XYLAN CORP
10-Q, 1997-08-14
TELEPHONE & TELEGRAPH APPARATUS
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<PAGE>
 
                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                                        
                             ______________________


                                   FORM 10-Q


(Mark One)

   [X]        QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF
                      THE SECURITIES EXCHANGE ACT OF 1934

                 For the quarterly period ended June 30, 1997

                                      OR

   [_]       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF
                      THE SECURITIES EXCHANGE ACT OF 1934
            FOR THE TRANSITION PERIOD FROM __________ TO __________



                         COMMISSION FILE NUMBER 0-27764

                         ______________________________


                               XYLAN CORPORATION
            (Exact name of registrant as specified in its charter)



                 California                        95-4433911
       -------------------------------         ------------------- 
       (State or other jurisdiction of          (I.R.S. Employer
        incorporation or organization)         Identification No.)



                            26707 WEST AGOURA ROAD
                          CALABASAS, CALIFORNIA 91302
                   (Address of principal executive offices)
                           TELEPHONE: (818) 880-3500
             (Registrant's telephone number, including area code)



Indicate by check mark whether the registrant: (1) has filed all reports
required to be filled by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding twelve 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 [_]

The number of shares outstanding of the registrant's Common Stock as of June 30,
1997, was 42,480,823.

                                       1
<PAGE>
 
                               XYLAN CORPORATION
                         QUARTERLY REPORT ON FORM 10-Q
                      FOR THE PERIOD ENDED JUNE 30, 1997
                                        

                                     INDEX
                                        
<TABLE> 
<CAPTION> 

                                                                            PAGE
                                                                            ----
<S>       <C>                                                               <C>
PART I    FINANCIAL INFORMATION

Item 1.   Financial Statements:

             Condensed Consolidated Balance Sheets -- June 30,
               1997 and December 31, 1996                                     3

             Condensed Consolidated Income Statements --
               Three Months Ended June 30, 1997, March 31,
               1997 and June 30, 1996                                         4

             Condensed Consolidated Income Statements --
               Six Months Ended June 30, 1997 and 1996                        5

             Condensed Consolidated Statements of Cash Flows --
               Six Months Ended June 30, 1997 and 1996                        6

             Notes to Condensed Consolidated Financial Statements             7
 
Item 2.   Management's Discussion and Analysis of Financial
             Condition and Results of Operations                             10

Item 3.   Quantitative and Qualitative Disclosures About
             Market Risks                                                   N/A


PART II   OTHER INFORMATION

Item 1.   Legal Proceedings                                                  24
 
Item 2.   Changes in Securities                                              24
 
Item 3.   Defaults upon Senior Securities                                    24
 
Item 4.   Submission of Matters to a Vote of Security Holders                24
 
Item 5.   Other Information                                                  25
 
Item 6.   Exhibits and Reports on Form 8-K                                   25
 
          Signature                                                          27
 
          Exhibit Index                                                      28
 
</TABLE>

                                       2
<PAGE>
 
                        PART I -- FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS


                               XYLAN CORPORATION
                     CONDENSED CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
                                        
<TABLE> 
<CAPTION> 

                                                           JUNE 30,    DECEMBER 31, 
                                                             1997          1996
                                                           --------    ------------
                                                          (UNAUDITED)
<S>                                                       <C>          <C> 
                     ASSETS

Current assets:
 
 Cash and cash equivalents...............................   $ 62,463     $ 62,483
 Short-term investments..................................     34,346       50,498
 Accounts receivable, net................................     38,910       26,956
 Inventories.............................................     15,300       11,578
 Deferred income taxes...................................      5,766        1,766
 Prepaid expenses and other current assets...............      3,158        2,247
                                                            --------     --------
  Total current assets...................................    159,943      155,528
                                                                      
Investments..............................................     42,075       27,785
Note receivable..........................................      6,000        6,000
Property and equipment, net..............................     18,869       16,665
Other assets.............................................      3,546        1,273
                                                            --------     --------
   Total assets..........................................   $230,433     $207,251
                                                            ========     ========
                                                                      
           LIABILITIES AND SHAREHOLDERS' EQUITY                       
                                                                      
Current liabilities:                                                  
 Accounts payable and accrued expenses...................   $ 23,322     $ 17,760
 Current installments of capital lease obligations.......        253          303
 Deferred revenue........................................      3,231        2,838
 Income taxes payable....................................        451           12
                                                            --------     --------
  Total current liabilities..............................     27,257       20,913
                                                                      
 Capital lease obligations, less current installments....         87          206
 Deferred revenue........................................      1,195          494
                                                            --------     --------
  Total liabilities......................................     28,539       21,613
                                                            --------     --------
                                                                      
Shareholders' equity:                                                 
 Common stock and additional paid-in capital.............    187,737      184,439
 Retained earnings.......................................     14,157        1,199
                                                            --------     --------
   Shareholders' equity..................................    201,894      185,638
                                                            --------     --------
  Total shareholders' equity.............................   $230,433     $207,251
                                                            ========     ========
</TABLE> 


  The accompanying notes are an integral part of these financial statements.

                                       3
<PAGE>
 
                               XYLAN CORPORATION
                   CONDENSED CONSOLIDATED INCOME STATEMENTS
                                  (UNAUDITED)
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE> 
<CAPTION> 
                                               THREE MONTHS ENDED
                                         ------------------------------
                                         JUNE 30,   MARCH 31,  JUNE 30,
                                           1997        1997      1996
                                         --------   ---------  --------
<S>                                      <C>        <C>        <C>

Revenue..............................    $45,122     $48,008    $28,187
Cost of revenue......................     20,255      20,663     13,225
                                         -------     -------    -------
        Gross profit.................     24,867      27,345     14,962
                                         -------     -------    -------
Operating expenses:
   Research and development..........      6,079       5,506      3,484
   Sales and marketing...............     13,925      12,621      7,039
   General and administrative........      1,601       1,577      1,081
                                         -------     -------    -------
Total operating expenses.............     21,605      19,704     11,604
                                         -------     -------    -------
        Operating income.............      3,262       7,641      3,358
Interest income, net.................      1,812       1,828      1,321
                                         -------     -------    -------
Income before income taxes...........      5,074       9,469      4,679
Income tax expense (benefit).........     (2,016)      3,601      1,778
                                         -------     -------    -------
   Net income........................    $ 7,090     $ 5,868    $ 2,901
                                         =======     =======    =======
Net income per share.................    $   .15     $   .13    $   .06
                                         =======     =======    =======
 
Weighted average common and common
    equivalent shares outstanding....     46,267      46,594     46,996
                                         =======     =======    =======
</TABLE>



  The accompanying notes are an integral part of these financial statements.

                                       4
<PAGE>
 
                               XYLAN CORPORATION
                   CONDENSED CONSOLIDATED INCOME STATEMENTS
                                  (UNAUDITED)
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE> 
<CAPTION> 
                                        
                                                      SIX MONTHS ENDED JUNE 30,
                                                      -------------------------
                                                           1997       1996
                                                         -------    -------
<S>                                                      <C>        <C>

Revenue..............................................    $93,130    $51,579
Cost of revenue......................................     40,918     24,048
                                                         -------    -------
        Gross profit.................................     52,212     27,531
                                                         -------    -------
Operating expenses:
   Research and development..........................     11,585      6,678
   Sales and marketing...............................     26,546     12,839
   General and administrative........................      3,178      2,070
                                                         -------    -------
Total operating expenses.............................     41,309     21,587
                                                         -------    -------
        Operating income.............................     10,903      5,944
Interest income, net.................................      3,640      1,498
                                                         -------    -------
Income before income taxes...........................     14,543      7,442
Income tax expense (benefit).........................      1,585      1,858
                                                         -------    -------
   Net income........................................    $12,958    $ 5,584
                                                         =======    =======
Net income per share.................................    $   .28    $   .12
                                                         =======    =======
Weighted average common and common
    equivalent shares outstanding....................     46,507     45,528
                                                         =======    =======
</TABLE>



   The accompanying notes are an integral part of these financial statements.

                                       5
<PAGE>
 
                               XYLAN CORPORATION
                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                  (UNAUDITED)
                                (IN THOUSANDS)
<TABLE> 
<CAPTION> 
                                                      SIX MONTHS ENDED JUNE 30,
                                                      -------------------------
                                                           1997        1996
                                                         --------    --------
<S>                                                      <C>         <C>

Cash flows from operating activities:
Net income...........................................    $ 12,958    $  5,584
Adjustments to reconcile net income to net cash
 provided by operating activities:
  Depreciation and amortization......................       3,326       1,298
  Deferred income taxes..............................      (4,000)         --
  Expense related to warrants........................         336          --
  Unearned compensation amortization.................         229         271
  Change in:
   Accounts receivable...............................     (11,954)     (1,580)
   Inventories.......................................      (3,722)     (4,506)
   Prepaid expenses and other current assets.........        (911)     (1,097)
   Other assets......................................      (2,273)        106
   Accounts payable and accrued expenses.............       5,562         153
   Deferred revenue..................................       1,094       1,832
   Income taxes payable..............................       1,524       1,778
                                                         --------    --------
    Net cash provided by operating activities........       2,169       3,839
                                                         --------    --------
 
 
Cash flows from investing activities:
 Purchases of property and equipment.................      (5,530)     (5,558)
 Note receivable.....................................          --      (6,000)
 Sales (purchases) of investments....................       1,862     (73,495)
                                                         --------    --------
    Net cash used in investing activities............      (3,668)    (85,053)
                                                         --------    --------
Cash flows from financing activities:
 Proceeds from issuances of common stock.............       1,648     143,894
 Principal payments under capital lease obligations..        (169)       (160)
                                                         --------    --------
   Net cash provided by financing activities.........       1,479     143,734
                                                         --------    --------
    Net increase (decrease) in cash and cash 
      equivalents....................................         (20)     62,520
Cash and cash equivalents at beginning of period.....      62,483       6,034
                                                         --------    --------
Cash and cash equivalents at end of period...........    $ 62,463    $ 68,554
                                                         ========    ========
 Supplemental disclosure of cash flow information:
    Cash paid during the period for interest.........    $     21    $     21
    Cash paid during the period for taxes............    $  4,061    $     --
                                                         ========    ========
 Supplemental disclosure of noncash investing and
   financing activities:
    Income tax benefit resulting from exercise of 
      employee stock options.........................    $  1,085    $  1,778
                                                         ========    ========
</TABLE>



   The accompanying notes are an integral part of these financial statements.

                                       6
<PAGE>
 
                               XYLAN CORPORATION
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (UNAUDITED)


                                        
NOTE 1.   Basis Of Presentation

  The accompanying unaudited consolidated financial statements have been
prepared in accordance with generally accepted accounting principles for interim
financial information and with the instructions to Form 10-Q and Article 10 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, these statements include
all adjustments, consisting of normal and recurring adjustments, considered
necessary for a fair presentation of results for such periods. The results of
operations for the three and six month periods ending June 30, 1997 are not
necessarily indicative of results which may be achieved for the full fiscal year
or for any future period. The unaudited consolidated interim financial
statements should be read in conjunction with the financial statements and notes
thereto contained in Xylan Corporation's ("Xylan" or the "Company") Form 10-K.


NOTE 2.   Investments

  Investments at June 30, 1997 and December 31, 1996 consist of corporate and
government debt securities.  In accordance with the provisions of Statement of
Financial Accounting Standards Board No. 115, "Accounting for Certain
Investments in Debt and Equity Securities," the Company classifies its
investments as held to maturity securities.  The market value of these
securities at June 30, 1997, approximated cost.


NOTE 3.   Inventories

  Inventories, primarily component parts, are stated at the lower of cost or
market, cost being determined using the first-in, first-out method.


NOTE 4.   Accounts Payable and Accrued Expenses

  Accounts payable and accrued expenses consist of the following:
<TABLE> 
<CAPTION> 
                                                        June 30,   December 31, 
                                                          1997         1996
                                                        --------   ------------
                                                      (Unaudited)
     <S>                                              <C>          <C>

     Accounts payable................................   $12,004      $ 9,336
     Accrued payroll and related costs...............     5,041        4,281
     Accrued warranty................................     1,829        1,535
     Other accrued expenses..........................     4,448        2,608
                                                        -------      -------
       Total accounts payable and accrued expenses...   $23,322      $17,760
                                                        =======      =======
</TABLE>

                                       7
<PAGE>
 
NOTE 5.   Shareholder's Equity

     The Company has a 1993 Stock Incentive Plan (the "1993 Plan"). Under the
1993 Plan, 8,000,000 shares of the Company's authorized but unissued common
stock are reserved for options or stock purchase grants. As of June 30, 1997,
the Company has issued 1,867,888 shares of common stock under the 1993 Plan and
options to purchase 5,534,853 shares of common stock are outstanding.  In
connection with the grant of stock options, for financial statement presentation
purposes, the Company has recorded unearned compensation, net of cancellations,
of $2,336,000 representing the difference between the grant price and the deemed
fair market value.  This amount will be recorded as compensation expense ratably
over the vesting period for each option. For the quarters ended June 30, 1997,
March 31, 1997 and June 30, 1996, the Company recorded $115,000, $114,000 and
$157,000 of compensation expense, respectively.

    The Company has a 1996 Stock Option Plan. Under the 1996 Stock Option Plan,
5,000,000 shares of the Company's authorized but unissued common stock are
reserved for option grants.  As of June 30, 1997 the Company has issued 1,800
shares of common stock under this plan and options to purchase 3,206,125 shares
of common stock are outstanding.

     The Company has a 1996 Directors' Stock Option Plan. Under the 1996
Directors' Stock Option Plan, 150,000 shares of the Company's authorized but
unissued common stock are reserved for option grants.  As of June 30, 1997 the
Company has not issued any shares of common stock under this plan and options to
purchase 45,000 shares of common stock are outstanding.

     The Company has a 1996 Employee Stock Purchase Plan, which reserves
1,500,000 shares of common stock for issuance under the plan. As of June 30,
1997, the Company issued 46,734 shares under this plan.

    In July 1996, the Company and IBM entered into an alliance in the field of
campus networking switching products.  The Company has committed to grant IBM
warrants to purchase up to 2,350,000 shares of Xylan common stock based on the
achievement of specific business goals.  The exercise price of the warrants will
be at a 25% premium over the Xylan closing stock price when earned.


NOTE 6.   Income Taxes

     For the three and six months ended June 30, 1997, the Company recorded an
effective tax rate of approximately 38% and a $4 million income tax benefit for
the recognition of deferred tax assets.  The realization of the deferred tax
assets resulted from the reversal of the valuation allowance based on
management's assessment that it is more likely than not that the net deferred
tax assets will be realized based on carryback potential, existing temporary
differences and expectations of future taxable income levels.  For the three
months ended March 31, 1997, and June 30, 1996, the Company recorded an
effective tax rate of 38%.  For the remainder of 1997, the Company expects to
record a 38% provision for income taxes, although such percentage may vary
depending on several factors, including the international component of the
Company's business.

     For the quarters ended June 30, 1997, March 31, 1997, and June 30, 1996 the
Company realized an income tax benefit of $485,000, $600,000 and $1.8 million,
respectively, for certain stock option transactions.  For the six months ended
June 30, 1997 and 1996 the income tax benefit for certain stock option
transactions was $1.1 million and $1.8 million, respectively.  This benefit is
used to reduce taxable income prior to the utilization of net operating loss
carryforwards, and results in a decrease in current income taxes payable and an
increase in additional paid-in capital.

                                       8
<PAGE>
 
   As of December 31, 1996, the Company had net operating loss carryforwards for
Federal income tax purposes of approximately $7.7 million, which are available
to offset future taxable income, if any, through 2010.  Additionally, the
Company had research and development tax credit carryforwards for Federal and
state income tax purposes of $936,000 and $421,000, respectively, which are
available to offset future income taxes, if any, through 2011.


NOTE 7.   Computation Of Net Income Per Share

  Net income per share has been computed using the weighted average number of
common and common equivalent shares outstanding using the treasury stock method,
as adjusted for the two-for-one common stock split, effective as of February 28,
1996, for all periods presented.  The difference between fully diluted and
primary net income per share is immaterial for all periods presented. Shares
used in the net income per share calculation are summarized as follows (in
thousands):
<TABLE> 
<CAPTION> 
                                                                Three Months Ended
                                                           ------------------------------
                                                           June 30,   March 31,  June 30,
                                                             1997        1997      1996
                                                           -------    ---------  -------
     <S>                                                   <C>        <C>        <C>
     Weighted average common stock outstanding..........   42,278       42,147   40,963
     Weighted average common stock equivalents..........    3,989        4,447    6,033
                                                           ------       ------   ------
      Shares used in net income per share calculation...   46,267       46,594   46,996
                                                           ======       ======   ======
</TABLE> 
<TABLE> 
<CAPTION> 
                                                                    Six Months Ended June 30,
                                                                    -------------------------
                                                                         1997     1996
                                                                        ------   ------
     <S>                                                                <C>      <C> 
     Weighted average common stock outstanding..........                42,274   39,350
     Weighted average common stock equivalents..........                 4,233    6,178
                                                                        ------   ------
      Shares used in net income per share calculation...                46,507   45,528
                                                                        ======   ======
</TABLE>


NOTE 8.   Segment Information

  For the quarter ended June 30, 1997, IBM and Alcatel accounted for 21% and
12%, respectively, of revenue.  For the quarter ended March 31, 1997, IBM
accounted for 26% of revenue.  For the quarter ended June 30, 1996, Hitachi
Computer Products and NTT PC Communications, Inc. accounted for 27% and 19%,
respectively, of revenue.

  For the six months ended June 30, 1997, IBM and Alcatel accounted for 23% and
11%, respectively, of revenue.  For the six months ended June 30, 1996, Hitachi
Computer Products and NTT PC Communications, Inc. accounted for 21% and 18%,
respectively, of revenue.

  Sales to customers outside of North America accounted for 54%, 55% and 65% of
the Company's revenue in the quarters ended June 30, 1997, March 31, 1997, and
June 30, 1996, respectively. Sales to customers outside of North America
accounted for 54% and 66% of the Company's revenue in the six months ended June
30, 1997 and 1996, respectively.  However, these percentages may understate
sales of the Company's products to international end users because certain of
the Company's U.S.-based OEM partners sell the Company's products abroad.

                                       9
<PAGE>
 
ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
          RESULTS OF OPERATIONS

   This quarterly report on Form 10-Q may consist of forward looking statements
that involve risks and uncertainties. These statements may differ materially
from actual future events or results.  Readers are referred to the "Factors
Affecting Future Results" section of this Management's Discussion and Analysis
of Financial Condition and Results of Operations which identify important risk
factors that could cause actual results to differ from those contained in the
forward looking statements.  The Company undertakes no obligation to update the
information, including the forward looking statements, in this Report on Form
10-Q.


Overview

  Xylan is a leading provider of high-bandwidth switching systems that enhance
the performance of existing local area networks ("LANs") and facilitate
migration to next generation networking technologies such as asynchronous
transfer mode ("ATM"). From inception (July 9, 1993) to December 31, 1994, the
Company was primarily engaged in product research and development and in the
development of systems and operations. The Company began commercial shipments of
its initial OmniSwitch products in January 1995.   Since then, revenue has
increased signifiantly on a yearly basis to an aggregate of $128.5 million in
fiscal year 1996 from $29.7 million in fiscal year 1995.  Revenues increased to
$45.1 million in the quarter ended June 30, 1997 from $28.2 million in the
quarter ended June 30, 1996.  The increase in yearly revenue reflects
substantial growth of the LAN switching market, the continued introduction by
the Company of additional features and enhancements to its OmniSwitch product
family and the introduction of the PizzaSwitch product in March 1996, all of
which expanded the portion of the market addressed by Xylan's Products.  The
increase in yearly revenue was also the result of continued market acceptance of
the Company's LAN switching products, and investment in sales and marketing
efforts, including significant expansion of the Company's domestic and
international product distribution network. The Company markets its products
worldwide through OEM partners, system integrators and its own sales force and
first achieved profitability in the fourth quarter of 1995.  As of June 30,
1997, the Company had retained earnings of $14.2 million.

  The Company intends to increase significantly its investments in research and
development, sales and marketing and related infrastructure.  Such increases
will be dependent on factors including the continued growth of the Company's
revenues and the rate thereof, success in hiring the appropriate personnel and
market acceptance of the Company's products.  Due to the anticipated increases
in the Company's operating expenses, the Company's operating results will be
materially and adversely affected if revenue does not increase.  Xylan's limited
operating history makes the prediction of future annual or quarterly operating
results difficult or impossible.  Although the Company has generally experienced
revenue growth since revenue was first recognized, such growth rates will not be
sustainable and are not indicative of future operating results.  There can be no
assurance that the Company will sustain profitability.


Results Of Operations

Revenue

  Revenue for the quarter ended June 30, 1997 was $45.1 million compared to
$48.0 million for the quarter ended March  31, 1997, a decrease of 6%. Revenue
for the quarter ended June 30, 1996 was $28.2 million. Comparing revenue for the
quarter ended June 30, 1997 to the quarter ended June 30, 1996, revenue
increased 60%.  Revenue for the six months ended June 30, 1997 was $93.1 million
compared to $51.6 million for the six months ended June 30, 1996.  The increases
in revenue were due to a number of factors, including, substantial growth of the
LAN switching market, continued introduction by the Company of additional
features and functions to its OmniSwitch product family, the introduction of the
PizzaSwitch product family, market acceptance of the Company's LAN switching
products, the addition of IBM in July 1996 and the Company's investment in sales
and marketing efforts.  The relative contribution 

                                       10
<PAGE>
 
of most of these factors cannot be quantified, and future changes in an
individual factor therefore cannot be used to predict future revenue growth.
While revenue increased from the same quarter of the preceding year, the
Company's revenue decreased from the immediately preceding quarter. The decrease
in sequential revenue was primarily due to lower than expected orders from a
large OEM customer, material availability for the Company's ATM switch product,
and lower than expected shipments of the Company's new Ethernet/Fast Ethernet
products.

   Under an agreement with IBM and the Company, IBM has the right to manufacture
certain Company products after a specified period of time and pay a royalty to
Xylan.  As of June 30, 1997, the Company has earned no royalties.  Product
revenue could be adversely impacted if IBM elects to manufacture the Company's
products.

   The Company markets its products worldwide through OEM partners, system
integrators and a direct sales force. The following table sets forth the
Company's revenue by sales channel and geographic region as a percentage of
total revenue:
<TABLE>
<CAPTION>
 
 
                                                    Three months ended
                                             --------------------------------
                                             June 30,    Mar. 31,    June 30,
                                               1997        1997        1996
                                             --------    --------    --------
               <S>                           <C>         <C>         <C>
 
               Channel:
                   OEM partners                  35%         43%         47%
                   System Integrators            40%         38%         48%
                   Direct Sales (1)              25%         19%          5%
                                                 ==          ==          ==
 
               Region(2):
                   North America                 46%         45%         35%
                   International                 54%         55%         65%
                                                 ==          ==          ==
 
<CAPTION> 
                                                         Six Months ended June 30,
                                                         -------------------------
                                                             1997        1996
                                                             ----        ----
               <S>                                           <C>         <C>
               Channel:
                   OEM partners                              39%         44%
                   System Integrators                        39%         51% 
                   Direct Sales (1)                          22%          5%
                                                             ==          ==
 
               Region(2):
                   North America                             46%         34%
                   International                             54%         66%
                                                             ==          ==
 
</TABLE>

(1) Direct sales also include sales to the government and carriers.

(2) These percentages may understate sales of the Company's products to
    international end users because certain of the Company's U.S.-based OEM
    partners sell the Company's products abroad.


    For the quarter ended June 30, 1997, IBM and Alcatel accounted for 21% and
12%, respectively, of revenue. For the quarter ended March 31, 1997, IBM
accounted for 26% of revenue.  For the quarter ended June 30, 1996, Hitachi
Computer Products and NTT PC Communications, Inc. accounted for 27% and 19%,
respectively, of revenue.

                                       11
<PAGE>
 
Gross Profit

  Gross margins were 55.1%, 57.0% and 53.1% for the quarters ended June 30,
1997, March 31, 1997 and June 30, 1996, respectively. Gross margins were 56.1%
and 53.4% for the six months ended June 30, 1997 and 1996, respectively. The
decline in gross margins from the quarter ended March 31, 1997, to the quarter
ended June 30, 1997, reflects higher costs associated with new product
introductions, a change in product mix and a decline in revenue. The increases
in gross margins when comparing the three and six months ended June 30, 1997, to
the respective periods of the prior year resulted from component cost reductions
due to increased manufacturing volume, the use of application specific
integrated circuits ("ASICs") and design improvements. The Company's gross
margins in the future will be affected by a number of factors, including
competitive market pricing and discount levels, product mix, manufacturing
volumes and fluctuations in component costs. After initial product introduction,
the Company's strategy is to seek to reduce component costs, particularly by
integrating newly developed ASICs into such products. In addition, the timing
and execution of new product introductions and ASICs may impact gross margins
and result in excess or obsolete inventories. The Company's gross margins may
also fluctuate due to the mix of distribution channels employed. The Company
expects to realize higher gross margins on direct sales than on sales through
its OEM partners and system integrators. The Company has entered into an
agreement with IBM and may in the future enter into additional OEM agreements,
which could adversely affect its gross margins.


Research And Development Expenses

  Research and development expenses were $6.1 million, $5.5 million and $3.5
million for the quarters ended June 30, 1997, March 31, 1997 and June 30, 1996,
respectively.  This represents an increase of 75% from the second quarter of
1996 to the second quarter of 1997 and an increase of 10% from the first quarter
of 1997 to the second quarter of 1997. Research and development expenses were
$11.6 million and $6.7 million for the six months ended June 30, 1997 and 1996,
respectively.  This represents an increase of 74%. These increases were
primarily due to the hiring of additional engineers and an increase in prototype
material costs for new product development.  As a percentage of revenue,
research and development expenses were 14%, 12% and 12% for the quarters ended
June 30, 1997, March 31, 1997 and June 30, 1996, respectively.  For the six
months ended June 30, 1997 and 1996, research and development expenses as a
percentage of revenues were 12% and 13%, respectively.  The increase of research
and development expenses as a percent of revenue from the quarters ended March
31, 1997 to June 30,  1997 was due to the increase in expenditures and the
decline in revenue.

  The market for the Company's products is characterized by frequent new product
introductions and rapidly changing technology and industry standards, any of
which can impact Xylan's existing product offerings.  As a result, the Company's
success will depend to a substantial degree upon its ability to develop and
introduce in a timely fashion new products and enhancements to its existing
products that meet changing customer requirements and emerging industry
standards.  Accordingly, the Company expects to continue to make substantial
investments in research and development and anticipates that research and
development spending will continue to increase throughout 1997.  To date, the
Company has not capitalized any development costs and does not anticipate
capitalizing any such costs in the foreseeable future.


Sales And Marketing Expenses

  Sales and marketing expenses were $13.9 million, $12.6 million and $7.0
million for the quarters ended June 30, 1997, March 31, 1997 and June 30, 1996,
respectively.  For the six months ended June 30, 

                                       12
<PAGE>
 
1997 and 1996, sales and marketing expenses were $26.5 million and $12.8
million, respectively. This represents an increase of 98% from the second
quarter of 1996 to the second quarter of 1997, an increase of 10% from the first
quarter of 1997 to the second quarter of 1997 and an increase of 107% from the
six months ended June 30, 1996 to the six months ended June 30, 1997. These
increases were primarily due to expenses related to the addition of direct sales
personnel throughout the United States, Europe and Asia, and advertising and
promotional campaigns in support of the Company's direct sales and system
integrator channels. Sales and marketing expenses for the three and six months
ended June 30, 1997 also increased from the respective periods of the prior year
due to increased commission expenses on higher revenues. As the Company
continues to expand its direct sales force, adding personnel and offices
worldwide, and to introduce new products and enhancements to its existing
products, it expects that sales and marketing expenses will continue to increase
in 1997 in absolute dollars.

  As a percentage of revenue, sales and marketing expenses were 31%, 26% and 25%
for the quarters ended June 30, 1997, March 31, 1997 and June 30, 1996,
respectively.  For the six months ended June 30, 1997 and 1996, sales and
marketing expenses as a percentage of revenues were 29% and 25%, respectively.
The increase of sales and marketing expenses as a percent of revenue when
comparing the three and six months ended June 30, 1997 to the same periods in
the prior year is due to the percentage increase in expenditures being greater 
than the percentage increase in revenue.


General And Administrative Expenses

  General and administrative expenses were $1.6 million, $1.6 million and $1.1
million for the quarters ended June 30, 1997, March 31, 1997 and June 30, 1996,
respectively. For the six months ended June 30, 1997 and 1996, general and
administrative expenses were $3.2 million and $2.1 million, respectively. As a
percentage of revenue, general and administrative expenses were 4%, 3% and 4%
for the quarters ended June 30, 1997, March 31, 1997 and June 30, 1996,
respectively. For the six months ended June 30, 1997 and 1996, general and
administrative expenses as a percentage of revenues were 3% and 4%,
respectively. As the Company continues to expand its direct sales force, add
personnel and offices worldwide, and introduce new products and enhancements to
its existing products, it expects that general and administrative expenses will
continue to increase in 1997 in absolute dollars.


Interest Income

  Interest income, net, was $1.8 million, $1.8 million and $1.3 million for the
quarters ended June 30, 1997, March 31, 1997 and June 30, 1996, respectively.
For the six months ended June 30, 1997 and 1996, interest income was $3.6
million and $1.5 million, respectively.  The increases from the three and six
months ended June 30, 1996 as compared to the respective periods of the current
year are the result of interest income earned on the net proceeds of $87.4
million and $56.2 million from the Company's initial public offering in March,
1996 and the Company's secondary public offering in May, 1996, respectively.


Provision For Income Taxes

  For the three and six months ended June 30, 1997, the Company recorded an
effective tax rate of approximately 38% and a $4 million income tax benefit for
the recognition of deferred tax assets.  The realization of the deferred tax
assets resulted from the reversal of the valuation allowance based on
management's assessment that it is more likely than not that the net deferred
tax assets will be realized based on carryback potential, existing temporary
differences and expectations of future taxable income levels.  For the three
months ended March 31, 1997, and June 30, 1996, the Company recorded an
effective tax rate of 38%.  For the remainder of 1997, the Company expects to
record a 38% provision for income taxes, although such percentage may vary
depending on several factors, including the international component of the
Company's business.

                                       13
<PAGE>
 
  For the quarters ended June 30, 1997, March 31, 1997, and June 30, 1996 the
Company realized an income tax benefit of $485,000, $600,000 and $1.8 million,
respectively, for certain stock option transactions.  For the six months ended
June 30, 1997 and 1996 the income tax benefit for certain stock option
transactions was $1.1 million and $1.8 million, respectively.  This benefit is
used to reduce taxable income prior to the utilization of net operating loss
carryforwards, and results in a decrease in current income taxes payable and an
increase in additional paid in capital.

  As of December 31, 1996, the Company had net operating loss carryforwards for
Federal income tax purposes of approximately $7,700,000, which are available to
offset future taxable income, if any, through 2010. Additionally, the Company
had research and development tax credit carryforwards for Federal and state
income tax purposes of $936,000 and $421,000, respectively, which are available
to offset future income taxes, if any, through 2011.


Liquidity And Capital Resources

  The Company's principal source of liquidity as of June 30, 1997, consisted
of $62 million in cash and cash equivalents, $34 million in short-term
investments and a $6 million bank credit facility. Additionally, the Company has
$42 million in long term instruments. For the six months ended June 30, 1997 and
1996 cash provided by operating activities was $2.2 million, and $3.8 million,
respectively. The Company believes that existing cash and investment balances
and cash flow expected to be generated from future operations, will be
sufficient to meet the Company's requirements for at least the next twelve
months.

  The Company's future capital requirements will depend on many factors,
including the rate of revenue growth, the timing and extent of spending to
support product development efforts and expansion of sales and marketing, the
timing of introductions of new products and enhancements to existing products,
and market acceptance of the Company's products.  There can be no assurance that
additional equity or debt financing, if required, will be available on
acceptable terms or at all.


Factors Affecting Future Results

   LIMITED OPERATING HISTORY; RECENT PROFITABILITY; UNCERTAIN FUTURE
PROFITABILITY. The Company was organized in July 1993 and began shipping its
first LAN switching products in volume in the first quarter of 1995. The
Company's initial products offered limited interfaces and, in September 1995,
the Company began offering LAN switching products. Accordingly, the Company has
only a limited operating history upon which an evaluation of the Company and its
prospects can be based. The Company has generally experienced revenue growth
since January 1995, and first achieved profitability in the fourth quarter of
1995.  Due to the Company's limited operating history, there can be no assurance
of revenue growth and profitability on a quarterly or annual basis in the
future.  In fiscal 1997, the Company intends to continue to increase
significantly its investments in research and development, sales and marketing
and related infrastructure. Any such increases will be highly dependent on
factors including the continued growth of the Company's revenue and the rate
thereof, success in hiring the appropriate personnel and market acceptance of
the Company's products.  Due to the anticipated increases in the Company's
operating expenses, the Company's operating results will be adversely affected
if revenue does not increase.  The Company's prospects must be considered in
light of the risks, expenses and difficulties frequently encountered by
companies in their early stage of development, particularly companies in rapidly
evolving markets.  To address these risks, the Company must, among other things,
successfully increase the scope of its operations, respond to competitive
developments, continue to attract, retain and motivate qualified 

                                       14
<PAGE>
 
personnel and continue to commercialize products incorporating advanced
technologies. There can be no assurance that the Company will be successful in
addressing such risks.

  FLUCTUATIONS IN OPERATING RESULTS. The Company's revenue and operating results
may fluctuate from quarter to quarter and from year to year due to a combination
of factors, including (i) the timing and amount of significant orders from the
Company's OEM partners and system integrators, (ii) the Company's success in
developing, introducing and shipping product enhancements, ASICs and new
products, (iii) the ability to obtain sufficient supplies of sole or limited
source components for the Company's products, (iv) the ability to attain and
maintain production volumes and quality levels for its products (including
ASICs), (v) the mix of distribution channels and products, (vi) new product
introductions by the Company's competitors, (vii) pricing actions by the Company
or its competitors, (viii) changes in material costs (ix) mix of products
manufactured or purchased by IBM and (x) general economic conditions. See
"-Dependence on OEM Partners and System Integrators; IBM; Customer
Concentration," "-Dependence on Sole and Limited Source Suppliers and
Availability of Components," "-Substantial Increase in Manufacturing Operations;
Dependence on Contract Manufacturing," "-Competition," "-Rapid Technological
Change; New Products and Evolving Markets," "-Uncertain Market Acceptance of the
Company's Products; Product Concentration" and "-Product Complexity".  For
example, the Company's revenue in the quarter ended June 30, 1997 declined as
compared to the immediately preceding quarter primarily due to lower than 
expected orders from a large OEM customer, material availability for the
Company's ATM switch product, and lower than expected shipments of the Company's
new Ethernet/Fast Ethernet products.

  The Company's revenue in any period is highly dependent upon the sales efforts
and success of Xylan's OEM partners (including IBM) and system integrators,
which are not within the control of the Company. The Company generally realizes
a higher gross margin on direct sales than on sales through its OEM partners and
system integrators.  Accordingly, if the Company's OEM partners and system
integrators were to account for an increased portion of the Company's revenue,
gross margins would decline.  In addition, if IBM elects to manufacture products
using technology licensed from the Company, the Company's product revenue and
product gross margin will be adversely affected. New products may have different
gross margins than existing products.  A significant portion of the Company's
expenses, such as rent, headcount and lease expenses, are relatively fixed in
advance, based in large part on the Company's forecasts of future revenue. If
revenues are below expectations in any given period, the adverse effect of a
shortfall in revenue on the Company's operating results may be magnified by the
Company's inability to adjust spending to compensate for such shortfall.  The
Company's backlog at the beginning of each quarter typically is not sufficient
to achieve expected revenue for that quarter. To achieve its revenue objectives,
the Company is dependent upon obtaining orders in a quarter for shipment in that
quarter.  In addition, due in part to the timing of product release dates,
purchase orders and product availability, significant volume shipments of
products have occurred and may continue to occur at the end of the Company's
fiscal quarter.  Failure to ship such products by the end of a quarter may
adversely affect the Company's operating results. Furthermore, the Company's
agreements with its customers typically provide that they may change delivery
schedules and cancel orders within specified timeframes without significant
penalty.  The Company's industry is characterized by short product life cycles
and declining prices of existing products, which requires continual improvement
of manufacturing efficiencies and introduction of new products and enhancements
to existing products to maintain gross margins.  Moreover, in response to
competitive pressures or to pursue new product or market opportunities, the
Company may take certain pricing or marketing actions that could materially and
adversely affect the Company's operating results.  For example, a reduction in
prices of the Company's products could result in lower revenue, an increase in
discounts offered to the Company's OEM partners or system integrators would
adversely affect the Company's operating margins, and a substantial targeted
marketing campaign could significantly increase marketing expense and result in
decreased profitability.  As a result of all of the foregoing, there can be no
assurance that the Company will be able to achieve or sustain profitability on a
quarterly or annual basis. In addition, the Company's operating results have and
may in the future be below the expectations of public market analysts and
investors. In such event, the price of the Company's Common Stock would likely
be materially and adversely affected.

  COMPETITION. The market for network switching products is intensely
competitive and subject to frequent product introductions with improved
price/performance characteristics, significant price reductions, rapid
technological change and continued emergence of new industry standards. Many

                                       15
<PAGE>
 
networking companies, including Bay Networks, Inc., Cabletron Systems, Inc.,
Cisco Systems, Inc., FORE Systems, Inc. and 3Com Corporation, have introduced,
or have announced their intention to develop, network switching products that
are or will be competitive with the Company's products. In addition, many of the
Company's large competitors offer customers a broader product line which
provides a more comprehensive networking solution than the Company currently
offers.  Recent consolidations in the industry have resulted in competitors that
may have broader product lines, greater access to capital or greater research
and development resources which could adversely affect the ability of the
Company to compete. Xylan expects that other companies will also enter markets
in which the Company competes. In addition to competition from providers of
network switching products, the Company expects to face competition from other
vendors in the networking market who may incorporate switching functionality
into their products or provide alternative network solutions.  Furthermore, the
Company's OEM partners may in the future develop competitive products and may
then decide to terminate their relationships with the Company.  In addition,
certain of the Company's OEMs may sell competitive products using the
Company's technology. Many of the Company's current and potential competitors
have longer operating histories and substantially greater financial, technical,
sales, marketing and other resources, as well as greater name recognition and a
larger installed customer base, than the Company. As a result, these competitors
may be able to devote greater resources to the development, promotion, sale and
support of their products than the Company. In addition, competitors with a
larger installed customer base may have a competitive advantage over the Company
when selling similar products or alternative networking solutions to such
customers. Increased competition could result in significant price competition,
reduced profit margins or loss of market share, any of which could have a
material adverse effect on the Company's business, operating results and
financial condition. There can be no assurance that the Company will be able to
compete successfully against either current or potential competitors in the
future. See "-Dependence on Proprietary Technology, Intellectual Property
Litigation."

  SUBSTANTIAL INCREASE IN MANUFACTURING OPERATIONS; DEPENDENCE ON CONTRACT
MANUFACTURING. As demand for the Company's products grow, the Company will
increase its flow of materials, contract manufacturing capacity and internal
test and quality functions to respond to such customer demand and to reduce its
order lead times. Any inability or delay in product flow would limit the
Company's revenue, could adversely affect the Company's competitive position and
could result in late fees or cancellation of orders under agreements with the
Company's OEM partners.  During 1996, the Company leased 40,000 square feet of
space, a portion of which is being used for manufacturing. Any interruption or
delay in the normal flow of production, or defaults or financial insolvency of
the contract manufacturer could have a material adverse effect on the Company's
business, operating results and financial condition. The Company may also
require additional manufacturing space and there can be no assurance that such
additional space, if required, will be available in a timely manner or on
commercially reasonable terms, if at all.

  Xylan's operational strategy relies on outsourcing of manufacturing. The
Company currently subcontracts component procurement and printed circuit board
assembly to a single company. The Company also subcontracts assembly of chasis
to a number of companies, each of which specialize in the particular services
provided. In connection with its operational strategy, the Company is seeking to
secure additional sources of supply, including additional contract
manufacturers. The Company has experienced in the past, and may in the future
experience, problems with its contract manufacturers, such as inferior quality,
insufficient quantities and late delivery of product. While such problems have
not resulted in any material liabilities from the Company to its customers or
end-users to date, there can be no assurance that such problems will not
generate material liabilities for the Company or adversely impact the Company's
relations with its customers and end-users in the future. During 1996, the
Company agreed to loan up to $10 million to its contract manufacturer that
performs circuit board assembly. The loan, which assists the contract
manufacturer to meet the Company's increasing production requirements, is non-
interest bearing, does not have a defined due date and is secured by raw
materials and electronic components purchased by the contract manufacturer. At
August 6, 1997, the note had an outstanding balance of $7.5 million. Also,
during 1996 and 1997, the Company guaranteed up to $5.0 million of such contract
manufacturer's debt for raw material and electronic component purchases. Any
additional loans or guaranties to the Company's contract manufacturer, or
defaults or financial insolvency of the contract manufacturer, could

                                       16
<PAGE>
 
have an adverse effect upon the Company's business, operating results and
financial condition. In addition, the Company may in the future experience
pricing pressure from its contract manufacturers. To date, the Company has had
only limited experience with the use of contract manufacturers. There can be no
assurance that the Company will effectively manage its contract manufacturers or
that these manufacturers will meet the Company's future requirements for timely
delivery of products of sufficient quality and quantity. The Company intends to
introduce a number of new products and product enhancements in 1997 and 1998,
which will require that the Company rapidly achieve volume production by
coordinating its efforts with those of its suppliers and contract manufacturers.
Certain of the Company's products in development will require contract
manufacturers to adopt or develop advanced manufacturing techniques, which could
inhibit volume manufacturing of those products. The inability of Xylan's
contract manufacturers to provide it with adequate supplies of high-quality
products on-time or the loss of any of the Company's contract manufacturers
could cause a delay in Xylan's ability to fulfill orders while the Company
identifies a replacement manufacturer and could have a material adverse effect
upon the Company's business, operating results and financial condition.

  DEPENDENCE ON SOLE AND LIMITED SOURCE SUPPLIERS AND AVAILABILITY OF
COMPONENTS. Several key components used in the manufacture of the Company's
products are currently purchased only from single or limited sources.  At
present, single-sourced components include ASICs, processors, selected
integrated circuits, programmable integrated circuits, cables and custom-tooled
sheet metal; and limited-sourced components include flash memories, dynamic
random access memories ("DRAMs"), and printed circuit boards.  The Company
generally does not have long-term agreements with any of these single or limited
sources of supply.  The Company is in the process of incorporating ASICs in many
of its products. As stated above, many of these ASICs are initially being
manufactured by a single source, LSI Logic Corporation in most cases, and
accordingly the risks of relying on sole sources is expected to increase. Any
interruption or delay in the supply of any of these components, or the inability
of the Company to procure these components from alternate sources at acceptable
prices and within a reasonable time, could have a material adverse effect upon
the Company's business, operating results and financial condition. Qualifying
additional suppliers is time consuming and expensive and the likelihood of
errors is greater with new suppliers. The Company uses a rolling six-month
forecast based on anticipated product orders to determine its general materials
and components requirements. Lead times for materials and components ordered by
the Company vary significantly, and depend on factors such as the specific
supplier, contract terms and demand for a component at a given time. If orders
do not match forecasts, the Company may have excess or inadequate inventory of
certain materials and components, which could have a material adverse effect on
the Company's financial condition. From time to time the Company has experienced
shortages and allocations of certain components, delays in filling orders while
waiting to obtain the necessary components and delays in prototyping of its
ASICs. Given current worldwide demand for integrated circuits and certain other
components used by the Company and the complexity and yield problems in
manufacturing such integrated circuits and components, such shortages
allocations and delays are likely to occur in the future and could have a
material adverse effect on the Company's business, operating results and
financial condition.


  DEPENDENCE ON OEM PARTNERS AND SYSTEM INTEGRATORS; IBM; CUSTOMER
CONCENTRATION. The Company pursues a sales and marketing strategy focused on
developing three channels of distribution for its products: worldwide OEM
partners, system integrators in North America and overseas and direct sales.
The Company has established OEM partnerships with leading communications and
networking companies, including IBM, and Alcatel N.V. ("Alcatel").  In November
1996, the Company entered into an OEM agreement with Samsung Electronics Company
Ltd. ("Samsung") and also signed a licensing agreement with Samsung under which
the Company will modify its OmniVision network management software to control
Samsung's ATM switches, in addition to Xylan's LAN switches.  Samsung will also
be combining Samsung's ATM switching technology, Xylan's LAN switching
technology and the new integrated network management system to provide a
complete solution to the needs of Samsung's customers.

  In the field of campus network switching products, IBM and Xylan are offering
the other company's campus switch products for resale. For the quarter ended
June 30, 1997, sales to IBM comprised 21% of the Company's revenue.  There is no
assurance that IBM will continue to purchase the Company's products. 

                                       17
<PAGE>
 
In addition, the Company has limited information as to the sell-through of its
products by IBM. There is no assurance that even if IBM does purchase such
products, that IBM will sell such products to its customers. Both companies have
the right to manufacture and sell certain of each other's campus switching
products in exchange for a royalty. As of June 30, 1997, no royalties have been
earned by either company. However, sales by IBM of IBM manufactured or other
campus switch products could have a material adverse effect on the Company's
product revenues. In addition, the parties have formed a joint development
organization to develop new products using certain of the other company's LAN
technology. Any reduction or delay in sales of the Company's products by IBM
could have a material adverse effect on the Company's business, financial
condition and results of operations.

  Although there is a large number of end-users of Xylan's products, the
Company's customer base is highly concentrated and a relatively small number of
customers have accounted for a significant portion of the Company's revenue to
date. The Company's OEM partners and system integrators account, and are
expected to continue to account, for a substantial portion of the Company's net
revenue. As a percentage of revenue, aggregate sales to OEM partners and system
integrators accounted for 35% and 40%, respectively, for the quarter ended June
30, 1997, and 47% and 48%, respectively, for the quarter ended June 30, 1996.
Each of the Company's OEM partners and system integrators can cease marketing
the Company's products with limited notice to Xylan and with little or no
penalty. In addition, the Company's agreements with its OEM partners and system
integrators generally provide for discounts based on expected or actual volumes
of products purchased or resold by the reseller in a given period and do not
require minimum purchases. Certain of these agreements provide manufacturing
rights and access to source code upon the occurrence of specified conditions or
defaults.

  Certain of the Company's OEM agreements provide for limited exclusivity.
Certain of the Company's OEM partners have developed and may continue to develop
competitive products and, if they do so, they may decide to terminate their
relationship with the Company. In addition, many of the Company's resellers
offer competitive products manufactured either by third parties or by
themselves. Furthermore, certain of the Company's OEM partners and system
integrators offer alternative networking solutions, designed by themselves or
third parties, or have pre-existing relationships with current or potential
competitors of the Company. There can be no assurance that the Company's OEM
partners and system integrators will give a high priority to the marketing of
the Company's products as compared to competitive products or alternative
networking solutions or that Xylan's OEM partners and system integrators will
continue to offer the Company's products. For example, in July 1997, IBM
announced that it had also formed an alliance with 3Com, a competitor of the
Company. In addition, Xylan's OEM partners and system integrators could sell
competitive products to the Company's existing customers, which could have a
material adverse effect on the Company's business, operating results and
financial condition. Any reduction or delay in sales of the Company's products
by its OEM partners and system integrators could have a material adverse effect
on the Company's business, operating results and financial condition. There can
be no assurance that the Company will retain its current OEM partners or system
integrators or that it will be able to recruit additional or replacement OEM
partners or system integrators. The loss of one or more of the Company's OEM
partners or system integrators could have a material adverse effect on the
Company's business, operating results and financial condition. The Company
generally realizes a higher gross margin on direct sales than on sales through
its OEM partners and system integrators. Accordingly, if the Company's OEM
partners and system integrators were to account for an increased portion of the
Company's revenue, its gross margin would decline.

  MANAGEMENT OF GROWTH. The Company's recent growth has placed a significant
strain on the Company's financial and management personnel and information
systems and controls. This growth has resulted in a continuing increase in the
level of responsibility for both existing and new management personnel. The
Company recently has implemented and continues to implement new and enhanced
financial and management information systems and controls and is training its
personnel to operate such systems. Any difficulty in the operation of such new
and enhanced systems or the training of personnel, or any disruptions in the
transition to such new or enhanced systems and controls, could adversely affect
the Company's ability to accurately forecast sales demand and calibrate
manufacturing to such demand, to calibrate purchasing levels, to accurately
record and control inventory levels, and to record and report 

                                       18
<PAGE>
 
financial and management information on a timely and accurate basis. Due to its
rapid growth the Company experienced each of these problems in the past. The
occurrence or recurrence of any of these events could have a material adverse
effect on the Company's business, financial condition and results of operations.

  RAPID TECHNOLOGICAL CHANGE; NEW PRODUCTS AND EVOLVING MARKETS. The market for
the Company's products is characterized by frequent new product introductions,
rapidly changing technology and continued emergence of new industry standards,
any of which could render Xylan's existing products obsolete.  The Company's
success will depend to a substantial degree upon its ability to develop and
introduce in a timely fashion new products and enhancements to its existing
products that meet changing customer requirements and emerging industry
standards.  The development of new, technologically advanced products is a
complex and uncertain process requiring high levels of innovation, as well as
the accurate anticipation of technological and market trends. There can be no
assurance that the Company will be able to identify, develop, manufacture,
market or support new or enhanced products successfully or on a timely basis,
that new Company products will gain market acceptance or that the Company will
be able to respond effectively to product announcements by competitors,
technological changes or emerging industry standards. In addition, the Company
has on occasion experienced delays in the introduction of new products and
product enhancements.  Such delays have, and any furture delays could have, a
material adverse effect on the Company's business, operating results and
financial condition.  Furthermore, from time to time, the Company may announce
new products or product enhancements, capabilities or technologies that have the
potential to replace or shorten the life cycle of the Company's existing product
offerings and that may cause customers to defer purchasing existing Company
products or cause resellers to return products to the Company.  The market for
LAN switching products is evolving and the Company believes its ability to
compete successfully in this market is dependent upon the continued
compatibility and interoperability of its products with products and
architectures offered by various vendors, including workstation and personal
computer architectures and computer and network operating systems.  There can be
no assurance that the Company will be able to effectively address the
compatibility and interoperability issues raised by technological changes or
evolving industry standards.

  A key element of the Company's strategy is the development of multiple ASICs
to increase system performance and reduce manufacturing costs, thereby enhancing
the price/performance of the Company's products.  However, ASICs are generally
complex and may contain undetected errors. Any failure to continue to introduce
new products or product enhancements and develop and incorporate ASICs
effectively and on a timely basis, customer delays in purchasing products in
anticipation of new product introductions or any inability of the Company to
respond effectively to product announcements by competitors, technological
changes or emerging industry standards could have a material adverse effect on
the Company's business, operating results and financial condition.

  UNCERTAIN MARKET ACCEPTANCE OF THE COMPANY'S PRODUCTS; PRODUCT CONCENTRATION.
The Company currently derives substantially all of its revenue from its
OmniSwitch and PizzaSwitch products and the Company expects that revenue from
these products will continue to account for a substantial portion of the
Company's revenue through 1997. Broad market acceptance of these products is,
therefore, critical to the Company's future success.  Factors that may affect
the market acceptance of the Company's products include market acceptance of
network switching products, the availability and price of competing products and
technologies and the success of the sales efforts of the Company and its OEM
partners and system integrators.  Moreover, the Company's operating history in
the network switching market and its resources are limited relative to those of
certain of its current and potential competitors.  The Company's future
performance will also depend in part on the successful development, introduction
and market acceptance of new and enhanced products.  Failure of the Company's
products to achieve market acceptance would have a material adverse effect on
the Company's business, operating results and financial condition.

  PRODUCT COMPLEXITY. Products as complex as those offered by the Company
frequently contain undetected software or hardware errors when first introduced
or as new versions are released. As is common among participants in the
Company's industry, the Company has experienced such errors in the past in
connection with product upgrades and new products.  Despite testing by the
Company and by 

                                       19
<PAGE>
 
current and potential customers, Xylan expects that such errors will be found
from time to time in new or enhanced products after commencement of commercial
shipments. The Company believes it has addressed these errors when they have
occurred through software and hardware revisions. However, the occurrence of
such errors could, and the inability to correct such errors would, result in the
delay or loss of market acceptance of the Company's products, additional
expense, diversion of engineering and other resources from the Company's product
development efforts and the loss of credibility with Xylan's OEM partners,
system integrators and end users, any of which would have a material adverse
effect on the Company's business, operating results and financial condition.

  DEPENDENCE ON PROPRIETARY TECHNOLOGY; INTELLECTUAL PROPERTY LITIGATION. The
Company's success and its ability to compete is dependent, in part, upon its
proprietary technology.  The Company does not hold any issued patents and
currently relies on a combination of contractual rights, trade secrets and
copyright laws to establish and protect its proprietary rights in its products.
There can be no assurance that the steps taken by the Company to protect its
intellectual property will be adequate to prevent misappropriation of its
technology or that the Company's competitors will not independently develop
technologies that are substantially equivalent or superior to the Company's
technology.  In the event that protective measures are not successful, the
Company's business, operating results and financial condition could be
materially and adversely affected.  In addition, the laws of some foreign
countries do not protect the Company's proprietary rights to the same extent as
do the laws of the United States.

  The Company is also subject to the risk of adverse claims and litigation
alleging infringement of intellectual property rights of others. On June 8,
1995, a suit alleging misappropriation of trade secrets, infringement of U.S.
Patent No. 5,394,402 and improper hiring of employees was brought against Xylan
by Ascom Timeplex Inc. ("Ascom Timeplex") in the U.S. District Court for the
Central District of California in Los Angeles, California, seeking injunctive
relief and unspecified monetary damages. The Company and Ascom Timeplex have
signed a binding memorandum of understanding to settle this litigation and
dismiss all of Ascom Timeplex's charges against the Company and against Steve Y.
Kim, John Bailey and another employee named in Ascom Timeplex's complaint, and
otherwise release the parties from all claims.  The settlement also involves a
royalty-free license to the Company of Ascom Timeplex's virtual LAN technology
covered by the patent and a royalty-free license to Ascom Timeplex of certain
technology embodied in the Company's currently available products for use in and
in connection with Ascom Timeplex's Synchrony product family.  These licenses
are not assignable other than to a successor-in-interest to Ascom Timeplex.  The
Company also undertakes to transfer a copy of the licensed technology to Ascom
Timeplex and for a specified time not to hire Ascom Timeplex employees.  The
release by Ascom Timeplex is conditioned on transfer of this technology. While
the court dismissed Ascom Timeplex's charges with prejudice in connection with
the settlement, there can be no assurance that future disputes will not arise
between the parties with respect to the settlement or otherwise.

  Since patent applications in the United States are not publicly disclosed
until the patent issues, applications may have been filed which, if issued as
patents, would relate to the Company's products.  In addition, the Company has
not conducted a comprehensive patent search relating to the technology used in
its products.  The Company is subject to the risk of claims and litigation
alleging infringement of the intellectual property rights of others.  These
claims may be asserted against the Company directly in a lawsuit naming the
Company as a defendant, or may be asserted against the Company indirectly in a
lawsuit naming as a defendant one or more customers or resellers of the Company
which the Company is contractually obligated to indemnify in the event of a
lawsuit alleging that products purchased from the Company infringe third party
intellectual property rights.  In addition to the claims of Ascom Timeplex,
Xylan has, from time to time, received claims from third parties alleging
infringement of such third parties' intellectual property rights.  The Company
believes that none of the current claims against the Company would result in
material liability if successful.  Although such claims have not resulted in
material litigation to date, there can be no assurances that such claims will
not be successful or generate material litigation in the future.

  Furthermore, there can be no assurance that third parties will not assert
infringement claims against the Company in the future based on patents or trade
secrets or that such claims will not be successful.  The Company could incur
substantial costs in defending itself and its customers against any such claims,

                                       20
<PAGE>
 
regardless of the merits of such claims. Parties making such claims may be able
to obtain injunctive or other equitable relief which could effectively block the
Company's ability to sell its products in the United States and abroad, and
could result in an award of substantial damages. In the event of a successful
claim of infringement, the Company, its customers and end-users may be required
to obtain one or more licenses from third parties.  There can be no assurance
that the Company or its customers could obtain necessary licenses from third
parties at a reasonable cost or at all.  The defense of any lawsuit could result
in time-consuming and expensive litigation, damages, license fees, royalty
payments and restrictions on the Company's ability to sell its products, any of
which could have a material adverse effect on the Company's business, financial
condition and results of operations.

  DEPENDENCE ON KEY PERSONNEL AND HIRING OF ADDITIONAL PERSONNEL. The Company's
success depends to a significant degree upon the continued contributions of its
key management, engineering, sales and marketing and manufacturing personnel,
many of whom would be difficult to replace.  In particular, the Company believes
that its future success is highly dependent on Steve Y. Kim, Chairman, President
and Chief Executive Officer and John Bailey, Vice President of Product
Development. The Company does not have employment contracts with, and does not
currently maintain key man life insurance covering, its key personnel. The
Company believes its future success will also depend in large part upon its
ability to attract and retain highly skilled managerial, engineering, sales and
marketing, finance and manufacturing personnel. Competition for such personnel
is intense, and there can be no assurance that the Company will be successful in
attracting and retaining such personnel. The loss of the services of any of the
key personnel, the inability to attract or retain qualified personnel in the
future or delays in hiring required personnel, particularly engineers and sales
personnel, could have a material adverse effect on the Company's business,
operating results or financial condition. In addition, companies in the
networking industry whose employees accept positions with competitive companies
frequently claim that their competitors have engaged in unfair hiring practices.
Xylan has, from time to time, received such claims from other companies and,
although claims to date have not resulted in material litigation other than in
connection with Ascom Timeplex, there can be no assurance that the Company will
not receive additional claims in the future as it seeks to hire qualified
personnel or that such claims will not result in material litigation involving
the Company.  The Company could incur substantial costs in defending itself
against any such claims, regardless of the merits of such claims.  To date, the
Company has not lost any employees as a result of such claims.

  INTERNATIONAL OPERATIONS. Sales to customers outside of North America
accounted for approximately 54% and 65% of the Company's revenue for the
quarters ended June 30, 1997 and 1996, respectively. However, these percentages
may understate sales of the Company's products to international end users
because certain of the Company's U.S.-based OEM partners sell the Company's
products abroad. The Company's international sales are conducted primarily
through its OEM partners and independent territory-specific system integrators.
Failure of the Company's OEM partners and system integrators to effectively
market the Company's products internationally or the loss of any of these
resellers could have a material adverse effect on the Company's business,
operating results and financial condition.  A number of additional risks are
inherent in international operations.  The Company's international sales
currently are U.S. dollar- denominated.  As a result, an increase in the value
of the U.S. dollar relative to foreign currencies could make the Company's
products less competitive in international markets. International sales may also
be limited or disrupted by the imposition of governmental controls, export
license requirements, restrictions on the export of critical technology,
currency exchange fluctuations, political instability, trade restrictions and
changes in tariffs.  The Company's operating results could also be adversely
affected by seasonality of international sales.  These international factors
could have a material adverse effect on future sales of the Company's products
to international end-users and, consequently, the Company's business, operating
results and financial condition.

  MARKET FOR NETWORK SWITCHES; GENERAL ECONOMIC CONDITIONS. Demand for the
Company's products depends in large part on overall demand for network switching
products, which may in the future fluctuate significantly based on numerous
factors, including adoption of alternative technologies, capital spending levels
and general economic conditions.  While certain analysts believe that there is a
significant market for network switches, there can be no assurance as to the
rate or extent of the growth of this market.  

                                       21
<PAGE>
 
There can be no assurance that the Company will not experience a decline in
demand for its products, which would have a material adverse effect on the
Company's business, operating results and financial condition.

  NEED FOR ADDITIONAL CAPITAL. The Company requires substantial working capital
to fund its business, particularly to finance inventories and accounts
receivable and for capital expenditures.  The Company believes that its existing
cash and investment balances, together with its line of credit and cash flow
expected to be generated from future operations, will be sufficient to meet the
Company's capital requirements through at least the next twelve months, although
the Company could be required, or could elect, to seek to raise additional
capital.  The Company's future capital requirements will depend on many factors,
including the rate of revenue growth, the timing and extent of spending to
support product development efforts and expansion of sales and marketing, the
timing of introductions of new products and enhancements to existing products,
and market acceptance of the Company's products.  The Company expects that it
may need to raise additional equity or debt financing in the future.  There can
be no assurance that additional equity or debt financing, if required, will be
available on acceptable terms or at all.

  REGULATORY MATTERS. The Company's products must meet industry standards and
receive certification for connection to certain public telecommunications
networks prior to their sale.  In the United States, the Company's products must
comply with various regulations defined by the Federal Communications Commission
and Underwriters Laboratories. Internationally, the Company's products must
comply with standards established by telecommunications authorities in various
countries as well as with recommendations of the International Telecommunication
Union.  Although the Company's products have not been denied any regulatory
approvals or certifications to date, any future inability to obtain on a timely
basis or retain domestic or foreign regulatory approvals or certifications or to
comply with existing or evolving industry standards could have a material
adverse effect on the Company's business, operating results and financial
condition.

  ANTI-TAKEOVER PROVISIONS. Certain provisions of the Company's charter
documents, including provisions eliminating the ability of shareholders to take
action by written consent and limiting the ability of shareholders to raise
matters at a meeting of shareholders without giving advance notice, may have the
effect of delaying or preventing changes in control or management of the
Company, which could have an adverse effect on the market price of the Company's
Common Stock.  In addition, effective upon qualification of the Company as a
"listed corporation," as defined in Section 301.5(d) of the California
Corporations Code (the "California Code"), the Company's charter documents will
eliminate cumulative voting and provide that the Company's Board of Directors
will be divided into two classes, each of which serves for a staggered two-year
term, which may make it more difficult for a third party to gain control of the
Company's Board of Directors.  The Board of Direcotrs has authority to issue up
to 5,000,000 shares of Preferred Stock and to fix the rights, preferences,
privileges and restrictions, including voting rights, of these shares without
any further vote or action by the shareholders.  In addition, on April 17, 1997,
the Company's Board of Directors declared a dividend of one right (a "Right") to
purchase 1/1000th of a share of Series A Participating Preferred Stock (the
"Series A Preferred") on each share of Common Stock. The Rights will become
exercisable only if a person or group acquires 15.0% or more of the Company's
Common Stock (in the case of Steve Y. Kim, Yuri Pikover, John L. Walecka or
Brentwood Associates VI, L.P., this threshold only applies to shares acquired
after April 17, 1997 and if such acquisition is not approved by the Board of
Directors) or announces a tender or exchange offer, the consummation of which
would result in ownership by a person or a group of 15.0% or more of the
Company's Common Stock. Each Right has an exercise price of $75.00 for each
1/1000th of a share of Series A Preferred.

  The rights of the holders of the Company's Common Stock will be subject to,
and may be adversely affected by, the existence of the Rights and the rights of
the holders of any Preferred Stock that may be issued in the future.  The Rights
and any future issuance of Preferred Stock, while providing desirable
flexibility in connection with possible acquisitions and other corporate
purposes, could have the effect of making it more difficult for a third party to
acquire a majority of the outstanding voting stock of the Company, thereby
delaying, deferring or preventing a change in control of the Company.
Furthermore, such Preferred Stock may have other rights, including economic
rights, senior to the Common Stock, and 

                                       22
<PAGE>
 
as a result, the issuance of such Preferred Stock could have a material adverse
effect on the market value of the Common Stock.

  POSSIBLE VOLATILITY OF STOCK PRICE. The market price of the shares of Common
Stock has been and is likely to continue to be highly volatile and may be
significantly affected by factors such as actual or anticipated fluctuations in
the Company's operating results, announcement of technological innovations or
new product introductions by the Company or its competitors, changes of
estimates of the Company's future operating results by securities analysts,
developments with respect to copyrights or proprietary rights, general market
conditions and other factors.  In addition, the stock market has from time to
time experienced significant price and volume fluctuations that have
particularly affected the market prices for the Common Stocks of technology
companies.  These broad market fluctuations may adversely affect the market
price of the Company's Common Stock.

  In October 1996, Steve Kim and Yuri Pikover, executive officers and members of
the Board of Directors of the Company, entered into a program of periodic sales
of shares of their Xylan Common Stock through a blind trust for the purpose of
diversifying their personal holdings. At the beginning of each calendar quarter,
Steve Kim and Yuri Pikover will deliver 125,000 and 55,000 shares, respectively,
to their blind trust for sale within the quarter. Furthermore, the trust for
Steve Kim's children will sell 25,000 shares and Yuri Pikover's trusts will sell
20,000 shares within each quarter. In addition, certain of the venture capital
partnerships that invested in the Company have begun to distribute portions of
their holdings to their general and limited partners, who in turn have begun to
resell such shares on the open market. Any such sales by insiders or
distributions by large investors may also have an adverse effect on the market
price of the Company's Common Stock. In addition, recent changes in the rules
regarding resales of restricted securities pursuant to Rule 144 of the
Securities Act of 1933, as amended, may result in a greater number of shares of
the Company's Stock becoming available for resale sooner than anticipated, and
could have an adverse effect on the market price of the Company's Stock.

                                       23
<PAGE>
 
                        PART II  --  OTHER INFORMATION
                                        
ITEM 1. LEGAL PROCEEDINGS

    None


ITEM 2. CHANGES UPON SECURITIES

  On April 17, 1997, the Company's Board of Directors declared a dividend of
one right (a "Right") to purchase 1/1000th of a share of Series A Participating
Preferred Stock (the "Series A Preferred") on each share of Common Stock. The
Rights will become exercisable only if a person or group acquires 15.0% or more
of the Company's Common Stock (in the case of Steve Y. Kim, Yuri Pikover, John
L. Walecka or Brentwood Associates VI, L.P., this threshold only applies to
shares acquired after April 17, 1997 and if such acquisition is not approved by
the Board of Directors) or announces a tender or exchange offer, the
consummation of which would result in ownership by a person or a group of 15.0%
or more of the Company's Common Stock. Each Right has an exercise price of
$75.00 for each 1/1000th of a share of Series A Preferred.


ITEM 3. DEFAULTS UPON SENIOR SECURITIES

  None.


ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

  On May 29, 1997, at the Company's 1997 Annual Meeting of Shareholders, the
following matters were submitted and voted on by securityholders and were
adopted:


  A. The approval of amendment to the 1996 Stock Plan to increase the number of
     shares of Common Stock reserved for issuance thereunder by 2,000,000
     shares.

     The results for the vote are as follows:

<TABLE> 
<CAPTION> 
     FOR           AGAINST         ABSTAIN        BROKER NON-VOTE
     ---           -------         -------        ---------------
     <S>           <C>             <C>            <C> 
     20,700,345    5,545,229       90,299         403,552
</TABLE> 

  B. The election of three (3) Class I directors and three (3) Class II
     directors to serve until their successors are elected and qualified.

     The results for the vote are as follows:

<TABLE> 
<CAPTION> 
                             FOR                   WITHHELD
                             ---                   --------
     <S>                     <C>                   <C> 
     Steve Y. Kim            26,619,642             119,783
     Robert S. Cecil         26,639,427              99,998
     John L. Walecka         26,640,232              99,193
     Yuri Pikover            26,638,913             100,512
     Robert C. Hawk          26,640,107              99,318
     Trude C. Taylor         26,627,050             112,375
</TABLE> 

                                       24
<PAGE>
 
  C. The ratification of KPMG Peat Marwick LLP as the Company's independent
     auditors for the fiscal year ending December 31, 1997.

     The results of the vote are as follows:
<TABLE> 
<CAPTION> 
     FOR           AGAINST     ABSTAIN
     ---           -------     -------
     <S>           <C>         <C>
     26,669,773    30,461      39,191
</TABLE> 


ITEM 5.  OTHER INFORMATION

  None


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

  (a)  Exhibits

<TABLE> 
<CAPTION> 

Exhibit                             Description
- -------                             -----------
<C>       <S> 
   1.1    Form of Underwriting Agreement.(1)
   3.1    Amended and Restated Articles of Incorporation of Registrant.(1)
   3.2    Amended and Restated Bylaws of Registrant.(1)
   4.1    Form of Common Stock Certificate.(1)
   5.1    Opinion of Venture Law Group, A Professional Corporation.(1)
  10.1    Form of Indemnification Agreement.(1)
  10.2    1993 Stock Incentive Plan.(1)
  10.3    Form of 1996 Employee Stock Purchase Plan and related agreements.(1)
  10.4    Form of 1996 Directors' Option Plan and related agreements.(1)
  10.5    Form of 1996 Stock Plan and related agreements.(1)
  10.6    Fourth Restated Registration Rights Agreement among the Registrant and
          certain securityholders of the Registrant, dated as of December 11,
          1995.(1)
  10.7    Lease Agreement between the Registrant and Malibu Canyon Office
          Partners, L.P. dated as of April 14, 1994, as amended November 3,
          1994, January 2, 1995, and April 25, 1995.(1)
  10.8    Security and Loan Agreement dated September 1, 1995 between the
          Registrant and Imperial Bank.(1)
  10.9    Master Lease Agreement dated as of May 31, 1994, as amended between
          the Registrant and Dominion Ventures, Inc.(1)
  10.10   Master Lease Agreement dated as of June 9, 1995 between the Registrant
          and Copelco Capital, Inc.(1)
  10.11   Value-Added Product Sales Agreement dated as of July 1, 1995 between
          the Registrant and Hamilton Hallmark, a division of Avnet, Inc.(1)
  10.12   401(k) Plan.(1)
  10.13   Series C Preferred Stock Agreement dated as of March 13, 1995 between
          the Registrant and Alcatel Data Networks S.A.(1)
  10.14   International Distributor Agreement between the Registrant and Alcatel
          N.V., dated as of March 13, 1995.(1)
</TABLE> 

                                       25
<PAGE>
 
<TABLE> 

<C>       <S> 
  10.15   Product and Technology Agreement between the Registrant and Alcatel
          N.V. dated as of March 13, 1995.(1)
  10.16+  Original Equipment Manufacturer Agreement dated as of June 14, 1995
          between the Registrant and Hitachi Computer Products (America), 
          Inc.(1)
  10.17   Original Equipment Manufacturer Agreement dated as of April 12, 1995
          between the Registrant and Digital Equipment Corporation.(1)
  10.18+  Manufacturing and Purchase Agreement dated as of March 28, 1996
          between the Registrant and Victron, Inc. Incorporated by reference to
          exhibit 10.18 to the Company's Quarterly Report on Form 10-Q for the
          period ended March 31, 1996.
  10.19   Amendment to Manufacturing and Purchase Agreement between Xylan and
          Victron, Inc. dated as of December 30, 1996.(2)
  10.20   Dale Bartos Employment Agreement dated as of January 4, 1997.(2)
  11.1    Statement of Computation of Earnings Per Share.
  27.1    Financial Data Schedule.
</TABLE> 
- --------
(1) Incorporated by reference to identically numbered exhibits filed in
    response to Item 16(a), "Exhibits," of the Registrant's Registration
    Statement on Form S-1 and Amendments thereto (File No. 333-03623), which
    became effective on May 29, 1996.
(2) Incorporated by reference to identically numbered exhibits filed in the
    Company's Annual Report on Form 10-K for the period ended December 31, 1996.
+   The Company has received confidential treatment for certain portions of
    this exhibit filed with the Commission.


  (b)  Reports on Form 8-K

       No reports on Form 8-K were filed by Xylan during the quarter ended June
       30, 1997.

                                       26
<PAGE>
 
                                   SIGNATURE
                                        

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


                                       XYLAN CORPORATION


                                       By: /s/ Dale J. Bartos
                                           ------------------
Date:  August 12, 1997                     Dale J. Bartos
                                           Vice President and Chief Financial
                                           Officer (Principal Financial and
                                           Chief Accounting Officer)

                                       27
<PAGE>
 
                               INDEX TO EXHIBITS
<TABLE> 
<CAPTION> 

Exhibit                             Description
- -------                             -----------
<C>       <S> 
   1.1    Form of Underwriting Agreement.(1)
   3.1    Amended and Restated Articles of Incorporation of Registrant.(1)
   3.2    Amended and Restated Bylaws of Registrant.(1)
   4.1    Form of Common Stock Certificate.(1)
   5.1    Opinion of Venture Law Group, A Professional Corporation.(1)
  10.1    Form of Indemnification Agreement.(1)
  10.2    1993 Stock Incentive Plan.(1)
  10.3    Form of 1996 Employee Stock Purchase Plan and related agreements.(1)
  10.4    Form of 1996 Directors' Option Plan and related agreements.(1)
  10.5    Form of 1996 Stock Plan and related agreements.(1)
  10.6    Fourth Restated Registration Rights Agreement among the Registrant and
          certain securityholders of the Registrant, dated as of December 11,
          1995.(1)
  10.7    Lease Agreement between the Registrant and Malibu Canyon Office
          Partners, L.P. dated as of April 14, 1994, as amended November 3,
          1994, January 2, 1995, and April 25, 1995.(1)
  10.8    Security and Loan Agreement dated September 1, 1995 between the
          Registrant and Imperial Bank.(1)
  10.9    Master Lease Agreement dated as of May 31, 1994, as amended between
          the Registrant and Dominion Ventures, Inc.(1)
  10.10   Master Lease Agreement dated as of June 9, 1995 between the Registrant
          and Copelco Capital, Inc.(1)
  10.11   Value-Added Product Sales Agreement dated as of July 1, 1995 between
          the Registrant and Hamilton Hallmark, a division of Avnet, Inc.(1)
  10.12   401(k) Plan.(1)
  10.13   Series C Preferred Stock Agreement dated as of March 13, 1995 between
          the Registrant and Alcatel Data Networks S.A.(1)
  10.14   International Distributor Agreement between the Registrant and Alcatel
          N.V., dated as of March 13, 1995.(1)
  10.15   Product and Technology Agreement between the Registrant and Alcatel
          N.V. dated as of March 13, 1995.(1)
  10.16+  Original Equipment Manufacturer Agreement dated as of June 14, 1995
          between the Registrant and Hitachi Computer Products (America),
          Inc.(1)
  10.17   Original Equipment Manufacturer Agreement dated as of April 12, 1995
          between the Registrant and Digital Equipment Corporation.(1)
  10.18+  Manufacturing and Purchase Agreement dated as of March 28, 1996
          between the Registrant and Victron, Inc. Incorporated by reference to
          exhibit 10.18 to the Company's Quarterly Report on Form 10-Q for the
          period ended March 31, 1996.
  10.19   Amendment to Manufacturing and Purchase Agreement between Xylan and
          Victron, Inc. dated as of December 30, 1996.(2)
  10.20   Dale Bartos Employment Agreement dated as of January 4, 1997.(2)
</TABLE> 

                                       28
<PAGE>
 
<TABLE> 
<CAPTION> 

Exhibit                             Description
- -------                             -----------
<C>       <S> 
  11.1    Statement of Computation of Earnings Per Share.
  27.1    Financial Data Schedule.
</TABLE> 
- --------
(1) Incorporated by reference to identically numbered exhibits filed in
    response to Item 16(a), "Exhibits," of the Registrant's Registration
    Statement on Form S-1 and Amendments thereto (File No. 333-03623), which
    became effective on May 29, 1996.
(2) Incorporated by reference to identically numbered exhibits filed in the
    Company's Annual Report on Form 10-K for the period ended December 31, 1996.
+   The Company has received confidential treatment for certain portions of
    this exhibit filed with the Commission.

                                       29

<PAGE>
 
                                                                    EXHIBIT 11.1


            STATEMENT REGARDING COMPUTATION OF NET INCOME PER SHARE
                                 (IN THOUSANDS)
<TABLE> 
<CAPTION> 

                                                        THREE MONTHS ENDED
                                                    ---------------------------
                                                    JUNE 30, MARCH 31, JUNE 30,
                                                      1997     1997      1996
                                                    -------- --------- --------
<S>                                                 <C>      <C>       <C> 
Net income........................................  $ 7,090   $ 5,868  $ 2,901
                                                    =======   =======  =======
                                                            
Weighted average common shares outstanding........   42,278    42,147   40,963
                                                            
Weighted average common stock equivalents - Stock           
  options determined using the treasury stock               
  method..........................................    3,989     4,447    6,033
                                                    -------   -------  -------
                                                            
     Weighted average common and common                     
        equivalent shares outstanding.............   46,267    46,594   46,996
                                                    =======   =======  =======
                                                            
Net income per share..............................  $   .15   $   .13  $   .06
                                                    =======   =======  =======
</TABLE> 
<TABLE> 
<CAPTION> 
                                                    SIX MONTHS ENDED JUNE 30,
                                                    -------------------------
                                                          1997     1996
                                                        -------  --------
<S>                                                     <C>      <C> 
Net income........................................      $12,958  $  5,584
                                                        =======  ========

Weighted average common shares outstanding........       42,273    39,350

Weighted average common stock equivalents - Stock
  options determined using the treasury stock 
  method..........................................        4,234     6,178
                                                        -------  --------
Weighted average common and common
  equivalent shares outstanding...................       46,507    45,528
                                                        =======  ========

Net income per share..............................      $   .28  $    .12
                                                        =======  ========
</TABLE> 

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          62,463
<SECURITIES>                                    34,346
<RECEIVABLES>                                   45,180
<ALLOWANCES>                                       270
<INVENTORY>                                     15,300
<CURRENT-ASSETS>                               159,943
<PP&E>                                          26,826
<DEPRECIATION>                                   7,957
<TOTAL-ASSETS>                                 230,433
<CURRENT-LIABILITIES>                           27,257
<BONDS>                                              0
                                0
                                          0
<COMMON>                                            43
<OTHER-SE>                                     201,851
<TOTAL-LIABILITY-AND-EQUITY>                   230,433
<SALES>                                         45,122
<TOTAL-REVENUES>                                45,122
<CGS>                                           20,255
<TOTAL-COSTS>                                   20,255
<OTHER-EXPENSES>                                21,605
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  21
<INCOME-PRETAX>                                  5,074
<INCOME-TAX>                                   (2,016)
<INCOME-CONTINUING>                              7,090
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,090
<EPS-PRIMARY>                                      .15
<EPS-DILUTED>                                      .15
        

</TABLE>


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