LIVINGSTON ENTERPRISES, INC.

                                1997 STOCK PLAN


    1.   PURPOSES OF THE PLAN.  The purposes of this Stock Plan are:

         -    to attract and retain the best available personnel for positions
              of substantial responsibility, 

         -    to provide additional incentive to Employees, Directors and
              Consultants, and 

         -    to promote the success of the Company's business.  

    Options granted under the Plan may be Incentive Stock Options or 
Nonstatutory Stock Options, as determined by the Administrator at the time of 
grant.  Stock Purchase Rights may also be granted under the Plan.  

    2.   DEFINITIONS.  As used herein, the following definitions shall apply:

         (a)  "ADMINISTRATOR" means the Board or any of its Committees as 
shall be administering the Plan, in accordance with Section 4 of the Plan.

         (b)  "APPLICABLE LAWS" means the requirements relating to the 
administration of stock option plans under U. S. state corporate laws, U.S. 
federal and state securities laws, the Code, any stock exchange or quotation 
system on which the Common Stock is listed or quoted and the applicable laws 
of any foreign country or jurisdiction where Options or Stock Purchase Rights 
are, or will be, granted under the Plan.

         (c)  "BOARD" means the Board of Directors of the Company.

         (d)  "CODE" means the Internal Revenue Code of 1986, as amended.

         (e)  "COMMITTEE"  means a committee of Directors appointed by the 
Board in accordance with Section 4 of the Plan.

         (f)  "COMMON STOCK" means the common stock of the Company.

         (g)  "COMPANY" means Livingston Enterprises, Inc., a California 
corporation.




         (h)  "CONSULTANT" means any person, including an advisor, engaged by 
the Company or a Parent or Subsidiary to render services to such entity.

         (i)  "DIRECTOR" means a member of the Board.

         (j)  "DISABILITY" means total and permanent disability as defined in 
Section 22(e)(3) of the Code.

         (k)  "EMPLOYEE" means any person, including Officers and Directors, 
employed by the Company or any Parent or Subsidiary of the Company.  A 
Service Provider shall not cease to be an Employee in the case of (i) any 
leave of absence approved by the Company or (ii) transfers between locations 
of the Company or between the Company, its Parent, any Subsidiary, or any 
successor. For purposes of Incentive Stock Options, no such leave may exceed 
ninety days, unless reemployment upon expiration of such leave is guaranteed 
by statute or contract.  If reemployment upon expiration of a leave of 
absence approved by the Company is not so guaranteed, on the 181st day of 
such leave any Incentive Stock Option held by the Optionee shall cease to be 
treated as an Incentive Stock Option and shall be treated for tax purposes as 
a Nonstatutory Stock Option. Neither service as a Director nor payment of a 
director's fee by the Company shall be sufficient to constitute "employment" 
by the Company.

         (l)  "EXCHANGE ACT" means the Securities Exchange Act of 1934, as 
amended.

         (m)  "FAIR MARKET VALUE" means, as of any date, the value of Common 
Stock determined as follows:

              (i)  If the Common Stock is listed on any established stock 
exchange or a national market system, including without limitation the Nasdaq 
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its 
Fair Market Value shall be the closing sales price for such stock (or the 
closing bid, if no sales were reported) as quoted on such exchange or system 
for the last market trading day prior to the time of determination, as 
reported in THE WALL STREET JOURNAL or such other source as the Administrator 
deems reliable;

              (ii) If the Common Stock is regularly quoted by a recognized 
securities dealer but selling prices are not reported, the Fair Market Value 
of a Share of Common Stock shall be the mean between the high bid and low 
asked prices for the Common Stock on the last market trading day prior to the 
day of determination, as reported in THE WALL STREET JOURNAL or such other 
source as the Administrator deems reliable; or 

              (iii) In the absence of an established market for the 
Common Stock, the Fair Market Value shall be determined in good faith by the 
Administrator.

         (n)  "INCENTIVE STOCK OPTION" means an Option intended to qualify as 
an incentive stock option within the meaning of Section 422 of the Code and 
the regulations promulgated thereunder.

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         (o)  "INSIDE DIRECTOR"  means a Director who is an Employee.

         (p)  "NONSTATUTORY STOCK OPTION" means an Option not intended to 
qualify as an Incentive Stock Option.

         (q)  "NOTICE OF GRANT" means a written or electronic notice 
evidencing certain terms and conditions of an individual Option or Stock 
Purchase Right grant.  The Notice of Grant is part of the Option Agreement.

         (r)  "OFFICER" means a person who is an officer of the Company 
within the meaning of Section 16 of the Exchange Act and the rules and 
regulations promulgated thereunder.

         (s)  "OPTION" means a stock option granted pursuant to the Plan.

         (t)  "OPTION AGREEMENT" means an agreement between the Company and 
an Optionee evidencing the terms and conditions of an individual Option 
grant.  The Option Agreement is subject to the terms and conditions of the 
Plan.

         (u)  "OPTION EXCHANGE PROGRAM" means a program whereby outstanding 
Options are surrendered in exchange for Options with a lower exercise price.

         (v)  "OPTIONED STOCK" means the Common Stock subject to an Option or 
Stock Purchase Right.

         (w)  "OPTIONEE" means the holder of an outstanding Option or Stock 
Purchase Right granted under the Plan.

         (x)  "PARENT" means a "parent corporation," whether now or hereafter 
existing, as defined in Section 424(e) of the Code.

         (y)  "PLAN" means this 1997 Stock Plan.

         (z) "RESTRICTED STOCK" means shares of Common Stock acquired 
pursuant to a grant of Stock Purchase Rights under Section 11 of the Plan.

         (aa) "RESTRICTED STOCK PURCHASE AGREEMENT" means a written agreement 
between the Company and the Optionee evidencing the terms and restrictions 
applying to stock purchased under a Stock Purchase Right.  The Restricted 
Stock Purchase Agreement is subject to the terms and conditions of the Plan 
and the Notice of Grant.

         (bb) "RULE 16b-3" means Rule 16b-3 of the Exchange Act or any 
successor to Rule 16b-3, as in effect when discretion is being exercised with 
respect to the Plan.

                                      -3-



         (cc) "SECTION 16(b)" means Section 16(b) of the Exchange Act.

         (dd) "SERVICE PROVIDER" means an Employee, Director or Consultant.

         (ee) "SHARE" means a share of the Common Stock, as adjusted in 
accordance with Section 14 of the Plan.

         (ff) "STOCK PURCHASE RIGHT" means the right to purchase Common Stock 
pursuant to Section 11 of the Plan, as evidenced by a Notice of Grant.

         (gg) "SUBSIDIARY" means a "subsidiary corporation", whether now or 
hereafter existing, as defined in Section 424(f) of the Code.

    3.   STOCK SUBJECT TO THE PLAN.  Subject to the provisions of Section 14 
of the Plan, the maximum aggregate number of Shares which may be optioned and 
sold under the Plan is (i)  1,500,000 Shares, (ii)  any Shares which have 
been reserved but unissued under the Company's 1994 Stock Option Plan (the 
"1994 Plan") as of the date of shareholder approval of this Plan and (iii) 
any Shares returned to the 1994 Plan as a result of termination of options 
under the 1994 Plan, plus an annual increase to be added on each anniversary 
date of the adoption of the Plan equal to the lesser of (i) 600,000 Shares, 
(ii) 4% of the outstanding Shares on such date or (iii) a lesser amount 
determined by the Board. The Shares may be authorized, but unissued, or 
reacquired Common Stock.  

         If an Option or Stock Purchase Right expires or becomes 
unexercisable without having been exercised in full, or is surrendered 
pursuant to an Option Exchange Program, the unpurchased Shares which were 
subject thereto shall become available for future grant or sale under the 
Plan (unless the Plan has terminated); PROVIDED, however, that Shares that 
have actually been issued under the Plan, whether upon exercise of an Option 
or Right, shall not be returned to the Plan and shall not become available 
for future distribution under the Plan, except that if Shares of Restricted 
Stock are repurchased by the Company at their original purchase price, such 
Shares shall become available for future grant under the Plan. 

    4.   ADMINISTRATION OF THE PLAN.

         (a)  PROCEDURE.

              (i)  MULTIPLE ADMINISTRATIVE BODIES.  The Plan may be 
administered by different Committees with respect to different groups of 
Service Providers.

              (ii) SECTION 162(m). To the extent that the Administrator 
determines it to be desirable to qualify Options granted hereunder as 
"performance-based compensation" within the meaning of Section 162(m) of the 
Code, the Plan shall be administered by a Committee of two or more "outside 
directors" within the meaning of Section 162(m) of the Code.

                                      -4-



              (iii) RULE 16b-3.  To the extent desirable to qualify 
transactions hereunder as exempt under Rule 16b-3, the transactions 
contemplated hereunder shall be structured to satisfy the requirements for 
exemption under Rule 16b-3.

              (iv) OTHER ADMINISTRATION.  Other than as provided above, the 
Plan shall be administered by (A) the Board or (B) a Committee, which 
committee shall be constituted to satisfy Applicable Laws. 

         (b)  POWERS OF THE ADMINISTRATOR.  Subject to the provisions of the 
Plan, and in the case of a Committee, subject to the specific duties 
delegated by the Board to such Committee, the Administrator shall have the 
authority, in its discretion:

              (i)  to determine the Fair Market Value;

              (ii) to select the Service Providers to whom Options and Stock 
Purchase Rights may be granted hereunder;

              (iii) to determine the number of shares of Common Stock to 
be covered by each Option and Stock Purchase Right granted hereunder;

              (iv) to approve forms of agreement for use under the Plan;

              (v)  to determine the terms and conditions, not inconsistent 
with the terms of the Plan, of any Option or Stock Purchase Right granted 
hereunder. Such terms and conditions include, but are not limited to, the 
exercise price, the time or times when Options or Stock Purchase Rights may 
be exercised (which may be based on performance criteria), any vesting 
acceleration or waiver of forfeiture restrictions, and any restriction or 
limitation regarding any Option or Stock Purchase Right of the shares of 
Common Stock relating thereto, based in each case on such factors as the 
Administrator, in its sole discretion, shall determine;

              (vi) to reduce the exercise price of any Option or Stock 
Purchase Right to the then current Fair Market Value if the Fair Market Value 
of the Common Stock covered by such Option or Stock Purchase Right shall have 
declined since the date the Option or Stock Purchase Right was granted;

              (vii) to institute an Option Exchange Program;

              (viii) to construe and interpret the terms of the Plan and 
awards granted pursuant to the Plan;

                                      -5-



              (ix) to prescribe, amend and rescind rules and regulations 
relating to the Plan, including rules and regulations relating to sub-plans 
established for the purpose of qualifying for preferred tax treatment under 
foreign tax laws;

              (x)  to modify or amend each Option or Stock Purchase Right 
(subject to Section 15(c) of the Plan), including the discretionary authority 
to extend the post-termination exercisability period of Options longer than 
is otherwise provided for in the Plan;

              (xi) to allow Optionees to satisfy withholding tax obligations 
by electing to have the Company withhold from the Shares to be issued upon 
exercise of an Option or Stock Purchase Right that number of Shares having a 
Fair Market Value equal to the amount required to be withheld.  The Fair 
Market Value of the Shares to be withheld shall be determined on the date 
that the amount of tax to be withheld is to be determined.  All elections by 
an Optionee to have Shares withheld for this purpose shall be made in such 
form and under such conditions as the Administrator may deem necessary or 
advisable;

              (xii) to authorize any person to execute on behalf of the 
Company any instrument required to effect the grant of an Option or Stock 
Purchase Right previously granted by the Administrator;

              (xiii) to make all other determinations deemed necessary or 
advisable for administering the Plan.

         (c)  EFFECT OF ADMINISTRATOR'S DECISION.  The Administrator's 
decisions, determinations and interpretations shall be final and binding on 
all Optionees and any other holders of Options or Stock Purchase Rights.

    5.   ELIGIBILITY.  Nonstatutory Stock Options and Stock Purchase Rights 
may be granted to Service Providers.  Incentive Stock Options may be granted 
only to Employees.

    6.   LIMITATIONS.

         (a)  Each Option shall be designated in the Option Agreement as 
either an Incentive Stock Option or a Nonstatutory Stock Option.  However, 
notwithstanding such designation, to the extent that the aggregate Fair 
Market Value of the Shares with respect to which Incentive Stock Options are 
exercisable for the first time by the Optionee during any calendar year 
(under all plans of the Company and any Parent or Subsidiary) exceeds 
$100,000, such Options shall be treated as Nonstatutory Stock Options.  For 
purposes of this Section 6(a), Incentive Stock Options shall be taken into 
account in the order in which they were granted.  The Fair Market Value of 
the Shares shall be determined as of the time the Option with respect to such 
Shares is granted.

         (b)  Neither the Plan nor any Option or Stock Purchase Right shall 
confer upon an Optionee any right with respect to continuing the Optionee's 
relationship as a Service Provider with

                                      -6-



the Company, nor shall they interfere in any way with the Optionee's right or 
the Company's right to terminate such relationship at any time, with or 
without cause.

         (c)  The following limitations shall apply to grants of Options:

              (i)  No Service Provider shall be granted, in any fiscal year 
of the Company, Options to purchase more than 500,000 Shares.

              (ii) In connection with his or her initial service, a Service 
Provider may be granted Options to purchase up to an additional 
250,000 Shares which shall not count against the limit set forth in 
subsection (i) above.

              (iii) The foregoing limitations shall be adjusted 
proportionately in connection with any change in the Company's capitalization 
as described in Section 13. 

              (iv) If an Option is cancelled in the same fiscal year of 
the Company in which it was granted (other than in connection with a 
transaction described in Section 13), the cancelled Option will be counted 
against the limits set forth in subsections (i) and (ii) above.  For this 
purpose, if the exercise price of an Option is reduced, the transaction will 
be treated as a cancellation of the Option and the grant of a new Option.

    7.   TERM OF PLAN.  Subject to Section 19 of the Plan, the Plan shall 
become effective upon its adoption by the Board.  It shall continue in effect 
for a term of ten (10) years unless terminated earlier under Section 15 of 
the Plan.

    8.   TERM OF OPTION.  The term of each Option shall be stated in the 
Option Agreement.  In the case of an Incentive Stock Option, the term shall 
be ten (10) years from the date of grant or such shorter term as may be 
provided in the Option Agreement.  Moreover, in the case of an Incentive 
Stock Option granted to an Optionee who, at the time the Incentive Stock 
Option is granted, owns stock representing more than ten percent (10%) of the 
total combined voting power of all classes of stock of the Company or any 
Parent or Subsidiary, the term of the Incentive Stock Option shall be five 
(5) years from the date of grant or such shorter term as may be provided in 
the Option Agreement.

    9.   OPTION EXERCISE PRICE AND CONSIDERATION.

         (a)  EXERCISE PRICE.  The per share exercise price for the Shares to 
be issued pursuant to exercise of an Option shall be determined by the 
Administrator, subject to the following:

              (i)  In the case of an Incentive Stock Option

                   (A)  granted to an Employee who, at the time the Incentive 
Stock Option is granted, owns stock representing more than ten percent (10%) 
of the voting power of all classes of

                                      -7-



stock of the Company or any Parent or Subsidiary, the per Share exercise 
price shall be no less than 110% of the Fair Market Value per Share on the 
date of grant.

                   (B)  granted to any Employee other than an Employee 
described in paragraph (A) immediately above, the per Share exercise price 
shall be no less than 100% of the Fair Market Value per Share on the date of 
grant.

              (ii) In the case of a Nonstatutory Stock Option, the per Share 
exercise price shall be determined by the Administrator.  In the case of a 
Nonstatutory Stock Option intended to qualify as "performance-based 
compensation" within the meaning of Section 162(m) of the Code, the per Share 
exercise price shall be no less than 100% of the Fair Market Value per Share 
on the date of grant.

              (iii) Notwithstanding the foregoing, Options may be granted 
with a per Share exercise price of less than 100% of the Fair Market Value 
per Share on the date of grant pursuant to a merger or other corporate 
transaction.

         (b)  WAITING PERIOD AND EXERCISE DATES.  At the time an Option is 
granted, the Administrator shall fix the period within which the Option may 
be exercised and shall determine any conditions which must be satisfied 
before the Option may be exercised. 

         (c)  FORM OF CONSIDERATION.  The Administrator shall determine the 
acceptable form of consideration for exercising an Option, including the 
method of payment.  In the case of an Incentive Stock Option, the 
Administrator shall determine the acceptable form of consideration at the 
time of grant.  Such consideration may consist entirely of:

              (i)  cash;

              (ii) check;

              (iii) promissory note;

              (iv) other Shares which (A) in the case of Shares acquired upon 
exercise of an option, have been owned by the Optionee for more than six 
months on the date of surrender, and (B) have a Fair Market Value on the date 
of surrender equal to the aggregate exercise price of the Shares as to which 
said Option shall be exercised;

              (v)  consideration received by the Company under a cashless 
exercise program implemented by the Company in connection with the Plan;

              (vi) a reduction in the amount of any Company liability to 
the Optionee, including any liability attributable to the Optionee's 
participation in any Company-sponsored deferred compensation program or 
arrangement;

                                     -8-



              (vii) any combination of the foregoing methods of payment; 
or

              (viii) such other consideration and method of payment for 
the issuance of Shares to the extent permitted by Applicable Laws.

    10.  EXERCISE OF OPTION.

         (a)  PROCEDURE FOR EXERCISE; RIGHTS AS A SHAREHOLDER. Any Option 
granted hereunder shall be exercisable according to the terms of the Plan and 
at such times and under such conditions as determined by the Administrator 
and set forth in the Option Agreement.  Unless the Administrator provides 
otherwise, vesting of Options granted hereunder shall be tolled during any 
unpaid leave of absence.  An Option may not be exercised for a fraction of a 
Share.

              An Option shall be deemed exercised when the Company receives: 
(i) written or electronic notice of exercise (in accordance with the Option 
Agreement) from the person entitled to exercise the Option, and (ii) full 
payment for the Shares with respect to which the Option is exercised.  Full 
payment may consist of any consideration and method of payment authorized by 
the Administrator and permitted by the Option Agreement and the Plan.  Shares 
issued upon exercise of an Option shall be issued in the name of the Optionee 
or, if requested by the Optionee, in the name of the Optionee and his or her 
spouse. Until the Shares are issued (as evidenced by the appropriate entry on 
the books of the Company or of a duly authorized transfer agent of the 
Company), no right to vote or receive dividends or any other rights as a 
shareholder shall exist with respect to the Optioned Stock, notwithstanding 
the exercise of the Option. The Company shall issue (or cause to be issued) 
such Shares promptly after the Option is exercised.  No adjustment will be 
made for a dividend or other right for which the record date is prior to the 
date the Shares are issued, except as provided in Section 13 of the Plan.

              Exercising an Option in any manner shall decrease the number of 
Shares thereafter available, both for purposes of the Plan and for sale under 
the Option, by the number of Shares as to which the Option is exercised.

         (b)  TERMINATION OF RELATIONSHIP AS A SERVICE PROVIDER.  If an 
Optionee ceases to be a Service Provider, other than upon the Optionee's 
death or Disability, the Optionee may exercise his or her Option within such 
period of time as is specified in the Option Agreement to the extent that the 
Option is vested on the date of termination (but in no event later than the 
expiration of the term of such Option as set forth in the Option Agreement).  
In the absence of a specified time in the Option Agreement, the Option shall 
remain exercisable for three (3) months following the Optionee's termination. 
 If, on the date of termination, the Optionee is not vested as to his or her 
entire Option, the Shares covered by the unvested portion of the Option shall 
revert to the Plan. If, after termination, the Optionee does not exercise his 
or her Option within the time specified by the Administrator, the Option 
shall terminate, and the Shares covered by such Option shall revert to the 
Plan.

                                      -9-



         (c)  DISABILITY OF OPTIONEE.  If an Optionee ceases to be a Service 
Provider as a result of the Optionee's Disability, the Optionee may exercise 
his or her Option within such period of time as is specified in the Option 
Agreement to the extent the Option is vested on the date of termination (but 
in no event later than the expiration of the term of such Option as set forth 
in the Option Agreement).  In the absence of a specified time in the Option 
Agreement, the Option shall remain exercisable for twelve (12) months 
following the Optionee's termination.  If, on the date of termination, the 
Optionee is not vested as to his or her entire Option, the Shares covered by 
the unvested portion of the Option shall revert to the Plan.  If, after 
termination, the Optionee does not exercise his or her Option within the time 
specified herein, the Option shall terminate, and the Shares covered by such 
Option shall revert to the Plan.

         (d)  DEATH OF OPTIONEE.  If an Optionee dies while a Service 
Provider, the Option may be exercised within such period of time as is 
specified in the Option Agreement (but in no event later than the expiration 
of the term of such Option as set forth in the Notice of Grant), by the 
Optionee's estate or by a person who acquires the right to exercise the 
Option by bequest or inheritance, but only to the extent that the Option is 
vested on the date of death.  In the absence of a specified time in the 
Option Agreement, the Option shall remain exercisable for twelve (12) months 
following the Optionee's termination.  If, at the time of death, the Optionee 
is not vested as to his or her entire Option, the Shares covered by the 
unvested portion of the Option shall immediately revert to the Plan.  The 
Option may be exercised by the executor or administrator of the Optionee's 
estate or, if none, by the person(s) entitled to exercise the Option under 
the Optionee's will or the laws of descent or distribution.  If the Option is 
not so exercised within the time specified herein, the Option shall 
terminate, and the Shares covered by such Option shall revert to the Plan.

         (e)  BUYOUT PROVISIONS.  The Administrator may at any time offer to 
buy out for a payment in cash or Shares an Option previously granted based on 
such terms and conditions as the Administrator shall establish and 
communicate to the Optionee at the time that such offer is made.

    11.  STOCK PURCHASE RIGHTS.

         (a)  RIGHTS TO PURCHASE.  Stock Purchase Rights may be issued either 
alone, in addition to, or in tandem with other awards granted under the Plan 
and/or cash awards made outside of the Plan.  After the Administrator 
determines that it will offer Stock Purchase Rights under the Plan, it shall 
advise the offeree in writing or electronically, by means of a Notice of 
Grant, of the terms, conditions and restrictions related to the offer, 
including the number of Shares that the offeree shall be entitled to 
purchase, the price to be paid, and the time within which the offeree must 
accept such offer.  The offer shall be accepted by execution of a Restricted 
Stock Purchase Agreement in the form determined by the Administrator.

         (b)  REPURCHASE OPTION.  Unless the Administrator determines 
otherwise, the Restricted Stock Purchase Agreement shall grant the Company a 
repurchase option exercisable upon the voluntary or involuntary termination 
of the purchaser's service with the Company for any reason (including death 
or Disability).  The purchase price for Shares repurchased pursuant to the 
Restricted Stock Purchase Agreement shall be the original price paid by the 
purchaser and may be paid by

                                     -10-



cancellation of any indebtedness of the purchaser to the Company.  The 
repurchase option shall lapse at a rate determined by the Administrator.

         (c)  OTHER PROVISIONS.  The Restricted Stock Purchase Agreement 
shall contain such other terms, provisions and conditions not inconsistent 
with the Plan as may be determined by the Administrator in its sole 
discretion. 

         (d)  RIGHTS AS A SHAREHOLDER.  Once the Stock Purchase Right is 
exercised, the purchaser shall have the rights equivalent to those of a 
shareholder, and shall be a shareholder when his or her purchase is entered 
upon the records of the duly authorized transfer agent of the Company.  No 
adjustment will be made for a dividend or other right for which the record 
date is prior to the date the Stock Purchase Right is exercised, except as 
provided in Section 13 of the Plan.

    12.  NON-TRANSFERABILITY OF OPTIONS AND STOCK PURCHASE RIGHTS.  Unless 
determined otherwise by the Administrator, an Option or Stock Purchase Right 
may not be sold, pledged, assigned, hypothecated, transferred, or disposed of 
in any manner other than by will or by the laws of descent or distribution 
and may be exercised, during the lifetime of the Optionee, only by the 
Optionee.  If the Administrator makes an Option or Stock Purchase Right 
transferable, such Option or Stock Purchase Right shall contain such 
additional terms and conditions as the Administrator deems appropriate.

                                      -11-



    13.  ADJUSTMENTS UPON CHANGES IN CAPITALIZATION, DISSOLUTION, MERGER OR   
       ASSET SALE. 

         (a)  CHANGES IN CAPITALIZATION.  Subject to any required action by 
the shareholders of the Company, the number of shares of Common Stock covered 
by each outstanding Option and Stock Purchase Right, and the number of shares 
of Common Stock which have been authorized for issuance under the Plan but as 
to which no Options or Stock Purchase Rights have yet been granted or which 
have been returned to the Plan upon cancellation or expiration of an Option 
or Stock Purchase Right, as well as the price per share of Common Stock 
covered by each such outstanding Option or Stock Purchase Right, shall be 
proportionately adjusted for any increase or decrease in the number of issued 
shares of Common Stock resulting from a stock split, reverse stock split, 
stock dividend, combination or reclassification of the Common Stock, or any 
other increase or decrease in the number of issued shares of Common Stock 
effected without receipt of consideration by the Company; provided, however, 
that conversion of any convertible securities of the Company shall not be 
deemed to have been "effected without receipt of consideration."  Such 
adjustment shall be made by the Board, whose determination in that respect 
shall be final, binding and conclusive. Except as expressly provided herein, 
no issuance by the Company of shares of stock of any class, or securities 
convertible into shares of stock of any class, shall affect, and no 
adjustment by reason thereof shall be made with respect to, the number or 
price of shares of Common Stock subject to an Option or Stock Purchase Right.

         (b)  DISSOLUTION OR LIQUIDATION.  In the event of the proposed 
dissolution or liquidation of the Company, the Administrator shall notify 
each Optionee as soon as practicable prior to the effective date of such 
proposed transaction.  The Administrator in its discretion may provide for an 
Optionee to have the right to exercise his or her Option until ten (10) days 
prior to such transaction as to all of the Optioned Stock covered thereby, 
including Shares as to which the Option would not otherwise be exercisable.  
In addition, the Administrator may provide that any Company repurchase option 
applicable to any Shares purchased upon exercise of an Option or Stock 
Purchase Right shall lapse as to all such Shares, provided the proposed 
dissolution or liquidation takes place at the time and in the manner 
contemplated.  To the extent it has not been previously exercised, an Option 
or Stock Purchase Right will terminate immediately prior to the consummation 
of such proposed action.

         (c)  MERGER OR ASSET SALE.  In the event of a merger of the Company 
with or into another corporation, or the sale of substantially all of the 
assets of the Company, each outstanding Option and Stock Purchase Right shall 
be assumed or an equivalent option or right substituted by the successor 
corporation or a Parent or Subsidiary of the successor corporation.  In the 
event that the successor corporation refuses to assume or substitute for the 
Option or Stock Purchase Right, the Optionee shall fully vest in and have the 
right to exercise the Option or Stock Purchase Right as to all of the 
Optioned Stock, including Shares as to which it would not otherwise be vested 
or exercisable.  If an Option or Stock Purchase Right becomes fully vested 
and exercisable in lieu of assumption or substitution in the event of a 
merger or sale of assets, the Administrator shall notify the Optionee in 
writing or electronically that the Option or Stock Purchase Right shall be 
fully vested and exercisable for a period of fifteen (15) days from the date 
of such notice, and the Option or Stock Purchase Right shall terminate upon 
the expiration of such period.  For the purposes of this paragraph, the 
Option or Stock Purchase Right shall be considered assumed if, following the 
merger or sale of assets, the

                                     -12-



option or right confers the right to purchase or receive, for each Share of 
Optioned Stock subject to the Option or Stock Purchase Right immediately 
prior to the merger or sale of assets, the consideration (whether stock, 
cash, or other securities or property) received in the merger or sale of 
assets by holders of Common Stock for each Share held on the effective date 
of the transaction (and if holders were offered a choice of consideration, 
the type of consideration chosen by the holders of a majority of the 
outstanding Shares); provided, however, that if such consideration received 
in the merger or sale of assets is not solely common stock of the successor 
corporation or its Parent, the Administrator may, with the consent of the 
successor corporation, provide for the consideration to be received upon the 
exercise of the Option or Stock Purchase Right, for each Share of Optioned 
Stock subject to the Option or Stock Purchase Right, to be solely common 
stock of the successor corporation or its Parent equal in fair market value 
to the per share consideration received by holders of Common Stock in the 
merger or sale of assets.

    14.  DATE OF GRANT.  The date of grant of an Option or Stock Purchase 
Right shall be, for all purposes, the date on which the Administrator makes 
the determination granting such Option or Stock Purchase Right, or such other 
later date as is determined by the Administrator.  Notice of the 
determination shall be provided to each Optionee within a reasonable time 
after the date of such grant.

    15.  AMENDMENT AND TERMINATION OF THE PLAN.

         (a)  AMENDMENT AND TERMINATION.  The Board may at any time amend, 
alter, suspend or terminate the Plan.  

         (b)  SHAREHOLDER APPROVAL.  The Company shall obtain shareholder 
approval of any Plan amendment to the extent necessary and desirable to 
comply with Applicable Laws. 

         (c)  EFFECT OF AMENDMENT OR TERMINATION.  No amendment, alteration, 
suspension or termination of the Plan shall impair the rights of any 
Optionee, unless mutually agreed otherwise between the Optionee and the 
Administrator, which agreement must be in writing and signed by the Optionee 
and the Company. Termination of the Plan shall not affect the Administrator's 
ability to exercise the powers granted to it hereunder with respect to 
Options granted under the Plan prior to the date of such termination.

    16.  CONDITIONS UPON ISSUANCE OF SHARES.  

         (a)  LEGAL COMPLIANCE.  Shares shall not be issued pursuant to the 
exercise of an Option or Stock Purchase Right unless the exercise of such 
Option or Stock Purchase Right and the issuance and delivery of such Shares 
shall comply with Applicable Laws and shall be further subject to the 
approval of counsel for the Company with respect to such compliance.

         (b)  INVESTMENT REPRESENTATIONS.  As a condition to the exercise of 
an Option or Stock Purchase Right, the Company may require the person 
exercising such Option or Stock Purchase Right to represent and warrant at 
the time of any such exercise that the Shares are being purchased only for

                                     -13-



investment and without any present intention to sell or distribute such 
Shares if, in the opinion of counsel for the Company, such a representation 
is required.

    17.  INABILITY TO OBTAIN AUTHORITY.  The inability of the Company to 
obtain authority from any regulatory body having jurisdiction, which 
authority is deemed by the Company's counsel to be necessary to the lawful 
issuance and sale of any Shares hereunder, shall relieve the Company of any 
liability in respect of the failure to issue or sell such Shares as to which 
such requisite authority shall not have been obtained.

    18.  RESERVATION OF SHARES.  The Company, during the term of this Plan, 
will at all times reserve and keep available such number of Shares as shall 
be sufficient to satisfy the requirements of the Plan.

    19.  SHAREHOLDER APPROVAL.  The Plan shall be subject to approval by the 
shareholders of the Company within twelve (12) months after the date the Plan 
is adopted.  Such shareholder approval shall be obtained in the manner and to 
the degree required under Applicable Laws.

                                     -14-



                          LIVINGSTON ENTERPRISES, INC.

                                1997 STOCK PLAN

                            STOCK OPTION AGREEMENT


    Unless otherwise defined herein, the terms defined in the Plan shall have 
the same defined meanings in this Option Agreement.

I.  NOTICE OF STOCK OPTION GRANT

[Optionee's Name and Address]

    You have been granted an option to purchase Common Stock of the Company, 
subject to the terms and conditions of the Plan and this Option Agreement, as 
follows:

    Grant Number                  _________________________

    Date of Grant                 _________________________

    Vesting Commencement Date     _________________________

    Exercise Price per Share           $________________________

    Total Number of Shares Granted     _________________________

    Total Exercise Price               $_________________________

    Type of Option:                    ___   Incentive Stock Option

                                       ___   Nonstatutory Stock Option

    Term/Expiration Date:              _________________________


  VESTING SCHEDULE:

    This Option may be exercised, in whole or in part, in accordance with the 
following schedule:

    [25% of the Shares subject to the Option shall vest twelve months after 
the Vesting Commencement Date, and 1/48 of the Shares subject to the Option 
shall vest each month thereafter, subject to the Optionee continuing to be 
a Service Provider on such dates].




    TERMINATION PERIOD:

    This Option may be exercised for [three months] after Optionee ceases to 
be a Service Provider.  Upon the death or Disability of the Optionee, this 
Option may be exercised for [one year] after Optionee ceases to be a Service 
Provider. In no event shall this Option be exercised later than the 
Term/Expiration Date as provided above.

II.  AGREEMENT

    1.   GRANT OF OPTION.  The Plan Administrator of the Company hereby 
grants to the Optionee named in the Notice of Grant attached as Part I of 
this Agreement (the "Optionee") an option (the "Option") to purchase the 
number of Shares, as set forth in the Notice of Grant, at the exercise price 
per share set forth in the Notice of Grant (the "Exercise Price"), subject to 
the terms and conditions of the Plan, which is incorporated herein by 
reference.  Subject to Section 15(c) of the Plan, in the event of a conflict 
between the terms and conditions of the Plan and the terms and conditions of 
this Option Agreement, the terms and conditions of the Plan shall prevail.

         If designated in the Notice of Grant as an Incentive Stock Option 
("ISO"), this Option is intended to qualify as an Incentive Stock Option 
under Section 422 of the Code.  However, if this Option is intended to be an 
Incentive Stock Option, to the extent that it exceeds the $100,000 rule of 
Code Section 422(d) it shall be treated as a Nonstatutory Stock Option 
("NSO").

    2.   EXERCISE OF OPTION.

         (a)  RIGHT TO EXERCISE.  This Option is exercisable during its term 
in accordance with the Vesting Schedule set out in the Notice of Grant and 
the applicable provisions of the Plan and this Option Agreement.

         (b)  METHOD OF EXERCISE.  This Option is exercisable by delivery of 
an exercise notice, in the form attached as Exhibit A (the "Exercise 
Notice"), which shall state the election to exercise the Option, the number 
of Shares in respect of which the Option is being exercised (the "Exercised 
Shares"), and such other representations and agreements as may be required by 
the Company pursuant to the provisions of the Plan.  The Exercise Notice 
shall be completed by the Optionee and delivered to [Secretary] of the 
Company.  The Exercise Notice shall be accompanied by payment of the 
aggregate Exercise Price as to all Exercised Shares.  This Option shall be 
deemed to be exercised upon receipt by the Company of such fully executed 
Exercise Notice accompanied by such aggregate Exercise Price.

         No Shares shall be issued pursuant to the exercise of this Option 
unless such issuance and exercise complies with Applicable Laws.  Assuming 
such compliance, for income tax purposes the Exercised Shares shall be 
considered transferred to the Optionee on the date the Option is exercised 
with respect to such Exercised Shares.

                                     -2-



    3.   METHOD OF PAYMENT.  Payment of the aggregate Exercise Price shall be 
by any of the following, or a combination thereof, at the election of the 
Optionee:

         (a)  cash; or

         (b)  check; or

         (c)  consideration received by the Company under a cashless exercise 
program implemented by the Company in connection with the Plan; or 

         (d)  surrender of other Shares which (i) in the case of Shares 
acquired upon exercise of an option, have been owned by the Optionee for more 
than six (6) months on the date of surrender, AND (ii) have a Fair Market 
Value on the date of surrender equal to the aggregate Exercise Price of the 
Exercised Shares.

    4.   NON-TRANSFERABILITY OF OPTION.  This Option may not be transferred 
in any manner otherwise than by will or by the laws of descent or 
distribution and may be exercised during the lifetime of Optionee only by the 
Optionee.  The terms of the Plan and this Option Agreement shall be binding 
upon the executors, administrators, heirs, successors and assigns of the 
Optionee.

    5.   TERM OF OPTION.  This Option may be exercised only within the term 
set out in the Notice of Grant, and may be exercised during such term only in 
accordance with the Plan and the terms of this Option Agreement.

    6.   TAX CONSEQUENCES.  Some of the federal tax consequences relating to 
this Option, as of the date of this Option, are set forth below.  THIS 
SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE 
SUBJECT TO CHANGE.  THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE 
EXERCISING THIS OPTION OR DISPOSING OF THE SHARES.

         (a)  EXERCISING THE OPTION.

              (i)  NONSTATUTORY STOCK OPTION.  The Optionee may incur regular 
federal income tax liability upon exercise of a NSO.  The Optionee will be 
treated as having received compensation income (taxable at ordinary income 
tax rates) equal to the excess, if any, of the Fair Market Value of the 
Exercised Shares on the date of exercise over their aggregate Exercise Price. 
 If the Optionee is an Employee or a former Employee, the Company will be 
required to withhold from his or her compensation or collect from Optionee 
and pay to the applicable taxing authorities an amount in cash equal to a 
percentage of this compensation income at the time of exercise, and may 
refuse to honor the exercise and refuse to deliver Shares if such withholding 
amounts are not delivered at the time of exercise.

              (ii) INCENTIVE STOCK OPTION.  If this Option qualifies as an 
ISO, the Optionee will have no regular federal income tax liability upon its 
exercise, although the excess, if any, of the Fair

                                      -3-



Market Value of the Exercised Shares on the date of exercise over their 
aggregate Exercise Price will be treated as an adjustment to alternative 
minimum taxable income for federal tax purposes and may subject the Optionee 
to alternative minimum tax in the year of exercise.  In the event that the 
Optionee ceases to be an Employee but remains a Service Provider, any 
Incentive Stock Option of the Optionee that remains unexercised shall cease 
to qualify as an Incentive Stock Option and will be treated for tax purposes 
as a Nonstatutory Stock Option on the date three (3) months and one (1) day 
following such change of status.

         (b)  DISPOSITION OF SHARES.  

              (i)  NSO.  If the Optionee holds NSO Shares for at least one 
year, any gain realized on disposition of the Shares will be treated as 
long-term capital gain for federal income tax purposes.

              (ii) ISO.  If the Optionee holds ISO Shares for at least one 
year after exercise and two years after the grant date, any gain realized on 
disposition of the Shares will be treated as long-term capital gain for 
federal income tax purposes.  If the Optionee disposes of ISO Shares within 
one year after exercise or two years after the grant date, any gain realized 
on such disposition will be treated as compensation income (taxable at 
ordinary income rates) to the extent of the excess, if any, of the lesser of 
(A) the difference between the Fair Market Value of the Shares acquired on 
the date of exercise and the aggregate Exercise Price, or (B) the difference 
between the sale price of such Shares and the aggregate Exercise Price.  Any 
additional gain will be taxed as capital gain, short-term or long-term 
depending on the period that the ISO Shares were held.

         (c)  NOTICE OF DISQUALIFYING DISPOSITION OF ISO SHARES.  If the 
Optionee sells or otherwise disposes of any of the Shares acquired pursuant 
to an ISO on or before the later of (i) two years after the grant date, or 
(ii) one year after the exercise date, the Optionee shall immediately notify 
the Company in writing of such disposition.  The Optionee agrees that he or 
she may be subject to income tax withholding by the Company on the 
compensation income recognized from such early disposition of ISO Shares by 
payment in cash or out of the current earnings paid to the Optionee.

    7.   ENTIRE AGREEMENT; GOVERNING LAW.  The Plan is incorporated herein by 
reference.  The Plan and this Option Agreement constitute the entire 
agreement of the parties with respect to the subject matter hereof and 
supersede in their entirety all prior undertakings and agreements of the 
Company and Optionee with respect to the subject matter hereof, and may not 
be modified adversely to the Optionee's interest except by means of a writing 
signed by the Company and Optionee.  This agreement is governed by the 
internal substantive laws, but not the choice of law rules, of California.

    8.   NO GUARANTEE OF CONTINUED SERVICE.  OPTIONEE ACKNOWLEDGES AND AGREES 
THAT THE VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED 
ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (AND NOT 
THROUGH THE ACT OF BEING HIRED, BEING GRANTED AN OPTION OR PURCHASING SHARES 
HEREUNDER).  OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, 
THE TRANSACTIONS

                                      -4-



CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT 
CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE 
PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL NOT 
INTERFERE WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO TERMINATE 
OPTIONEE'S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR WITHOUT 
CAUSE.

    By your signature and the signature of the Company's representative 
below, you and the Company agree that this Option is granted under and 
governed by the terms and conditions of the Plan and this Option Agreement.  
Optionee has reviewed the Plan and this Option Agreement in their entirety, 
has had an opportunity to obtain the advice of counsel prior to executing 
this Option Agreement and fully understands all provisions of the Plan and 
Option Agreement. Optionee hereby agrees to accept as binding, conclusive and 
final all decisions or interpretations of the Administrator upon any 
questions relating to the Plan and Option Agreement.  Optionee further agrees 
to notify the Company upon any change in the residence address indicated 
below.

OPTIONEE:                              LIVINGSTON ENTERPRISES, INC.



___________________________________         _________________________________
Signature                                   By

____________________________________        _________________________________
Print Name                                  Title

____________________________________
Residence Address

____________________________________


                                      -5-



                               CONSENT OF SPOUSE

    The undersigned spouse of Optionee has read and hereby approves the terms 
and conditions of the Plan and this Option Agreement.  In consideration of 
the Company's granting his or her spouse the right to purchase Shares as set 
forth in the Plan and this Option Agreement, the undersigned hereby agrees to 
be irrevocably bound by the terms and conditions of the Plan and this Option 
Agreement and further agrees that any community property interest shall be 
similarly bound.  The undersigned hereby appoints the undersigned's spouse as 
attorney-in-fact for the undersigned with respect to any amendment or 
exercise of rights under the Plan or this Option Agreement.


                                  _______________________________________
                                  Spouse of Optionee


                                      -6-



                                   EXHIBIT A

                                1997 STOCK PLAN

                                EXERCISE NOTICE


Livingston Enterprises, Inc.
4464 Willow Road
Pleasanton, CA  94588


Attention:  [Secretary]

    1.   EXERCISE OF OPTION.  Effective as of today, ________________, 199__, 
the undersigned ("Purchaser") hereby elects to purchase ______________ shares 
(the "Shares") of the Common Stock of Livingston Enterprises, Inc. (the 
"Company") under and pursuant to the 1997 Stock Plan (the "Plan") and the 
Stock Option Agreement dated ______________ , 19___ (the "Option Agreement"). 
 The purchase price for the Shares shall be $ ______________ , as required by 
the Option Agreement.

    2.   DELIVERY OF PAYMENT.  Purchaser herewith delivers to the Company the 
full purchase price for the Shares.

    3.   REPRESENTATIONS OF PURCHASER.  Purchaser acknowledges that Purchaser 
has received, read and understood the Plan and the Option Agreement and 
agrees to abide by and be bound by their terms and conditions.

    4.   RIGHTS AS SHAREHOLDER.  Until the issuance (as evidenced by the 
appropriate entry on the books of the Company or of a duly authorized 
transfer agent of the Company) of the Shares, no right to vote or receive 
dividends or any other rights as a shareholder shall exist with respect to 
the Optioned Stock, notwithstanding the exercise of the Option.  The Shares 
so acquired shall be issued to the Optionee as soon as practicable after 
exercise of the Option. No adjustment will be made for a dividend or other 
right for which the record date is prior to the date of issuance, except as 
provided in Section 13 of the Plan.

    5.   TAX CONSULTATION.  Purchaser understands that Purchaser may suffer 
adverse tax consequences as a result of Purchaser's purchase or disposition 
of the Shares.  Purchaser represents that Purchaser has consulted with any 
tax consultants Purchaser deems advisable in connection with the purchase or 
disposition of the Shares and that Purchaser is not relying on the Company 
for any tax advice.

    6.   ENTIRE AGREEMENT; GOVERNING LAW.  The Plan and Option Agreement are 
incorporated herein by reference.  This Agreement, the Plan and the Option 
Agreement constitute the entire agreement of the parties with respect to the 
subject matter hereof and supersede in their entirety all prior undertakings 
and agreements of the Company and Purchaser with respect to the subject 
matter hereof, and may not be modified adversely to the Purchaser's interest 
except by means of a writing



signed by the Company and Purchaser.  This agreement is governed by the 
internal substantive laws, but not the choice of law rules, of California.

Submitted by:                          Accepted by:

PURCHASER:                             LIVINGSTON ENTERPRISES, INC.


__________________________________          __________________________________
Signature                                   By

__________________________________          __________________________________
Print Name                                  Its


ADDRESS:                               ADDRESS:

                                       Livingston Enterprises, Inc.
                                       4464 Willow Road
                                       Pleasanton, CA  94588

                                       _____________________________________
                                       Date Received

                                      -2-