CABLETRON SYSTEMS INC
10-Q, EX-2.5, 2001-01-16
COMPUTER COMMUNICATIONS EQUIPMENT
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                                                                     Exhibit 2.5
                                                                     -----------

                AMENDED AND RESTATED ASSET CONTRIBUTION AGREEMENT


         THIS AMENDED AND RESTATED ASSET CONTRIBUTION AGREEMENT (this
"Agreement") is entered into and is effective as of June 3, 2000 (the "Effective
 ---------                                                             ---------
Date") by and between CABLETRON SYSTEMS, INC., a Delaware corporation ("CSI"),
----                                                                    ---
and RIVERSTONE NETWORKS, INC., a Delaware corporation and a wholly owned
subsidiary of CSI (the "Company").
                        -------

                                   RECITALS

         WHEREAS, the parties desire to enter into this Agreement in order to
cause the transfer of certain assets related to the Company Business (as defined
herein) to the Company and the assumption by the Company of certain liabilities
including those related to the Company Business on the Transformation Date (as
defined herein), giving effect to such transfer and assumption as of the
Effective Date;

         WHEREAS, CSI and the Company are entering into this Agreement pursuant
to that certain Transformation Agreement (the "Transformation Agreement") dated
                                               ------------------------
as of the date hereof by and among CSI, the Company and the other Newcos (as
defined herein);

         WHEREAS, CSI and the Company desire such transfer of assets and
liabilities to qualify as a tax free contribution under Section 351 of the
Internal Revenue Code of 1986, as amended; and

         WHEREAS, CSI and the Company desire to amend and restate this Agreement
as of the Effective Date to correct certain mutual mistakes of the Parties and
to clarify their rights and obligations under this Agreement;

         NOW, THEREFORE, in consideration of the foregoing and the mutual
agreements, provisions and covenants contained herein, and for other good and
valuable consideration, the receipt and legal sufficiency whereof are hereby
acknowledged, the parties hereto further agree as follows:

1.       Definitions.  For the purposes of this Agreement, the following terms
         -----------
         shall have the following meanings:

         1.1.     "Action" shall mean any claim, action, cause of action or suit
                   ------
                   by or before any Governmental Authority.

         1.2.     "Agreement" has the meaning assigned to such term in the
                   ---------
                  preamble.

                                       1
<PAGE>

         1.3.     "Ancillary Agreements" has the meaning assigned to such term
                   --------------------
                  in the Transformation Agreement.

         1.4.     "Aprisma" means Aprisma Management Technologies, Inc.
                   -------

         1.5.     "Assignment and Assumption Agreement" has the meaning assigned
                   -----------------------------------
                  to such term in Section 6.3.

         1.6.     "Assumed Liabilities" has the meaning assigned to such term in
                   -------------------
                  Section 4.

         1.7.     "Bill of Sale" has the meaning assigned to such term in
                   ------------
                  Section 6.3.

         1.8.     "Closing" has the meaning assigned to such term in the
                   -------
                  Transformation Agreement.

         1.9.     "Company" has the meaning assigned to such term in the
                   -------
                  preamble.

         1.10.    "Company Business" means the business described in Exhibit A.
                   ----------------

         1.11.    "Company Transferred Subsidiaries" means each of the
                   --------------------------------
                  subsidiaries of CSI listed on Schedule 2.3 hereto and each
                  direct and indirect subsidiary of such entities.

         1.12.    "Contracts" means any contract, agreement, lease, license,
                   ---------
                  sales order, purchase order, instrument or other commitment.

         1.13.    "Contributed Assets" has the meaning assigned to such term in
                   ------------------
                  Section 2.

         1.14.    "Contributed Contracts" has the meaning assigned to such term
                   ---------------------
                  in Section 2.9.

         1.15.    "Contributed Intellectual Property" means, collectively,
                   ---------------------------------
                  Contributed Registered Intellectual Property, Contributed
                  Non-Registered Intellectual Property, and Contributed Third
                  Party Tools.

         1.16.    "Contributed Non-Registered Intellectual Property" has the
                   ------------------------------------------------
                  meaning assigned to such term in Section 2.7.1.

         1.17.    "Contributed Registered Intellectual Property" has the meaning
                   --------------------------------------------
                  assigned to such term in Section 2.8.1.

         1.18.    "Contributed Third Party Tools" has the meaning assigned to
                   -----------------------------
                  such term in Section 2.6.

         1.19.    "Contribution Agreements" has the meaning assigned to such
                   -----------------------
                  term in the Transformation Agreement.

                                       2
<PAGE>

         1.20.    "CSI" has the meaning assigned to such term in the preamble.
                   ---

         1.21.    "Effective Date" has the meaning assigned to such term in the
                   --------------
                  preamble

         1.22.    "Enterasys" means Enterasys Networks, Inc.
                   ---------

         1.23.    "Enterasys Contribution Agreement" has the meaning assigned to
                   --------------------------------
                   such term in the Transformation Agreement.

         1.24.    "Excluded Assets" has the meaning assigned to such term in
                   ---------------
                  Section 3.

         1.25.    "Excluded Liabilities" has the meaning assigned to such term
                   --------------------
                  in Section 5.

         1.26.    "GNTS" means GlobalNetwork Technology Services, Inc.
                   ----

         1.27.    "Governmental Authority" means any domestic or foreign
                   ----------------------
                  federal, state or local government, regulatory or
                  administrative agency or court.

         1.28.    "Initial Intercompany Amount" has the meaning assigned to such
                   ---------------------------
                   term in Section 8.5.

         1.29.    "Intellectual Property" means any or all of the following and
                   ---------------------
                  all rights in, arising out of, or associated therewith: (i)
                  all United States and foreign patents and applications
                  therefor and all reissues, divisions, renewals, extensions,
                  provisionals, continuations and continuations-in-part thereof;
                  (ii) all inventions (whether patentable or not), invention
                  disclosures, improvements, trade secrets, proprietary
                  information, know how, technology, technical data and customer
                  lists; (iii) all copyrights, copyright registrations and
                  applications therefor and all other rights corresponding
                  thereto throughout the world; (iv) all semiconductor and
                  semiconductor circuit designs; (v) all rights to all mask
                  works and reticles, mask work registrations and applications
                  therefor; (vi) all industrial designs and any registrations
                  and applications therefor throughout the world; (vii) all
                  trade names, logos, common law trademarks and service marks,
                  trademark and service mark registrations and applications
                  therefor and all goodwill associated therewith throughout the
                  world; (viii) all databases and data collections and all
                  rights therein throughout the world; (ix) all computer
                  software including all source code, object code, firmware,
                  development tools, files, records and data, all media on which
                  any of the foregoing is recorded; (x) all Web addresses, sites
                  and domain names; (xi) any similar, corresponding or
                  equivalent rights to any of the foregoing; and (xii) all
                  documentation related to any of the foregoing.

         1.30.    "Intercompany Account" has the meaning assigned to such term
                   --------------------
                  in Section 2.4.2.

                                       3
<PAGE>

         1.31.    "Intercompany Amount" shall mean an amount, which may be
                   -------------------
                  positive or negative, equal to (i) the Initial Intercompany
                  Amount plus (ii) the net amount (which amount may be negative)
                         ----
                  of any cash received by CSI with respect to the Company
                  Business during the period from June 3, 2000 through the
                  Transformation Date minus any cash spent by CSI with respect
                  to the Company Business during the period from June 3, 2000
                  through the Transformation Date minus (iii) any obligations in
                                                  -----
                  respect of accounts payable and other current liabilities
                  incurred by CSI with respect to the Company Business during
                  the period from June 3, 2000 through the Transformation Date
                  not assumed by the Company pursuant to this Agreement.

         1.32.    "Inventory" means inventories, raw materials, supplies,
                   ---------
                  manufactured and purchased parts, works in progress and
                  finished goods.

         1.33.    "June 3 Balance Sheet" has the meaning assigned to such term
                   --------------------
                  in Section 8.5.

         1.34.    "June 3 Net Working Capital" has the meaning assigned to such
                   --------------------------
                   term in Section 8.5.

         1.35.    "June 3 Target Net Working Capital" means $60,000,000.
                   ---------------------------------

         1.36.    "Liability" means any debt, 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 directly or
                  consequential and whether due or to become due, including,
                  without limitation, any liability arising out of applicable
                  statutory, regulatory or common law, any contractual
                  obligation and any obligation arising out of tort.

         1.37.    "NEC ASIC Technology" means the Intellectual Property of CSI
                   -------------------
                  related to the ASIC family manufactured as of the Effective
                  Date by NEC, and certain related, incidental Intellectual
                  Property, including Intellectual Property that supports that
                  ASIC family and subsystems into which those ASICs are
                  incorporated.

         1.38.    "Net Working Capital" means (a) the total combined current
                   -------------------
                  assets of the Company minus (b) the total combined current
                  liabilities of the Company.


         1.39.    "Newcos" means, collectively, Aprisma, Enterasys, GNTS and
                   ------
                  the Company.

         1.40.    "Office Equipment" means furniture and other office equipment,
                   ----------------
                  including without limitation desks, tables, chairs, computers,
                  servers and related peripherals and copiers, but excluding
                  fixtures.

         1.41.    "Permits" means permits, licenses, authorizations and
                   -------
                  certifications issued by a Governmental Authority or other
                  standard setting organization.

                                       4
<PAGE>

         1.42.    "Product Segment" means networking products that (a) are
                   ---------------
                  designed specifically for use in high traffic, wide area
                  networks operated by telecommunications service providers and
                  (b) have advanced routing features, optical or other high
                  bandwidth interfaces and comply with standards that are a
                  prerequisite for deployment in telecommunications service
                  provider networks; provided, however, that such products do
                  not include products specifically designed for use in local
                  area network applications.

         1.43.    "Products" means the Products described on Exhibit A hereto.
                   --------

         1.44.    "Riverstone" means Riverstone Networks, Inc.
                   ----------

         1.45.    "Service Provider ASIC Technology" means the Service Provider
                   --------------------------------
                  ASIC Technology described in Exhibit A.

         1.46.    "Shared Services Agreement" means the one of the Shared
                   -------------------------
                  Services Agreements (as defined in the Transformation
                  Agreement) to which the Company is party.

         1.47.    "Shares" has the meaning assigned to such term in Section 6.1.
                   ------

         1.48.    "Statement" has the meaning assigned to such term in Section
                   ---------
                  8.5.

         1.49.    "Tax Sharing Agreement" has the meaning assigned to such term
                   ---------------------
                  in the Transformation Agreement.

         1.50.    "Third Party Tools" means rights with respect to third party
                   -----------------
                  computer applications, programs, other software, and other
                  design tools, including operating software, network software,
                  firmware, middleware, design software, systems documentation
                  and instructions.

         1.51.    "Transfer Impediment" has the meaning assigned to such term
                   -------------------
                  in Section 8.3.1.

         1.52.    "Transformation Agreement" has the meaning assigned to such
                   ------------------------
                  term in the recitals.

         1.53.    "Transformation Date" has the meaning assigned to such term
                   -------------------
                  in the Transformation Agreement.

         1.54.    "Vehicles" means automobiles, trucks, tractors, trailers and
                   --------
                  other vehicles.

2.       Contributed Assets. Upon and subject to the terms and conditions of
         ------------------
         this Agreement, and except as provided in Sections 3, 8.3 and 8.4
         hereof, effective as of the Transformation Date, CSI hereby agrees to
         assign, transfer, convey and deliver and to cause all of its

                                       5
<PAGE>

         direct and indirect subsidiaries other than the Company Transferred
         Subsidiaries to assign, transfer, convey and deliver to the Company (or
         the applicable subsidiary of the Company pursuant to Section 8.2
         hereof) all of their respective rights, title and interest in the
         following properties and assets (the "Contributed Assets") to the
                                               ------------------
         extent not already held by the Company:

         2.1.     Tangible Personal Property. All Office Equipment, Vehicles and
                  --------------------------
                  other tangible personal property which is used primarily by
                  the Company Business at the Transformation Date, in any event,
                  including without limitation such tangible personal property
                  specifically identified on Schedule 2.1 hereto, but excluding
                  fixtures.

         2.2.     Inventory.  Except as otherwise provided on Schedule 2.2
                  ---------
                  hereto, all inventory associated with the Products at the
                  Transformation Date.

         2.3.     Stock of CSI Subsidiaries. All of the capital stock of the
                  -------------------------
                  subsidiaries of CSI set forth on Schedule 2.3 hereto
                  (including, except as otherwise provided on Schedule 2.3, the
                  subsidiaries thereof).

         2.4.     Certain Current Assets.
                  ----------------------

                  2.4.1.   All accounts receivable (including intercompany
                           receivables) and prepaid expenses relating primarily
                           to the Company Business as of the Transformation
                           Date.

                  2.4.2.   An intercompany account (the "Intercompany Account")
                                                         --------------------
                           to be maintained and administered by CSI as provided
                           in the Shared Services Agreement with a balance equal
                           to the Intercompany Amount as finally determined
                           pursuant to Section 8.5, such Intercompany Account
                           representing an amount (as adjusted from time to time
                           for receivables collected and payables paid and other
                           appropriate credits and debits) which is payable on
                           demand by CSI to the Company in cash.



         2.5.     Permits, etc.  All rights under the Permits described on
                  -------------
                  Schedule 2.5 hereto.

         2.6.     Third Party Tools. All rights with respect to Third Party
                  -----------------
                  Tools used exclusively by the Company Business at the
                  Transformation Date, including without limitation those Third
                  Party Tools set forth on Schedule 2.6 hereof (collectively,
                                           ------------
                  the "Contributed Third Party Tools").
                       -----------------------------

         2.7.     Other Intellectual Property.
                  ---------------------------

                  2.7.1.   2.7.1    All rights in respect of all Intellectual
                           Property of CSI, other than registered Intellectual
                           Property and applications therefor, related to the

                                       6
<PAGE>

                           Products or otherwise used by the Company Business at
                           the Transformation Date (collectively, the
                           "Contributed Non-Registered Intellectual Property")
                            ------------------------------------------------
                           and any remedies against any and all past, present
                           and future infringements thereof and rights to
                           protection of interest therein; provided, however,
                           that such rights do not include any rights to the NEC
                           ASIC Technology.

         2.8.     Registered Intellectual Property.
                  --------------------------------

                  2.8.1.   All rights in respect of that registered Intellectual
                           Property set forth on Schedule 2.8 and any
                           applications therefor (the "Contributed Registered
                                                       ----------------------
                           Intellectual Property") and any remedies against any
                           ---------------------
                           and all past, present and future infringements
                           thereof and rights to protection of interest therein.

         2.9.     All Contracts. All rights, excluding rights in respect of
                  -------------
                  Intellectual Property and rights with respect to the use of
                  real property, under Contracts primarily used by the Company
                  Business at the Transformation Date, including without
                  limitation those Contracts set forth on Schedule 2.9
                                                          ------------
                  (collectively, the "Contributed Contracts").
                                      ---------------------

         2.10.    Claims. Claims and rights of recovery, rights of set-off and
                  ------
                  rights of recoupment which relate primarily to the Company
                  Business.

         2.11.    Lists.   All customer lists, distributor lists and supplier
                  -----
                  lists used primarily by the Company Business at the
                  Transformation Date.

         2.12.    Books and Records. All (i) accounting and other books and
                  -----------------
                  records, (ii) correspondence, (iii) reports, (iv) studies, and
                  (v) documents and other business records and files used
                  primarily by the Company Business at the Transformation Date.

         2.13.    Tax Attributes. (i) Tax attributes with respect to, and the
                  --------------
                  overpayment of, property taxes, sales and use taxes and
                  franchise taxes which relate primarily to the Company Business
                  and (ii) to the extent provided in the Tax Sharing Agreement,
                  tax attributes with respect to, and the overpayment of, income
                  and payroll taxes which relate to the Company Business or are
                  otherwise allocated to the Company.

         2.14.    Other Assets. Any other assets that are allocated to the
                  ------------
                  Company pursuant to the Transformation Agreement.

         Notwithstanding the foregoing, the Contributed Assets do not include
         the Excluded Assets.

                                       7
<PAGE>

3.       Excluded Assets. Notwithstanding anything to the contrary in Section
         ---------------
         2, there shall be excluded from the Contributed Assets to be assigned,
         transferred, conveyed and delivered to the Company and its subsidiaries
         hereunder, the following assets, properties and rights (collectively,
         the "Excluded Assets"):
              ---------------

         3.1.     Other Newco Assets. Except for CSI's rights with respect to
                  ------------------
                  Intellectual Property jointly owned by Company and CSI, which
                  CSI will contribute to Enterasys as contemplated by Section
                  8.11, any assets to be transferred to a Newco (or its
                  subsidiaries) other than the Company pursuant to the
                  Contribution Agreement to which such other Newco is party.

                  The parties understand and acknowledge that, except for CSI's
                  rights with respect to Intellectual Property jointly owned by
                  Company and CSI, which CSI will contribute to Enterasys as
                  contemplated by Section 8.11, where an asset is specifically
                  identified in another Contribution Agreement (or the schedules
                  thereto) as an asset to be transferred to another Newco, such
                  asset is not primarily related to the Company Business and
                  shall be transferred to such other Newco and not the Company.

         3.2.     Real Property. Other than as expressly set forth in the Shared
                  -------------
                  Services Agreement all rights in respect of real property,
                  including without limitation all leases with respect to real
                  property, all improvements, fixtures and fittings on real
                  property, and easements, rights-of way, and other rights
                  appurtenant to real property.

         3.3.     Cash and Securities. Other than as expressly set forth in
                  -------------------
                  Section 2.3 and Section 2.4 hereof, all cash, cash equivalents
                  and securities of CSI (to the extent not held by a Company
                  Transferred Subsidiary).

         3.4.     Third Party Tools.  Any Third Party Tools used by a Newco
                  -----------------
                  other than the Company as of the Transformation Date,
                  including without limitation those Third Party Tools set forth
                  on Schedule 3.4.

         3.5.     Intellectual Property Rights.  Any rights in respect of
                  ----------------------------
                  Intellectual Property that is not Contributed Intellectual
                  Property, including without limitation any rights in respect
                  of registered Intellectual Property and applications therefor
                  that is not Contributed Registered Intellectual Property.

         3.6.     Confidentiality and Non-Competition Agreements.  Except as
                  ----------------------------------------------
                  otherwise provided in the Transformation Agreement, all rights
                  under confidentiality agreements, non-competition,
                  non-disclosure and other similar agreements with employees.

                                       8
<PAGE>

         3.7.     Assets Retained by CSI.  Any assets to be retained by CSI
                  ----------------------
                  pursuant to the Transformation Agreement.

4.       Assumption of Liabilities. On the terms and subject to the conditions
         -------------------------
         set forth herein, and except as provided in Sections 5, 8.3 and 8.4
         hereof, from and after the Closing, the Company will assume and satisfy
         or perform when due all Liabilities of CSI and its direct and indirect
         subsidiaries, to the extent not discharged prior to the Transformation
         Date, which relate primarily to the Company Business and/or the
         Contributed Assets (collectively, the "Assumed Liabilities") to the
                                                -------------------
         extent not already assumed by the Company, including without limitation
         the following Liabilities:

         4.1.     Intercompany Payables; Accrued Expenses.  All Liabilities as
                  ---------------------------------------
                  of the Transformation Date in respect of intercompany payables
                  and accrued expenses, including without limitation expenses in
                  respect of legal and accounting services, which relate
                  primarily to the Company Business.

         4.2.     Taxes. All Liabilities as of the Transformation Date in
                  -----
                  respect of unpaid taxes, including without limitation (i)
                  property taxes, sales and use taxes, and franchise taxes which
                  relate primarily to the Company Business and (ii) as provided
                  in the Tax Sharing Agreement, income and payroll taxes which
                  relate to the Company Business or are otherwise allocated to
                  the Company.

         4.3.     Contracts.  All Liabilities relating to or arising out of the
                  ---------
                  Contributed Contracts.

         4.4.     Products and Services.  All Liabilities relating to or arising
                  ---------------------
                  out of products manufactured or sold or services rendered by
                  the Company Business.

         4.5.     Actions.  All Liabilities relating primarily to the Company
                  -------
                  Business arising as a result of any Action or threatened
                  Action.

         4.6.     Non-compliance with Legal Requirements.  All Liabilities
                  --------------------------------------
                  relating primarily to the Company Business arising out of
                  noncompliance with any legal requirements.

         4.7.     Employee Liabilities.  All Liabilities with respect to
                  --------------------
                  employees which relate primarily to the Company Business.

         4.8.     Allocated Liabilities.  The Liabilities allocated to the
                  ---------------------
                  Company pursuant to the Transformation Agreement.

         Notwithstanding the foregoing, the Assumed Liabilities do not include
         the Excluded Liabilities.

                                       9
<PAGE>

5.       Excluded Liabilities.  Notwithstanding anything to the contrary in
         --------------------
         Section 4, there shall be excluded from the Assumed Liabilities to be
         assumed by the Company hereunder, the following Liabilities
         (collectively, the "Excluded Liabilities"):
                             --------------------

         5.1.     Accounts Payable.  All Liabilities in respect of accounts
                  ----------------
                  payable to third parties (not including intercompany payables)
                  and deposits held by CSI or its affiliates for the account of
                  third parties as of the Transformation Date which arise out of
                  the Company Business.

6.       Consideration And Closing.
         -------------------------

         6.1.     Consideration. As consideration for the transfer described in
                  -------------
                  Sections 2 through 5 hereof, the Company agrees to record such
                  transfer as a contribution of capital on behalf of CSI for
                  shares of a series of preferred stock of the Company (the
                  "Shares") as described on Exhibit B hereto.
                   ------

         6.2.     Closing.  The closing of the transactions contemplated by this
                  -------
                  Agreement shall be a part of the Closing described in the
                  Transformation Agreement and shall take place at the time and
                  place set forth in the Transformation Agreement; provided,
                  however, that certain circumstances, including regulatory
                  matters in various jurisdictions outside the United States,
                  may require the transfer of certain assets and the assumption
                  of certain Liabilities to occur in such other manner and at
                  such other time as provided in Sections 8.3 and 8.4 hereof.
                  Except as otherwise provided herein, in the Transformation
                  Agreement and the other Ancillary Agreements, the simultaneous
                  occurrence of the other transactions which are a part of the
                  Closing under the Transformation Agreement is a condition
                  precedent to the closing of the transactions contemplated
                  hereby.

         6.3.     Deliveries at Closing.  At the Closing, (i) CSI will execute
                  ---------------------
                  and deliver to the Company a Bill of Sale in substantially the
                  form attached hereto as Exhibit B-1 (the "Bill of Sale") and
                                                            ------------
                  an Assignment and Assumption Agreement in substantially the
                  form attached hereto as Exhibit B-2 (the "Assignment and
                                                            --------------
                  Assumption Agreement") and (ii) the Company will execute and
                  --------------------
                  deliver to CSI the Assignment and Assumption Agreement and
                  will deliver to CSI certificate(s) representing the Shares.

7.       Representations and Warranties.
         ------------------------------

         7.1.     Representations and Warranties of CSI.  CSI hereby represents
                  -------------------------------------
                  and warrants to the Company as follows:

                  7.1.1.   Organization and Good Standing. CSI is a corporation
                           ------------------------------
                           duly organized, validly existing and in good standing
                           under the laws of the jurisdiction of the State of
                           Delaware. CSI has full corporate power and authority
                           to

                                       10
<PAGE>

                           execute, deliver and perform this Agreement. The
                           execution, delivery and performance of this Agreement
                           by CSI has been duly authorized by all necessary
                           corporate and stockholder actions.

                  7.1.2.   Binding Effect. This Agreement has been duly executed
                           --------------
                           and delivered by CSI and, assuming the due execution
                           and delivery hereof by the Company, constitutes the
                           legal, valid and binding obligation of CSI,
                           enforceable against CSI in accordance with its terms.

         7.2.     Representations and Warranties of the Company.  The Company
                  ---------------------------------------------
                  hereby represents and warrants to CSI as follows:

                  7.2.1.   Organization. The Company is a corporation duly
                           ------------
                           organized, validly existing and in good standing
                           under the laws of the jurisdiction of the State of
                           Delaware. The Company has full corporate power and
                           authority to execute, deliver and perform this
                           Agreement. The execution, delivery and performance of
                           this Agreement by the Company has been duly
                           authorized by all necessary corporate and stockholder
                           actions.

                  7.2.2.   Binding Effects. This Agreement has been duly
                           ---------------
                           executed and delivered by the Company and, assuming
                           the due execution and delivery hereof by CSI,
                           constitutes the legal, valid and binding obligation
                           of the Company, enforceable against the Company in
                           accordance with its terms.

8.       Certain Agreements of the Parties.
         ---------------------------------

         8.1.     Contributed Assets.  The Contributed Assets will be assigned
                  ------------------
                  by CSI to the Company pursuant to this Agreement hereof on an
                  "AS IS" basis, without any representations or warranties
                  whatsoever, except as provided in Section 7.1 hereof. Without
                  limiting the generality of the foregoing, CSI DISCLAIMS ANY
                  AND ALL OTHER REPRESENTATIONS OR WARRANTIES, EXPRESS OR
                  IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                  OF MERCHANTABILITY, TITLE, NON-INFRINGEMENT AND FITNESS FOR A
                  PARTICULAR PURPOSE.

         8.2.     Certain Foreign Assets and Liabilities.  In the case of assets
                  --------------------------------------
                  (other than the stock of subsidiaries of CSI contributed
                  pursuant to Section 2.3) or Liabilities that are held by a
                  subsidiary of CSI organized in a jurisdiction located outside
                  of the United States that are to be transferred to or assumed
                  by the Company pursuant hereto, instead of the Company such
                  assets shall be transferred to and such Liabilities shall be
                  assumed by (i) the subsidiary of the Company organized in the
                  same jurisdiction as the entity from which the assets or
                  liabilities are being transferred, if the Company has such a
                  subsidiary or (ii) otherwise, the subsidiary

                                       11
<PAGE>

                  of the Company organized under the laws of the United Kingdom,
                  and the Company shall cause such subsidiary to accept such
                  transfers and assumptions.

         8.3.     Inability to Assign Assets.
                  --------------------------

                  8.3.1.  If and to the extent that the valid, complete and
                          perfected transfer to the Company of any Contributed
                          Asset would be a violation of applicable laws or
                          agreements or require any consent or governmental
                          approval in connection with the transactions
                          contemplated hereby that has not been obtained by the
                          Transformation Date (a "Transfer Impediment"), then,
                                                   -------------------
                          unless the parties shall otherwise determine, the
                          transfer or assignment to the Company of such
                          Contributed Asset shall be automatically deemed
                          deferred and any such purported transfer shall be null
                          and void until such time as all relevant Transfer
                          Impediments are removed or obtained, as applicable,
                          and CSI (or its applicable affiliate) shall not be
                          obligated to transfer such asset except as provided in
                          Section 8.3.2 below. Notwithstanding the foregoing,
                          such asset shall still be considered a Contributed
                          Asset for purposes of determining whether any
                          Liability is an Assumed Liability.

                  8.3.2.  If the transfer or assignment of any asset intended to
                          be transferred or assigned hereunder is not
                          consummated prior to or on the Transformation Date,
                          whether as a result the provisions of Section 8.3.1 or
                          for any other reason, then CSI (or its applicable
                          affiliate) shall hold such asset for the use and
                          benefit, insofar as reasonably possible and not in
                          violation of a Transfer Impediment, of the Company (at
                          the expense of the Company) and shall take such other
                          actions as may be reasonably requested by the Company
                          in order to place the Company, insofar as reasonably
                          possible and not in violation of a Transfer
                          Impediment, in the same position as if such asset had
                          been transferred as contemplated hereby and so that
                          all the benefits and burdens relating to such asset,
                          including possession, use, risk of loss, potential for
                          gain, and dominion, control and command over such
                          asset, are to inure from and after the Transformation
                          Date to the Company. If and when a Transfer Impediment
                          which caused the deferral of a transfer of any asset
                          pursuant to Section 8.3.1 is removed or obtained, as
                          applicable, the transfer of the applicable asset shall
                          be effected in accordance with the terms of this
                          Agreement.

                  8.3.3.  The parties shall cooperate and use reasonable
                          efforts, without the requirement to make any payment
                          or make a material concession, to remove or obtain, as
                          applicable, any Transfer Impediment which prohibits
                          the transfer or assignment of assets hereunder.

                                       12
<PAGE>

         8.4.     Inability to Assign Liabilities.  If the assignment of an
                  -------------------------------
                  Assumed Liability to the Company hereunder is prohibited by a
                  Transfer Impediment, CSI or the applicable CSI affiliate shall
                  continue to be bound by the relevant obligations and, unless
                  not permitted by law or the terms of the relevant obligation,
                  the Company shall, as agent or subcontractor for CSI or its
                  affiliate, pay, perform and discharge fully, or cause to be
                  paid, transferred or discharged all the obligations or other
                  liabilities of CSI or its affiliate, as the case may be,
                  thereunder. CSI shall, without further consideration, pay and
                  remit, or cause to be paid or remitted, to the Company
                  promptly all money, rights and other consideration received by
                  it in respect of such performance (unless any such
                  consideration is an Excluded Asset). If and when such Transfer
                  Impediment is removed or obtained, as applicable, or such
                  obligations shall otherwise become assignable, the transfer of
                  the applicable liability shall be effected in accordance with
                  the terms of this Agreement. The parties shall cooperate and
                  use reasonable efforts, without the requirement to make any
                  payment or make a material concession, to remove or obtain, as
                  applicable, any Transfer Impediment, which prohibits the
                  assignment of any Liability hereunder.

         8.5.     Preparation of Balance Sheets.  For the purposes of
                  -----------------------------
                  calculating the Intercompany Amount as of the Transformation
                  Date, as soon as practicable and in any event prior to the
                  Transformation Date, CSI shall prepare a pro forma balance
                  sheet of the Company as of June 3, 2000 (the "June 3 Balance
                                                                --------------
                  Sheet") which gives effect to the contribution of the
                  -----
                  Contributed Assets to the Company and the assumption of the
                  Assumed Liabilities by the Company pursuant to this Agreement
                  as if the Transformation Date were June 3, 2000; provided,
                                                                   --------
                  however, that for the purposes of the June 3 Balance Sheet the
                  -------
                  Intercompany Amount shall equal an amount (the "Initial
                                                                  -------
                  Intercompany Amount"), which may be positive or negative, such
                  -------------------
                  that the Net Working Capital as reflected on the June 3
                  Balance sheet equals the June 3 Target Net Working Capital. A
                  statement (the "Statement") prepared by CSI setting forth the
                                  ---------
                  calculation of the Initial Intercompany Amount shall accompany
                  the June 3 Balance Sheet. The June 3 Balance Sheet and the
                  Statement shall be final and binding on the parties.

         8.6.     Mistaken Assignments and Assumptions. There may exist (i)
                  ------------------------------------
                  assets that the parties discover were, contrary to the
                  agreements between the parties, by mistake or omission,
                  transferred to the Company or retained by CSI or (ii)
                  Liabilities that the parties discover were, contrary to the
                  agreements between the parties, by mistake or omission,
                  assumed by the Company or retained by CSI. The parties shall
                  cooperate in good faith to effect the transfer or re-transfer
                  of such assets, and/or the assumption or re-assumption of such
                  Liabilities, to or by the appropriate party. Each party shall
                  reimburse the other or make other financial adjustments or
                  other adjustments to remedy any mistakes or omissions relating
                  to any of the assets transferred hereby or any of the
                  Liabilities assumed hereby.

                                       13
<PAGE>

         8.7.     Further Assurances.  In furtherance of the assignment,
                  ------------------
                  transfer and conveyance of the Contributed Assets and the
                  assumption of the Assumed Liabilities set forth herein, CSI
                  shall, in addition to the Bill of Sale and the Assignment and
                  Assumption Agreement, execute and deliver, and shall cause its
                  subsidiaries to execute and deliver, such bills of sale, stock
                  powers, certificates of title, assignments of contracts and
                  intellectual property rights and other instruments of
                  transfer, conveyance and assignment as and to the extent
                  necessary to evidence the transfer, conveyance and assignment
                  of all the Contributed Assets to the Company and (ii) the
                  Company, in addition to the Assignment and Assumption
                  Agreement, shall execute and deliver, and shall cause its
                  subsidiaries to execute and deliver, to CSI and its
                  subsidiaries such assumptions of contracts and other
                  instruments of assumption as and to the extent necessary to
                  evidence the valid and effective assumption of the Assumed
                  Liabilities by the Company.

         8.8.     Compliance with Bulk Sales Laws.  The parties hereby waive
                  -------------------------------
                  compliance with the bulk sales law and any other similar laws
                  in any applicable jurisdiction in respect of the transactions
                  contemplated by this Agreement, including, without limitation,
                  any applicable state tax law that may require notification of
                  state taxing authorities and related actions in respect of
                  bulk sales of assets outside of the ordinary course of
                  business.

         8.9.     Access. The parties hereto will allow each other reasonable
                  ------
                  access to the books and records of one another relating to the
                  Contributed Assets and the Assumed Liabilities, and to
                  personnel having knowledge of the whereabouts and/or contents
                  thereof, for legitimate business reasons, such as the
                  preparation of tax returns or the defense of litigation. The
                  requesting party will hold in confidence all confidential
                  information identified as such by, and obtained from, the
                  disclosing party or any of its officers, agents,
                  representatives or employees.

         8.10.    Conflicting Agreements.  In the event of conflict between this
                  ----------------------
                  Agreement and the Transformation Agreement, the provisions of
                  the Transformation Agreement shall prevail.

         8.11.    NEC ASIC Technology.  The parties understand and acknowledge
                  -------------------
                  that: (i) they jointly developed Intellectual Property that
                  was incorporated into the NEC ASIC Technology; (ii) separating
                  the Intellectual Property in the NEC ASIC Technology is
                  impractical, as doing so would render the ASIC inoperative;
                  (iii) they each hold a one-half, undivided interest in the NEC
                  ASIC Technology; and (iv) as between the parties, Riverstone
                  retains and will continue to retain its interests in the NEC
                  ASIC Technology, and CSI will assign its interests in the NEC
                  ASIC Technology to Enterasys.

         8.12.    Service Provider ASIC Technology. The parties understand and
                  --------------------------------
                  acknowledge that Riverstone developed the Intellectual
                  Property in the Service Provider ASIC

                                       14
<PAGE>

                  Technology and that, as between the parties, Riverstone
                  retains and will continue to retain sole and exclusive
                  interest in the Service Provider ASIC Technology.

9.       Miscellaneous.
         -------------

         9.1.     Entire Agreement. This Agreement, the Transformation Agreement
                  ----------------
                  and the other Ancillary Agreements, including the Schedules
                  and Exhibits hereto and thereto, and the other documents
                  delivered hereunder and thereunder constitute the entire
                  agreement among the parties hereto pertaining to the subject
                  matter hereof and supersede all prior or contemporaneous
                  agreements, understandings, negotiations and discussions,
                  whether oral or written, of the parties with respect to such
                  subject matter.

         9.2.     Amendment or Modification.  Except as otherwise provided in
                  -------------------------
                  the Transformation Agreement, the parties hereto may not amend
                  or modify this Agreement except by a written instrument
                  executed by CSI and the Company.

         9.3.     Severability.  In the event that any provision hereof would,
                  ------------
                  under applicable law, be invalid or unenforceable in any
                  respect, such provision shall (to the extent permitted under
                  applicable law) be construed by modifying or limiting it so as
                  to be valid and enforceable to the maximum extent compatible
                  with, and possible under, applicable law. The provisions
                  hereof are severable, and in the event any provision hereof
                  should be held invalid or unenforceable in any respect, it
                  shall not invalidate, render unenforceable or otherwise affect
                  any other provision hereof.

         9.4.     Successors and Assigns.  All of the terms and provisions of
                  ----------------------
                  this Agreement shall be binding upon and shall inure to the
                  benefit of the parties hereto and their respective permitted
                  transferees and assigns (each of which transferees and assigns
                  shall be deemed to be a party hereto for all purposes hereof);
                  provided, however, that (i) other than as contemplated by
                  --------  -------
                  Section 8.2 hereof, no transfer or assignment by any party
                  hereto shall be permitted without the prior written consent of
                  the other party hereto and any such attempted transfer or
                  assignment without consent shall be null and void and (ii) no
                  transfer or assignment by any party shall relieve such party
                  of any of its obligations hereunder.

         9.5.     Notices.  Any notices or other communications required or
                  -------
                  permitted hereunder shall be sufficiently given if in writing
                  and delivered personally or sent by telecopier, Federal
                  Express, or registered or certified mail, postage prepaid,
                  addressed as follows:

                                       15
<PAGE>

                  If to CSI,
                       to it at:        Cabletron Systems, Inc.
                                        35 Industrial Way
                                        Building 36
                                        Rochester, NH 03867
                                        Attention:  Eric Jaeger and Chief
                                                    Financial Officer
                                        Telecopier No.: (603) 337-1518

                  with a copy to:       Ropes & Gray
                                        One International Place
                                        Boston, MA 02110
                                        Attention:  David A. Fine
                                        Telecopier No.: (617) 951-7050

                  If to the Company
                       to it at:        Riverstone Networks, Inc.
                                        5200 Great America Parkway
                                        Santa Clara, CA
                                        Attention:  President
                                        Telecopier No.: (408) 878-6501

                  with a copy to:       Ropes & Gray
                                        One International Place
                                        Boston, MA 02110
                                        Attention:  David  A. Fine
                                        Telecopier No.: (617) 951-7050

                  Unless otherwise specified herein, such notices or other
                  communications shall be deemed received (a) on the date
                  delivered, if delivered personally, (b) two Business Days
                  after being sent by Federal Express, if sent by Federal
                  Express, (c) one Business Day after being delivered, if
                  delivered by telecopier and (d) three Business Days after
                  being sent, if sent by registered or certified mail. Each of
                  the parties hereto shall be entitled to specify a different
                  address by giving notice as aforesaid to each of the other
                  parties hereto.

         9.6.     Interpretation.  Section and subsection headings are not to be
                  --------------
                  considered part of this Agreement, are included solely for
                  convenience, are not intended to be full or accurate
                  descriptions of the content thereof and shall not affect the
                  construction hereof. No rule of strict construction shall
                  apply to or be used against any party hereto.

         9.7.     Third Party Beneficiaries.  Nothing in this Agreement is
                  -------------------------
                  intended or shall be construed to entitle any person or entity
                  other than the parties and their respective

                                       16
<PAGE>

                  transferees and assigns permitted hereby to any claim, cause
                  of action, remedy or right of any kind.

         9.8.     Counterparts.  This Agreement may be executed in any number
                  ------------
                  of counterparts, each of which shall be deemed an original,
                  but all of which together shall constitute but one and the
                  same instrument.

         9.9.     Governing Law.  This Agreement shall be governed by and
                  -------------
                  construed in accordance with the domestic substantive laws of
                  the State of Delaware, without giving effect to any choice or
                  conflict of law provision or rule that would cause the
                  application of the laws of any other jurisdiction.

         [The remainder of this page has been intentionally left blank.]

                                       17
<PAGE>

     IN WITNESS WHEREOF, the undersigned have executed this instrument under
seal effective as of the date first written above.

                                  CABLETRON SYSTEMS, INC.

Dated: November 8, 2000                 By: /s/ Piyush Patel
                                            -------------------------------
                                            Name: Piyush Patel
                                            Title: President, CEO

                                  RIVERSTONE NETWORKS, INC.

Dated: November 8, 2000                 By: /s/ Romulus Pereira
                                            -------------------------------
                                            Name: Romulus Pereira
                                            Title: CEO

                                       18


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