manner whatever  reports,  forms, and notices
                  as are necessary  under  applicable law as a result of, and to
                  effect, the transfer. The transfer will be accomplished by way
                  of a single  transfer  of plan  assets  constituting  cash and
                  liabilities,  except that any  outstanding  participant  loans
                  from the SAVE Plan to Hired  Employees that are not in default
                  may be  transferred  in kind to the extent not repaid prior to
                  the  transfer.  Seller  agrees to provide to Buyer in a timely
                  manner  all  information  for each Hired  Employee,  including
                  without limitation, accrued benefits under the SAVE Plan as of
                  the date of transfer,  vesting service, and any other employee
                  information  required by Buyer to determine  benefits  payable
                  from the Buyer 401(k) Plan.

                           (iv) Welfare Plans.

                                    (A)   Each  Hired  Employees  shall
                           cease  participating in all Welfare Plans,  programs,
                           payroll  practices  or  arrangements   maintained  by
                           Seller as of 12:01 a.m. on such Hired Employee's Plan
                           Eligibility Date, unless a different date is required
<PAGE>

                           by  law.  Under  all  of  such  plans,   programs  or
                           arrangements,   a   Hired   Employee's   service   as
                           recognized   under  the   comparable   Seller  plans,
                           programs,  payroll practices and arrangements will be
                           credited  as  service  with  Buyer  for  purposes  of
                           determining    participation   and   benefit   levels
                           thereunder  to the same extent as credited by Seller,
                           unless  otherwise  prohibited  by law or the terms of
                           any  of  Buyer's   plans  and  programs  that  cannot
                           reasonably be amended.

                                    (B)  Buyer will offer  coverage for
                           medical and dental  benefits,  group life  insurance,
                           and  short-term  and long-term  disability  insurance
                           coverage  as of 12:01 a.m. on the day  following  the
                           Plan  Eligibility Date to each Hired Employee and his
                           or her  dependents  (as that term is  defined  by the
                           respective  Buyer plans) in accordance with the terms
                           of the relevant  Buyer benefit plans  (including  any
                           term excluding a class of employees from  eligibility
                           for such  plan),  except to the extent  provided  for
                           herein or,  with  respect to Overseas  Employees,  as
                           required  by law.  Buyer  will  waive any  applicable
                           waiting  periods for  participation  under such plans
                           and  will  impose  no   limitation   on  coverage  or
                           participation   with   respect   to  a   pre-existing
                           condition   of  a  Hired   Employee  or  his  or  her
                           dependents,  provided  that such  Hired  Employee  or
                           dependent  of a  Hired  Employee  has  satisfied  any
                           pre-existing    condition    limitation   under   the
                           comparable  Seller Plan, and that such Hired Employee
                           or his or her dependent  enroll in the relevant Buyer
                           benefit plan upon initial eligibility as specified in
                           such plans.  Buyer and Seller  shall  coordinate  (or
                           cause    insurance    carriers    or   third    party
                           administrators to coordinate) medical benefits claims
                           for Hired Employees under their  respective  plans so
                           as to carry out the provisions  above with respect to
                           Buyer's  medical  benefits  and  carry  out the other
                           applicable provisions of this Agreement.

                           (v)  Vacation. Except as otherwise required by
                  law, within 35 days after Closing, Seller shall pay each Hired
                  Employee, by lump sum payment, for the amount of their accrued
                  but  unused   vacation  as  of  such  Hired   Employee's  Plan
                  Eligibility  Date to the extent such accrued  vacation exceeds
                  ten days. Any remaining  accrued vacation not paid for in this
                  manner shall be retained by such Hired Employees under Buyer's
                  vacation  policy  and  shall  be  available  for  use by  them
                  immediately.   Each  Hired  Employee  shall  begin  to  accrue
                  vacation,  in  addition  to  such  Hired  Employee's  retained
                  vacation  accrual,  under,  and subject to, the Buyer vacation
                  policy as of the date such Hired Employee commences employment
                  with  Buyer.  Each  Hired  Employee  with 20 or more  years of
                  service  with  Seller  as  of  such  Hired   Employee's   Plan
                  Eligibility  Date  shall  receive a  beginning  accrual,  upon
                  commencement of employment with Buyer, of 5 days personal/sick
                  time  and  shall  thereafter,   along  with  all  other  Hired
<PAGE>

                  Employees,  accrue  sick/personal  time under, and subject to,
                  the Buyer personal/sick time policy.

                           (vi)   One-time  Pension  Replacement  Payment.
                  Buyer shall make a cash  payment to each Hired  Employee  upon
                  such Hired Employee's commencement of employment with Buyer in
                  an amount equal to the grossed-up value (assuming an effective
                  average  tax  rate  of 35%  for all  Hired  Employees)  of the
                  product   of  4%   multiplied   by   such   Hired   Employee's
                  "compensation"  (as  determined  under the Seller Pension Plan
                  and  subject to the annual  limit on  compensation  under Code
                  section  401(a)(17)) for the 1997 calendar year, provided that
                  such Hired  Employee  shall as a condition of employment  with
                  Buyer agree to repay such amount in full to Buyer in the event
                  such Hired Employee's  employment with Buyer terminates during
                  the six-month period immediately following the Closing Date.

                           (vii)   Matching   Contribution.   As   soon  as
                  practicable  following  the close of the 1998  calendar  year,
                  Buyer shall make a cash payment to each Hired  Employee who is
                  employed by Buyer as of the last day of the 1998 calendar year
                  in an  amount  equal  to the  grossed-up  value  (assuming  an
                  effective  average tax rate of 35% for all Hired Employees) of
                  a  30%  match  on  the  first  6%  of  the  Hired   Employee's
                  compensation  (as  determined  under the Buyer 401(k) Plan and
                  subject to the annual limit on compensation under Code section
                  401(a)(17))  deferred  by the Hired  Employee  under the Buyer
                  401(k) Plan for the 1998  calendar  year,  provided,  however,
                  that  Buyer  shall  have no  obligation  to make any such cash
                  payment in the event that Buyer  provides an equivalent  level
                  of matching  contribution (without regard to any gross-up) for
                  the benefit of Hired Employees under the Buyer 401(k) Plan.


                  (c)  Termination  at Law.  In the event  that any Hired
         Employees  outside the United  States are  entitled by law to severance
         payments,  Seller and Buyer  shall  share the costs of these  severance
         payments equally.


                  (d)  Overseas  Employees.  On the Closing Date,  Seller
         shall transfer the employment of the Overseas  Employees  identified by
         country on Exhibit F. To the extent  that,  by  operation of law or any
         agreement  binding  Seller,  the transfer of employment of any Overseas
         Employee requires the Buyer to assume any pension or similar obligation
         related to an employee's  tenure as an employee of Seller,  Seller will
         transfer to Buyer or its designated  Subsidiary on the Closing Date the
         monies  necessary  to  fund  the  obligation  or  will  otherwise  make
         available  to the  relevant  Overseas  Employees  all of their  accrued
         benefits in their pension plans. If the Parties  mutually agree that is
         not desirable or it is not possible for Seller to transfer to Buyer the
         employment  of any  Overseas  Employee on the Closing Date because of a
         Local  Transfer  Impediment,  Seller and Buyer  shall take all  actions
         reasonably  necessary to eliminate the Local  Transfer  Impediment  and
<PAGE>

         Seller  shall take all actions  reasonably  necessary  to transfer  the
         employment of all Overseas Employees located in the affected country as
         soon as possible.


                  (e)  Prior to Closing,  Seller shall  disclose full and
         accurate  details of any employee  benefit plans including  pension and
         insurance benefits payable to the Overseas Employees.



     5.11. Access to Records.


                  (a)  General.  For a period  of seven  years  after the
         Closing Date, the Seller and its representatives  shall have reasonable
         access to any books and records of the NPB in the  possession  of Buyer
         to the extent that such access may reasonably be required by the Seller
         in connection with matters relating to or affected by the operations of
         the NPB prior to the  Closing  Date.  For a period of seven years after
         the  Closing  Date,  the  Buyer  and  its  representatives  shall  have
         reasonable  access to any books and  records  related to the NPB in the
         possession  of Seller to the extent that such access may  reasonably be
         required  by the  Buyer  in  connection  with  matters  relating  to or
         affected  by the  operations  of the NPB after the Closing  Date.  Such
         access shall be afforded upon receipt of reasonable  advance notice and
         during normal business hours. If either Party desires to dispose of any
         of such books and records prior to the  expiration  of such  seven-year
         period,  such Party shall,  prior to such  disposition,  give the other
         Party a  reasonable  opportunity,  at such other  Party's  expense,  to
         segregate  and remove  such books and  records as such other  Party may
         select.


                  (b)  Product-Related  Claims.  Seller  agrees  to  use
         reasonable  efforts to provide  Buyer prior to Closing with any written
         materials  in Seller's  possession  or control that are relevant to any
         intellectual  property  infringement,  epidemic field failure,  product
         liability or other  material  related claims  previously  made by third
         parties  concerning any Product.  In the event that, in the future, any
         of the  Products  becomes  the  subject  of any  intellectual  property
         infringement,  epidemic  field  failure,  product  liability  or  other
         material related claim,  Seller agrees to use reasonable efforts to (i)
         provide to Buyer any written materials or other information in Seller's
         possession  or  control  which are  relevant  to such  claim,  and (ii)
         provide such other assistance as may be reasonably  requested by Buyer.
         Buyer shall reimburse Seller for all out-of-pocket expenses incurred by
         Seller,  subject to prior  approval of major expenses and excluding any
         expenses  for  which  Seller is  required  to  provide  indemnification
         pursuant to Section 9. Notwithstanding the foregoing, Seller shall have
         no  obligation  to provide any  materials or disclose  any  information
         which  it is  prohibited  by  law  or by  contract  from  providing  or
         disclosing to Buyer.
<PAGE>

                  (c)  Contracts. Seller agrees to use reasonable efforts
         to deliver to Buyer  prior to Closing a correct  and  complete  copy of
         each Contract not previously delivered to Buyer.


                  (d)  Licensing   Programs;   Assigned   Patents   and
         Trademarks.  Seller agrees to use  reasonable  efforts to provide Buyer
         prior to Closing with any written  materials in Seller's  possession or
         control that are relevant to the Licensing  Programs.  Seller agrees to
         use  reasonable  efforts to  provide  Buyer  prior to Closing  with any
         written  materials in Seller's  possession or control that are relevant
         to any  infringement or alleged  infringement of any Assigned Patent or
         Assigned Trademark.


                  (e)  Environmental Reports. The Seller shall deliver or
         otherwise make  available for  inspection the Buyer true,  complete and
         correct  copies as result of any reports,  studies,  analyses,  test or
         monitoring in Seller's possession,  prepared since November 1, 1989 for
         the Acton Facilities  pertaining to Hazardous Materials in, on, beneath
         or  adjacent  to said  facilities  or  regarding  the  compliance  with
         applicable Environmental Laws as said facilities.


     5.12. Transfer  of  Acquired  Assets  Located  Outside the United
States.  Buyer and Seller  understand  and agree that  Acquired  Assets  located
outside  the United  States  are the  property  of and  Overseas  Employees  are
employed by Seller  operating  in the  countries  listed in Schedule  2.1(x) and
Exhibit  F, and that  transfers  of such  assets and of the  employment  of such
persons, as provided for in this Agreement,  shall be made to Buyer operating in
each of the  respective  countries,  the  identity and address of which shall be
designated to Seller prior to the Closing Date.  Buyer agrees that it will cause
its  Subsidiaries  to take all actions and execute and deliver any  documents or
instruments  necessary  to complete  the  transfer of  Acquired  Assets  located
outside of the United  States and the  employment  of Overseas  Employees on the
Closing Date.


     5.13. Assistance  in  Effecting  Transfer of Overseas  Assets and
Employees.  Buyer shall  cooperate with Seller in their efforts to eliminate any
Local  Transfer  Impediment  affecting  the  transfer of Acquired  Assets or the
employment  of  any  Overseas  Employee.  In the  event  of an  occurrence  of a
continuing  Local  Transfer  Impediment,  prior to the  transfer of any Acquired
Assets or Overseas Employees,  Seller and Buyer shall take all action reasonably
necessary  to allow  Buyer to enjoy the benefit of the  Acquired  Assets and the
Overseas Employees.



     5.14. Bulk Sales Compliance. Buyer hereby waives compliance by Seller with 
the provisions of the Bulk Sales Law of any state.
<PAGE>



     5.15. Transfer Taxes. Seller  and Buyer  agree to share  equally  all Taxes
in  connection  with the transfer of the Acquired  Assets  hereunder  other than
Taxes measured by or based upon either Party's income.



     5.16. Manufacture of NPB Products. After the  Closing,  Seller  agrees to 
manufacture the Products at Seller's manufacturing facilities in Taiwan and Ayr,
Scotland [*] following  Closing and at arm's length  negotiated prices for up to
an additional  twelve  months.  Seller shall provide a 12 months  manufacturer's
warranty for products  delivered from such facilities.  Buyer agrees to assume a
certain manufacturing  agreement currently being renegotiated between the Seller
and SCI Systems,  Inc.  provided the final  agreement is acceptable to Buyer and
the term is not more than one year. Buyer agrees to advise Seller promptly after
the  provision of the final  agreement  whether such  agreement is acceptable to
Buyer.


     5.17. Transitional Services. Seller will provide  transitional  payroll,  
business  systems,  accounting and facilities  services and leased facilities at
the pro rata fully loaded costs  currently  allocated for such services plus any
incremental  costs  incurred by Seller to offer such services to Buyer for up to
one year following the Closing or any closing in any foreign country.


     5.18. Littleton Occupancy.  Seller agrees that, if necessary,  it
will enter into a building  occupancy  agreement  with respect to the portion of
Littleton  facility currently used in connection with the NPB to Buyer for up to
5 months following Closing, while the Acton Facilities are being re-fitted, at a
rate consistent with current fully loaded occupancy costs.


     5.19. Acton Occupancy.  Buyer agrees that, if necessary,  it will
enter into a building  occupancy  agreement with respect to the Acton Facilities
for up to 5 months  following  Closing at a rate consistent with Seller's former
fully loaded occupancy costs.


     5.20. Space for  Telecommunications.  Buyer agrees to arrange for
Seller  to  occupy  at a nominal  cost the  portion  of the  larger of the Acton
Facilities   which   houses  the  MCI  and  Bell   Atlantic   telecommunications
infrastructures for as long as it houses such infrastructures.


     5.21. Refit of Acton Facilities.  Buyer has paid Seller as part of
the cash portion of the Purchase Price $2,000,000  towards the cost of refitting
the Acton Facilities for the anticipated use thereof by Buyer.  Buyer and Seller
will  agree on a general  understanding  regarding  the  nature and scope of the
refit work and Seller hereby agrees that it shall be  responsible  to cause such
refitting  of  the  Acton  Facilities  to  be  undertaken  and  completed  using
appropriate and responsible  designers and contractors to complete such refit as
soon as reasonably possible.  Throughout such refitting Seller shall communicate
with Buyer regarding details of the refitting and in cooperation with Buyer make
such  changes  to the  refit  work as is needed  from  time to time for  Buyer's
anticipated use of the Acton  Facilities.  Buyer shall be responsible to pay for

* Confidential Treatment
<PAGE>

any cost of the refitting which exceeds  $2,000,000.  However,  Seller agrees to
promptly advise Buyer as soon as Seller first  anticipates  that there is likely
to be any cost overrun or should a cost overrun occur.  Thereafter  Seller shall
proceed as directed by Buyer to suspend, alter or complete the refitting. Seller
shall provide a written  accounting of funds expended on the refit and shall not
be entitled to any fee for its services with respect to assisting  Buyer with or
overseeing the refitting.


     5.22. Distributors and Resellers.  Seller agrees to use reasonable efforts 
to assist Buyer in negotiating prior to Closing satisfactory agreements with the
NPB's major third party distributors and resellers.


     5.23. Retention Program.  Seller shall grant the right to receive
bonuses of up to [*] to NPB  Employees  before the Closing  Date as an incentive
for such employees to remain in the employment of Seller between the date hereof
and the Closing Date, to become Hired  Employees and to remain in the employment
of Buyer (the "New Bonuses"). Seller has previously granted the right to receive
so-called  "stay-put"  bonuses to certain NPB Employees the payment of which are
presently  expected to extend beyond the Closing Date (the  "Existing  Bonuses";
together with the New Bonuses,  the "Bonuses").  Seller shall remain responsible
for the total amount of the Existing Bonuses and the New Bonuses paid to the NPB
Employees,  regardless of whether such amounts are paid before or after such NPB
Employees become Hired Employees.


     5.24. Licences. Prior to Closing, Seller shall disclose to Buyer the 
existence  of  any  grant  of  any  license  or  sublicense  of  any  rights  or
modification  of any  rights  under or with  respect  to,  or  entered  into any
settlement   regarding  any   infringements  of  its  rights  to,  any  Assigned
Intellectual Property all arising after the date hereof other than in connection
with the sale, manufacture or license of Products in the ordinary course.


     5.25. Employment Contracts. Prior to Closing, Seller shall disclose to 
Buyer the existence of any material employment contract or collective bargaining
agreement  entered into,  written or oral, or  modification  of the terms of any
existing such contract or agreement all arising after the date hereof.



     5.26. Litigation. Prior to Closing,  each Party shall disclose to the other
the existence of any of the following matters which arise after the date hereof:
any  judicial  or  administrative   actions,   claims,  suits,   proceedings  or
investigations pending or, to the Knowledge of the such Party, threatened,  that
would be reasonably  likely to result in a Material Adverse Effect or a material
adverse  effect to the Buyer,  as the case may be.  Prior to the  Closing,  each
Party shall disclose to the other any notice to such party of any action seeking
to enjoin the  consummation of the transactions  contemplated  hereby and to the
Knowledge of such Party, the existence of any Basis for any such action,  claim,
suit,  proceeding  or  investigation.  Each Party  agrees to use its  reasonable
efforts to defend  against any action,  suit, or proceeding  before any court or

* Confidential Treatment
<PAGE>

quasi-judicial or administrative agency of any federal, state, local, or foreign
jurisdiction wherein an unfavorable injunction, judgment, order, decree, ruling,
or charge would (i) prevent consummation of any of the transactions contemplated
by this  Agreement or (ii) cause any of the  transactions  contemplated  by this
Agreement to be rescinded following consummation.


     5.27. Form 8-K Financial Statements.  Seller agrees to engage its
outside  accountants to assist,  at the Buyer's expense,  in the preparation and
audit of the financial statements required by Buyer for its 8-K. Buyer agrees to
notify Seller of the  financial  statements  required  within 5 days of the date
hereof.  Provided  that Buyer  complies  with the  foregoing,  Seller  agrees to
deliver such financial  statements  within 60 days after the Closing Date.  Such
financial statements shall be prepared in accordance with GAAP.



     5.28. Registration Statement. Prior  to  Closing  Buyer  shall  prepare  
and file with the  Commission  the  Registration  Statement  with respect to the
Cabletron  Shares  to be issued  pursuant  to this  Agreement  and shall use its
reasonable efforts to cause the Registration  Statement to become effective upon
or promptly  following  Closing and remain effective for a period of at least 90
days (or such  shorter  period  during  which  the  Seller  shall  have sold all
Cabletron  Shares),  provided  that the Buyer  shall  have the right to delay or
suspend such Registration Statement two times for an aggregate period of 60 days
under the following circumstances: (i) in the event of any event or circumstance
which necessitates the making of any changes in the Registration  Statement,  or
any document incorporated or deemed to be incorporated therein by reference,  so
that, in the case of the Registration  Statement, it will not contain any untrue
statement of a material  fact or any omission to state a material  fact required
to be stated therein or necessary to make the statements therein not misleading;
or (ii)  the  Buyer  is in  possession  of  material  information  that it deems
advisable not to disclose in a Registration Statement. Buyer agrees not to issue
any  securities  of Cabletron  pursuant to an effective  registration  statement
under the  Securities  Act for the first thirty days for which the  Registration
Statement is  effective.  Seller shall have the right to assign the rights under
this ss.  5.28 to any  purchaser  of not less than  one-third  of the  Cabletron
Shares from Seller in a private placement.  For purposes of ss.5.28,  the period
during which the Registration  Statement is suspended or delayed shall be deemed
a period during which the Registration Statement is not effective.


     5.29. Listing of Cabletron Shares. Buyer shall use all  reasonable  efforts
to cause the  Cabletron  Shares to be issued  pursuant to this  Agreement  to be
approved for listing on The New York Stock  Exchange (or the principal  exchange
on which Cabletron's Common Shares are then trading).


     5.30. Cabletron Shares. The Cabletron Shares will be imprinted with a 
legend substantially in the following form:
<PAGE>

         The shares  represented by this  certificate  have not been  registered
         under the Securities Act of 1933, as amended.

Such legend shall be removed from the  certificates  representing  the Cabletron
Shares upon Seller's request in order to deliver any shares sold pursuant to the
Registration Statement or whenever the legend is not required by applicable law.

Prior to effectiveness of the  Registration  Statement,  Seller must furnish the
Buyer  before  any  transfer  of  Cabletron  Shares  with (i) a written  opinion
reasonably  satisfactory  to the  Buyer  in  form  and  substance  from  counsel
reasonably  satisfactory to the Buyer by reason of experience to the effect that
the holder may transfer  Cabletron Shares as desired without  registration under
the  Securities  Act and (ii) a  written  undertaking  executed  by the  desired
transferee  reasonably  satisfactory to the Buyer in form and substance agreeing
to be bound by the restrictions on transfer contained herein.



     5.31. Future Assurances. From time to time after the  Closing  Date,  at 
the request of either Party hereto and at the expense of such Party, the Parties
hereto  shall  execute and deliver  such other  instruments  of sale,  transfer,
conveyance,  assignment  and  confirmation  and take  such  action  as Buyer may
reasonably  determine is necessary to transfer,  convey and assign to Buyer, and
to confirm Buyer's title to or interest in the Acquired Assets,  to put Buyer in
actual  possession  and  operating  control  thereof  and  to  assist  Buyer  in
exercising all rights with respect  thereto.  The Seller hereby  constitutes and
appoints Buyer and its successors and assigns as its true and lawful attorney in
fact in connection with the transactions  contemplated by this instrument,  with
full power of substitution, in the name and stead of the Seller but on behalf of
and for the benefit of the Buyer and its successors  and assigns,  to demand and
receive  any and all of the  assets,  properties,  rights  and  business  hereby
conveyed,  assigned,  and  transferred or intended so to be, and to give receipt
and releases for and in respect of the same and any part thereof,  and from time
to time to institute and prosecute, in the name of the Seller or otherwise,  for
the benefit of the Buyer or its successors  and assigns,  proceedings at law, in
equity,  or otherwise,  which the Buyer or its successors or assigns  reasonably
deem  proper in order to collect or reduce to  possession  or endorse any of the
Acquired  Assets and to do all acts and things in relation  to the assets  which
the Buyer or its successors or assigns reasonably deem desirable.



6.  Conditions to Obligation to Close



     6.1. Conditions to Obligation of the Buyer. The obligation of the Buyer to
consummate the transactions to be performed by it in connection with the Closing
is subject to satisfaction of the following conditions:

                  (a) Representations and Warranties. The representations
         and  warranties  set forth in ss. 3 above  shall be true,  correct  and
<PAGE>

         complete  when made and shall be deemed to have been made  again at and
         as of the Closing  Date and shall then be true,  correct and  complete,
         except where such failure to be true,  correct and complete  would not,
         in the aggregate,  have a Material  Adverse  Effect.  In addition,  the
         written  disclosure  pursuant  to ss.5.6 by Seller  shall be taken into
         account in determining  whether the  representations  and warranties of
         the  Seller  are  true  and  correct  as of the  Closing  Date  for all
         purposes,  including for purposes of Section 9.2 and 9.3, but excluding
         for  purposes of  satisfying  the  condition  set forth in this Section
         6.1(a);


                  (b) Performance by Sellers.  The Seller shall have 
         performed and complied with all of its covenants, agreements and 
         obligations hereunder in all material respects through the Closing;


                  (c)  Consents.  [Intentionally omitted];


                  (d)   Absence  of  Litigation.   No  action,  suit,  or
         proceeding  shall be  pending  before  any court or  quasi-judicial  or
         administrative  agency  of  any  federal,   state,  local,  or  foreign
         jurisdiction  which would in Buyer's good faith  judgment be reasonably
         likely to result in an unfavorable injunction, judgment, order, decree,
         ruling,  or charge (and no such injunction,  judgment,  order,  decree,
         ruling,   or  charge  shall  be  in  effect)  that  would  (i)  prevent
         consummation of the transactions contemplated by this Agreement or (ii)
         cause the  transactions  contemplated by this Agreement to be rescinded
         following consummation;


                  (e)  Anti-trust Matters. All applicable waiting periods
         (and any extensions thereof) under the Hart-Scott-Rodino Act shall have
         expired or otherwise been  terminated and any other material  consents,
         approvals or filings under any national, supranational or international
         merger control law the absence of which would prohibit the consummation
         of a  material  portion  of the  transactions  contemplated  under this
         Agreement shall have been obtained or made;


                  (f)  Certificates.  The Seller shall have delivered to the 
         Buyer a certificate signed by an authorized officer to the effect that 
         each of the conditions specified above in ss. 6.1 are satisfied
         in all respects;


                  (g)   Additional  Agreements.  The  Seller  shall  have
         entered into  agreements in form and substance set forth in Exhibits B,
         C, D, G and H  attached  hereto and the same shall be in full force and
         effect; and


                  (h)  No Material  Adverse Change.  There shall not have
         been any change which has resulted in a Material  Adverse Effect and no
         event has  occurred or  circumstance  exists that would  reasonably  be
         expected to result in such a Material Adverse Effect.
<PAGE>

The Buyer may waive any  condition  specified  in this ss. 6.1 if it  executes a
writing so  stating  at or prior to the  Closing  and such  waiver  shall not be
considered a waiver of any other provision in this Agreement  unless the writing
specifically so states.



     6.2. Conditions to Obligations of the Sellers. The obligation of the Seller
to consummate the  transactions  to be performed by them in connection  with the
Closing is subject to satisfaction of the following conditions:

                  (a) Representations and Warranties. The representations
         and  warranties  set forth in ss. 4 above  shall be true,  correct  and
         complete (in all material respects in the case of those representations
         and  warranties  which  are not by their  express  terms  qualified  by
         reference  to  materiality)  when made and shall be deemed to have been
         made  again  at and as of the  Closing  Date  and  shall  then be true,
         correct and complete (in all  material  respects,  in the case of those
         representations  and  warranties  which are not by their  express terms
         qualified  by  reference  to  materiality).  In  addition,  the written
         disclosure  pursuant to ss.5.6 by Buyer shall be taken into  account in
         determining  whether the  representations  and  warranties of Buyer are
         true and correct as of the Closing Date for all purposes, including for
         purposes of Section 9.4, but excluding  for purposes of satisfying  the
         condition set forth in this Section 6.2(a);


                  (b)  Performance by Buyer.  The Buyer shall have performed 
         and complied with all of its covenants, agreements and obligations 
         hereunder in all material respects through the Closing;


                  (c)   Absence  of  Litigation.   No  action,  suit,  or
         proceeding  shall be  pending  before  any court or  quasi-judicial  or
         administrative  agency  of  any  federal,   state,  local,  or  foreign
         jurisdiction  which would in Seller's good faith judgment be reasonably
         likely to result in an unfavorable injunction, judgment, order, decree,
         ruling,  or charge (and no such injunction,  judgment,  order,  decree,
         ruling,   or  charge  shall  be  in  effect)  that  would  (i)  prevent
         consummation of any of the transactions  contemplated by this Agreement
         or (ii) cause any of the transactions contemplated by this Agreement to
         be rescinded following consummation;


                  (d)  Consents.  [Intentionally omitted.];


                  (e)  Certificates.  The Buyer shall have delivered to the 
         Seller a certificate signed by the Chief Financial Officer of Buyer to
         the effect that each of the conditions specified above in ss. 
         6.2(a)-(c) is satisfied in all respects;


                  (f)  Anti-trust Matters. All applicable waiting periods
         (and any extensions thereof) under the Hart-Scott-Rodino Act shall have
         expired or otherwise been terminated and any other consents,  approvals
         or filings under any national,  supranational or  international  merger
<PAGE>

         control law the absence of which would prohibit the  consummation  of a
         material portion of the transactions  contemplated under this Agreement
         shall have been obtained or made; and


                  (g) Additional Agreements. The Buyer shall have entered
         into  agreements in form and substance set forth in Exhibits B, C, D, G
         and H attached hereto and the same shall be in full force and effect.



7. Confidentiality.  Each Party will treat and hold as such all of the 
         Confidential Information and refrain from using any of the Confidential
         Information except in connection with the transactions contemplated by
         this Agreement or the Reseller Agreement.  In the event that either 
         Party is requested or required (by oral question or request for 
         information or documents in any legal proceeding, interrogatory, 
         subpoena, civil investigative demand, or similar process) to disclose
         any Confidential Information, such Party will notify the other Party 
         promptly of the request or requirement so that the other Party may seek
         an appropriate protective order or waive compliance with the provisions
         of this ss. 7.  If, in the absence of a protective order or the receipt
         of a waiver hereunder, such Party is, on the advice of counsel, 
         required to disclose any Confidential Information, such Party may 
         disclose the Confidential Information; provided, however, that such
         Party shall use reasonable efforts to obtain, at the request of the 
         other Party, an assurance that confidential treatment will be accorded
         to such portion of the Confidential Information required to be 
         disclosed as the other Party shall designate.



8. Other Post-Closing Agreements


     8.1  Noncompetition.


                  (a)  Seller agrees that,  except as set forth below (1)
         [*],  it and its  affiliates  will not  design  or manufacture (or have
         designed or  manufactured  for it) and (2) [*] it and its  affiliates  
         will not  private  label  with any Digital Brand any products which are
         substantially  similar in function and performance to:

                           (i)   The  NPB  hardware   products  (and  the
                  software  incorporated  therein)  being  transferred to Buyer,
                  including without limitation,  those hubs, routers,  switches,
                  bridges,  structured  wiring  (DECconnect),  adapters,  remote
                  access  devices  (e.g.,  access  concentrators)  and  terminal
                  servers being transferred, and logical extensions thereof (one
                  example  of the  "logical  extension"  of a product  is a fast
                  ethernet switch to a gigabit ethernet switch);

* Confidential Treatment
<PAGE>

                           (ii)      Buyer     data     networking     and
                  telecommunication   hardware   products   (and  the   software
                  incorporated   therein)  identified  in  the  initial  Product
                  Roadmap (as defined in the  Reseller  Agreement),  and logical
                  extensions thereof;

                           (iii)  Data  networking  or   telecommunication
                  hardware  products  (and the  software  incorporated  therein)
                  specifically  designed  for  transporting  data between two or
                  more  computing  devices,  such as  hubs,  routers,  switches,
                  bridges,  structured wiring,  adapters,  remote access devices
                  (e.g., access concentrators) and terminal servers, and logical
                  extensions thereof.

                           (iv)  NPB  network  management  software  being
                  transferred  to  Buyer  (clearVISN),  and  logical  extensions
                  thereof  (other than  embedded  "client"  modules that have no
                  standalone function); and

                           (v)   Those   portions  of  Buyer's   SPECTRUM
                  software  identified in the initial  Product Roadmap which are
                  substantially  similar  to NPB  software  products  and simple
                  extensions  thereof,(including  without limitation,  clearVISN
                  and planned  extensions of clearVISN)  and logical  extensions
                  thereof.


                  (b)  Notwithstanding  Section 8.1(a) above:  (i) Seller
         shall  be  permitted  to  embed  networking  capabilities  of  its  own
         development or from third parties in products which are not and are not
         marketed  primarily as data  networking or  telecommunication  hardware
         products.  The parties  acknowledge that products  contemplated  within
         this  exclusion  include,  but are not limited to,  firewall and tunnel
         products,  proxy servers and extensions and  follow-ons  thereto,  (ii)
         Seller also shall be permitted to private  label with any Digital Brand
         and  resell  client  and  server  products  (which  are not and are not
         marketed  primarily as data  networking or  telecommunication  hardware
         products) developed and manufactured by a third party OEM which contain
         third party networking component products independently selected by the
         OEM  to  meet  Digital  or  customer  specified  form,  fit,  function,
         performance  and cost,  so long as  Digital  specifications  do not (1)
         specify a required  supplier or (2) result in effectively  limiting the
         OEM's choices to a single supplier  (unless in either case the customer
         specifically   requested  a  specific   supplier)  of  any   networking
         components  to be  incorporated  into such OEM  manufactured  client or
         server products.


                  (c)  The covenants set forth in Section 8.1(a): (i) are
         subject to  pre-existing  contractual  obligations  existing  as of the
         Closing  Date  and  not  transferred  to  Buyer  under  this  Agreement
         involving annual sales by Seller of not greater than $5 million for any
         individual  product  and $15 million in the  aggregate  and (ii) do not
         apply to any products in Seller's  current  portfolio being retained by
         Seller (and logical extensions  thereof) provided such products are not
         substantially  similar in  function  and  performance  to the  products
         described in Sections 8.1(a)(i) and (ii) above.
<PAGE>


                  (d)  Seller further agrees that during the initial term
         of the Reseller  Agreement it will not directly or  indirectly  without
         the prior written consent of Buyer, recruit, offer employment,  employ,
         engage  as a  consultant,  lure or entice  away or in any other  manner
         persuade or attempt to persuade any person to leave the employ of Buyer
         who is a Hired Employee;  provided,  however,  this provision shall not
         apply to (i) any Hired  Employee  terminated  by Buyer;  (ii) any Hired
         Employee whose employment with Buyer voluntarily  terminates within two
         years of the  Closing  Date after the later of twelve  months  from the
         Closing Date or six months after cessation of such person's  employment
         with Buyer;  and (iii) any Hired Employee whose  employment  with Buyer
         voluntarily  terminates more than two years after the Closing Date four
         months after cessation of such person's  employment  with Buyer.  Buyer
         agrees to  consider  in good  faith  requests  for  exceptions  to this
         provision.  Seller  agrees  that it will  not  directly  or  indirectly
         without  the prior  written  consent  of  Buyer,  employ or engage as a
         consultant any NPB Employee who is both not a Retained NPB Employee and
         not a Hired  Employee for one year following the later of separation or
         the Closing Date.



     8.2. Intellectual Property Licenses.


                  (a)  Buyer  hereby  grants to  Seller a  non-exclusive,
         royalty-free,  perpetual,  irrevocable,  worldwide license to make, use
         and  sell  products  and  services  using  the  Assigned   Intellectual
         Property, but excluding (i) the Assigned Trademarks except as permitted
         under the Reseller Agreement, and (ii) the Software Source Code License
         Agreement  between  Seller and Proteon Inc. dated June 30, 1995 and any
         other Assigned License to the extent not  sublicensable.  The foregoing
         license  to  Seller  does not  include  the  right of  Seller  to grant
         sublicenses  except  (i)  to  a  directly  or  indirectly  wholly-owned
         subsidiary of Seller for use  consistent  with this section,  (ii) to a
         third  party  solely  for the  purpose  of  manufacturing  products  or
         performing  services  on behalf of Seller or a directly  or  indirectly
         wholly-owned  subsidiary of Seller bearing the Digital Marks,  or (iii)
         to Intel  Corporation  pursuant to the form of agreement  referenced in
         the Settlement  Agreement  between Seller and Intel  Corporation  dated
         October 27, 1997.


                  (b)  Seller  hereby  grants  to Buyer a  non-exclusive,
         royalty-free,  perpetual,  irrevocable,  worldwide license to make, use
         and  sell  products  and  services  using  the  Retained  Patents.  The
         foregoing license to Buyer does not include the right of Buyer to grant
         sublicenses,  except  (i)  to a  directly  or  indirectly  wholly-owned
         subsidiary of Buyer for use consistent with this section,  or (ii) to a
         third  party  solely  for the  purpose  of  manufacturing  products  or
         performing  services  on behalf of Buyer or a  directly  or  indirectly
         wholly-owned Subsidiary of Buyer bearing the Digital Marks or Cabletron
         Marks.
<PAGE>


                  (c)    Seller    hereby   grants   Buyer   a   limited,
         non-exclusive,  royalty-free,  perpetual, worldwide license to Seller's
         remaining  Patents,  trade  secrets,  know-how  and  other  proprietary
         information  to the extent  necessary to make, use or sell the Products
         or the Products Under Development.  The foregoing license to Buyer does
         not  include the right of Buyer to grant  sublicenses,  except (i) to a
         directly  or  indirectly  wholly-owned  subsidiary  of  Buyer  for  use
         consistent  with this section,  or (ii) to a third party solely for the
         purpose of  manufacturing  Products or Products  Under  Development  on
         behalf of Buyer or a directly or indirectly  wholly-owned Subsidiary of
         Buyer.


                  (d)  Each Party  covenants  that it shall not  commence
         litigation  against the other for  infringement of any Patent committed
         prior to the Closing  Date.  The  foregoing  covenant  does not prevent
         either Party from initiating a compulsory  counterclaim arising from an
         infringement claim brought by the other.


                  (e)  Each Party  covenants  that it shall not  commence
         litigation  against the other for  infringement of any product existing
         as of the Closing Date of any Patent  committed after the Closing Date.
         The foregoing  covenant does not prevent either Party from initiating a
         compulsory  counterclaim  arising from an infringement claim brought by
         the other.


                  (f)   Seller  hereby  grants  Buyer  a   non-exclusive,
         royalty-free,  worldwide license to copy, have copied,  make derivative
         works with  respect to, use,  distribute  and  sublicense  the Retained
         Software solely as part of the Products, the Products Under Development
         and logical extensions thereof.


                  (g)  In the  event  Seller  ceases  to  manufacture  or
         otherwise  supply to Buyer any integrated  circuits or other components
         used in the Products that cannot be obtained at a reasonable price from
         another source, Buyer shall automatically have a license under Seller's
         applicable  intellectual  property in order to produce such  integrated
         circuits or  components  solely for use in data and  telecommunications
         network hardware products sold by Buyer.


                  (h) The licenses granted in this section 8.4 may not be
         transferred  or  assigned  by either  party  without the consent of the
         licensor  except to a successor in  connection  with any sale of all or
         substantially  all  of  the  assets  of the  licensee  or the  relevant
         division or unit of the licensee,  or in connection  with any merger or
         business combination where the licensee is not the surviving entity.


     8.3. Chargeback Provisions.


                  (a)  Buyer agrees to promptly  forward any request by a
         third party for payment of a  Chargeback  Item to Seller for payment by
         Seller  directly  unless Buyer  believes it is in its best interests to
<PAGE>

         pay the  Chargeback  Item itself.  Seller agrees to reimburse  Buyer in
         accordance  with this  Section 8.3 for any  Chargeback  Item that Buyer
         pays up to $5,000 per item and up to an  aggregate of $50,000 per month
         for a period not to exceed six months after  Closing.  To the extent of
         any reimbursement  paid to Buyer for a Chargeback Item pursuant to this
         ss. 8.3, Buyer shall not be entitled to any recovery under ss. 9.2.
         The Chargeback Items shall mean any of the following liabilities of the
         NPB existing at Closing:  (i) market  development  fund  commitments to
         resellers,  stock rotations  commitments,  pricing errors to customers,
         warranty (including spares) on Products sold prior to the Closing Date,
         sales returns on Products,  and other similar  commitments to customers
         or resellers of the NPB; and (ii) miscellaneous  reimbursement expenses
         of Hired Employees. On no more than a monthly basis, Buyer shall submit
         to Seller an itemized written list identifying in reasonable detail any
         Chargeback Items for which Buyer seeks reimbursement by Seller.  Seller
         shall have 20 calendar  days to dispute  any item on such list.  At the
         end of such twenty day  period,  Seller  agrees to pay Buyer  within 10
         business  days for all  undisputed  Chargeback  Items set forth on such
         list.  For any  items on such list that  remain in  dispute,  Buyer and
         Seller shall attempt for five  calendar  days to mutually  resolve such
         disputes.  At the end of such five day period, either Party may appoint
         Deloitte  &  Touche,  certified  public  accountants,  to  resolve  the
         remaining  disputes  related to the  Chargeback  Items.  If  Deloitte &
         Touche is unavailable,  the Parties will select a nationally-recognized
         accounting  firm  by lot  (after  excluding  their  respective  regular
         outside  accounting firms). The determination of any accounting firm so
         selected  will be set  forth  in  writing  and will be  conclusive  and
         binding upon the Parties.  In the event the Parties submit any disputes
         to an accounting  firm for resolution as provided in this section,  the
         Buyer and the Seller will share  equally  the fees and  expenses of the
         accounting firm. Within 10 business days after the determination of any
         accounting  firm so  selected,  Seller shall pay Buyer for any disputed
         Chargeback  Items  which such  accounting  firm  determined  Seller was
         liable to Buyer.


                  (b) Buyer and Seller agree to effect the payment of the
         Bonuses to Hired Employees  pursuant to this ss. 8.3(b). One week prior
         to the  date  upon  which  each  Bonus  payment  is to be made to Hired
         Employees,  Buyer shall deliver an invoice to Seller  setting forth the
         amount of such Bonuses to be paid on such date.  Seller shall pay Buyer
         the amount of such  invoice by wire  transfer  at least two days before
         the payment date. Assuming that Buyer has received the payment due from
         Seller,  Buyer shall pay the Bonuses to the applicable  Hired Employees
         on the payment  date.  Buyer  shall not be entitled to  indemnification
         under ss. 9.2 for  amounts  received by Seller  under this ss.  8.3(b).
         Buyer shall promptly forward to Seller reasonably satisfactory evidence
         of each Bonus payment.


     8.4. Unique ASICs.
<PAGE>


                  (a)    Seller   presently    produces   certain   ASICs
         (Application Specific Integrated Circuits) at its Hudson, Massachusetts
         facility that are used solely in the Products (the "Unique ASICs").  As
         part  of  its  agreement  with  Intel  Corporation  ("Intel"),   Seller
         presently  anticipates  that it will transfer the facilities and rights
         to make the  Unique  ASICs to Intel.  Seller  will  retain the right to
         purchase the Unique ASICs from Intel.


                  (b)  Seller agrees to supply such Unique ASICs to Buyer
         pursuant to the Reseller  Agreement.  Seller agrees that neither it nor
         its  Affiliates  will sell any of the Unique  ASICs to any Person other
         than Buyer.


                  (c)  As promptly as possible  following  the closing of
         Seller's  transaction with Intel, Seller agrees to provide Buyer with a
         written  description of the procedure pursuant to which Seller can make
         an  end-of-life  final  purchase of such Unique  ASICs,  including  the
         amount of notice, if any Intel is required to provide to Seller and the
         other  parameters  concerning  the  procedure.  Seller agrees to notify
         Buyer  immediately  in the event  that  Intel  informs  Seller  that it
         intends to cease  production  of a Unique  ASIC in order that Buyer may
         make a "last buy" purchase of such Unique ASIC. In connection with such
         notice, Seller shall provide Buyer with a forecast for its purchases of
         the Product  incorporating  such Unique ASIC for the remaining  term of
         the Reseller Agreement.  In the event that Buyer purchases a sufficient
         quantity of the Unique ASIC to satisfy the forecast (in addition to the
         quantity that Buyer has  purchased for its other needs),  Seller agrees
         to  repurchase  any such Unique  ASICs  purchased  to satisfy  Seller's
         forecasted  need  that  remain  unused  at the  end of the  term of the
         Reseller Agreement at Buyer's cost.


     8.5. Open Patents.


                  (a)  With respect to the Assigned Patents identified in
         Schedule 1.3 with an "*" (the "Open Patents"),  Buyer acknowledges that
         these patents  relate to certain  emerging  network  standards and that
         Seller  has  made  certain   commitments  to  standards   organizations
         regarding the  availability  of  nonexclusive  licenses  under the Open
         Patents at reasonable royalty rates. Seller has provided Buyer with all
         written  materials  related  to  Seller's  interactions  with  standard
         organizations  regarding  the  Open  Patents.  Buyer  agrees  to  honor
         Seller's  commitments  to  the  standards  organizations  and  to  make
         licenses to the Open Patents  available in accordance with the policies
         of the relevant standards  organizations,  provided that Buyer reserves
         the right to use the Open  Patents  "defensively"  against  any  Person
         asserting that Buyer's products infringe patents held by such Person.



9. Indemnification
<PAGE>



     9.1. Survival of Representations and Warranties. All of the representations
and  warranties  of the Buyer and the  Seller  (except  for those  contained  in
ss.ss.3.3 (Authorization of Transaction) 3.6 (Title to Assets) and 3.14 (Taxes))
contained herein or in any document, certificate or other instrument required to
be delivered  hereunder  shall survive the Closing (even if the other Party knew
or had reason to know of any misrepresentation or breach of warranty at the time
of  Closing)  and  continue in full force and effect  until 15 months  after the
Closing  Date.  The  representations  and  warranties  of  Seller  contained  in
ss.ss.3.3 and 3.6 shall survive the Closing and shall continue in full force and
effect for 5 years  after the  Closing  Date and in ss.3.14  shall  survive  the
Closing and shall continue in full force and effect for the  applicable  statute
of  limitations.  The termination of any  representation  and warranty shall not
affect  any  claim  for  breaches  of  representations  or  warranties  (or  any
allegation by a third party that, if established, would constitute a breach of a
representation  or warranty) if written notice thereof is given to the breaching
party or parties prior to such  termination  date. All covenants and indemnities
of any Party in this  Agreement  or in any  document  or  certificate  delivered
hereunder shall, unless otherwise specifically provided therein,  remain in full
force and effect forever. This Section 9 is subject to Section 5.6.


     9.2. Indemnification Provisions for Benefit of the Buyer. Seller agrees to 
indemnify,  defend  and hold  harmless  Buyer and its  directors,  officers  and
Affiliates  against and in respect of all Liabilities,  obligations,  judgments,
Liens,   injunctions,   charges,  orders,  decrees,   rulings,   damages,  dues,
assessments,  Taxes, losses, fines,  penalties,  expenses,  fees, costs, amounts
paid in settlement  (including reasonable attorneys' and expert witness fees and
disbursements in connection with investigating, defending or settling any action
or threatened action),  arising out of any claim,  damages,  complaint,  demand,
cause of action, audit, investigation, hearing, action, suit or other proceeding
asserted  or  initiated   or  otherwise   existing  in  respect  of  any  matter
(collectively, the "Losses") that results from:

                  (a)  the breach of any  representation or warranty made
         by Seller herein, or resulting from any  misrepresentation or breach of
         warranty, all determined as if all materiality and knowledge provisions
         were not  contained  therein (for this  purpose  only those  qualifiers
         containing  the defined term  "Knowledge"  shall  constitute  knowledge
         qualifiers),  or  nonfulfillment of any agreement or covenant of Seller
         contained  herein or in any  agreement  or  instrument  required  to be
         entered into in connection herewith or from any misrepresentation in or
         omission from any schedule,  document,  certificate or other instrument
         required to be furnished by Seller hereunder;  provided,  however, that
         the Seller shall be liable under this ss.9.2(a) in respect of Losses if
         the  aggregate  of such Losses  exceeds  $10,000,000  in which case the
         Seller will be liable for all Losses relating back to the first dollar;
         provided, that for Losses pursuant to this ss.9.2(a), individual claims
         that are less than  $200,000  shall be excluded for all  purposes  and,
         provided,  further,  that the maximum liability of Seller for aggregate
         Losses  arising from the breach of any  representations  or  warranties
         shall not exceed $50,000,000;
<PAGE>


                  (b)   any  Liability  of  the  Seller   (including  any
         liability of the Seller  existing  prior to or  resulting  from actions
         taken or events  occurring  prior to  Closing),  other  than an Assumed
         Liability  (including  any  Liability  that  becomes a Liability of the
         Buyer under any bulk transfer law of any jurisdiction, under any common
         law doctrine of de facto merger or successor liability, or otherwise by
         operation of law).

In the event that Seller may be obliged to indemnify Buyer under both subsection
(a) and subsection (b) of this ss. 9.2, their  obligations  under subsection (b)
shall be  controlling  and the  limitations  provided  in ss.ss.  9.1 and 9.2(a)
hereof  relating to their  obligations  in respect of Losses  resulting from the
inaccuracy of any representation and warranty, or any misrepresentation,  breach
of warranty or  non-fulfillment  of an agreement or covenant as described in ss.
9.2(a), shall not apply. Buyer shall provide Seller written notice for any claim
made in respect of the indemnification  provided in this ss. 9.2, whether or not
arising out of a claim by a third party.  Notwithstanding the foregoing, Assumed
Liabilities shall in no event be considered a Loss under this ss. 9.2.



     9.3. Seller's Environmental Indemnification.


                  (a)   Notwithstanding   any  other  provision  of  this
         Agreement to the contrary  (other than ss. 5.6, ss. 9.7 and the proviso
         of ss.  9.2  relating  to a cap on total  Losses),  this ss.  9.3 shall
         control  and  limit   Seller's   obligation  to  indemnify   Buyer  for
         environmental  matters.  Seller  shall  defend,   indemnify,  and  hold
         harmless  Buyer  from and  against  any and all Losses to the extent it
         relates to the NPB or the Acquired  Assets  resulting from: (i) cleanup
         of Hazardous Materials Released,  disposed of or discharged on or prior
         to the Closing Date on or beneath the Acton  Facilities  on or prior to
         the Closing  Date;  (ii) the failure of the Seller prior to the Closing
         Date to be in compliance  with any  Environmental  Laws in effect as of
         and enforceable as of the Closing Date; (iii) the disposal,  treatment,
         storage or recycling of Hazardous Materials, on or prior to the Closing
         Date,  at  any  real  property  other  than  the  real  property  being
         transferred  to  Buyer  as part of the  Acquired  Assets;  and (iv) any
         breach of the representations  made in ss. 3.25 (claims for such breach
         to be subject to the time and monetary  limitations  of ss.ss.  9.2 and
         9.2(a)  except to the extent that such  claims are also  subject to ss.
         9.2(b).


                  (b)  Notwithstanding subsection (a) above, Seller shall
         only be required to defend,  indemnify,  and hold harmless Buyer to the
         extent that:  (i) cleanup of the  Hazardous  Materials is required by a
         Governmental  Entity or  recommended by a  Massachusetts  Licensed Site
         Professional ("LSP") as required under an applicable  Environmental Law
         that is in  effect as of and is  enforceable  as of the  Closing  Date;
         (iii) the  Remediation  Standards  that must be met in order to satisfy
         the  requirements of the applicable  Environmental  Law or Governmental
         Entity (A) are no more  stringent than the  Remediation  Standards that
         were in effect as of and were  enforceable as of the Closing Date under
         the applicable  Environmental  Law that is the source of the obligation
<PAGE>

         to conduct a cleanup, or, where no such Remediation  Standards had been
         promulgated  and were  enforceable as of the Closing Date,  Remediation
         Standards that were applied, within one year prior to the Closing Date,
         on a  case-by-case  basis,  to properties  that are most similar to the
         property  that  is  subject  to  a  cleanup  and  (B)  are  also  those
         Remediation  Standards  that  would be the  least  stringent  permanent
         solution  (provided  that this  does not  preclude  a Class C  Response
         Action Outcome pursuant to the Massachusetts  Contingency Plan, 310 CMR
         40.000,  where a permanent  solution is not  technically  feasible) set
         forth in the Remediation  Standards that would be applicable  given the
         use of the property as of the date before the Closing  Date;  (iv) such
         cleanup is for substances that were  designated as Hazardous  Materials
         and  would  have  been   subject  to   cleanup   under  an   applicable
         Environmental  Law had such  cleanup  been  initiated  on or before the
         Closing  Date;  and (v) such cleanup is  conducted  using the most cost
         effective methods for  investigation,  remediation  and/or  containment
         consistent with applicable  Environmental  Law or the Requirements of a
         Governmental  Entity.  To  the  extent  that  the  Losses  incurred  in
         connection  with a cleanup  covered by subsection  (a) are in excess of
         the Losses that would be incurred for a cleanup  meeting the conditions
         set forth in this  subsection  (b),  Seller shall have no obligation to
         indemnify Buyer for such excess Losses.


                  (c)  Notwithstanding  anything to the contrary  herein,
         Seller and Buyer  covenant to each other that the Seller  indemnity  in
         this ss. 9.3 shall be subject to the following limitations:  (i) if the
         cost of cleanup or  correcting  a  non-compliance  with law  subject to
         indemnify by Seller are  increased  after the Closing Date due to an or
         omission by a person other than Seller or Seller's agents, Seller shall
         not be responsible for any such increase in costs incurred; (ii) Seller
         shall not be responsible for any capital  improvements  and repairs and
         modifications to capital  improvements  associated with the property or
         the  facilities  of the Company made after the Closing  Date;  (iii) if
         Seller is undertaking  performance of its obligations  pursuant to this
         ss. 9.3, Seller shall not be responsible for the costs  associated with
         Buyer's  oversight  of  Seller's  performance,  including  the  cost of
         Buyer's oversight of Seller's legal counsel, consultants, or employees;
         and  (iv)  Seller  shall  not be  responsible  for any  costs  that are
         incurred by Seller in  performing it indemnity  obligations  under this
         ss.  9.3 due to any  change  related  to the  property  or the  Company
         resulting  or  arising  from  the  closure  or  sale of a  facility  or
         business,   the   construction  of  new  structures  or  equipment,   a
         modification  to existing  structures or equipment,  the  excavation or
         movement  of  soil,  or  a  change  in  use  of  the  facilities   from
         manufacturing to any other use.


                  (d)  To the extent  that Buyer makes a claim for breach
         of the  representation  set forth in ss. 3.25, or for a  non-compliance
         with applicable Environmental Law, and such matter relates to a cleanup
         of Hazardous Materials at the Acton Facilities,  the provisions of this
         ss. 9.3 shall govern the rights and obligations of the parties.
<PAGE>


                  (e)  Indemnification  shall be available under this ss.
         9.3 only with  respect to those  specific  claims  for which  Buyer has
         provided  written  notice to Seller  by the  fifth  anniversary  of the
         Closing Date. Such notice must include,  based on reasonably  available
         evidence, the following: (i) location; (ii) the extent of contamination
         and the impacted media, if known; and (iii) a copy of any notices filed
         with or received from any Governmental Entity, LSP or other Person, or,
         if no such notice has been filed or received,  the basis upon which the
         claimant seeks indemnification. Claims brought pursuant to this ss. 9.3
         shall be subject to the procedures for indemnification set forth in ss.
         9.5 if such claims are third party claims.  Buyer shall be  responsible
         for  managing  any  cleanup  of the  Acton  Facilities  or any  matters
         relating thereto,  notwithstanding Seller's indemnification obligations
         pursuant to this Section 9.3.  Buyer agrees that: (i) it shall promptly
         provide copies to Seller of all notices, correspondence, draft reports,
         final reports, intended submissions and final submissions, proposed and
         final workplans, governmental responses thereto, and other documents or
         information of similar import; (ii) it shall afford Seller a reasonable
         opportunity  to comment and consult on any such  intended  submissions,
         draft reports, proposed workplans and similar documents; (iii) it shall
         provide  Seller notice of any meetings  with the  governing  regulatory
         authority  concerning  any matter  subject to the indemnity  hereunder,
         including,  but not limited,  any meetings related to the establishment
         of  applicable  Remediation  Standards;  (iv) it shall  provide  Seller
         reasonable  notice of any  intended  field work to be  conducted at the
         Acton  Facilities,  shall  allow  Seller  and  its  agents,  employees,
         consultants, attorneys and other representatives to observe and monitor
         such field work and to obtain split  samples at Seller's  request;  and
         (v) it shall promptly provide Seller with the results of any such field
         work.  Seller shall be responsible  for its own costs and expenses with
         respect to its participation in any matters covered hereunder.



     9.4. Inbdemnification Provisions for Benefit of the Seller. Buyer hereby  
agrees to indemnify, defend and hold harmless Seller and its directors, officers
and  Affiliates  against  and  in  respect  of  all  Liabilities,   obligations,
judgments, Liens, injunctions, charges, orders, decrees, rulings, damages, dues,
assessments,  Taxes, losses, fines, penalties,  damages,  expenses, fees, costs,
amounts paid in settlement  (including  reasonable attorneys' and expert witness
fees and disbursements in connection with  investigating,  defending or settling
any action or threatened  action) arising out of any claim,  complaint,  demand,
cause of action, audit, investigation, hearing, action, suit or other proceeding
asserted  or  initiated  in  respect  of any matter  that  results  from (i) the
inaccuracy of any  representation or warranty made by Buyer herein, or resulting
from  any  misrepresentation,  breach  of  warranty,  all  determined  as if all
materiality  and  knowledge  qualifiers  were not  contained  therein  (for this
purpose,  only those qualifiers  containing the defined term  "Knowledge"  shall
constitute knowledge  qualifiers) or nonfulfillment of any agreement or covenant
of Buyer,  contained  herein or in any  agreement or  instrument  required to be
entered into in connection herewith or from any misrepresentation in or omission
from any schedule,  document,  certificate  or other  instrument  required to be
furnished by Buyer hereunder;  provided, however, that the Buyer shall be liable
<PAGE>

under  this  ss.9.4(i)  in  respect of Losses if the  aggregate  of such  Losses
exceeds  $2,500,000  in which  case the  Buyer  will be  liable  for all  Losses
relating back to the first dollar;  provided,  that  individual  claims that are
less than $200,000  shall be excluded from the  calculation  of Losses from this
ss.9.4(i),  and,  provided,  further,  that the maximum  liability  of Buyer for
aggregate Losses arising from breach of  representations or warranties shall not
exceed  $50,000,000;  and (ii) any  Liability  of the Buyer,  including  without
limitation, any Assumed Liability.

In the event that Buyer may be obliged to indemnify Seller under both subsection
(i) and subsection (ii) of this ss. 9.4, their obligations under subsection (ii)
shall be  controlling  and the  limitations  provided  in ss.ss.  9.1 and 9.4(i)
hereof  relating to their  obligations  in respect of Losses  resulting from the
inaccuracy of any representation and warranty, or any misrepresentation,  breach
of warranty or  non-fulfillment  of an agreement or covenant as described in ss.
9.4(i), shall not apply. Seller shall provide Buyer written notice for any claim
made in respect of the indemnification  provided in this ss. 9.4, whether or not
arising out of a claim by a third party.



     9.5. Matters Involving Third Parties.


                  (a)  If any third  party  shall  notify  any Party (the
         "Indemnified Party") with respect to any matter (a "Third Party Claim")
         which may give rise to a claim for  indemnification  against  any other
         Party (the "Indemnifying Party") under this ss. 9, then the Indemnified
         Party shall promptly notify each Indemnifying Party thereof in writing;
         provided,  however,  that no delay on the part of the Indemnified Party
         in notifying  any  Indemnifying  Party shall  relieve the  Indemnifying
         Party from any  obligation  hereunder  unless  (and then  solely to the
         extent) the Indemnifying Party forfeits any rights or defenses.


                  (b)  Any  Indemnifying  Party  will  have the  right to
         defend the Indemnified Party against the Third Party Claim with counsel
         of its choice reasonably  satisfactory to the Indemnified Party so long
         as (i) the Indemnifying Party notifies the Indemnified Party in writing
         within 15 days  after  the  Indemnified  Party has given  notice of the
         Third  Party  Claim  that the  Indemnifying  Party will  indemnify  the
         Indemnified  Party  from and  against  the  entirety  of any Losses the
         Indemnified  Party may suffer resulting from,  arising out of, relating
         to, in the nature of, or caused by the Third  Party Claim to the extent
         it is required  to do so,  (ii) the  Indemnifying  Party  provides  the
         Indemnified  Party with evidence  acceptable to the  Indemnified  Party
         that the Indemnifying Party will have the financial resources to defend
         against  the  Third   Party  Claim  and  fulfill  its   indemnification
         obligations  hereunder,  and (iii) the Indemnifying  Party conducts the
         defense  of the Third  Party  Claim  actively  and  diligently  and the
         representation of both parties by the same counsel is not inappropriate
         due to actual or potential  conflicts  of interest  between  them.  The
         Indemnified Party agrees to cooperate fully with the Indemnifying Party
<PAGE>

         and its counsel in the defense  against any Third Party  Claim,  and to
         the extent that any Party  assumes the defense of any Third Party Claim
         as provided  herein,  such Party  agrees to conduct the defense of such
         Claim actively and diligently.


                  (c) So long as the Indemnifying Party is conducting the
         defense of the Third Party Claim in  accordance  with ss. 9.5(b) above,
         (i) the Indemnified  Party may retain  separate  co-counsel at its sole
         cost and  expense  and  participate  in the  defense of the Third Party
         Claim,  (ii) the Indemnified Party will not consent to the entry of any
         judgment or enter into any  settlement  with respect to the Third Party
         Claim  without  the prior  written  consent of the  Indemnifying  Party
         (which  consent  shall  not   unreasonably  be  withheld),   (iii)  the
         Indemnifying  Party will not  consent to the entry of any  judgment  or
         enter into any settlement  with respect to the Third Party Claim unless
         written agreement is obtained  releasing the Indemnified Party from all
         liability thereunder,  and (iv) the Indemnifying Party will not consent
         to the entry of any judgement or enter into any settlement with respect
         to a Third Party Claim seeking an injunction or other equitable  relief
         on the  sale of a  product  of the  Indemnified  Party  that  generated
         $10,000,000 or more of revenue for the Indemnified  Party in the twelve
         months  from the  date of such  proposed  consent,  without  the  prior
         written  consent of the  Indemnified  Party  (which  consent  shall not
         unreasonably be withheld, conditioned or delayed).


                  (d)  In the event any of the  conditions  in ss. 9.5(b)
         above is or becomes unsatisfied, however, (i) the Indemnified Party may
         defend against any Third Party Claim, and will not consent to the entry
         of any judgment or enter into any settlement  with respect to the Third
         Party  Claim  without  the prior  written  consent of the  Indemnifying
         Party, which shall not be unreasonably withheld;  (ii) the Indemnifying
         Parties will reimburse the Indemnified  Party promptly and periodically
         for the costs of one counsel in defending against the Third Party Claim
         (including  attorneys' fees and expenses),  and (iii) the  Indemnifying
         Parties will remain  responsible for any Losses the  Indemnified  Party
         may suffer  resulting from,  arising out of, relating to, in the nature
         of, or caused by the Third Party Claim to the fullest  extent  provided
         in this ss. 9.



     9.6.  Exslusive  Remedy.  Except  for  remedies  of  specific  performance,
the foregoing  indemnification  provisions  shall be the exclusive remedy of the
Buyer and the Seller  with  respect  to the  transactions  contemplated  by this
Agreement;  provided,  however,  the limitation on remedies provided in this ss.
9.6 shall in no way limit either Parties remedies under the Reseller Agreement.


     9.7. Tax  Effect.  The  amount of Losses  payable  by the Seller
pursuant  to this ss. 9 as a result of a claim by the Buyer shall be (i) reduced
by the amount of any Tax benefit  actually  realized by the Buyer (for itself or
on behalf of the  Indemnified  Party)  and (ii)  increased  by the amount of any
increased  Taxes  (including  by  reason  of  reduced  amortization  deductions)
actually  incurred  by the Buyer  (for  itself  or on behalf of the  Indemnified
Party) as a result  of  Seller's  indemnification  payment  of  Losses  for such
<PAGE>

claims.  The parties  agree that to the extent  allowed by  applicable  law, the
Seller's indemnification payment of Losses shall be reported as an adjustment to
the Purchase Price.



10. Termination



     10.1. Termination of Agreement.  Certain of the Parties may terminate this 
Agreement as provided below:


                  (a)  the Parties may terminate this Agreement by mutual
         written consent at any time prior to the Closing;


                  (b)  either Party may terminate  this  Agreement if the
         Closing shall not have occurred  prior to February 28, 1998;  provided,
         however,  that this date shall be  automatically  extended to March 31,
         1998 in the  event  that the FTC or DOJ  issues a second  request  with
         respect to filing under the Hart-Scott-Rodino Act;


                  (c)  either  Party  may  terminate  this  Agreement  if
         consummation of the transactions  contemplated hereby would violate any
         nonappealable   final  order,  decree  or  judgment  of  any  court  or
         governmental body having competent jurisdiction; or


                  (d)  either Party may terminate  this  Agreement if the
         other Party shall have materially breached any representation, warranty
         or  covenant   contained  in  this  Agreement  and  such  breach  would
         reasonably be expected to have a Material  Adverse Effect,  in the case
         of  Seller,  or a material  adverse  effect on the  aggregate  benefits
         Seller would receive  hereunder as  contemplated  hereby in the case of
         Buyer and such breach shall not be amenable to cure.



     10.2. Effect of Termination.  If any Party terminates this Agreement  
pursuant to ss. 10.1 above, all rights and obligations of the Parties  hereunder
shall terminate without any Liability of any Party to any other Party except for
any Liability of any Party then in breach and except as set forth in ss. 10.3.


     10.3. Termination  Fee.  If either  Party  shall  terminate  this
Agreement for any reason whatsoever, Buyer shall pay a fee of $7,500,000 in cash
to Seller within one business day after such termination.  Such fee shall not be
subject to set-off or any other claim and is in  addition to all other  remedies
available and is payable regardless of fault.
<PAGE>



11.  Miscellaneous.



     11.1. Press Releases and Public Announcements. No Party  shall  issue  any 
press release or make any public announcement  relating to the subject matter of
this  Agreement  prior to the Closing  without  the prior  approval of the other
Party;  provided,  however,  that any Party may make any  public  disclosure  it
believes in good faith is required by  applicable  law or any listing or trading
agreement   concerning  its  publicly-traded   securities  (in  which  case  the
disclosing  Party will provide the other Party with the opportunity to review in
advance the disclosure).



     11.2. No Third Party Beneficiaries. This  Agreement  shall not confer any 
rights or remedies  upon any Person other than the Parties and their  respective
successors and permitted assigns.


     11.3. Entire Agreement. This  Agreement  (including  the  documents  
referred to  herein),  between  the  Parties  and any other  written  agreements
entered  into  between the Parties  contemporaneously  herewith  constitute  the
entire  agreement  between the Parties and supersedes any prior  understandings,
agreements,  or representations  by or between the Parties,  written or oral, to
the extent they related in any way to the subject matter hereof.


     11.4.Succession and Assignment. This  Agreement  shall be binding upon and 
inure to the benefit of the Parties named herein and their respective successors
and permitted  assigns.  No Party may assign either this Agreement or any of its
rights,  interests,  or obligations hereunder without the prior written approval
of the other Party; provided,  however, that the Buyer may (i) assign any or all
of its rights and interests  hereunder to one or more of its Affiliates and (ii)
designate one or more of its  Affiliates to perform its  obligations  hereunder;
provided that Buyer shall continue to be liable hereunder.


     11.5. Counterparts. This  Agreement  may be  executed in one or more  
counterparts,  each of  which  shall  be  deemed  an  original  but all of which
together will constitute one and the same instrument.


     11.6. Headings. The section headings  contained in this Agreement are 
inserted  for  convenience  only and shall not affect in any way the  meaning or
interpretation of this Agreement.


     11.7. Notices. All notices,  requests,  demands,  claims, and other 
communications hereunder will be in writing. Any notice, request, demand, claim,
or  other   communication   hereunder  shall  be  deemed  duly  given  (i)  upon
confirmation  of  facsimile,  (ii) one business day following the date sent when
sent by  overnight  delivery and (iii) five  business  days  following  the date
mailed when mailed by registered or certified mail return receipt  requested and
postage prepaid at the following address:
<PAGE>

         If to the Seller:

                  Chris Sullivan
                  Vice President
                  Digital Equipment Corporation
                  111 Powdermill Road
                  Maynard, Massachusetts  01754-1418

         Copy to:

                  Gail Mann
                  Vice President, Asst. General Counsel
                  111 Powdermill Road
                  Maynard, Massachusetts  01754-1418

         If to the Buyer:

                  Cabletron Systems, Inc.
                  35 Industrial Way
                  Rochester, New Hampshire  03867
                  Attention:  Donald B. Reed

         Copy to:

                  David A. Fine
                  Ropes & Gray
                  One International Place
                  Boston, Massachusetts 02110
                  Tel:   617-951-7000
                  Fax:  617-951-7050

Any Party may send any notice,  request,  demand,  claim, or other communication
hereunder  to the  intended  recipient  at the address set forth above using any
other means (including personal delivery,  expedited courier, messenger service,
telecopy,  telex,  ordinary  mail,  or  electronic  mail),  but no such  notice,
request, demand, claim, or other communication shall be deemed to have been duly
given  unless and until it actually is received by the intended  recipient.  Any
Party may change the address to which notices,  requests,  demands,  claims, and
other  communications  hereunder  are to be  delivered by giving the other Party
notice in the manner herein set forth.
<PAGE>



     11.8. Governing Law. This  Agreement  shall be governed by and  construed  
in  accordance  with the  domestic  laws of the  Commonwealth  of  Massachusetts
without  giving  effect  to any  choice or  conflict  of law  provision  or rule
(whether of the Commonwealth of Massachusetts  or any other  jurisdiction)  that
would  cause the  application  of the laws of any  jurisdiction  other  than the
Commonwealth of Massachusetts.


     11.9. Amendments and Waivers. No amendment of any provision of this 
Agreement  shall be valid  unless the same shall be in writing and signed by the
Buyer and the Seller. The consummation of the transactions  contemplated by this
Agreement  at Closing  shall not be deemed to have  resulted  in a waiver of any
breach of a  representation  or warranty  (whether or not such party knew or had
reason to know of such  misrepresentation  or breach of  warranty)  unless  such
waiver  was  expressly  set forth in a writing  signed by Buyer and  Seller.  No
waiver by any Party of any default, misrepresentation,  or breach of warranty or
covenant hereunder, whether intentional or not, shall be deemed to extend to any
prior or  subsequent  default,  misrepresentation,  or  breach  of  warranty  or
covenant  hereunder  or affect in any way any  rights  arising  by virtue of any
prior or subsequent such occurrence.


     11.10. Severability.  Any term or provision of this  Agreement that is 
invalid or unenforceable  in any situation in any jurisdiction  shall not affect
the validity or  enforceability  of the remaining terms and provisions hereof or
the validity or  enforceability  of the offending term or provision in any other
situation or in any other jurisdiction.


     11.11. Expenses.  Except as  otherwise  provided  herein,  each of the 
Buyer and the  Seller  will bear his or its own  costs and  expenses  (including
legal and  accounting  fees and  expenses)  and the Seller  will bear all of the
costs and expenses (including legal and accounting fees and expenses) of the NPB
incurred in connection  with this  Agreement and the  transactions  contemplated
hereby.


     11.12. Construction. The Parties have participated  jointly in the 
negotiation  and  drafting  of this  Agreement.  In the  event an  ambiguity  or
question of intent or interpretation  arises,  this Agreement shall be construed
as if drafted jointly by the Parties and no presumption or burden of proof shall
arise  favoring or  disfavoring  any Party by virtue of the authorship of any of
the provisions of this Agreement. Any reference to any federal, state, local, or
foreign  statute  or law  shall  be  deemed  also  to  refer  to all  rules  and
regulations promulgated thereunder,  unless the context requires otherwise.  The
word  "including"  shall  mean  including  without  limitation.  Nothing  in the
Disclosure  Schedule  shall be deemed  adequate to disclose  an  exception  to a
representation or warranty made herein unless the Disclosure Schedule identifies
the exception  with  particularity  and describes the relevant  facts in detail.
Without limiting the generality of the foregoing, the mere listing (or inclusion
of a copy) of a document or other item shall not be deemed  adequate to disclose
an  exception  to  a   representation   or  warranty  made  herein  (unless  the
representation or warranty has to do with the existence of the document or other
item  itself).  The  Parties  intend  that each  representation,  warranty,  and
<PAGE>

covenant contained herein shall have independent significance.  If any Party has
breached  any  representation,  warranty,  or covenant  contained  herein in any
respect,  the fact  that  there  exists  another  representation,  warranty,  or
covenant relating to the same subject matter  (regardless of the relative levels
of  specificity)  which the Party has not  breached  shall not  detract  from or
mitigate  the fact that the  Party is in  breach  of the  first  representation,
warranty, or covenant.


     11.13. Incorporation of Exhibits and Schedules. The Exhibits and Schedules 
identified in this Agreement are incorporated herein by reference and made a 
part hereof.



     11.14. Specific Performance. Each of the  Parties  acknowledges  and agrees
that the  other  Party  would be  damaged  irreparably  in the  event any of the
provisions of this Agreement are not performed in accordance with their specific
terms or otherwise are breached.  Accordingly,  each of the Parties  agrees that
the other Party shall be entitled to an  injunction  or  injunctions  to prevent
breaches of the  provisions of this Agreement and to enforce  specifically  this
Agreement and the terms and  provisions  hereof in any action  instituted in any
court of the United States or any state  thereof  having  jurisdiction  over the
Parties  and the  matter  in  addition  to any  other  remedy to which it may be
entitled, at law or in equity.


     11.15.  Waiver of Jury  Trial.  TO THE  EXTENT  NOT  PROHIBITED  BY
APPLICABLE LAW WHICH CANNOT BE WAIVED,  THE SELLER HEREBY WAIVES,  AND COVENANTS
THAT IT WILL NOT ASSERT  (WHETHER AS  PLAINTIFF,  DEFENDANT OR  OTHERWISE),  ANY
RIGHT TO TRIAL BY JURY IN ANY FORUM IN  RESPECT  TO ANY  ISSUE,  CLAIM,  DEMAND,
ACTION OR CAUSE OF ACTION  ARISING OUT OF OR PASSED UPON THIS  AGREEMENT  OR THE
SUBJECT  MATTER  HEREOF,  WHETHER NOW EXISTING OR HEREAFTER  ARISING AND WHETHER
SOUNDING IN TORT OR CONTRACT OR OTHERWISE.

<PAGE>


                                                       *****

         IN WITNESS WHEREOF,  the Parties hereto have executed this Agreement on
the date first above written.

                       CABLETRON SYSTEMS, INC.


                       By: /s/ Donald B. Reed

                       Name:  Donald B. Reed

                       Title: President


                       CTRON ACQUISITION, INC.

           
                       By: /s/ Donald B. Reed

                       Name:  Donald B. Reed

                       Title: President
                       


                       DIGITAL EQUIPMENT CORPORATION


                       By: /s/  Harold D. Copperman 

                       Name:  Harold D. Copperman

                       Title:  Senior Vice President and 
                               General Manager
                               Products Division



<PAGE>


EXHIBIT 2.1

                             CABLETRON SYSTEMS, INC.
                               DISCLOSURE SCHEDULE
                                      INDEX


Exhibits

         Exhibit A - Initial Statement of Assets

         Exhibit B - Form of Reseller Agreement

         Exhibit C - Assignment and Assumption Agreement

         Exhibit D - Bill of Sale

         Exhibit E - Statements of Operations

         Exhibit F - List of NPB Employees

         Exhibit G - Assignment of Patents and Patent Applications

         Exhibit H - Assignment of Trademarks, Trademark Applications and 
                     Goodwill


Schedules

         Schedule 1.1 (a)  -  Accounting Convention

         Schedule 1.1 (b)  -  Agreed-Upon Procedures

         Schedule 1.2      -  Assigned Licenses

         Schedule 1.3      -  Assigned Patents

         Schedule 1.4      -  Assigned Trademarks

         Schedule 1.5      -  Products

         Schedule 1.6      -  Retained Patents
<PAGE>

         Schedule 1.7      -  Licensing Programs

         Schedule 2.1(a)  -   Encumbrances on Acquired Assets

         Schedule 2.1(h)  -   Contracts

         Schedule 2.1(i)  -   Permits

         Schedule 2.1(x)  -   International Assets

         Schedule 4.8      -  Exceptions to Representation 4.8

         Schedule 5.10(a)  -  Disability Schedule

Disclosure Schedule of Cabletron Systems, Inc.

Disclosure Schedule of Digital Equipment Corporation

<PAGE>
8 December 1997

Mr. Donald B. Reed, President
Mr. David Kirkpatrick, Chief Financial Officer
Cabletron Systems, Inc.
36 Industrial Way
Rochester, NH 03866-5005

Dear Don and David:

This letter  agreement is being furnished to Cabletron  Systems,  Inc. and Ctron
Acquisition,  Inc. (collectively,  the "Buyer") by Digital Equipment Corporation
("Seller") to amend the Asset Purchase Agreement ("Agreement") between the Buyer
and  Seller  dated  November  24,  1997.  All terms used  herein  shall have the
meanings ascribed to them in the Agreement.

The Agreement is herby amended as follows:

     1. Section 1 of the Agreement is amended by adding the following definition
     "Adjusted Cabletron Stock Price" means the average, rounded to th nearest
     one-thousandth of a dollar ($0.001), of the midpoints of the high and low 
     sales prices of Cabletron Common Stock as reported on the New York Stock
     Exchange Composite Tape (as reported by the eastern edition of The Wall
     Street Journal or, if not reported thereby, as reported by another 
     authoritative source as mutually agreed by the Buyer and the Seller) for 
     the ten (10) consecutive trading days during the period ending on the 
     trading day immediately preceding the Closing Date.

     2. Section 2.5(a) of the Agreement is amended in its entirey to read as
     follows: Cash At the Closing, (x) $91,800,000 in cash (subject to 
     adjustment pursuant to Section 2.6) and (y) in the event of the Cabletron
     Stock Price is greater than the Adjusted Cabletron Stock Price, an 
     additional amount of cash consideration equal to the amount by which the
     difference, if any, between the aggregate value of the Cabletron Shares
     determined with reference to the Cabletron Stock Price and the value of
     the Cabletron Shares determined with refernce to the Adjusted Cabletron 
     Stock Price exceeds $7,500,000, all of such cash payable by wire transfer
     to the Seller in accordance with instructions of the Seller given to the 
     Buyer prior to the Closing.

     3. The first paragraph of Section 2.5(c)(ii) of the Agreement is amended
     in its entirety to read as follows: Second Year Product Credits. Subject
     to adjustment pursuant to Section 2.6, (x) $125,000,000 is Second Year
     Product Credits and (y) in the event the Cabletron Stock Price is greater
     than the Adjusted Cabletron Stock Price, a dollar amount of additional
     Second Year Product Credits, equal to the differnce, if any, between the
     aggregrate value of the Cabletron Shares detemined with reference to the 
     Cabletron Stock price and the value of the Cabletron Shares determined
     with reference to the Adjusted Cabletron Stock Price, up to $7,500,000.

     4. Section 2.5 of the Agreement is amended by adding thereto the following
     Section 2.5(d): At Buyer's option, in lieu of delivering to Seller at 
     Closing the Cabletron Shares, Buyer may elect to furnish Seller, so long as
     Buyer so notifies Seller at least two business days prior to Closing, with 
     additional cash consideration, payable in accordance with the provisions
     of Section 2.5(a), equal to the value of the Cabletron Shares detemined
     with reference to the Adjusted Cabletron Stock Price.

Except as expressly modified herein, the Agreement shall remain in full force
and effect in accordance with its terms.

Pleeas indicate your agreement with the terms hereof by dating and signing the
duplicate copy of this letter enclosed and returning it by facsimile, followed 
originally executed copy, to Gail S. Mann, Vice President, Assistant General
Counsel, Secretary and Clerk at Digital Equipment Corporation, 111 Powdermill
Road (MSO2-3/F13), Maynard, MA 01754. facsimile number 978-493-7310.

Sincerely,

Digital Equipment Corporation

By:   /s/ Harold D. Copperman
   Harold D. Copperman
   Senior Vice President and General Manager
   Products Division

Acknoweledged and agreed to:

Cabletron Systems, Inc.

CTRON Acquisition, Inc.

By:   /s/ Donald B. Reed
   Donald B. Reed
   President




EXHIBIT 10.1


                                    RESELLER

                                       AND

                               SERVICES AGREEMENT

                                     between

                                     SELLER

                                       and

                                     DIGITAL

                                    EQUIPMENT

                                   CORPORATION(1)









(1)  Confidential  Treatment has been  requested as to certain  portions of this
agreement. The term "Confidential Treatment" and the mark (*) is used throughout
this  agreement  in  order to  indicate  that  material  has  been  omitted  and
separatley filed with the Securities and Exchange Commission.


<PAGE>


                                          TABLE OF CONTENTS

                                                                     Page

1.   DEFINITIONS                                                      2

2.   TERM AND TERMINATION                                             7

3.   PRODUCT PURCHASING REQUIREMENTS AND PROCEDURES                   8

4.   PRICING AND PRICE CHANGES                                        13

5.   DELIVERY OF PRODUCTS                                             15

6.   QUALITY, INSPECTION, AND ACCEPTANCE                              18

7.   PAYMENT                                                          19

8.   PRODUCT SERVICES                                                 19

9.   DIGITAL PRODUCT BRANDING                                         22

10.  SELLER'S SALE RESTRICTIONS/PARTIES'
      SALES COMPENSATION                                              26

11.  DOCUMENTATION                                                    27

12.  PROPRIETARY RIGHTS AND LICENSES                                  27

13.  PRODUCT LOANS, BETA SITES, MODELING                              29

14.  TECHNICAL SUPPORT BY SELLER                                      29

15.  PERSONNEL                                                        30

16.  TRAINING                                                         32

17.  END OF LIFE                                                      33
<PAGE>

18.  ENGINEERING AND FIELD CHANGE ORDERS                              33
 
19.  SALES AND RELATIONSHIP PLANNING AND ENGAGEMENT                   34
 
20.  MARKETING                                                        35

21.  WARRANTY                                                         35

22.  STOCK ROTATION                                                   37

23.  ESCROW DEPOSIT                                                   37

24.  SUPPLY BY DIGITAL                                                38

25.  LIMITATION OF LIABILITY AND REMEDIES                             38

26.  CONFIDENTIAL INFORMATION AND AUDITS                              39

27.  COMPLIANCE WITH LAWS                                             41

28.  INDEMNIFICATION AND INSURANCE                                    41

29.  NOTICES                                                          43

30.  FORCE MAJEURE                                                    44

31.  GENERAL                                                          44

 
<PAGE>


                                   RESELLER AND SERVICES AGREEMENT


                  This Agreement ("Agreement") made and effective as of November
24, 1997 ("Effective Date") between Cabletron Systems,  Inc., having a principal
place of business at 35 Industrial Way, Rochester, New Hampshire 03867 (together
with  all  Subsidiaries  collectively  referred  to  as  "Seller")  and  DIGITAL
EQUIPMENT  CORPORATION,  having a principal  place of business at 111 Powdermill
Road, Maynard,  Massachusetts 01754 (together with all Subsidiaries collectively
referred to as "Digital").

                                        W I T N E S S E T H:

                  WHEREAS,  Seller is in the business  of,  among other  things,
providing networking  technology products to its customers and Digital is in the
business  of,  among  other  things,  providing  systems  integration,   network
management, technology deployment, and outsourcing services to its clients;

                  WHEREAS,  Seller  and  Digital  are  entering  into  an  asset
purchase agreement ("Asset Purchase  Agreement") which (i) involves the transfer
of assets associated with its networking product business;  and (ii) defines the
roles and  responsibilities  of the parties hereto, and the requirements of each
in developing, marketing, selling and supporting a set of defined products;

                  WHEREAS,  a condition of the Asset  Purchase  Agreement is the
execution of certain ancillary agreements including this Agreement;

                  WHEREAS, Seller wishes to appoint Digital as a reseller of
certain products on certain terms;

                  WHEREAS,  Seller  wishes to market and support  Digital as its
Strategic  Network  Services  Partner and  Digital  wishes to market and support
Seller as its Strategic Network Product Partner;

                  WHEREAS, Seller shall provide certain products and services to
Digital and third parties; and

                  WHEREAS,  the parties wish to describe their respective rights
and obligations herein.

                  NOW,  THEREFORE,  in  consideration  of the  foregoing and the
mutual covenants,  promises, and undertakings hereinafter set forth, Digital and
Seller hereby agree as follows:





<PAGE>

                                           1.. DEFINITIONS


                    Capitalized  terms  contained  herein but not defined  shall
have the meaning set forth in the Asset Purchase Agreement.


1.1.     "Authorized  Warranty Service  Provider" shall mean any Person to which
         either party subcontracts some or all of its service obligations.


1.2.     "Baseline  ESF  Percentage"  shall mean the  percentage of sales of NPB
         Products to Shared  Resellers during the four (4) quarters prior to the
         Closing Date which represents  sales by Digital  Enterprise Sales Force
         (as  compared to sales by NPB channel  sales  personnel  to such Shared
         Resellers), as mutually agreed between the parties prior to Closing.


1.3.    "Business Day" shall mean Monday through Friday, excluding local
         holidays.


1.4.    "Closing  Date" shall mean the closing date as defined in the Asset
         Purchase Agreement.


1.5.     "Contract  Services"  shall mean all  hardware/Software  services  that
         Digital provides to Customers that are not Warranty Services.


1.6.     "Control" and the correlative terms "Controlling,"  "Controlled By" and
         "Under Common Control With" for purposes of this  definition  means the
         possession, directly or indirectly, of the power to direct or cause the
         direction of the management and policies of a Person,  whether  through
         ownership of voting securities or by contract,  or otherwise,  but only
         during the period of such ownership or control.


1.7.     "Customers" shall mean purchasers of Products and/or Services.


1.8.     "DEC  Formative  Marks"  shall  mean the marks  set  forth on  Appendix
         2 to Schedule 9.1.1.


1.9.     "Demand  Forecast"  shall mean a written  demand  forecast  produced by
         Digital and  delivered to Seller that  specifies the amount of Products
         Digital expects to purchase over at least the succeeding twelve months,
         with dollar volumes specified on a monthly basis.


1.10.    "Digital-Branded  Products"  shall mean all NPB Products,  all products
         set forth on Schedule 9.6, and all other  Products to which the parties
         agree, to be sold under the Digital Marks.

<PAGE>

1.11.    "Digital Marks" shall mean the Digital Brand,  the DEC Formative Marks,
         and  the  Relationship  Logo  set  forth  on  Schedule  9.1.1  and  all
         Appendices  thereto, as the same may be amended by Digital from time to
         time.


1.12.    "Digital  Brand"  shall  mean the  Digital  logo  that is set  forth on
         Schedule 9.1.1, and any logo that Digital uses to replace that logo.


1.13.    "Digital  Partner"  shall  mean any  Person  selling  and/or  servicing
         Digital-Branded   Products,   including   external  Product  resellers,
         Digital's  internal  services  organization,  and  Authorized  Warranty
         Service  Providers,  in  each  case  to the  extent  that  such  person
         purchases  such Products  through  Digital or provides such services on
         behalf of Digital.


1.14.    "Digital Price Book" shall mean Digital's  published price list for (i)
         Digital-Branded  Products  and  (ii)  certain  Seller  Products  to  be
         included by mutual agreement of the parties.


1.15.    "Digital Service  Agreement" shall mean agreements  between Digital and
         Customers for Services.


1.16.    "Digital Services Division" shall mean MCS, NSIS, and OMS, or any other
         organization(s)  within Digital that perform(s) the functions performed
         by these divisions as of the Closing Date.


1.17.    "Dead on  arrival"  or "DOA"  shall  mean  that  the  product  does not
         function upon initial receipt by a Customer.


1.18.    "End of Life" or "EOL" shall have the meaning set forth in Section
         17.1.


1.19.    "Engineering  Change Order" or "ECO" shall mean a manufacturing  change
         to a  Product  necessitated  by  problems  or  defects  in form  fit or
         function or by product safety concerns.


1.20.    "Enterprise  Sales Force" shall mean all Digital field sales  personnel
         that  are not NPB  channel  sales  personnel  immediately  prior to the
         Closing Date.


1.21.    "Escrow Deposit" shall mean (i) all Software source code for Products
         on the Product Road Map or otherwise provided by Seller hereunder
         (including from time to time each upgrade, enhancement or other
         modification), together with, to the extent in existence, (A) any
         pertinent commentary or explanation that may be necessary to render
         such source code understandable and usable by a trained
         computer-programming expert, (B) such system documentation, statements
         of principles of operation and schematics as are necessary or
         useful for the effective understanding of such source code, and (C) all
         devices, programming or documentation (including compilers,
         workbenches, tools and higher-level or proprietary languages) employed
<PAGE>

         by Seller for the development, maintenance and implementation of such
         source code; (ii) all technical specifications for the Products on
         the Product Road Map or otherwise provided by Seller hereunder and all
         documentation related thereto; and (iii) manufacturing technical
         specifications and processes, and all documentation related thereto.

1.22.    "First Revenue Ship" or "FRS" shall mean the initial  shipment of a New
         Product by Seller.


1.23.    "First Volume Ship" shall mean the initial  shipment of New Products by
         Seller in volumes to satisfy  Digital's  forecasted needs, as set forth
         in the Product Road Map.


1.24.    "Field  Replacement Unit" or "FRU" shall mean a field replaceable unit,
         or those parts, options, and/or components that can be used to effect a
         fix on a Product.


1.25.    "First Year Product  Credits" means first year Product  Credits as that
         term is defined in the Asset  Purchase  Agreement  which may be used by
         Digital  to  purchase   from  Seller,   at  prices  set  forth  herein,
         Digital-Branded  Products that are ordered under this Agreement  during
         the  period  beginning  on the  Closing  Date and  ending  on the first
         anniversary  of the  Closing  Date (the  "First  Year") for  requesting
         delivery at any time until thirty days
         after the end of the First Year.


1.26.    "Full  Revenue Quota Credit" shall mean the lesser of (i) a one hundred
         percent  (100%)  sales quota credit or (ii) the best  equivalent  sales
         quota credit generally provided by Digital for other Digital products.


1.27.    "Gold Key Program" shall have the meaning set forth in Section 8.3.


1.28.    "including" shall mean including but not limited to.


1.29.    "Intellectual  Property Rights" shall mean all copyrights,  trademarks,
         servicemarks,  trade secrets,  patents and other intellectual  property
         rights wherever in the world enjoyable.


1.30.    "MDF" shall mean marketing development funds.


1.31.    "Minimum Product Volumes" shall have the meaning set forth in Section 
          3.2.


1.32.    "Multivendor Customer Services" or "MCS" shall mean Warranty Services
         and Contract Services.
<PAGE>


1.33.    "New Products"  shall mean future  Products to be included in the terms
         of this  Agreement  by the  mutual  agreement  of Digital  and  Seller,
         pursuant to the Product Road Map. New Products  shall be  classified as
         Digital-Branded Products or Seller Products.


1.34.    "NSIS" shall mean Digital's Network Systems Integration Services.


1.35.    "NPB  Products"  shall  mean the  products  that are part of  Digital's
         Network Product  Business that have achieved FRS as of the Closing Date
         and will be  transferred  by Digital to Seller under the Asset Purchase
         Agreement.


1.36.    "OEM" shall mean original equipment manufacturer.


1.37.    "OMS" shall mean Operations Management Services


1.38.    "One Tier Reseller" means a reseller that buys Product  directly from a
         manufacturer for resale directly to an end user.


1.39.    "Person" for these purposes means any  individual,  partnership,  firm,
         association,  trust, estate, corporation or any other legal or business
         entity.


1.40.    "Product   Information"   shall  mean  descriptions  of  documentation,
         technical  tips,  Software  support  tools,   publications,   technical
         newsletters,  training materials and all other information in any media
         which  Digital  may  reasonably  require in order to sell,  support and
         maintain the Products and/or deliver Services to Customers.


1.41.    "Product Road Map" shall mean the standards,  specifications  and other
         terms regarding the Products set forth on Schedule 3.1, as amended from
         time to time  pursuant to the  procedures  expressly  set forth in this
         Agreement.


1.42     "Product  Credits" shall mean Product Credits to be used by Digital for
         the purchase of Digital-Branded  Products,  as further set forth in the
         Asset Purchase Agreement.


1.43.    "Products"  shall mean,  collectively,  NPB  Products,  Digital-Branded
         Products,  Seller Products,  and all Spare Parts and Field  Replacement
         Units related to the foregoing.


1.44.    "Relationship Logo" shall mean the Digital logo set forth on Appendix 1
         to Schedule  9.1.1,  encircled by a  relationship  designation,  as set
         forth in Appendix 7 to Schedule 9.1.1.


1.45.    "Required Lead Time" shall mean the Seller's published lead times.


1.46     "Resale  Products" shall mean Products  purchased by Digital for resale
         or redistribution to third parties.
<PAGE>

1.47     "RFP" shall mean a Request for Proposal.


1.48.    "Rotate"  shall  mean to return a  Product  to Seller  for  either  (i)
         replacement of a more current  revision  level of the same Product;  or
         (ii) replacement with a different Product.


1.49.    "SCI" shall mean SCI Technology, Inc.


1.50.    "Second Year Product Credits" means second year Product Credits as that
         term is defined in the Asset  Purchase  Agreement  which may be used by
         Seller to purchase from Buyer,  at prices set forth in this  Agreement,
         Digital-Branded  Products that are ordered during the period  beginning
         on the first  anniversary  of the Closing Date and ending on the second
         anniversary of the Closing Date (the "Second Year") requesting delivery
         at any time until thirty days after the Second Year.


1.51.   "Seller Marks" shall mean the trademarks,  service marks,  logos and
        designs of Seller.


1.52.    "Seller Products" shall mean all  non-Digital-Branded  Products offered
         by Seller under the Seller Marks.


1.53.    "Seller Selling Partner" shall mean any Person selling  Digital-Branded
         Products,  at any level, under a contract with, or authorization  from,
         Seller.


1.54.    "Seller Tradename" shall have the meaning set forth in Section 9.9.


1.55.    "Services"  shall mean all services and support  provided by Digital or
         Digital Partners to its Customers.


1.56 "Shared Resellers" shall mean those resellers listed on Schedule 1.56.


1.57.    "Software" shall mean all computer program, databases and firmware, (i)
         embedded  in the  Products  or (ii)  sold  on a  stand-alone  basis  as
         Products,  and all  user  documentation  and  technical  specifications
         associated therewith.


1.58.    "Spare Parts" shall mean all new or like-new spares or spare parts used
         to effect a fix on a Product.


1.59.    "Subsidiary"  as used with  reference  to any  Person  means any Person
         controlling, controlled by, or under common Control with such Person.


1.60.    "Term" shall have the meaning set forth in Section 2.1.


1.61.    "Two Tier Reseller" means a reseller that buys Product  directly from a
         manufacturer for resale directly to a reseller, who in turn will resell
         directly to an end user.
<PAGE>

1.62.    "Unique  Materials"  shall mean all materials or components  ordered by
         Seller for use in Digital-Branded Products, and for which Seller has no
         alternate use.


1.63.    "Warranty"  shall  mean  a  standard  Product  warranty  provided  to a
         Customer in accordance with the specifications for such Product.


1.64     "Warranty  Services"  shall mean those services  provided by Digital or
         Digital Partners to a Customer in connection with a Warranty.


1.65.    "Year 2000 Compliant" shall mean that all computer hardware,  software,
         and microcode has user interfaces,  date data fields, processing logic,
         and output that  correctly  recognize,  process,  reflect and otherwise
         support  date  data for all  dates,  including  dates  occurring  after
         December 31, 1999.





                                     2.. TERM AND TERMINATION

2.1.     This  Agreement  shall  extend for an  initial  term  beginning  on the
         Closing  Date and ending on June 30,  2001,  unless  terminated  sooner
         pursuant to judicial or similar order (the "Term").


2.2.     Upon  termination  of this  Agreement,  (A)  subject to  Section  17.1,
         Seller's obligation to manufacture Product necessary for Digital to (i)
         purchase Spare Parts; (ii) meet any outstanding contractual obligations
         to its  Customers,  including  with  respect to Warranty  Services  and
         Contract  Services,  and/or  (iii) to  conclude  any Digital or Digital
         Partners' sales opportunities, shall survive termination for six months
         and (B) Digital  will  continue to receive  the  technical  support and
         related services set forth in Section 14.


2.3.     In addition to those  Sections  that  survive  termination  pursuant to
         Section  2.2,  the  following  Sections  of this  Agreement  shall also
         survive  termination:  Definitions,  Section 10.6, Technical Support by
         Seller, Section 17.1, Limitation of Liability;  Audits and Confidential
         Information; Compliance With Laws; Indemnification and Insurance;
         General and all related schedules.


2.4.     Upon termination of the Agreement, other than pursuant to judicial or
         similar order because of breach of this Agreement by Seller, if Seller
         has finished inventory of Digital-Branded Products, Seller shall offer
         Digital a right of first offer which offer shall remain open for thirty
         (30) days to purchase all such Digital-Branded Products at the prices
         Digital was paying immediately prior to termination.  In the event
         Digital does not exercise this right, Seller may sell-off such Products
         for an additional sixty (60) days after Digital notifies Seller it will
         not exercise this right.  At the conclusion of such sixty (60) day
<PAGE>

         period, Seller must either remove the Digital Marks from all such
         Products or destroy such Products and provide Digital with written
         certification of such removal or destruction.  The license to Digital
         Marks granted hereunder shall survive for such sell-off period solely
         to the extent necessary for Seller to exercise its rights under this
         Section 2.4.





                         3.. PRODUCT PURCHASING REQUIREMENTS AND PROCEDURES



3.1.     Attached  hereto as Schedule  3.1 is the Product Road Map for the first
         twelve (12) months of this Agreement.  Schedule 3.1 also sets forth (i)
         the procedures  for creating a new Product Road Map quarterly,  or more
         frequently,   if  agreed  between  the  parties,  and  (ii)  escalation
         procedures in the event of a disagreement between the parties.


         3.1.1.     Seller is contractually committed to comply with the Product
                    Road Map [*]  covered by the then current  Product Road Map,
                    subject to changes  approved by both parties.


         3.1.2.     If Seller notifies Digital through the Product Road Map
                    process that it proposes to cease  production of any Product
                    that  has  achieved  First  Volume  Ship,  and  Digital  has
                    delivered or delivers to Seller  within one month of receipt
                    of such notice a Demand Forecast that contains a forecast of
                    sales by  Digital  for such  Product  in excess of ten ($10)
                    million  for the twelve (12)  months  following  such notice
                    (and the forecast amount is reasonably consistent with prior
                    Demand Forecasts given then current marketplace conditions),
                    then  Seller  shall  produce  at least the  Demand  Forecast
                    amount of such Product and Digital shall be bound, under the
                    terms of this Agreement, to purchase such amount.


         3.1.3.     If Digital has proposed adding a New Product to the Product
                    Road Map for introduction at least nine months following the
                    date of such proposal and: (i) production by Seller of the 
                    Product is technologically feasible; and (ii) Digital has 
                    presented Seller with a forecast that shows sales of such 
                    New Product comprising thirty-five ($35) million or more of 
                    Digital's total forecast sales for the twelve (12) months 
                    following the proposed introduction of such New Product, 
                    then, at Seller's option:  (x) Seller may agree to make
                    the New Product and Digital shall have a contractual
                    commitment to purchase at least the amount forecast at 
                    agreed upon OEM pricing, or (y) if Seller declines
                    to produce the New Product, Digital's corresponding Minimum 
                    Product Volumes shall be reduced by fifty cents ($.50) for 
                    each forecast dollar.  If the parties disagree on whether 
                    the introduction of a New Product is technologically 
                    feasible, such disagreement shall be submitted for 
                    escalation treatment as set forth in the Product Road Map. 
                    A proposal under this provision must identify the form, fit,

*Confidential Treatment
<PAGE>

                    functionality and performance of the New Product with 
                    sufficient specificity to allow Seller to assess the 
                    technological feasibility and manufacturability of the New 
                    Product.  OEM pricing means, except as otherwise agreed, an 
                    industry standard OEM discount accounting for relevant 
                    volumes purchased.


3.2.     Subject to Seller's  compliance with its contractual  obligations under
         this Agreement  respecting  the then current  Product Road Map, and the
         terms and conditions of this Agreement  including  Section 3.4, Digital
         shall  purchase the  following  minimum  volumes of Products  ("Minimum
         Product Volumes") during the following Term years:
<TABLE>
<CAPTION>
<S>                                      <C>                                   <C> 

- ---------------------------------------- ------------------------------------- -------------------------------------
         YEAR                                     PURCHASES                    PURCHASES FOR
                                                  FOR RESALE                   SPARE PARTS AND
                                                                               AND INTERNAL USE
- ---------------------------------------- ------------------------------------- -------------------------------------
Digital Fiscal Year 98                            [*]                                [*]
- ---------------------------------------- ------------------------------------- -------------------------------------
Digital Fiscal Year 99                            [*]                                [*]
- ---------------------------------------- ------------------------------------- -------------------------------------
Digital Fiscal Year 00                            [*]                                [*]
- ---------------------------------------- ------------------------------------- -------------------------------------
Digital Fiscal Year 01                            [*]                                [*]
- ---------------------------------------- ------------------------------------- -------------------------------------
</TABLE>


         3.2.1.     For purposes of calculating the Minimum Product Volumes, 
                    Digital Fiscal Year 98 shall commence on January 1, 1998 and
                    end on June 30, 1998.  Digital Fiscal Year 99 shall commence
                    on July 1, 1998, and terminate on June 30, 1999. Digital 
                    Fiscal Year 00 shall commence on July 1, 1999 and terminate 
                    on June 30, 2000.  Digital Fiscal Year 01 shall commence on 
                    July 1, 2000 and terminate on June 30, 2001.  
                    Notwithstanding the foregoing, if Digital Fiscal Year 98 is
                    decreased by one or two months, then Digital's Minimum 
                    Product Volume for Fiscal Year 98 shall be decreased and 
                    Digital's Minimum Product Volume for Fiscal Year 01 shall be
                    increased by [*] for decreases of one month, and 
                    [*] for decreases of two months.  If Digital's 
                    Fiscal year 98 is decreased by more than two months, the 
                    parties shall meet to determine the allocation of Digital's 
                    Minimum Product Volumes.


         3.2.2.     The  volume  of  dollar   purchases  by  Digital   shall  be
                    determined  based on the purchase  price after any discounts
                    are applied.  Purchases  for Spare Parts and internal use in
                    excess of the  amounts  set  forth  above  shall be  applied
                    against  the Minimum  Product  Volume  purchases  for resale
                    requirements.


         3.2.3.     Purchases  by Digital  from Seller of Products and any other
                    products  and/or  services  shall  be  applied  towards  the
                    Minimum Product Volumes.

*Confidential Treatment


<PAGE>



3.3.     As set forth in, and subject to, the Asset Purchase Agreement,  Digital
         has First  Year  Product  Credits  in an amount  set forth in the Asset
         Purchase Agreement, and Second Year Product Credits of $125 million.


         3.3.1      Digital  may apply its  Product  Credits to  Digital-Branded
                    Product purchases in its sole discretion, provided that:

                    (i) in the  event  that  Digital  fails to meet its  Minimum
                    Product Volume commitment in Fiscal Year 98: (x) Second Year
                    Product  Credits  shall be reduced by sixty percent (60%) of
                    the amount of the Fiscal Year 98 shortfall;  (y) Digital may
                    not apply any First Year  Product  Credits in Fiscal Year 99
                    until a  volume  of  Digital-Branded  Products  equal to the
                    Fiscal Year 98 shortfall is purchased  other than in Product
                    Credits,  at those  prices  set forth in  Section 4; and (z)
                    Digital  may not apply any Second  Year  Product  Credits to
                    purchases   in   Fiscal   Year   99   until  a   volume   of
                    Digital-Branded Products equal to sixty percent (60%) of the
                    Fiscal  Year 98  shortfall  is  purchased  in  Year  Two (as
                    defined  in the  Asset  Purchase  Agreement)  other  than in
                    Product Credits, at those prices set forth in Section 4; and

                    (ii) in the event  that  Digital  fails to meet its  Minimum
                    Product  Volume  commitment  in  Fiscal  Year  99:  (x)  any
                    remaining  Second Year Product  Credits  shall be reduced by
                    sixty  percent  (60%) of the  amount of the  Fiscal  Year 99
                    shortfall;  and (y)  Digital  may not  apply  any  remaining
                    Second Year  Product  Credits to purchases in Fiscal Year 00
                    until a  volume  of  Digital-Branded  Products  equal to the
                    shortfall is  purchased  other than in Product  Credits,  at
                    those prices set forth in Section 4.


         3.3.2.     In the event that Minimum  Product Volumes for the aggregate
                    of Fiscal Year 98 and Fiscal Year 99 (pro-rated to a six (6)
                    month  period)  are  reduced to a level  below the amount of
                    First Year Product  Credits  pursuant to Section  3.4,  then
                    Digital  shall  receive  a  dollar-for-dollar  carryover  of
                    unused  First Year  Product  Credits to Second Year  Product
                    Credits.


3.4.4 The Minimum Product Volumes will be subject to the following:


         3.4.1.     Other than for delays caused directly by Digital,  or by SCI
                    for one hundred and twenty (120) days  following the Closing
                    Date, if Digital issues a valid Purchase Order for a Product
                    on the Product Road Map that is accepted by Seller and [ * ]
                    after  the  scheduled   delivery  date,  the  parties  shall
                    escalate the problem to the parties' respective Relationship
                    Managers, or their respective designee,  who will either (i)
                    create a  recovery  plan  for  expeditious  shipment  of the
                    Product;  or (ii)  agree  on an  alternative  Product  to be
                    offered by Seller,  provided that the final determination as
                    to whether

*Confidential Treatment


<PAGE>
Digital shall accept such alternative Product shall be in the sole discretion of
Digital.  In the event that Seller fails to provide an adequate  shipment remedy
or a substitute that is acceptable to Digital [ * ].


3.5.     Digital shall authorize purchase of Products by issuing written (which 
         includes electronic data interchange and facsimile) or telephonic 
         orders on its then current purchase order form and any documents 
         incorporated therein by reference ("Purchase Order").  The terms of
         this Agreement shall supersede the pre-printed terms and conditions of
         any Purchase Order.  All terms and conditions not specifically set 
         forth in this Agreement but appearing on the face of the Purchase Order
         shall apply to such transactions as if set forth in this Agreement.  
         In the event of a conflict between this Agreement and any term or 
         condition in any Purchase Order, this Agreement shall govern.  No terms
         appearing on the face of a Purchase Order, other than with respect to 
         time of delivery, mode of transportation, special discounts, and 
         similar commercial terms acknowledged in writing by the Seller, shall 
         be deemed to amend, modify or limit the application of any express term
         of this Agreement.  Digital shall use its reasonable commercial efforts
         to send confirming written Purchase Orders within two (2) weeks after 
         issuing any telephonic Purchase Orders.


3.6.     Seller may not unreasonably  reject a Purchase Order that is consistent
         with the terms of this Agreement. Seller shall promptly acknowledge all
         Purchase  Orders,  but in no event may Seller  reject a Purchase  Order
         later than seven (7) days after receipt of a Purchase Order. Acceptance
         by Seller is limited to Digital's  offer as contained in this Agreement
         and the Purchase Order. Unless otherwise agreed between the parties, no
         additional  or  different  provisions  proposed  by either  party shall
         apply.  In  addition,  the parties  agree that this  Agreement  and any
         issued Purchase Orders  constitute a Contract for the Sale of Goods and
         satisfy all statutory and legal formalities of a contract.


3.7.     Commencing twelve (12) months after the Effective Date, Seller shall be
         required to meet the Required Lead Time with respect to [ * ]









*Confidential Treatment
<PAGE>

[ * ] during each quarter throughout the term of this Agreement.


         3.7.1      In the  event  that  Seller  fails  to  meet  the  foregoing
                    requirement,  and does not meet that requirement  during the
                    following quarter, [ * ].


3.8.     Commencing  twelve (12) months after the Effective  Date,  Seller shall
         use all  reasonable  efforts  to  deliver  Products  by the  originally
         scheduled ship date specified by Seller with respect to [ * ].


         3.8.1.     In the event that  Seller  fails to deliver  Products by the
                    originally  scheduled  ship date  specified  by Seller  with
                    respect to [ * ].


3.9.     The  provisions of Sections 3.7 and 3.8 shall not apply to (i) Products
         on  allocation,  and (ii) New  Products  for the first ninety (90) days
         after introduction.


3.10.    Promptly  after the first  anniversary of the Closing Date, the parties
         shall calculate the percentage of sales of Digital-Branded  Products by
         Digital (as compared to Seller) to Shared  Resellers  (based on invoice
         net of return totals) during the first year after the Closing Date (the
         "Future ESF  Percentage").  The parties shall adjust Digital's  Minimum
         Product  Volume  purchase  commitments  for  Fiscal  Year  '99  by  the
         following formula:

                    (Baseline  ESF  Percentage   minus  Future  ESF  Percentage)
                    multiplied  by (the  combined  sales by  Digital  Enterprise
                    Sales Force and Seller of Digital-Branded Products to Shared
                    Resellers  in  Fiscal  Year 99),  provided  that in no event
                    shall the adjustment to Digital's  Minimum  Product  Volumes
                    (up or down) pursuant to Section 3.10 exceed $7.5 million.


*Confidential Treatment

<PAGE>
                         4.. PRICING AND PRICE CHANGES



4.1.     The price to Digital of all NPB Products that are Resale Products shall
         be the  lesser of (i)  Digital's  List  Price  less  Digital's  current
         discounts; and (ii) Seller's best comparable reseller channel pricing.


4.2.     The price for all  Resale  Products  other than NPB  Products  shall be
         Seller's  Platinum  Plus  pricing  (which is  currently  Seller's  best
         comparable  reseller  channel  pricing  program).  If the Platinum Plus
         program is changed,  eliminated  or  superseded,  Digital  will receive
         Seller's best comparable reseller channel pricing program.


4.3.     The price of Products  used for  demonstrations  and as lab  equipment,
         Products purchased for internal use and not for Spare Parts by Digital,
         and Customer loan equipment [ * ]. Unless  otherwise agreed between the
         parties, no MDF or incentive programs shall apply to such purchases.


4.4.     The price of Spare Parts used for the provision of Contract Services of
         NPB Products  shall be [ * ] from the pricing set forth in Sections 4.1
         and 4.2.  Refurbished  Spare Parts may be  substituted  when Digital is
         providing  maintenance service but not in connection with any warranty.
         Unless  otherwise  agreed  between  the  parties,  no MDF or  incentive
         programs shall apply to such  purchases.  The price for repair services
         for NPB Product  Spare  Parts  provided in  connection  with  Digital's
         provision of Contract Services of NPB Products shall be [ * ].


4.5.     In the event that Digital  purchases  Products in excess of the Minimum
         Product Volumes in any given Fiscal Year, it shall be [ * ].


4.6.     Seller shall provide  Digital  written notice of any change in Seller's
         pricing  that applies to Digital [ * ]. If Seller fails to give Digital
         such prior notice:










*Confidential Treatment

<PAGE>

         4.6.1.     [ * ]


         4.6.2.     [ * ]


4.7.     Seller's  prices shall include all charges such as packaging,  packing,
         customs duties  imposed  before passage of title,  and all taxes except
         sales,  use and other such taxes  imposed  upon the sale or transfer of
         Product for which Digital is solely  responsible  under  applicable law
         and for which  Digital is properly  invoiced  by Seller.  If Product or
         Spare Parts is supplied  without  normal  packaging or packing,  Seller
         will pass on to  Digital  its  resultant  cost  savings  in  connection
         therewith.


4.8.     Notwithstanding  anything else in this Agreement,  Seller shall provide
         reasonable  consideration,  on an  opportunity  basis,  to any  special
         pricing and/or discount terms and conditions  which may be requested by
         Digital for a specific  contract  opportunity.  Such requests  shall be
         made by Digital to the local Seller sales and/or  channels  manager for
         review.  Seller shall respond to Digital's  request within  forty-eight
         (48) hours from the date of the request,  unless otherwise agreed to by
         the parties.


4.9.     Digital shall accrue [ * ] in applicable  categories  per quarter which
         can be utilized for a variety of Seller  product  related  business and
         marketing  activities,  as specified  and  approved by Seller,  such as
         training,  advertising,  trade shows, presentation materials, seminars,
         special events and promotional materials. MDF funds may not be used for
         travel  or  lodging  costs,  provided  that  the  use of MDF  Funds  in
         connection with training need not be approved by Seller.


4.10.    Unless  approved by Seller,  MDF funds:  (i) may not be applied against
         future  Product  purchases;  and  (ii) may not be used to  satisfy  any
         outstanding balance owed to Seller.


4.11.    Digital  shall submit  invoices and proof of items  purchased to Seller
         prior to the disbursement of MDF. Seller shall reimburse Digital within
         sixty (60) days from date of Seller approval of the invoice,  or in the
         case of Seller charges, deduct directly from the MDF account.


4.12.    With the prior approval of Seller, MDF may be utilized in advance based
         on projected purchase levels in subsequent quarters.


4.13.    In the event this Agreement terminates, other than pursuant to judicial
         or similar order because of breach of the Agreement by Seller, only MDF
         requests   submitted  and  approved  prior  to  termination   shall  be
         reconciled. MDF requests submitted subsequent to

*Confidential Treatment

<PAGE>
 such termination will not be accepted, and all remaining MDF will be forfeited.
All advanced MDF owed to Seller are payable at final settlement.


                           5.. DELIVERY OF PRODUCTS



5.1.     All Products shall be deemed to have been purchased on their originally
         scheduled  ship  date  (i)  for  purposes  of the  application  of such
         purchases  towards the  satisfaction of the Minimum Product Volumes and
         application  of the  Product  Credits  and (ii) to  determine  Seller's
         compliance with Sections 3.6 and 3.7.


5.2.     Digital  Purchase Orders upon acceptance by Seller shall state Seller's
         committed  delivery dates for each Product.  The minimum period between
         Digital's  issuance of a Purchase Order and the committed delivery date
         shall be the Required Leadtime. At the request of Digital, Seller shall
         use reasonable efforts to expedite a shipping date.


5.3.     Except as otherwise provided in this Agreement, all deliveries shall be
         FOB   Origin.   Digital   shall   select  the  carrier  and  shall  pay
         transportation  charges  on a  "freight  collect"  basis.  Digital  may
         require  that  Products  be shipped  by Seller to various  destinations
         including  directly  to a Customer.  The  Purchase  Order will  clearly
         specify the "Ship To" location for each order placed with Seller.


5.4.     If Seller has more than one  geographic  location  which  could  supply
         Resale  Product,  Seller  shall  use  reasonable  efforts  to make such
         Product   available  to  Digital  from  Seller's  closest  location  to
         Digital's "Ship To" location.


5.5.     If Seller delivers a Product more than [*] of the schedule delivery 
         date, Digital may (i) return such Product, at Seller's expense, for 
         subsequent delivery on the scheduled delivery date (provided, that
         in the case of Products shipped outstide the United States, this
         clause shall apply only for Products delivered [*] of the scheduled
         delivery date); or (ii) retain such Product and postpone payment until
         it would have been due if Seller had delivered such Product on 
         schedule.  Without limiting any of Digital's rights and remedies in
         equity or at law, if Seller has failed to deliver any Product by the 
         scheduled delivery date, such Product shall be considered "late" and
         Digital may require that Seller ship that Product via premium means
         (e.g., guaranteed overnight delivery) at Seller's expense, or may 
         cancel the order for such Product, without cost or liability to 
         Digital.


5.6.     In the event of a Product or a Product component shortage, Seller shall
         fill  orders  placed by Digital to satisfy  Digital  end user  Customer
         requirements on a pro rata basis with other


*Confidential Treatment
<PAGE>
purchasers  (based upon the average  purchased  volumes subject to such shortage
for the prior three months).


5.7.     Seller shall deliver the exact quantity of Product scheduled for 
         delivery pursuant to Purchase Orders.  If Seller delivers less than the
         scheduled volume, Seller shall correct the shortage within two (2)
         Business Days.  If Seller fails to corrct such shortage within this
         period, without limiting any of Digital's rights and remedies under
         this Agreement.  Digital may cancel the pertinent portion of the 
         Purchase Order without cost or liability.


5.8.     If Digital's  Purchase Order  specifies  export after passage of title,
         Seller  shall  furnish   Digital  with  all   necessary   export/import
         documentation at Seller's expense. Export/import documentation shall be
         in accordance with the INCOTERMS then in force.


5.9.     Digital may cancel and/or  reschedule  delivery of individual  Purchase
         Orders, or portions thereof, in accordance with the Schedules described
         below. Oral directions to reschedule  deliveries shall be permitted and
         shall be confirmed in writing by Digital within two (2) weeks following
         such oral  directions.  Digital shall be assessed a cancellation fee as
         follows:

The following  cancellation  terms shall apply to (i) all NPB Products  together
with upgrades and revisions  thereto which conform to such Products in form, fit
and  function,  and (2) all  Products on the Product Road Map that are unique to
Digital's  requirements  in form, fit and function,  and have no  Seller-branded
equivalent:

- ---------------------------------------- ---------------------------------------
DAYS BEFORE                              RESULT OF
SCHEDULED DELIVERY                       CANCELLATION
- ---------------------------------------- ---------------------------------------
[ * ]                                    [ * ]
- ---------------------------------------- ---------------------------------------
[ * ]                                    [ * ]
- ---------------------------------------- ---------------------------------------
[ * ]                                    [ * ]
- ---------------------------------------- ---------------------------------------
[ * ]                                    [ * ]
- ---------------------------------------- ---------------------------------------













*Confidential Treatment

<PAGE>


Seller shall provide reasonable  consideration,  on an opportunity basis, to any
special  cancellation  terms which may be requested by Digital Services Division
for specific contract  opportunities.  Such requests shall be made by Digital to
Seller's local sales and/or channels manager for review. Seller shall respond to
Digital's request within 48 hours from the date of the request, unless otherwise
agreed to by the parties.

The following cancellation terms shall apply to all other Products:

- ---------------------------------------- ---------------------------------------
DAYS BEFORE                              RESULT OF
SCHEDULED DELIVERY                       CANCELLATION
- ---------------------------------------- ---------------------------------------
[ * ]                                    [ * ]
- ---------------------------------------- ---------------------------------------
[ * ]                                    [ * ]
- ---------------------------------------- ---------------------------------------
[ * ]                                    [ * ]
- ---------------------------------------- ---------------------------------------


5.10.    Digital  may  reschedule  any  Purchase  Order(s),  or  portions of any
         Purchase Order(s) pursuant to the following guidelines:
<TABLE>
<CAPTION>
<S>                            <C>                          <C>   

- ------------------------------ ---------------------------- --------------------------- ----------------------------
  Days in advance of Seller     Amount of order that can         Number of times              Number of days
  committed delivery date:           be rescheduled:               order can be              that order can be
                                                                   rescheduled:              rescheduled for:
- ------------------------------ ---------------------------- --------------------------- ----------------------------
            [ * ]                         [ * ]                       [ * ]                        [ * ]
- ------------------------------ ---------------------------- --------------------------- ----------------------------
            [ * ]                         [ * ]                       [ * ]                        [ * ]
- ------------------------------ ---------------------------- --------------------------- ----------------------------
            [ * ]                         [ * ]                       [ * ]                        [ * ]
- ------------------------------ ---------------------------- --------------------------- ----------------------------
            [ * ]                         [ * ]                       [ * ]                        [ * ]
- ------------------------------ ---------------------------- --------------------------- ----------------------------
            [ * ]                         [ * ]                       [ * ]                        [ * ]
- ------------------------------ ---------------------------- --------------------------- ----------------------------
</TABLE>


5.11     Digital shall provide rolling twelve (12) month Demand Forecasts of its
         intended  purchases  from  Seller for  Resale  Products.  Seller  shall
         provide quarterly forecasts of its Product availability to Digital, and
         shall  cooperate with Digital in dealing with any forecasted  shortfall
         on a timely basis. The parties  acknowledge that all forecasts shall be
         non-binding,  provided  that the  forecast  for the  [*] immediately  
         following  the date of  submission of the forecast for NPB Products 
         shall constitute a binding commitment  ("Binding Forecast") by
         Digital to purchase the  forecasted  amounts,  subject to Sections 5.10
         and 5.11.


*Confidential Treatment

<PAGE>
         5.11.1     Digital's  Binding  Forecast  shall  be  binding  both  with
                    respect to the total dollar volume and Product mix contained
                    in such Binding  Forecast,  provided that Digital may change
                    the Product mix with respect to twenty five percent (25%) of
                    the total dollar value of the Binding Forecast.


         5.11.2     In the  event  that  Seller  accepts  a  Purchase  Order for
                    Products that are included in the Binding Forecast and fails
                    to deliver such Product(s)  within thirty (30) days from the
                    scheduled  delivery date, Digital shall be released from the
                    Binding  Forecast  for the  forecasted  value of the late or
                    non-delivered  Product, and Digital shall have no obligation
                    to replace such Products with other Products.


5.12.    Digital's  Demand  Forecast  is  expected  to be at  least  eighty-five
         percent (85%) of its Minimum  Product  Volume  commitment  for the same
         corresponding  period.  In the event that Digital's  Demand Forecast is
         ever less than  eighty-five  percent  (85%),  the  parties  shall  meet
         promptly to establish a remedial plan.


5.13.    A copy of Seller's  packing list shall accompany all Product  shipments
         and shall indicate  Digital's  Purchase Order Number,  Part Number, and
         Serial Number.





                    6.. QUALITY, INSPECTION, AND ACCEPTANCE



6.1.     Prior to delivery, Seller shall insure that all Products conform to the
         guidelines set forth on Schedule 6.1.


6.2.     Digital may perform source  inspection and quality assurance reviews in
         accordance with the Quality Assurance  Guidelines contained in Schedule
         6.1,  but this  shall in no way  relieve  Seller of its  obligation  to
         deliver conforming Product, nor does said right of inspection waive (i)
         any of Seller's  obligations  hereunder;  (ii) the rights of Digital to
         inspect the  Products  upon  delivery;  or (iii) the  specific  Product
         Warranty provisions. Seller shall assist Digital, at Digital's request,
         in performing such inspection and reviews.


6.3.     Seller shall have fourteen (14) days from the date of  notification  by
         Digital of a deviation  from the Quality  Assurance  Guidelines to cure
         such  deviation.  In the  event  such  deviation  is not  cured  within
         fourteen (14) days, Digital, at its option, may:


         6.3.1  require that Seller cease all further  sales and shipment of the
                non-conforming Products until such non-conformance is cured; or
<PAGE>

         6.3.2  immediately  terminate  Seller's  right to  continue  to use the
                Digital Marks on said Products.


6.4.     All Products  repaired by Seller  pursuant to the Warranty  Services or
         otherwise  at the request of  Digital,  shall be subject to the Product
         standards,  including the Quality  Assurance  Guidelines and acceptance
         standards, set forth in Schedule 6.1 and in the Product Road Map.





                                  7.. PAYMENT



7.1.     Digital shall issue payment to Seller for conforming Products that have
         been received  thirty (30) calendar days after the date of receipt of a
         valid  invoice.  Digital  shall be offered all early  payment  programs
         offered by Seller.


7.2.     Digital may apply Product Credits to invoiced  payments as set forth in
         Section 3.


7.3.     Amounts owed to Digital due to rejections of Products, or discrepancies
         on paid invoices will be, at Digital's  option,  fully credited against
         current or future invoices  payable by Digital.  Such netting should be
         fully reconciled with the Seller on a monthly basis.


7.4.     Seller  shall pay Digital [ * ]. The  foregoing  takes into account the
         fact that Digital  will  provide as part of the  Warranty  Services (i)
         call handling, (ii) purchasing, stocking and storage of Spare Parts and
         replacement  whole units, and (iii) logistics and revision  management,
         and will not be providing repair services.


7.5.     Digital  shall invoice  Seller for its  provision of Warranty  Services
         every thirty (30) days. All invoiced payments shall be due fifteen days
         after the date of receipt of an undisputed invoice.



                             8.. PRODUCT SERVICES



8.1. NPB Products and Digital-Branded Products shall be serviced as follows:


         8.1.1.  Warranty Services.  [*] for all NPB Products and
                 Digital-Branded Products

*Confidential Treatment

<PAGE>
worldwide,  except in the territories  set forth on Schedule 8.1.1.  Digital may
provide such Warranty  Services  directly to Customers or through its Authorized
Warranty Service Providers.


         8.1.2      Contract Services.  Seller shall promote Digital as Seller's
                    Strategic  Network Services  Partner for Contract  Services.
                    This shall  include,  at a minimum,  informing  any Customer
                    seeking such  Services  that  Digital is Seller's  Strategic
                    Network Services  Partner;  providing such Customer with any
                    contact  information  provided by Digital to Seller for such
                    purposes; and complying with the requirements of Sections 19
                    and 20  herein.  At  Digital's  option,  it may  offer  such
                    Contract  Services  directly  to  Customers  or through  its
                    Authorized Warranty Service Providers.


8.2.     Seller Products shall be serviced as follows:


         8.2.1.     Warranty  Services.  Seller hereby  appoints  Digital as the
                    exclusive Warranty Services provider for all Seller Products
                    in the  territories set forth in Schedule 8.2.1, as the same
                    may be amended from time to time by the parties. Digital may
                    provide  such  Warranty  Services  directly to  Customers or
                    through its Authorized Warranty Service Providers.


         8.2.2      Contract Service. Seller shall promote Digital as Seller's
                    Strategic Network Services Partner for Contract Services in
                    the territories set forth in Schedule 8.2.1, as the same may
                    be amended from time to time by the parties.  This shall
                    include, at a minimum, informing any Customer seeking such
                    Services that Digital is Seller's Strategic Network Services
                    Partner; providing such Customer with any contact
                    information provided by Digital to Seller for such purposes;
                    and complying with the requirements of Sections 19 and 20
                    herein.  At Digital's option, Digital may offer such
                    Contract Services directly to customers or through its
                    Authorized Warranty Service Providers.


8.3.     Pursuant to authorization from Digital, Seller and Seller Selling
         Partners may offer for sale Contract Services during the term of the
         Agreement in accordance with the terms and conditions of the Digital
         Gold Key Program attached hereto as Schedule 8.3 ("Gold Key Program").
         Seller and Seller Selling Partners must be granted authorization by
         Digital prior to offering such Contract Services.  Pricing, discounts
         and compensation shall be determined based on the Gold Key Program
         arrangement with the respective selling party.  Except as provided in
         the Gold Key Program terms and conditions, Digital will provide no
         other form of fee or compensation for service sales during the term of
         the Agreement.  Seller Selling Partners that have been granted
         authorization by Digital prior to execution of the Agreement
         shall not require additional authorization by Digital, provided that
         such Seller Selling Partners maintain conformance to the Gold Key
         Program requirements as set forth in the attached Schedule.
<PAGE>


8.4.     Nothing  contained  herein  shall  prevent  Digital  from  marketing or
         promoting its Services directly or indirectly to Customers, or offering
         Customers a Services Agreement independent of Seller.


8.5.     Digital may freely subcontract all of its Services obligations.


8.6.     In the event  that,  at any point  during  the term of this  Agreement,
         Digital is engaged to provide  Contract  Services to a Seller  customer
         for whom Seller  itself,  (not  through a  subcontractor)  is providing
         service on the Closing Date, then [ * ].

8.7.     In the event  that,  at any time  following  the Closing  Date,  Seller
         decides to  subcontract  its  obligations  under any  contract  for the
         servicing of Seller  Products  (either in connection with a new service
         agreement  entered into by Seller or in connection  with the renewal of
         an existing service subcontracting agreement between Seller and a third
         party), Seller shall [ * ].


8.8.     Seller acknowledges that Digital's worldwide implementation of the
         Services contemplated by this Agreement will likely be accomplished in
         a phased approach.  Seller also acknowledges that Digital's ability
         and commitment to perform such Services is greatly dependent on
         Seller's delivery to Digital of all necessary training, tools,
         diagnostics, information and support ("Readiness Requirements") in a
         timely and efficient manner.  As such, Seller will work with Digital to
         establish a Service Readiness Plan, (the "Plan").  The Plan shall be
         incorporated by reference into this Agreement, and shall establish
         detailed operational instructions concerning how to invoke the service
         relationship created by this Agreement.  The parties agree to assign
         the necessary resources to begin the development of the Plan
         immediately upon execution of  this Agreement.  Specifics to be
         included in the Plan shall be:  (i) Seller's deliverables respecting
         Digital's implementation of Warranty Services and Contract Services;
         (ii) logistics planning and disposition requirements; (iii) training
         and information/documentation deliverables for all NPB Products,
         Digital-Branded Products and Seller Products; (iv) Digital staffing
         and training requirements to satisfy mutually acceptable certification
         levels; (v) field deployment (persons/equipment); (vi) communications
         and infrastructure requirements; (vii) problem tracking and
         reporting requirements; and (viii) sales forecasting details
         (types/frequency) by region/territory.  Readiness Requirements for New
         Products shall be added to the Plan by amendment.

*Confidential Treatment

<PAGE>
8.9.     Digital  shall provide  Warranty  Services  during its normal  business
         hours,  Monday through Friday,  8 a.m. to 5 p.m. local time,  excluding
         locally observed holidays.


8.10.    Seller  will   provide  the  warranty   registration   cards  with  the
         Digital-Branded Products. All warranty registration cards shall contain
         the warranty information described on Schedule 8.10.


8.11.    Seller will provide  Digital with whole units, [ * ], for Digital's use
         in planning  and  determining  backup  support  when New  Products  are
         introduced.  Such  units  will be  shipped  to Digital at least two (2)
         weeks prior to the  commencement of any New Product sales to Customers.
         The units shall be limited to internal support use and training and may
         not be resold by Digital to  Customers.  Digital may  disassemble  such
         whole units for support  when New Products  are  introduced.  Upon FRS,
         Digital  shall  either  return any New Products  provided  hereunder or
         purchase the New Products at Digital's Spare Parts price.


8.12.    Seller  will  establish  a  Priority/Urgent  Order  support  process to
         support Digital Warranty  Services and Contract Services on an on-going
         basis.


8.13.    Seller will package Spare Parts consistent with MCS' current  packaging
         requirements, a copy of which is attached hereto as Schedule 6.1.


8.14.    If material  shortages  arise due to Seller  parts  sourcing or Digital
         support parts  consumption which impact Seller's ability to manufacture
         Products or Digital's  ability to provide  Services  under the terms of
         this  Agreement,  then  Seller and  Digital  shall meet  within two (2)
         Business Days to develop parts shortage  resolutions  which will ensure
         the uninterrupted flow of Products and Services.





                         9.. DIGITAL PRODUCT BRANDING



9.1.     Digital   hereby  grants  to  Seller,   during  the  Term,  a  limited,
         non-exclusive, worldwide nontransferrable license, without the right to
         grant  sublicenses,  to use the Digital Marks solely in accordance with
         this Agreement and the Product Road Map. The license  granted to Seller
         shall  terminate  upon   termination  of  this   Agreement,   and  upon
         termination,  Seller  shall  immediately  cease all use of the  Digital
         Marks subject to the  provisions of Section 2.4 hereof.  Seller may not
         assign  the  license  granted in this  Section  9.1  without  the prior
         written consent of Digital.


         9.1.1.   Digital  may  terminate   this  license  with  respect  to  an
                  individual  Product if Seller  neglects or fails to perform or
                  observe any of the obligations set forth on

*Confidential Treatment

<PAGE>
Schedule 9.1.1 with respect to such individual Product that Digital  determines,
in its sole discretion,  causes a material adverse effect on Digital's trademark
rights, and such condition is not remedied within thirty (30) days after written
notice of such neglect or failure;  or if Seller enters bankruptcy  proceedings,
becomes  insolvent,  makes  an  assignment  for the  benefit  of its  creditors,
discontinues  its  business or is placed in  receivership.  Notwithstanding  the
foregoing, if Seller is using reasonable and prompt efforts to cure such neglect
or failure,  Digital shall not exercise its right of termination hereunder until
the  earlier  of (i) ten (10) days  after the end of such  thirty  (30) day cure
period,  and (ii) Seller ceases using reasonable efforts to cure such neglect or
failure, as determined in Digital's sole discretion.


9.2.     Seller shall brand all products and related  materials with the Digital
         Marks in accordance  with this  Agreement,  including  this Section and
         Schedules 9.1.1 and 9.8.


9.3.     Seller shall submit all uses of the Digital Marks and the Digital Brand
         to Digital for its prior approval, which shall not be unreasonably
         withheld.  Digital's approval of any standard layouts and designs shall
         be limited to ensuring that such layouts and designs comply with the
         standards set forth in Schedule 9.1.1, as the same may be amended from
         time to time.  After a layout or design has been approved.  Seller may
         use the approved layouts or designs and substantially identical layouts
         and designs upon products, packaging and marketing collateral without
         further approval of Digital, except in the event that the standards set
         forth on Schedule 9.1.1 have been modified by Digital, in which case
         all such layouts and designs must be resubmitted to Digital for
         reapproval.  The parties shall meet once per year for Digital to review
         all uses of the Digital Marks and the Digital Brand and confirm such
         uses are in accordance with this Agreement.


9.4.     During the Term,  Seller  shall sell all NPB  Products  sold to Digital
         under the Digital  Marks.  Seller shall affix all New Products that are
         Digital-Branded  Products with the Digital Marks prior to First Revenue
         Ship.


9.5.     In the event  that  Seller  sells NPB  Products  other  than  under the
         Digital Marks, the parties shall establish an engagement plan to define
         the roles and  responsibilities  of each party in the engagement,  sale
         and delivery of such Products.


9.6.     After the Closing Date, the Seller Products listed on Schedule 9.6
         shall be sold under the Digital Marks in accordance with the Product
         Road Map.  Before the First Revenue Ship of such Products under the
         Digital Marks, Seller must have met all of Digital's requirements with
         respect to the items listed in Section 8.8 to insure that Digital is
         prepared to be the exclusive Warranty Service and Contract Service
         provider for all such Products.  Digital shall use reasonable
         efforts to expedite the approval of the branding of all such Seller
         Products with the Digital Marks, it being understood that the average
<PAGE>

         time required is expected to be no less than eight (8) weeks but in no
         event shall exceed twelve (12) weeks after the Closing Date.


9.7      All  Products set forth on or  anticipated  by the Product Road Map are
         eligible to be branded  with the Digital  Marks,  subject to  Digital's
         consent,  such consent not to be  unreasonably  withheld,  and provided
         such Products meet the criteria set forth on Schedule 9.1.1,  which may
         reasonably  be  amended  from  time to time by  Digital.  Seller  shall
         propose  Products to Digital to determine if such  Products  meet these
         criteria.  Digital  shall  have the sole right to  determine  whether a
         Product  meets the  criteria.  If Seller  disputes a  determination  by
         Digital that a Product  should not be branded  with the Digital  Marks,
         then the dispute will be subject to the Escalation Process set forth in
         the Product  Road Map  Schedule.  if such  Escalation  Process does not
         resolve the issue, Digital shall not be obligated to brand the Products
         with the Digital Marks. Notwithstanding the foregoing, Seller may seek,
         through litigation,  a determination that the Product met the criteria,
         and,  as relief,  that the Product  should be branded  with the Digital
         Marks.  Any  Products  for which  Seller  obtains  such relief shall be
         treated as Digital-Branded Products for purposes of this Agreement.


9.8.     Seller shall adhere to all Digital standards regarding the use of the
         Digital Marks, as applicable to Digital's own products.  The current
         Digital standards are set forth in Schedule 9.8.  Digital shall
         provide Seller with sixty (60) days prior written notice of any
         material changes to Digital's trademark standards.  In the event that
         Digital provides less than sixty (60) days notice: (i) any direct costs
         incurred by Seller for materials that conformed to the previous
         trademark guidelines during the Shortfall Period shall be reimbursed by
         Digital; and (ii) Seller shall not be responsible for failures
         to meet shipping dates arising from the fact that Digital provided less
         than sixty (60) days notice. For purposes of this Section 9.8,
         "Shortfall Period" shall mean the period prior to the date that
         Digital provided notice of the change in its trademark standards
         equivalent to (60 days minus the number of days notice actually
         provided by Digital).


9.9.     Seller shall be entitled to refer to an organization within Seller that
         sells only  Digital-Branded  Products as the "Digital  Network Products
         Group, a Cabletron Systems, Inc. Company" (the "Seller Tradename").


         9.9.1      Seller  shall  not use  Seller  Tradename  in any  way  that
                    suggests  that the Seller is Digital or is authorized to act
                    on behalf of Digital.


         9.9.2      Seller  may not use the word mark  "DIGITAL"  other  than as
                    part of the Seller Tradename.


         9.9.3      Seller shall be entitled to use the Seller  Tradename on all
                    marketing,   business  and  product  collateral,   including
                    without  limitation  business cards,  stationary,  facsimile
<PAGE>

                    sheets,  price  lists,  trade show  displays  and  material,
                    training  materials,   product   documentation  and  similar
                    materials.


         9.9.4      The Seller Tradename and the  Relationship  Logo may only be
                    used to identify the group or division  within  Seller which
                    is   manufacturing,   selling,   marketing,   and  servicing
                    Digital-Branded Products and doing business under the Seller
                    Tradename and the Relationship  Logo. It may not be used for
                    product branding.


         9.9.5      Seller  shall not  co-join  the  Seller  Tradename  with the
                    Digital Brand.


         9.9.6      Subject to the limitations set forth herein,  Buyer shall be
                    entitled to use the  Relationship  Logo on the same material
                    upon which the Seller Tradename appears.


         9.9.7      The  example  set  forth  on  Schedule   9.9.5   illustrates
                    permitted  uses of the Digital  Brand,  subject to Digital's
                    approval,  with respect to color, size and appearance of the
                    Digital Brand.


         9.9.8      Seller  acknowledges  that all use of the word  "DIGITAL" by
                    Seller  in the  Seller  Tradename  shall  be  pursuant  to a
                    license from  Digital,  and that all such use shall inure to
                    the benefit of Digital.


         9.9.9.     Upon request by Digital,  Seller shall assist Digital in the
                    preparation,  execution and filing of any registered user or
                    other  agreements  deemed  necessary  by Digital in order to
                    protect  the Digital  Marks,  and  Digital  shall  reimburse
                    Seller for all of Seller's  reasonable  out-of-pocket  costs
                    incurred in connection therewith.


9.10.    Seller  shall  abide  by the  Digital  Trademark  License  and  Quality
         Requirements terms set forth on Schedule 9.6.


9.11     Seller is not granted  any rights to use the Digital  Marks on products
         or services other than pursuant to this Agreement.


9.12.    Digital agrees that it shall not use the mark "Digital Network Products
         Group" after the Term.

<PAGE>




                    10.. SELLER'S SALE RESTRICTIONS/PARTIES' SALES COMPENSATION



10.1.    All NPB  Products  and  Digital-Branded  Products,  and any  components
         thereof,  shall be included in the Digital  Price Book.  In the future,
         Digital,  in its sole  discretion,  may include Seller  Products in the
         Digital Price Book. All packaging for NPB Products and  Digital-Branded
         Products, and any components thereof, shall bear the Digital Marks.


10.2     Unless otherwise agreed between the parties,  consistent with Digital's
         current policy,  Digital's internal sales force shall earn Full Revenue
         Quota  Credit in  connection  with (i) its sale of all  Digital-Branded
         Products and Services,  and (ii) Approved  Seller Products and Services
         that have been sold and fulfilled by Digital.


10.3     In the  event  that  Seller's  direct  sales  force  takes an order for
         Digital-Branded  Products directly from end users,  Seller must fulfill
         such  orders  through a Seller  Selling  Partner.  Notwithstanding  the
         foregoing,  unless otherwise agreed between the parties, Seller's sales
         force  shall  receive  comparable  sales  quota  credit for the sale of
         Digital-Branded Products as it receives for Seller Products.


10.4.    Seller  shall  be  responsible   for  accrediting  all  Seller  Selling
         Partners,  pursuant to Seller's  guidelines set forth on Schedule 10.4,
         as they may be amended from time to time.


10.5.    Seller agrees to use reasonable efforts to comply with Digital's
         currently existing point-of-sale ("POS") process, which requires, among
         other things, the monthly provision by Seller of sales out information
         for all Digital-Branded Products sold by Seller Selling Partners,
         provided that the foregoing shall be a required obligation for Tier-1
         resellers.  Digital agrees to use its reasonable efforts to provide
         Seller with sales out information for all Digital-Branded Products sold
         by Digital Partners, provided that the foregoing shall be a required
         obligation for Tier-1 resellers.  The specific information provided by
         each party shall include (i) sales activity per the preceding calendar
         month; (ii) Digital-Branded Product name and number; (iii)
         end-Customer's name; (iv) vertical market; (v) ship to and bill to
         locations (including country, state, and zip/postal code); (vi) total
         invoice cost; and (viii) quantity per unit and extended cost.


10.6     Each party shall have the right to audit at its own expense,  the other
         party's  documents  and  records  to  the  extent  they  relate  to any
         obligation under this Section 10. Each party shall notify the other not
         less than thirty  (30) days prior to its intent to conduct  such audit.
         All audits shall be conducted during normal working hours. Audits shall
         be conducted no more than once during each six (6) month period.
<PAGE>


10.7     Digital  may not  provide  sales  quota  credit on sales of third party
         network  equipment,  other than Seller  Products,  to any Digital sales
         group  except for sales  through the Digital  Services  Division  sales
         force.




                               11.. DOCUMENTATION



11.1.    Seller shall supply Digital with copies of originals and/or  electronic
         versions of all Product Information,  including the documents listed in
         the documentation plan, attached hereto as Schedule 11.1.


11.2.    Seller hereby  grants to Digital and its  Authorized  Warranty  Service
         Providers a royalty-free, non-exclusive, worldwide license to reproduce
         and  distribute,  in whole or in part, all Product  Information and any
         other service related materials or documentation  provided by Seller to
         Digital or Digital Partners hereunder.


11.3.    Seller shall provide Digital with sufficient  copies,  in Digital media
         (e.g., CD format),  of the then current generally  available  technical
         documentation for the Products for supporting sales and services of the
         Products.  Digital  shall  have the  right at no  charge,  to copy such
         documentation  for  its  own  internal  use,   including  posting  such
         documentation on Digital's internal electronic bulletin board.



                      12.. PROPRIETARY RIGHTS AND LICENSES



12.1.    Digital owns all right, title and interest,  including all Intellectual
         Property  Rights  in  all  materials  (including  diagnostic  Software,
         hardware and Software tools and associated  documentation) developed by
         Digital  for  its  own use or use of its  Authorized  Warranty  Service
         Providers in the performance of Services.


12.2     Seller   hereby   grants  to  Digital  and  its   Digital   Partners  a
         non-exclusive,  worldwide  license,  until the  expiration  of the last
         Digital Services Agreement, to duplicate, use, and distribute, directly
         and indirectly,  all Seller Software,  including revisions and updates.
         All Software,  including revisions and updates,  shall be available for
         duplication and  distribution  internally by Digital,  and to Customers
         and/or  third   parties  via   down-loading   from   Seller's   on-line
         database(s).  Digital will pay Seller a royalty on any Software that is
         duplicated and distributed by Digital, at rates to be negotiated by the
         parties.  Royalty  payments  shall be  reduced by the amount of any tax
         required to be withheld  against  Seller  income  from  royalties  by a
         government  or  governmental  agency;  provided  that the parties shall
<PAGE>

         cooperate  in good  faith to  reduce  such  withholding  to the  extent
         legally  possible.  Where reduced or nil rates of withholding tax apply
         under the provisions of double taxation treaties,  Seller shall provide
         Digital with the authorizations  necessary to apply for such rates, and
         Digital  shall  make  such  filings  as may be  necessary  to claim the
         benefit of the reduced or nil rate.  Digital shall  provide  Seller any
         certification  of the amounts  withheld and copies of any  certificates
         furnished  by a  withholding  jurisdiction.  In the event that  Digital
         makes any payment  without  deduction of withholding  tax, Seller shall
         indemnify  Digital  against any subsequent  liability  arising from the
         failure  to make such a  deduction.  Prior to First  Revenue  Ship of a
         Software  Product or revision or upgrade  thereto,  Seller will provide
         Digital  with a  distribution  master  for such  Product,  revision  or
         upgrade.


         12.2.1     Notwithstanding  the foregoing,  Digital may issue no charge
                    Purchase  Orders for all Software that is provided by Seller
                    generally to Customers at no cost.  Such  Software  shall be
                    provided  to  Digital in such  quantities  as  requested  by
                    Digital, on a royalty-free basis.


         12.2.2     Notwithstanding  the  foregoing,  the  provisions of Section
                    12.2  shall  not  apply  to  Seller's   "Spectrum"  software
                    Product.  With respect to Seller's Spectrum Product,  Seller
                    grants to Digital  the right to provide  support,  including
                    upgrades and revisions, for such Product subject to mutually
                    agreed upon pricing and other provisions for the service and
                    support of such Product.


12.3     Seller hereby  grants to Digital and its  Authorized  Warranty  Service
         Providers a royalty free,  non-exclusive,  worldwide license, until the
         expiration  of  the  last  Digital  Services  Agreement,   to  use  and
         distribute,  and to provide  Customers,  both directly and  indirectly,
         electronic  access to all data and  information  contained  in Seller's
         Product   information    database   (excluding   company   confidential
         information) for the purpose of providing support to Customers.


12.4.    Seller hereby grants to Digital and Digital  Partners,  during the Term
         and  for  the  time  period  set  forth  in  Section   2.2  hereof,   a
         royalty-free,  non-exclusive,  worldwide  license  to use the  Seller's
         Marks in connection with the marketing,  promotion and sale of Products
         or Services.  Under no circumstances shall Seller's branding,  labeling
         or Product identification be modified or otherwise mutilated.


12.5.    Except as may be  otherwise  expressly  stated  herein,  and  except as
         required by a party to  exercise  its  express  rights and  obligations
         hereunder,  neither the terms of this Agreement, nor the acts of either
         party under this  Agreement,  shall be considered in any way as a grant
         of any license whatsoever under any of Digital's or Seller's present or
         future Intellectual Property Rights, nor is any such license granted by
         implication, estoppel, or otherwise.
<PAGE>



                    13.. PRODUCT LOANS, BETA SITES, MODELING



13.1.    Digital  may be given  the  opportunity  to act as a beta  site for all
         Products.  To the extent  normally  required  by Seller,  Digital  will
         execute Seller's standard beta site Agreement,  subject to any mutually
         agreeable modifications thereto.


13.2.    Seller shall make  available to Digital,  at no charge to Digital,  and
         for  use by  appropriately-trained  Digital  personnel,  all  available
         application   Software   which  is  produced  by  Seller  and  normally
         distributed  to  Seller's  Selling  Partner to assist  field  sales and
         engineering  personnel in the  modeling,  configuration  and testing of
         Products.


13.3.    Seller shall make available for use by Digital and Digital's Authorized
         Warranty Service Providers service tools (including diagnostic Software
         and hardware,  hardware tools and associated  documentation)  to assist
         Digital  and  Digital's   Authorized  Warranty  Service  in  performing
         Services  hereunder.  The  types,  quantities  and  deployment  of such
         service  tools  will  be  mutually  determined  by  the  parties.   The
         proprietary  service  tools  shall  remain the  exclusive  property  of
         Seller, and shall be returned to Seller upon expiration or termination
         of this Agreement.





                        14.. TECHNICAL SUPPORT BY SELLER



14.1     During  the  Term and  until  the  expiration  of all  Digital  Service
         Agreements,  not to exceed five (5) years,  Seller will assist  Digital
         personnel  in  resolving  Customer or Product  problems,  including  by
         escalating to Seller's  engineering and  manufacturing  organization as
         set forth in the  Escalation  and  Prioritization  Guidelines  attached
         hereto as Schedule 14.1, until the Customer problem has been completely
         resolved  and  closed in  accordance  with the  parties'  call  closure
         procedures.


14.2.    During the Term and until the expiration of all Digital Service
         Agreements, not to exceed five (5) years, Seller will provide MCS with
         level 3 technical support to allow MCS to provide Warranty Services
         and Contract Services to Customers and for Products used internally.
         Such Seller support shall be provided from Seller's Support Center via
         telephone, facsimile or e-mail messages, as appropriate, twenty-four
         (24) hours per day, seven (7) days per week, for Priority 1 and 2
         Problem Escalations, and eight (8) hours per day (during Digital's
         standard working hours), Monday through Friday, for Priority 3
         and 4 Problem Escalations, as defined, and in accordance with, the
         Escalation and Prioritization Guidelines.
<PAGE>

14.3.    During  the  Term and  until  the  expiration  of all  Digital  Service
         Agreements,  not to exceed five (5) years, Seller shall provide level 3
         Software  support in  accordance  with the service  delivery  model set
         forth on Schedule 14.3.


14.4.    Seller  shall  provide  Digital  and  Digital  Partners  with  pre- and
         post-Product  sales  technical  support,  as set  forth in a  Technical
         Support Plan to be mutually  agreed upon by the parties  within  thirty
         (30) days of execution of this  Agreement  and  incorporated  herein by
         reference,  and  any  other  sales  and  technical  support  reasonably
         requested by Digital.


14.5.    [*]

14.6.    All support provided by Seller pursuant to this Section 14 shall be [ *
         ]. Seller shall utilize a Product serial  numbering system that ensures
         that Digital has full  capabilities  to validate a  Customer's  Product
         Warranty when a Customer is contacting Digital for Warranty Services.


14.7.    Seller shall  utilize a Product  serial  numbering  system that ensures
         that Digital has full  capabilities  to validate a  Customer's  Product
         Warranty when a Customer is contacting Digital for Warranty Services.


14.8.    Seller  shall not be in breach of its  support  obligations  under this
         Agreement  in the event  that it ceases to provide  support  due to the
         fact that Seller no longer has access to, or any inventory of, ASICs as
         that term is defined in the Asset Purchase Agreement.



                                 15.. PERSONNEL



15.1.    Each party shall appoint a Relationship  Director to manage all aspects
         of   the   relationship    including:    (i)   agreement    amendments,
         interpretations,  and  negotiations;  (ii)  field and sales  engagement
         planning information  management;  (iii) partner business reviews; (iv)
         escalations;  (v) partner sales and marketing programs;  (vi) strategic
         business  planning  including the Product strategy and the Product Road
         Map; and (vii) such additional matters that the parties may agree upon.


*Confidential Treatment

<PAGE>


15.2.    The  parties  agree  that  during the Term,  they  shall both  maintain
         appropriate   personnel  teams  ("Program   Office")  that  shall  meet
         periodically  to  effect  the  terms  of  this   Agreement,   including
         individuals with the following areas of expertise:


         15.2.1     forecasts and Spare Parts management, including acquisition;


         15.2.2     product and service planning and management;


         15.2.3.    pre- and post-sales technical support, including
                    configuration and server interface support;


         15.2.4.    marketing development program management;


         15.2.5.    contract performance;


         15.2.6.    third party relationship management;


         15.2.7.    agreement amendments, interpretations, and negotiations;


         15.2.8.    field and sales engagement planning information management;


         15.2.9.    partner business reviews;


         15.2.10.   partner sales and marketing programs;


         15.2.11.   strategic business planning;


         15.2.12.   supporting global Customers and global partners; and


         15.2.13.   training development.


15.3.    The initial  organization  structure for the parties'  relationship  is
         attached  as  Schedule  15.3.  Seller  shall  have the right to approve
         Digital's initial Program Office,  such approval not to be unreasonably
         withheld.


15.4.    The Digital  Program Office shall consist of at least thirty  dedicated
         individuals  and will include people within both  Digital's  Enterprise
         Sales Force and Digital Services groups (or such groups'  equivalents),
         reasonably  acceptable to Seller as related to employees  identified on
         the Seller's Key  Employee  Team,  as that team is defined in the Asset
         Purchase   Agreement.   Seller's   Program   Office  shall  consist  of
         individuals with complimentary skills and knowledge.
<PAGE>


15.5.    For any period during which Seller is providing  support under Sections
         14.1,  14.2,  14.3 or 17.1 after the term hereof the parties'  pre- and
         post-sales technical support team shall continue for such period.





                                 16.. TRAINING



16.1.    Seller shall provide to Digital and Digital Partners all training
         services necessary to meet the varying needs and requirements of
         Digital's sales support organizations, including training: (i) sales
         and sales support personnel; (ii) design architects and consultants;
         and (iii) on-site and off-site maintenance and technical service,
         support personnel and engineering services personnel.  The training may
         be provided using the following methods:  (i) computer based training
         (CBT); (ii) train the trainer programs; (iii) web-based offerings; (iv)
         test-outs for certification; and/or (v) additional training
         requirements set forth in a Training Plan to be determined by the
         parties and incorporated by reference within thirty (30) days of this
         Agreement.  Training will be held at locations to be determined by
         mutual agreement.


16.2.    Seller  will  provide  Digital  and  Digital  Partners  with  sales and
         technical  training  as  follows:  [ * ].  Seller  agrees that all such
         training may be paid for with MDF funds described in Section 4.9.


16.3.    Seller  shall  provide to Digital and Digital  Partners  all  materials
         generally  made  available  to its Seller  Selling  Partners  including
         Seller's self-study  material on the Products,  if any, and sets of all
         present and future maintenance, diagnostic, and training documentation,
         including  video  tapes  and  student  workbooks,  applicable  to  each
         Product.


16.4.    Upon  Digital's  request,  Seller  shall  provide  Digital  and Digital
         Partners  with  software,  videotapes,  presentation  scripts and other
         Product  marketing  materials  offered  by  Seller to  demonstrate  the
         features  and  functions of the Products for use by Digital and Digital
         Partners  in training or in the sales and  marketing  of its  Services.
         Seller  agrees to make  available  to Digital and Digital  Partners all
         necessary training and training documentation


* Confidential Treatment
<PAGE>

in advance of FRS of New  Products to enable  Digital  and  Digital  Partners to
adequately prepare for New Products sales and support.





                                17.. END OF LIFE



17.1.    Upon termination of this Agreement, or in the event Seller discontinues
         the manufacture and/or distribution of a Product(s) and/or removes such
         Product(s) from its Price List,  (collectively  "End of Life"), [ * ].


17.2     Seller  may  not  designate  a  Product  as End of Life  other  than in
         accordance with the Product Road Map.





                    18.. ENGINEERING AND FIELD CHANGE ORDERS



18.1.    Seller will provide to Digital all safety  related ECOs,  including all
         required Spare Parts, and technical service  bulletins,  [ * ]  by  
         Seller  or the  applicable  manufacturer.  All  other  ECO
         materials and technical service bulletins are to be provided to Digital
         [ * ] by Seller or the applicable manufacturer.


18.2.    Seller will bear all Spare  Parts  costs and will work with  Digital to
         determine  the labor costs for all safety  related  ECO's and mandatory
         ECO's required to bring the Product into functional conformity with its
         design specifications.  In addition,  ECO's that affect purchased stock
         and/or consigned units, purchased field Spare Parts, and Products under
         Digital  Services  Agreements  will be implemented in accordance with a
         mutually agreed upon update schedule at no charge to Digital.


18.3.    If Seller notifies Digital of a safety-related  Product recall,  Seller
         shall be fully  responsible for all costs associated with the purge and
         return of Products from Digital's inventory.





*Confidential Treatment

<PAGE>
For non-safety Product recalls, the parties shall mutually determine at the time
of  notification  by Seller how payment of inventory  purges and Product returns
shall be handled.  Digital will advise  Seller of the need for an ECO('s) due to
problems or defects in form,  fit or function of the Products or Product  safety
concerns.  To the extent Seller  determines a change is necessary,  Seller shall
work with Digital to determine the means by which implementation of such changes
shall be accomplished.





              19.. SALES AND RELATIONSHIP PLANNING AND ENGAGEMENT



19.1.    Digital and Seller will inform the sales and support  personnel of each
         as to the  availability,  pricing and  positioning  of the Products and
         Services  by  including  appropriate  information  regarding  Digital's
         preferred  services  and systems  provider  role and  Seller's  network
         products  partnering role in Seller's and Digital's sales and marketing
         literature,  trade shows, customer seminars,  sales training, and other
         appropriate marketing/business development materials.


19.2.    The parties'  regional and country  management  shall compile a list of
         countries  where it is  advantageous  to develop formal business plans.
         These  jointly  developed  business  plans  will  guide the  engagement
         between  Digital  and  Seller  in such  country(ies),  subject  to this
         Agreement. The plans will include, but not be limited to: (i) Digital's
         targeted  Product  needs;  (ii)   opportunities  for  joint  sales  and
         marketing  activities;  and (iii) appropriate business review processes
         between Digital and Seller.


19.3.    Each party shall develop standard  descriptions of itself, its products
         and its services for inclusion in the other  party's sales  material as
         deemed appropriate by the other party.  Notwithstanding  the foregoing,
         each party shall have the right to  approve,  upon  reasonable  advance
         notice, any sales material that describes itself, its products,  or its
         services.  Such approval shall be provided  promptly,  and shall not be
         unreasonably withheld.


19.4.    Subject to client ownership and/or confidentiality requirements,
         Digital will use reasonable efforts to keep Seller generally informed
         as to (i) problems encountered and resolutions developed with respect
         to any Product, and (ii) all material modifications, design changes or
         improvements to the Products suggested by any Customer, or any employee
         or agent of Digital.  Digital shall have no obligation to provide
         Seller with the actual modifications, design changes, or improvements.
         The provision of the foregoing information shall not confer on Seller
         any Intellectual Property Rights in such information. Seller may use
         all such information without obligation of any nature to Digital.
         Seller's use of such information shall be at its own risk and neither
         Digital nor the party making the applicable suggestion shall be liable
         for any damages arising from such use.
<PAGE>


19.5.    Digital shall receive  invitations to attend Seller's annual  partners'
         conference,  and  Seller  shall  waive  any  registration  or other fee
         normally  charged  by  Seller  as a  condition  of  attendance  at such
         conference.





                                 20.. MARKETING



20.1.    Seller shall promote Digital as its Strategic Network Services Partner,
         and Digital shall promote the Seller as its Strategic  Network Products
         Partner.   This  designation   does  not  preclude  any   partnerships,
         relationships and programs between Digital and other vendors or service
         providers,  or between  Seller and other vendors or service  providers,
         that do not conflict with this Section 20,  provided that neither party
         shall  designate  any  other  party in a manner  that may  imply a more
         significant relationship.


20.2.    Seller and Digital will mutually agree on a joint  marketing and public
         relations plan to support sales and services  through Digital  Partners
         and Seller Selling Partners ("Marketing Plan"). The Marketing Plan will
         be updated  minimally  twice a year to ensure that it remains  relevant
         and current.


         20.2.1.  Digital will  implement the  activities  set forth in Schedule
                  20.2.1 to transition  Digital's  relationship  with  Digital's
                  resellers to Seller.


20.3.    Except as set forth in this  Agreement,  both  parties  shall  have the
         exclusive  right to  determine  the  nature  and  extent  of their  own
         advertising and marketing efforts.


20.4.    Seller  shall be  designated  at a corporate  level as  Digital's  sole
         preferred  supplier for its internal network  equipment needs.  Digital
         shall not designate a competitor of Seller as a major internal  network
         equipment supplier.





                                 21.. WARRANTY



21.1.    The  manufacturer of a Product shall bear all costs associated with the
         one-year manufacturers warranty.


21.2.    Seller  warrants to Digital  that any  services  performed by Seller in
         connection  with this  Agreement  shall be performed  in a  workmanlike
         manner.

<PAGE>
21.3.    Seller warrants that all Products sold by Seller to Digital under the
         terms of this Agreement will be free from defects in workmanship and
         materials under normal unse and service for (i) one year for hardware
         and Software and (ii) ninety (90) days for floppy dics and magnetic
         media.  All Warranty claims must comply with the terms of the Warranty
         set forth on Schedule 8.10.  The manufacturer of the Product, whether
         Digital or Seller, as the case may be, shall be responsible for all 
         Product repairs during the one (1) year Warranty period.


21.4.    Seller warrants that (i) the Software provided hereunder will perform
         in substantial conformance to the program specifications therefor 
         during its one-year warranty period; (ii) that all defects in the 
         Software identified during the one-year warranty period will be 
         corrected; (iii) that the Software is Year 2000 Compliant; and (iv)
         the magnetic media containing Software will not fail during the first
         ninety (90) days.


21.5.    The Warranty for Digital-Branded  Products shall be as set forth on the
         Warranty  Schedule  attached  hereto,  Schedule 8.10. The parties shall
         mutually  agree on all additions to,  deletions  from or changes to the
         Schedule.  Prior to shipment of any  Digital-Branded  Products,  Seller
         shall  incorporate  the  Warranty  set forth on Schedule  8.10 into its
         Products   literature,   documentation   and   corresponding   Warranty
         registration cards or forms.


21.6.    In the case of a breach of the forgoing warranties, Seller shall use
         commericially reasonable efforts to remedy the breach.


21.7.    Any replaced or repaired Spare Parts carry an additional ninety (90)
         day warranty or the remainder of the initial Warranty period, whichever
         is longer.  All expenses associated with the transportation of Products
         (to and from Seller's facilities) shall be borne by Seller, except in
         the event that Products shall not require repair due to a no problem
         found ("NPF") diagnosis by Seller.  In cases of NPF, Digital shall be
         responsible fo delivery expenses to Seller's facilities, and Seller
         shall pay for delivery expenses back to Digital provided that.


         21.7.1 In the event that Digital determines that a product is DOA, 
                Seller shall ship a replacement Product at Seller's cost within
                twenty-four (24) hours of notification by Digital.  Digital
                shall return the DOA Product to Seller at Seller's cost.

         21.7.2 In the event that Seller evaluates and determines that there is
                NPF in greater than ten (10%) percent of the Products or parts
                returned in a six (6) month period, Seller reserves the right to
                charge Digital for each returned unit determined to be NPF 
                thereafter the lesser of (i) $150 or (ii) twenty-five percent
                (25%) of the purchase price.



<PAGE>
21.8.    The above warranties shall survive any delivery,  acceptance,  payment,
         termination  or expiration of a Purchase Order or this  Agreement,  and
         shall run to Digital, its successors, assigns and Customers.


21.9.    THE FOREGOING WARRANTIES OF SELLER ARE IN LIEU OF ALL OTHER WARRANTIES,
         EXPRESS OR  IMPLIED,  INCLUDING  WITHOUT  LIMITATION  ANY  WARRANTY  OF
         MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.





                              22.. STOCK ROTATION



22.1.    Digital  may  Rotate  up to [ * ]. In  accordance  with  this  Section,
         Digital may Rotate  Digital-Branded  Products  for Seller  Products and
         Seller Products for Digital-Branded Products, in its sole discretion.


22.2.    Digital shall bear all  transportation  charges to Seller's  designated
         site for Products to be Rotated.


22.3.    In no event shall Seller discontinue or remove a Product from its price
         list other than in accordance with the Product Road Map process.



                              23.. ESCROW DEPOSIT



23.1     Upon  request by  Digital,  Seller will place the Escrow  Deposit  into
         escrow with a nationally  recognized  escrow agent in the United States
         reasonably  acceptable to both parties (the "Escrow Agent") pursuant to
         a mutually agreed escrow agreement between the parties. Digital will be
         responsible  for the expenses of the Escrow Agent,  and any of Seller's
         direct and  reasonable  costs in excess of $5,000 per  quarter.  Seller
         shall not be obligated to escrow any third party component  utilized in
         connection with its Spectrum Products.


23.2.    The escrow agreement will provide,  among other things, the terms under
         which Digital will have access to the Escrow Deposit.

*Confidential Treatment

<PAGE>

                             24.. SUPPLY BY DIGITAL



24.1.    Digital shall supply Seller with all Unique  Materials that are used in
         NPB Products and Seller Products.  In the event of component  shortages
         by Digital, Digital will allocate among Seller and other purchasers pro
         rata based on Digital's  Demand Forecast for the past three (3) months.
         Pricing for unique  components  will be the most favored nation pricing
         for  similar  volumes  but no  more  than  existing  transfer  pricing,
         adjusted for cost increases.


24.2.    Seller  will have the right to purchase  NPB  Products  from  Digital's
         Taiwan and Scotland  facilities for up to an eighteen (18) month period
         commencing  on the  Closing  Date.  The  price to  Seller  for such NPB
         Products shall be (i) Digital's current  intercompany  transfer pricing
         during the six (6) month  period  after the Closing Date and (ii) at an
         arm's length negotiated price thereafter.


         24.2.1   Digital  shall   provide   Seller  with   Digital's   standard
                  manufacturing  warranty for NPB  Products  purchased by Seller
                  under this Section 24.


24.3.    The parties shall  negotiate the pricing,  terms,  and  conditions of a
         separate supply agreement prior to the Closing Date.





                   25.. LIMITATION OF LIABILITY AND REMEDIES



25.1.    Except for damages awarded to a third party for indemnification  claims
         covered by this  Agreement,  neither party shall be liable to the other
         for any  damages  arising  from lost data,  incidental,  consequential,
         special  or  indirect  damages  of the  other of any kind  (whether  in
         contract,  tort, or under statute),  even if the party has been advised
         of the possibility of such damages.


25.2.    Notwithstanding any provision contained herein to the contrary,  except
         with  respect  to  the  Product  Credits  and  Minimum  Product  Volume
         commitments,  in no event will the aggregate  liability of either party
         or its respective  officers,  directors,  employees and subsidiaries to
         either party or to any third person for damages,  direct or  otherwise,
         arising out of or in connection with this Agreement  exceed twenty (20)
         million  dollars  ($20,000,000)  regardless  of the  cause  or  form of
         action.
<PAGE>

25.3.    The parties  acknowledge  that, in addition to any remedy they may have
         at law or equity,  nothing in this  Agreement  shall prevent (i) either
         party from  seeking  termination  of the  Agreement;  (ii) Digital from
         recovering  its  remaining  Product  Credits as damages;  and/or  (iii)
         Seller from recovering  Digital's  remaining Minimum Product Volumes as
         damages.


25.4.    Nothing in this  Agreement  shall  preclude  either  party from seeking
         relief  through law or equity for any breach by the other party of this
         Agreement.





                    26.. CONFIDENTIAL INFORMATION AND AUDITS



26.1.    For purposes of this Agreement,  "Confidential  Information"  means (i)
         any  information  regarding  the  terms  of this  Agreement;  (ii)  any
         information,  in whatever form, designated by the disclosing party (the
         "Disclosing  Party") in writing as confidential,  proprietary or marked
         with words of like import when  provided  to the  receiving  party (the
         "Receiving  Party");  and  (iii)  information  orally  conveyed  if the
         Disclosing  Party states at the time of the oral conveyance or promptly
         thereafter that such information is Confidential, and provides specific
         written confirmation thereof within 30 days of the oral conveyance.


26.2. Confidential Information will not include information which:


         26.2.1.  at or prior to the time of disclosure by the Disclosing Party
                  was known to the Receiving Party through lawful means;


         26.2.2.  at or after the time of  disclosure  by the  Disclosing  Party
                  becomes  generally  available to the public  through no act or
                  omission on the Receiving Party's part;


         26.2.3.  is  developed  by  the  Receiving  Party  independent  of  any
                  Confidential  Information  it  receives  from  the  Disclosing
                  Party; or


         26.2.4.  the Receiving  Party receives from a third Person free to make
                  such disclosure without breach of any legal obligation.


26.3.    The Receiving Party may disclose  Confidential  Information pursuant to
         any statute, regulation, order, subpoena or document discovery request,
         provided that prior written  notice of such  disclosure is furnished to
         the  Disclosing  Party as soon as  practicable  in order to afford  the
         Disclosing  Party an opportunity  to seek a protective  order (it being
         agreed  that if the  Disclosing  Party is  unable to obtain or does not
         seek a protective order and the Receiving Party is legally compelled to
         disclose such  information,  disclosure of such information may be made
         without liability).

<PAGE>

26.4.    The Receiving Party acknowledges the confidential and proprietary
         nature of the Disclosing Party's Confidential Information and agrees
         that it shall not discuss, reveal, or disclose the Disclosing Party's
         Confidential Information to any other Person (other than Affiliates),
         or use any Confidential Information for any purpose other than as
         contemplated hereby, in each case, without the prior written consent of
         the Disclosing Party.  The Receiving Party agrees to take reasonable
         precautions (no less rigorous than the Receiving Party takes with
         respect to its own comparable Confidential Information) to prevent
         unauthorized or inadvertent disclosure of the Confidential Information
         of the Disclosing Party. In the event that a Receiving Party wished to
         disclose Confidential Information to one of its professional advisors,
         it may do so only if that professional advisor agrees to abide by the
         terms of this Section.


26.5.    The  Receiving  Party  will,  at the request of the  Disclosing  Party,
         during the Term or  thereafter  (i)  promptly  return all  Confidential
         Information  held or used by the Receiving  Party in whatever  form, or
         (ii) at the discretion of the Disclosing  Party,  promptly  destroy all
         such Confidential Information,  including all copies thereof, and those
         portions  of  all  documents   that   incorporate   such   Confidential
         Information.


26.6.    In  view  of the  difficulties  of  placing  a  monetary  value  on the
         Confidential  Information,  the  Disclosing  Party may be entitled to a
         preliminary and final  injunction  without the necessity of posting any
         bond or  undertaking  in  connection  therewith  to prevent any further
         breach of this Section or further  unauthorized use of its Confidential
         Information.  This  remedy  is  separate  from  any  other  remedy  the
         Disclosing Party may have.


26.7.    The  provisions  of this Section will survive for three years after the
         end of the Term.


26.8.    Seller  shall  have  the  right to  audit  consigned  parts or units as
         received,  stored and consumed by Digital.  Seller shall notify Digital
         not less than  thirty  (30) days prior to its  intent to  conduct  such
         audits.  All audits shall be conducted  during  normal  working  hours.
         Audits  shall be  conducted no more than once during each six (6) month
         period.  Physical  inventory and cycle counts are the responsibility of
         Digital. Such physical inventory and cycle counts shall be performed in
         accordance with Digital standard business policies and practices.


26.9.    Each party agrees to retain  appropriate  documentation  regarding  its
         obligations   hereunder,   for  at  least  three  years  following  the
         termination of this  Agreement.  Each party shall have the right at its
         own expense,  not more than once each year on reasonable advance notice
         and during  normal  business  hours,  to have its  independent  auditor
         inspect such documentation for the purpose of verifying the accuracy of
         the figures  reported and amounts owed pursuant to this Agreement.  Any
         discrepancies  that are identified as a result of such an audit and are
         not disputed will be promptly corrected by the parties. Any information
         disclosed   as  a  result  of  such  an  audit  will  be   Confidential
         Information.

<PAGE>




                           27.. COMPLIANCE WITH LAWS



27.1.    All Products  supplied  and work  performed by Digital and Seller under
         this Agreement shall comply with all material applicable (United States
         and  other)  laws  and   regulations,   including   customs  and  trade
         regulations   regarding   restraints  on  the  use  of  convict  labor,
         government  procurement,  export  controls,  environmental,  health and
         safety,  and labor  laws and  regulations.  Either  party's  failure to
         comply with any of the requirements of this Section shall be considered
         a material breach of this Agreement.


27.2.    Upon request,  the parties agree to provide the other with  information
         and  certifications  required to  demonstrate  compliance  with Section
         27.1.  Schedule  27.2  describes  some,  but not all of the  applicable
         United  States  regulatory  requirements  with which  Seller  agrees to
         comply and/or provide information and certifications.





                       28.. INDEMNIFICATION AND INSURANCE



28.1.    Seller shall defend, indemnify, and hold Digital, its Subsidiaries, and
         Digital Partners and their  representatives,  its officers,  directors,
         agents,  subsidiaries,  affiliates,  and  employees  harmless  from and
         against  any and all claims,  losses,  expenses  (including  reasonable
         attorney's  fees and  expenses),  demands,  settlements,  or  judgments
         ("Damages") which result from or arise out of:


         28.1.1.  Seller's breach of any obligation, representation, covenant or
                  warranty provided or required hereunder.


         28.1.2.  Any claim against Digital alleging that Products, or any
                  component thereof, infringes any Intellectual Property rights
                  in any country.  If an injunction against Digital's, a
                  Customer's or Digital Partners' use, sale, lease, license, or
                  other distribution of the Products, or any component thereof,
                  results from such a claim (or if Digital reasonably believes
                  such an injunction is likely), Seller shall, at its expense
                  (and in addition to the Seller's other obligations,
                  hereunder), and as Digital requests:  obtain for Digital
                  and/or Customers or Digital Partners the right to continue
                  using, selling, leasing, licensing, or otherwise istributing
                  the Products, or replace or modify such Products so they
                  become noninfringing but functionally equivalent.
<PAGE>


         28.1.3.  Seller making  greater  service  commitments  to its Customers
                  then are set forth in the Gold Key Program.


         28.1.4.  The acts, errors,  omissions, or negligence of Seller while on
                  the property of Digital or its Customers or Digital  Partners,
                  regardless of whether the loss,  damage,  or injury  resulting
                  for sale occurs after the Seller has left such property.


         28.1.5.  The  presence of any  equipment or tools used by Seller in the
                  performance of this  Agreement,  on the property of Digital or
                  its Customers or Digital Partners.


         28.1.6.  The use by Seller of Digital's equipment, tools, or facilities
                  whether or not any claims are based upon the  condition of the
                  foregoing  or  Digital's,  its agent's or  employee's  alleged
                  negligence in permitting its use.


         28.1.7.  Seller's obligations to any third Person.


         28.1.8.  Any  product   liability   claims   related  to  the  Products
                  including,  but not  limited  to,  personal  injury as well as
                  damage to real or personal  property arising out of the use or
                  sale of the Products,  and regardless of the theory upon which
                  the claim is based including,  but not limited to, negligence,
                  strict liability, and breach of warranty.


28.2.    Digital  acknowledges that Seller's  indemnification  obligations under
         Sections 28.1.2 and 28.1.8, solely as each relates to the NPB Products,
         shall apply to NPB Products sold following the first anniversary of the
         Closing Date,  provided that Seller's  indemnification  obligations for
         NPB  Products  shall  commence  immediately  for any claim that  arises
         because of any upgrade or  modification to the NPB Products made by, or
         at the direction of, Seller,  that would not have arisen in the absence
         of such upgrade or modification.


28.3.    Digital  shall  defend,  indemnify,  and  hold  Seller,  its  officers,
         directors,  agents, and employees harmless from and against any and all
         Damages which result from or arise out of:


         28.3.1.  Digital's breach of any obligation,  representation,  covenant
                  or warranty provided or required hereunder.


         28.3.2.  The acts, errors, omissions, or negligence of Digital while on
                  the  property of the Seller or its  Customers,  regardless  of
                  whether the loss,  damage, or injury resulting for sale occurs
                  after Digital has left such property; or


         28.3.3.  The presence of any  equipment or tools used by Digital in the
                  performance of this  Agreement,  on the property of the Seller
                  or its Customers.
<PAGE>


         28.3.4.  Digital making greater  Warranty  commitments to its Customers
                  than are authorized under this Agreement.


         28.3.5.  The use by Digital of Seller's equipment, tools, or facilities
                  whether or not any claims are based upon the  condition of the
                  foregoing  or  Seller's,  its  agent's or  employee's  alleged
                  negligence in permitting its use.


         28.3.6.  Digital's obligations to any third Person.





                                  29.. NOTICES


                  Any notice given under this Agreement shall be written or sent
by telex or  facsimile.  Written  notice  shall  be sent by  registered  mail or
certified  mail,  postage  prepaid,  return receipt  requested,  or by any other
overnight  delivery  service  which  delivers  to the noticed  destination,  and
provides  proof of delivery to the sender.  All notices shall be effective  when
first received at the following addresses:

If to Seller:                                If to Digital:

Cabletron Systems, Inc.                      Digital Equipment Corporation
36 Industrial Way                            111 Powdermill Road
Rochester, NH  03866                         Maynard, MA  01754
Attn:  David Kirkpatrick                     Attn:  Relationship Manager
Telecopy:  (613) 332-4004                    Telecopy:  (508) 841-3522

with a copy to:                              with copies to:

Ropes & Gray                                 Digital Equipment Corporation
One International Place                      111 Powdermill Road
Boston, Massachusetts 02110-2624             Maynard, MA  01754
Attn:  David A. Fine, Esq.                   Attn:  Gail Mann, Esq.
Telecopy:  (617) 951-7050                    Telecopy:  (508) 493-6049



<PAGE>



                               30.. FORCE MAJEURE



30.1.    Neither  party  shall be  liable  for  failure  to  perform  any of its
         obligations  under this Agreement during any period in which such party
         cannot perform due to fire,  flood, or other natural disaster or act of
         God,  war,  embargo,  riot,  or  the  intervention  of  any  government
         authority,  provided that the party so delayed immediately notifies the
         other party of such delay, and provided further that the party claiming
         the  benefit  of this  Section  shall use  reasonable  effort to resume
         performance.  In the event a party cannot perform  substantially all of
         its  obligations  under this  Agreement  because of such an event,  the
         other party may terminate this Agreement.





                                  31.. GENERAL



31.1.    The rights and remedies of the parties provided in this Agreement shall
         not be  exclusive  and are in addition to any other rights and remedies
         provided at law or in equity.


31.2.    This  Agreement  shall be binding  upon and inure to the benefit of the
         successors and permitted  assigns of the parties hereto.  Neither party
         may assign or otherwise  transfer  this  Agreement  without the written
         consent of the other party,  and such consent shall not be unreasonably
         withheld;  however either party may assign this  Agreement  without the
         consent  of the  other  party  in  connection  with  the sale of all or
         substantially all of its assets, whether by asset purchase,  merger, or
         otherwise.


31.3.    Subject to the  non-compete  provisions set forth in the Asset Purchase
         Agreement,  nothing  will be deemed to limit or restrict  Digital  from
         entering into  agreements  with any other person  covering  services or
         products similar to the Products or Services,  or from offering similar
         product or services itself.


31.4.    The parties are independent contractors,  and nothing in this Agreement
         shall be construed as making  either party the agent,  joint  venturer,
         partner  or  employee  of the  other.  Neither  party  shall  make  any
         representation  or warranty on behalf of the other,  including  but not
         limited to any  representation  or  warranty  concerning  the  quality,
         performance or other  characteristics of the Products or Services other
         than those which are consistent in all respects with, and do not expand
         the scope of, the  warranties  set forth in this  Agreement or the Gold
         Key Program.

<PAGE>

31.5.    If any provision of this Agreement is held illegal or  unenforceable by
         any court of  competent  jurisdiction,  the parties  shall meet and use
         reasonable  efforts to amend this Agreement with a provision that meets
         the intent of the parties.


31.6.    This  Agreement  shall be governed by and construed in accordance  with
         the laws of the Commonwealth of  Massachusetts,  without regard for its
         principles  of  conflicts  of law.  The parties  hereby  consent to the
         jurisdiction of the courts of the  Commonwealth of Massachusetts or the
         United States Federal  District Court for the District of Massachusetts
         for  the  purpose  of any  action  or  proceeding  brought  by  them in
         connection with this Agreement.


31.7.    Digital  and  Seller  agree to comply  with U.S.  laws and  regulations
         governing the export of technology  and products,  including the Export
         Administration Act of 1979, as amended, any successor legislation,  and
         the  Export  Administration  Regulations  issued by the  Department  of
         Commerce, Bureau of Export Administration.  Digital and Seller agree to
         cooperate with each other,  including,  without  limitation,  providing
         required  documentation  and  information,   in  order  to  obtain  the
         necessary  government  authorizations prior to any export of technology
         or Products under this Agreement.


31.8.    The failure of either party to enforce,  in any one or more  instances,
         any of the terms or conditions of this Agreement shall not be construed
         as a waiver of the future performance of any such term or condition.


31.9.    This Agreement and all Schedules and any addenda hereto,  together with
         the Asset Purchase Agreement, (i) represent the entire agreement of the
         parties regarding the subject matter hereof;  (ii) supersedes all prior
         oral and  written  understandings  and  agreements  between the parties
         concerning the subject matter hereof;  and (iii) may not be modified or
         amended  except in a writing  signed by the  executive  officers of the
         parties.



<PAGE>



DIGITAL EQUIPMENT CORPORATION                       SELLER

/s/ Harold D. Copperman                             /s/ Donald B. Reed
Authorized Signature                                Authorized Signature

Harold D. Copperman                                 Donald B. Reed
Senior Vice President and General Manager           President
Products Division
Name and Title                                      Name and Title

November 24, 1997                                   November 24, 1997
Date                                                Date



<PAGE>
EXHIBIT 10.1

                             CABLETRON SYSTEMS, INC.
                               DISCLOSURE SCHEDULE
INDEX

         Schedule 1.56 - Shared Resellers

         Schedule 3.1 - Product Road Map Outline

         Schedule 6.1 - Quality Assurance Guidelines

         Schedule 8.1.1 - Territories in Which Digital Will Not Perform Warranty
                          Services

         Schedule 8.2.1 - Seller Warranty Services Territories to be Provided by
                          Digital

         Schedule 8.3 - Gold Key Program

         Schedule 8.10 - Warranty Services and Descriptions

         Schedule 9.1.1 - Trademark License and Quality Requirements

            Appendix 1 - The Digital Brand

            Appendix 2 - DEC Formative Marks

            Appendix 3 - Digital Logo Reproduction Requirements

            Appendix 4 - Eligibility for Digital Branding Criteria

            Appendix 5 - Digital Brand Relationship Logo Usage Requirements

            Appendix 6 - Usage Criteria for the DEC Formative Marks

            Appendix 7 - Relationship Logo

         Schedule 9.6 - Current Cabletron Products to be Branded with the
                        Digital Marks

         Schedule 9.8 - Digital's Requirements for Current Use of the Digital
                        Marks

         Schedule 9.9.5 - Business Card Drawing
<PAGE>

         Schedule 10.4 - Europe and U.S. Accreditation Guidelines

         Schedule 11.1 - Documentation Plan

         Schedule 14.1 - Escalation and Prioritization Guidelines

         Schedule 14.3 - Contract Services Delivery Model

         Schedule 15.3 - Relationship Director Responsibilities

            Appendix 1 - Digital Networks Program Office

         Schedule 20.2.1 - Preferred Service Provider Marketing Plan

         Schedule 27.2 - Legal Compliance Schedule




<TABLE>
<CAPTION>


                                 EXHIBIT 11.1
                   CABLETRON SYSTEMS, INC. AND SUBSIDIARIES
               STATEMENT RE: COMPUTATION OF PER SHARE EARNINGS
                 For periods ended November 30, 1997 and 1996

             (in thousands of dollars, except per share amounts)


                                                                (unaudited)

                                                Three Months Ended      Nine Months Ended
                                                    November 30,         November 30,

                                                   1997       1996        1997       1996
                                                   ----       ----        ----       ----
Net Income Per Common Share - (non-dilutive)
<S>                                             <C>        <C>        <C>        <C>  
Net income ..................................   $ 19,898   $ 67,742   $136,309   $161,789
                                                ========   ========   ========   ========
Weighted average common shares outstanding ..    157,986    155,299    157,527    154,968
                                                ========   ========   ========   ========
Reported net income per common share ........   $   0.13   $   0.44   $   0.87   $   1.04
                                                ========   ========   ========   ========


Net Income Per Common Share - (full dilution)

Net income ..................................   $ 19,898   $ 67,742   $136,309   $161,789
                                                ========   ========   ========   ========
Weighted average common shares outstanding ..    157,986    155,299    157,527    154,968
Add net additional common shares upon
exercise of common stock options ............      1,889      3,414      2,379      4,921
                                                --------   --------   --------   --------
Adjusted average common shares outstanding ..    159,875    158,713    159,906    159,889
                                                ========   ========   ========   ========
Net income per common share - (full
 dilution) ..................................   $   0.12   $   0.43   $   0.85   $   1.01
                                                ========   ========   ========   ========
</TABLE>


<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     This schedule contains summary financial information extrated from the 
Consolidated Balance Bheet, Consolidated Statement of Operations and
Consolidated statement of Cash Flows included in the Company's Form 10-Q for
the period ending November 30, 1997, and is qualified in its entirety by 
reference to such financial statements.
</LEGEND>
<CIK>                         0000846909
<NAME>                        Cabletron Systems, Inc.
<MULTIPLIER>                                   1,000
<CURRENCY>                                     U.S. Dollars
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                              FEB-28-1998
<PERIOD-START>                                 MAR-01-1997
<PERIOD-END>                                   NOV-30-1997
<EXCHANGE-RATE>                                1.00
<CASH>                                         206,926
<SECURITIES>                                   214,680
<RECEIVABLES>                                  298,672
<ALLOWANCES>                                   16,530
<INVENTORY>                                    280,021
<CURRENT-ASSETS>                               1,095,512
<PP&E>                                         410,148
<DEPRECIATION>                                 198,125
<TOTAL-ASSETS>                                 1,486,844
<CURRENT-LIABILITIES>                          243,615
<BONDS>                                        0
                          0
                                    0
<COMMON>                                       1,581
<OTHER-SE>                                     1,238,649
<TOTAL-LIABILITY-AND-EQUITY>                   1,486,844
<SALES>                                        1,065,808
<TOTAL-REVENUES>                               1,065,808
<CGS>                                          476,867
<TOTAL-COSTS>                                  476,867
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                                206,799
<INCOME-TAX>                                   70,490
<INCOME-CONTINUING>                            136,309
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   136,309
<EPS-PRIMARY>                                  0.87
<EPS-DILUTED>                                  0.85
        


</TABLE>


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