NETWORK GENERAL CORPORATION
S-8, 1997-09-04
COMPUTER COMMUNICATIONS EQUIPMENT
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<PAGE>

                   UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                                Washington, D.C. 20549

                                       FORM S-8

                                REGISTRATION STATEMENT
                                        UNDER
                              THE SECURITIES ACT OF 1933
                              --------------------------

                             NETWORK GENERAL CORPORATION                 
                ------------------------------------------------------
                (Exact name of registrant as specified in its charter)

               DELAWARE                                   77-0115204          
    -------------------------------         ------------------------------------
    (State or other jurisdiction            (I.R.S. employer identification no.)
    of incorporation or organization)

                                 4200 BOHANNON DRIVE
                              MENLO PARK, CALIFORNIA 94025               
                 ----------------------------------------------------
                 (Address of principal executive offices)  (Zip code)

                             NETWORK GENERAL CORPORATION
                                1989 STOCK OPTION PLAN
                           1989 EMPLOYEE STOCK PURCHASE PLAN   
                     CINCO NETWORKS, INC. 1997 STOCK OPTION PLAN
                     --------------------------------------------
                               (Full title of the plan)

                                    SCOTT C. NEELY
                    VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                             NETWORK GENERAL CORPORATION
                                 4200 BOHANNON DRIVE
                             MENLO PARK, CALIFORNIA 94025          
                    ----------------------------------------------
                       (Name and address of agent for service)

Telephone number, including area code, of agent for service:  650/473-2000

This registration statement shall hereafter become effective in accordance with
Rule 462 promulgated under the Securities Act of 1933, as amended.

The Exhibit Index is on page II-6 of this Registration Statement.

<PAGE>
- --------------------------------------------------------------------------------
                       CALCULATION OF REGISTRATION FEE
- --------------------------------------------------------------------------------
                              Proposed         Proposed
Title of                      maximum          maximum
securities       Amount       offering         aggregate        Amount of
to be            to be        price per        offering         registration
Registered       Registered   Share (1)        Price (1)        Fee       
- --------------------------------------------------------------------------------

NETWORK GENERAL CORPORATION 1989 STOCK OPTION PLAN
Common Stock,    
Par value $0.01  1,500,000    $16.437500       $24,656,250.00   $7,471.59

NETWORK GENERAL CORPORATION 1989 EMPLOYEE STOCK PURCHASE PLAN
Common Stock,    
Par Value $0.01    500,000    $13.971875        $6,985,937.50   $2,116.95

CINCO NETWORKS, INC. 1997 STOCK OPTION PLAN
Common Stock     
Par Value $0.01     69,402     $0.410000           $28,454.82       $8.62
                 ---------    ----------       --------------    --------

TOTAL            2,069,402    $15.304248       $31,670,642.32   $9,597.16

- -------------------------

(1)  Estimated pursuant to Rule 457 solely for purposes of calculating the
registration fee. As to the shares issuable under the Network General
Corporation 1989 Stock Option Plan, the price is based upon the average of the
high and low prices of the Common Stock on August 29, 1997 as reported on the
National Association of Securities Dealers National Market System.  The Network
General Corporation 1989 Employee Stock Purchase Plan establishes a purchase
price equal to 85% of the fair market value of the Company's Common Stock and,
therefore, the price for purchase rights under this plan is based upon 85% of
the average of the high and low prices of the Common Stock on August 29, 1997,
as reported on the National Association of Securities Dealers National Market
System.  As to the shares issuable under the Cinco Networks, Inc. 1997 Stock
Option Plan, the price is based on the average exercise price of the outstanding
options.

<PAGE>

                                       PART II
                                           
                  INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE

    Network General Corporation (the "Company") hereby incorporates by
reference in this registration statement the following documents:

    (a)  The Company's latest annual report on Form 10-K filed pursuant to
Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), containing audited financial statements for the Company's
latest fiscal year ended March 31, 1997, as filed June 27, 1997.

    (b)  All other reports filed pursuant to Section 13(a) or 15(d) of the
Exchange Act since the end of the fiscal year covered by the annual report
referred to in (a) above.

    (c)  The description of the Company's Common Stock contained in the
Company's Registration Statement on Form S-1 (No. 33-36134, effective August 2,
1989) filed under the Securities Act of 1933, as amended (the "Securities Act"),
including any amendment or report filed for the purpose of updating such
description.

    All documents subsequently filed by the Company pursuant to Sections 13(a),
13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective
amendment to this registration statement which indicates that all securities
offered hereby have been sold or which deregisters all securities remaining
unsold, shall be deemed to be incorporated by reference in this registration
statement and to be a part hereof from the date of filing of such documents.

ITEM 4.  DESCRIPTION OF SECURITIES

    The class of securities offered is registered under Section 12 of the
Exchange Act.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL

    LEGAL OPINION.  The validity of the shares of Common Stock to be offered
hereunder has been passed upon for the Company by Scott C. Neely, the Company's
Vice President, General Counsel and Secretary.  As of August 29, 1997, Mr. Neely
owns no shares of the Company's securities and holds options to purchase less
than 1% of the outstanding shares of the Company's common stock.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

    Delaware law authorizes corporations to eliminate the personal liability 
of directors to corporations and their stockholders for monetary damages for 
breach or alleged breach of the directors' fiduciary "duty of care."  While 
the relevant statute does not change directors' duty of care, it enables 
corporations to limit available relief to equitable remedies such as 
injunction or rescission.  The statute has no effect on directors' duty of 
loyalty, acts or omissions not in good faith and involving intentional 
misconduct or knowing violations of law, illegal payment of dividends and 
approval of any transactions from which a director derives an improper 
personal benefit.

                                       II-1
<PAGE>

    The Company has adopted provisions in its Certificate of Incorporation 
which eliminate the personal liability of its directors to the Company and 
its stockholders for monetary damages for breach or alleged breach of their 
duty of care.  The By-laws of the Company provide for indemnification of its 
directors, officers, employees and agents to the full extent permitted by the 
General Corporation Law of the State of Delaware, the Company's state of 
incorporation, including those circumstances in which indemnification would 
otherwise be discretionary under Delaware law.  In addition, the Company has 
entered into separate indemnification agreements with its directors, officers 
and certain employees which require the Company, among other things, to 
indemnify them against certain liabilities which may arise by reason of their 
status or service (other than liabilities arising from willful misconduct of 
a culpable nature) and to obtain directors' and officers' insurance, if 
available on reasonable terms.  Section 145 of the General Corporation Law of 
the State of Delaware provides for indemnification in terms sufficiently 
broad to indemnify such individuals, under certain circumstances, for 
liabilities (including reimbursement of expenses incurred) arising under the 
Securities Act.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED

    Inapplicable.

ITEM 8.  EXHIBITS

    See Exhibit Index.

ITEM 9.  UNDERTAKINGS

    (a)  RULE 415 OFFERING

         The undersigned registrant hereby undertakes:

         (1)  To file, during any period in which offers or sales are being 
made, a post-effective amendment to this registration statement:

              (i)   To include any prospectus required by Section 10(a)(3) of 
the Securities Act of 1933;

              (ii)  To reflect in the prospectus any facts or events arising 
after the effective date of the registration statement (or the most recent 
post-effective amendment thereof) which, individually or in the aggregate, 
represent a fundamental change in the information set forth in the 
registration statement;

              (iii) To include any material information with respect to the 
plan of distribution not previously disclosed in the registration statement 
or any material change to such information in the registration statement;

PROVIDED, HOWEVER, that paragraphs (a)(1)(i) and (a)(l)(ii) do not apply if the
registration statement is on Form S-3 or Form S-8, and the information required
to be included in a post-effective amendment by those paragraphs is contained in
periodic reports filed by the registrant pursuant to Section 13 or Section 15(d)
of the Exchange Act that are incorporated by reference in the registration
statement.

                                       II-2
<PAGE>

         (2)  That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

         (3)  To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

    (b)  FILING INCORPORATING SUBSEQUENT EXCHANGE ACT DOCUMENTS BY REFERENCE

         The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in the registration statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

    (h)  REQUEST FOR ACCELERATION OF EFFECTIVE DATE OR FILING OF REGISTRATION
STATEMENT ON FORM S-8

         Insofar as indemnification for liabilities arising under the 
Securities Act of 1933 may be permitted to directors, officers and 
controlling persons of the registrant pursuant to the foregoing provisions, 
or otherwise, the registrant has been advised that in the opinion of the 
Securities and Exchange Commission such indemnification is against public 
policy as expressed in the Act and is, therefore, unenforceable.  In the 
event that a claim for indemnification against such liabilities (other than 
the payment by the registrant of expenses incurred or paid by a director, 
officer or controlling person of the registrant in the successful defense of 
any action, suit or proceeding) is asserted by such director, officer or 
controlling person in connection with the securities being registered, the 
registrant will, unless in the opinion of its counsel the matter has been 
settled by controlling precedent, submit to a court of appropriate 
jurisdiction the question whether such indemnification by it is against 
public policy as expressed in the Act and will be governed by the final 
adjudication of such issue.

                             SIGNATURE

    Pursuant to the requirements of the Securities Act of 1933, as amended, 
the registrant certifies that it has reasonable grounds to believe that it 
meets all of the requirements for filing on Form S-8 and has duly caused this 
registration statement to be signed on its behalf by the undersigned, 
thereunto duly authorized, in the City of Menlo Park, State of California, on 
September 3, 1997.

                               Network General Corporation


                               By: /s/ James T. Richardson             
                                  ------------------------------------------
                                  James T. Richardson, Senior Vice President
                                  and Chief Financial Officer


                                       II-3
<PAGE>

                                  POWER OF ATTORNEY

    The officers and directors of Network General Corporation whose 
signatures appear below, hereby constitute and appoint Leslie G. Denend, 
James T. Richardson and Scott C. Neely, and each of them, their true and 
lawful attorneys and agents, with full power of substitution, each with power 
to act alone, to sign and execute on behalf of the undersigned any amendment 
or amendments to this registration statement on Form S-8, and do ratify and 
confirm all that each of said attorney and agent, or their or his 
substitutes, shall do or cause to be done by virtue hereof.  Pursuant to the 
requirements of the Securities Act, this registration statement has been 
signed by the following in the capacities indicated on September 3, 1997.

Signature                    Title
- --------------------------------------------------------------------------------


/s/ Leslie G. Denend         President and Chief Executive Officer
- -------------------------    (Principal Executive Officer)
Leslie G. Denend             


/s/ James T. Richardson      Senior Vice President and Chief Financial Officer
- -------------------------    (Principal Financial Officer)
James T. Richardson          


/s/ Charles J. Abbe          Director
- -------------------------
Charles J. Abbe


/s/ Douglas C. Chance        Director
- -------------------------
Douglas C. Chance


                             Director
- -------------------------
Howard Frank


/s/ Gregory M. Gallo         Director
- -------------------------
Gregory M. Gallo


/s/ Laurence R. Hootnick     Director
- -------------------------
Laurence R. Hootnick


/s/ Janet L. Hyland          Director
- -------------------------
Janet L. Hyland


/s/ Harry Saal               Director
- -------------------------
Harry Saal

                                       II-4
<PAGE>

/s/ Michael Cully            Vice President and Controller
- -------------------------    (Principal Accounting Officer)
Michael Cully

                                       II-5
<PAGE>

                                EXHIBIT INDEX


 4.1.  Third Restated Certificate of Incorporation of the Company - incorporated
       by reference to Exhibit 4.1 of the Registration Statement on Form S-8 
       (Registration No. 333-12187) filed with the SEC on September 17, 1996.

 4.2.  Amended and Restated Bylaws of the Company - incorporated by reference
       to Exhibit 3.2 of the Company's Quarterly report on Form 10-Q for the 
       quarter ended September 30, 1995.

 4.3.  Rights Agreement between the Company and The First National Bank of 
       Boston (as successor trustee) dated June 26, 1992, as amended - 
       incorporated by reference to Exhibit 10.3 of the Company's Annual Report 
       on Form 10-K for the year ended March 31, 1991.

 5     Opinion re legality

23.1   Consent of Counsel (included in Exhibit 5)
    
23.2   Consent of Arthur Andersen LLP

24     Power of Attorney (included in signature pages to this registration 
       statement)

99.1   Network General Corporation 1989 Stock Option Plan, as amended through
       August 8, 1997, and related documentation.

99.2   Network General Corporation 1989 Employee Stock Purchase Plan, as amended
       through August 8, 1997, and related documentation.

99.3   Cinco Networks, Inc. 1997 Stock Option Plan, and related documentation.

                                       II-6

<PAGE>

                                                                       EXHIBIT 5
                  [NETWORK GENERAL CORPORATION LETTERHEAD]
                              September 3, 1997

Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549

Ladies and Gentlemen:

    As General Counsel for Network General Corporation, a Delaware 
corporation (the "Company"), I am rendering this opinion in connection with 
the registration under the Securities Act of 1933, as amended, of up to 
2,069,402 shares of the Common Stock, $0.01 par value, of the Company which 
may be issued pursuant to the exercise of options and purchase rights granted 
under the Network General Corporation 1989 Stock Option Plan, the Network 
General Corporation 1989 Employee Stock Purchase Plan and the Cinco Networks, 
Inc. 1997 Stock Option Plan (the "Plans").

    I have examined all instruments, documents and records which I deemed 
relevant and necessary for the basis of my opinion expressed below.  In such 
examination, I have assumed the genuineness of all signatures and the 
authenticity of all documents submitted to me as originals and the conformity 
to the originals of all documents submitted to me as copies.  I am admitted 
to practice only in the State of California and express no opinion concerning 
any law other than the law of the State of California, the corporation laws 
of the State of Delaware and the federal law of the United States.  As to 
matters of Delaware corporation law, I have based our opinion solely upon our 
examination of such laws and the rules and regulations of the authorities 
administering such laws, all as reported in standard, unofficial 
compilations.  I have not obtained opinions of counsel licensed to practice 
in jurisdictions other than the State of California.

    Based on such examination, I am of the opinion that the 2,069,402 shares 
of Common Stock which may be issued upon exercise of options and purchase 
rights granted under the Plans are duly authorized shares of the Company's 
Common Stock, and, when issued against receipt of the consideration therefor 
in accordance with the provisions of the Plans, will be validly issued, fully 
paid and nonassessable.  I hereby consent to the filing of this opinion as an 
exhibit to the Registration Statement referred to above and the use of my 
name wherever it appears in the Registration Statement.

                                       Very truly yours,

                                       /s/ Scott C. Neely

                                       Scott C. Neely
                                       Vice President and General Counsel

<PAGE>

                                                                    EXHIBIT 23.2

                 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation by 
reference in this registration statement of our report dated April 18, 1997 
included in Network General Corporation's Form 10-K for the year ended March 
31, 1997.

/s/ Arthur Andersen LLP

San Jose, California
September 3, 1997

<PAGE>
                                EXHIBIT 99.1
                                           
                                           
                        NETWORK GENERAL CORPORATION
                           1989 STOCK OPTION PLAN

                    (As Amended Through August 8, 1997)


    1.   PURPOSE.  The Network General Corporation 1989 Stock Option Plan 
(the "Plan") is established to create additional incentive for key employees, 
directors and consultants of Network General Corporation and any successor 
corporation thereto (collectively referred to as the "Company"), and any 
present or future parent and/or subsidiary corporations of such corporation 
(all of whom along with the Company being individually referred to as a 
"Participating Company" and collectively referred to as the "Participating 
Company Group"), to promote the financial success and progress of the 
Participating Company Group. For purposes of the Plan, a parent corporation 
and a subsidiary corporation shall be as defined in sections 424(e) and 
424(f) of the Internal Revenue Code of 1986, as amended (the "Code").

    2.   ADMINISTRATION.

         (a)  ADMINISTRATION BY BOARD AND/OR COMMITTEE.  The Plan shall be 
administered by the Board of Directors of the Company (the "Board") and/or by 
a duly appointed committee of the Board having such powers as shall be 
specified by the Board.  Any subsequent references herein to the Board shall 
also mean the committee if such committee has been appointed and, unless the 
powers of the committee have been specifically limited, the committee shall 
have all of the powers of the Board granted herein, including, without 
limitation, the power to terminate or amend the Plan at any time, subject to 
the terms of the Plan and any applicable limitations imposed by law.  All 
questions of interpretation of the Plan or of any options granted under the 
Plan (an "Option") shall be determined by the Board, and such determinations 
shall be final and binding upon all persons having an interest in the Plan 
and/or any Option.

         (b)  OPTIONS AUTHORIZED.  Options may be either incentive stock 
options as defined in section 422 of the Code ("Incentive Stock Options") or 
nonqualified stock options.

         (c)  AUTHORITY OF OFFICERS.  Any officer of a Participating Company 
shall have the authority to act on behalf of the Company with respect to any 
matter, right, obligation, or election which is the responsibility of or 
which is allocated to the Company herein, provided the officer has apparent 
authority with respect to such matter, right, obligation, or election.

         (d)  DISINTERESTED ADMINISTRATION.  With respect to the 
participation in the Plan of officers or directors of the Company subject to 
Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange 
Act"), the Plan shall be administered by the Board in compliance with the 
"disinterested administration" requirement of Rule 16b-3, as promulgated 

<PAGE>

under the Exchange Act and amended from time to time or any successor rule or 
regulation ("Rule 16b-3").

         (e)  COMPLIANCE WITH SECTION 162(m) OF THE CODE.  In the event a 
Participating Company is a "publicly held corporation" as defined in 
paragraph (2) of section 162(m) of the Code, as amended by the Revenue 
Reconciliation Act of 1993 (P.L. 103-66), and the regulations promulgated 
thereunder ("Section 162(m)"), the Company may establish a committee of 
outside directors meeting the requirements of paragraph 4(C)(i) of Section 
162(m) to approve the grant of Options which might reasonably be anticipated 
to result in the payment of employee remuneration that would otherwise exceed 
the limit on employee remuneration deductible for income tax purposes 
pursuant to Section 162(m).

    3.   ELIGIBILITY.  The Options may be granted only to employees 
(including officers and directors who are also employees) of the 
Participating Company Group or to individuals who are rendering services as 
consultants or other independent contractors to the Participating Company 
Group.  The Board shall, in the Board's sole discretion, determine which 
persons shall be granted Options (an "Optionee").  An individual who is 
rendering services as a consultant or other independent contractor shall be 
eligible to be granted only a nonqualified stock option.  An Optionee may, if 
otherwise eligible, be granted additional Options.

    4.   SHARES SUBJECT TO OPTION.  Options shall be for the purchase of 
shares of the authorized but unissued common stock or treasury shares of 
common stock of the Company (the "Stock"), subject to adjustment as provided 
in paragraph 9 below.  The maximum number of shares of Stock which may be 
issued under the Plan shall be Seventeen Million Five Hundred Thousand 
(17,500,000) shares.  Subject to adjustment as provided in paragraph 9 below, 
at any such time as a Participating Company is a "publicly held corporation" 
as defined in paragraph 2 of Section 162(m), no person shall be granted 
within any fiscal year of the Company Options which in the aggregate cover 
more than Six Hundred Thousand (600,000) shares; provided, however, that the 
foregoing limit shall be One Miilion Two Hundred Thousand (1,200,000) shares 
with respect to Options granted to any person during the first fiscal year of 
such person's employment with the Company (the "Per Optionee Limit").  In the 
event that any outstanding Option for any reason expires or is terminated or 
canceled and/or shares of Stock subject to repurchase are repurchased by the 
Company, the shares allocable to the unexercised portion of such Option, or 
such repurchased shares, may again be subject to an Option grant.  
Notwithstanding the foregoing, any such shares shall be made subject to a new 
Option only if the grant of such new Option and the issuance of such shares 
pursuant to such new Option would not cause the Plan or any Option granted 
under the Plan to contravene Rule 16b-3.

    5.   TIME FOR GRANTING OPTIONS.  All Options shall be granted, if at all, 
within ten (10) years from the earlier of the date the Plan is adopted by the 
Board or the date the Plan is duly approved by the shareholders of the 
Company.

    6.   TERMS, CONDITIONS AND FORM OF OPTIONS.  Subject to the provisions of 
the Plan, the Board shall determine for each Option (which need not be 
identical) the number of shares of 

                                       2

<PAGE>

Stock for which the Option shall be granted, the option price of the Option, 
the exercisability of the Option, whether the Option is to be treated as an 
Incentive Stock Option or as a nonqualified stock option and all other terms 
and conditions of the Option not inconsistent with the Plan.  Options granted 
pursuant to the Plan shall be evidenced by written agreements specifying the 
number of shares of Stock covered thereby, in such form as the Board shall 
from time to time establish, and shall comply with and be subject to the 
following terms and conditions:

         (a)  EXERCISE PRICE.  The exercise price for each Option shall be 
established in the sole discretion of the Board; provided, however, that (i) 
the exercise price per share for an Option shall be not less than the fair 
market value, as determined by the Board, of a share of Stock on the date of 
the granting of the Option, and (ii) no Option granted to an Optionee who at 
the time the Option is granted owns stock possessing more than ten percent 
(10%) of the total combined voting power of all classes of stock of a 
Participating Company within the meaning of section 422(b)(6) of the Code 
and/or ten percent (10%) of the total combined value of all classes of stock 
of a Participating Company (a "Ten Percent Owner Optionee") shall have an 
exercise price per share less than one hundred ten percent (110%) of the fair 
market value of a share of Stock on the date the Option is granted.  
Notwithstanding the foregoing, an Option (whether an Incentive Stock Option 
or a nonqualified stock option) may be granted with an exercise price lower 
than the minimum exercise price set forth above if such Option is granted 
pursuant to an assumption or substitution for another option in a manner 
qualifying with the provisions of section 424(a) of the Code.

         (b)  EXERCISE PERIOD OF OPTIONS.  The Board shall have the power to 
set the time or times within which each Option shall be exercisable or the 
event or events upon the occurrence of which all or a portion of each Option 
shall be exercisable and the term of each Option; provided, however, that (I) 
no Option shall be exercisable after the expiration of ten (10) years after 
the date such Option is granted and (ii) no Option granted to a Ten Percent 
Owner Optionee shall be exercisable after the expiration of five (5) years 
after the date such Option is granted.

         (c)  PAYMENT OF EXERCISE PRICE.  Payment of the exercise price for the
number of shares of Stock being purchased pursuant to any Option shall be made
(i) in cash, by check, or cash equivalent, (ii) by tender to the Company of
shares of the Company's stock owned by the Optionee having a value, as
determined by the Board (but without regard to any restrictions on
transferability applicable to such stock by reason of federal or state
securities laws or agreements with an underwriter for the Company), not less
than the exercise price, (iii) by the Optionee's recourse promissory note, (iv)
by the assignment of the proceeds of a sale of some or all of the shares being
acquired upon the exercise of an Option (including, without limitation, through
an exercise complying with the provisions of Regulation T as promulgated from
time to time by the Board of Governors of the Federal Reserve System), or (v) by
any combination thereof.  The Board may at any time or from time to time, by
adoption of or by amendment to the form of Standard Option Agreement described
in paragraph 7 below, or by other means, grant Options which do not permit all
of the foregoing forms of consideration to be used in payment of the exercise
price and/or which otherwise restrict one (1) or more forms of consideration. 

                                       3
<PAGE>

Notwithstanding the foregoing, an Option may not be exercised by tender to 
the Company of shares of the Company's stock to the extent such tender of 
stock would constitute a violation of the provisions of any law, regulation 
and/or agreement restricting the redemption of the Company's stock.  
Furthermore, no promissory note shall be permitted if an exercise using a 
promissory note would be a violation of any law.  Any permitted promissory 
note shall be due and payable not more than five (5) years after the Option 
is exercised and interest shall be payable at least annually and be at least 
equal to the minimum interest rate necessary to avoid imputed interest 
pursuant to all applicable sections of the Code.  The Board shall have the 
authority to permit or require the Optionee to secure any promissory note 
used to exercise an Option with the shares of Stock acquired on exercise of 
the Option and/or with other collateral acceptable to the Company.

              (x)  Unless otherwise provided by the Board, an Option may not be
exercised by tender to the Company of shares of the Company's stock unless such
shares of the Company's stock either have been owned by the Optionee for more
than six (6) months or were not acquired, directly or indirectly, from the
Company.

              (y)  Unless otherwise provided by the Board, in the event the
Company at any time is subject to the regulations promulgated by the Board of
Governors of the Federal Reserve System or any other governmental entity
affecting the extension of credit in connection with the Company's securities,
any promissory note shall comply with such applicable regulations, and the
Optionee shall pay the unpaid principal and accrued interest, if any, to the
extent necessary to comply with such applicable regulations.

              (z)  The Company reserves, at any and all times, the right, in
the Company's sole and absolute discretion, to establish, decline to approve
and/or terminate any program and/or procedures for the exercise of Options by
means of an assignment of the proceeds of a sale of some or all of the shares of
Stock to be acquired upon such exercise.

    7.   STANDARD FORM OF STOCK OPTION AGREEMENT.  Unless otherwise provided 
for by the Board at the time an Option is granted or as otherwise provided 
for by this paragraph 7, all Options shall comply with and be subject to the 
terms and conditions set forth in the stock option agreement attached hereto 
as Exhibit A and incorporated herein by reference (the "Standard Option 
Agreement").

         (a)  MODIFICATIONS FOR INCENTIVE STOCK OPTIONS.  In the event the 
Option is designated as an Incentive Stock Option, the Standard Option 
Agreement for such Option shall be the Standard Option Agreement attached 
hereto as Exhibit A as modified as set forth below unless otherwise specified 
by the Board:

              (i)   The title and paragraph 2 of the Standard Option Agreement 
shall reflect the Option's status as an Incentive Stock Option.

              (ii)  Paragraph 7(f) of the Standard Option Agreement, regarding 
an 

                                       4
<PAGE>

Optionee who is a director or consultant but not an employee of the Company, 
shall be deleted and shall not apply to the Option.

              (iii) A new paragraph 13 shall be added to the Standard Option 
Agreement providing, among other things, that the Optionee give the Company 
notice of sales upon disqualifying dispositions of shares of Stock acquired 
pursuant to the exercise of Incentive Stock Options as follows:

         13.  NOTICE OF SALES UPON DISQUALIFYING DISPOSITION.  The Optionee
    shall dispose of the shares acquired pursuant to the Option only in 
    accordance with the provisions of this Option Agreement.  In addition, 
    the Optionee shall promptly notify the Chief Financial Officer of the 
    Company if the Optionee disposes of any of the shares acquired pursuant 
    to the Option within one (1) year from the date the Optionee exercises 
    all or part of the Option or within two (2) years of the date of grant 
    of the Option.  Until such time as the Optionee disposes of such shares 
    in a manner consistent with the provisions of this Option Agreement, the 
    Optionee shall hold all shares acquired pursuant to the Option in the 
    Optionee's name (and not in the name of any nominee) for the one-year 
    period immediately after exercise of the Option and the two-year period
    immediately after grant of the Option.  At any time during the one-year 
    or two-year periods set forth above, the Company may place a legend or 
    legends on any certificate or certificates representing shares acquired 
    pursuant to the Option requesting the transfer agent for the Company's 
    stock to notify the Company of any such transfers.  The obligation of 
    the Optionee to notify the Company of any such transfer shall continue 
    notwithstanding that a legend has been placed on the certificate or 
    certificates pursuant to the preceding sentence.

              (iv) Paragraph 13 of the Standard Option Agreement shall be 
renumbered as paragraph 14 and a new paragraph 14(a) shall be added to the 
Standard Option Agreement providing for a legend regarding Incentive Stock 
Options to be placed on each certificate representing shares of Stock 
acquired pursuant to the Option as follows:

    (a)  "THE SHARES EVIDENCED BY THIS CERTIFICATE WERE ISSUED BY THE
    CORPORATION TO THE REGISTERED HOLDER UPON EXERCISE OF AN INCENTIVE STOCK 
    OPTION AS DEFINED IN SECTION 422 OF THE INTERNAL REVENUE CODE OF 1986, 
    AS AMENDED.  THE TRANSFER AGENT FOR THE SHARES EVIDENCED HEREBY SHALL 
    NOTIFY THE CORPORATION IMMEDIATELY OF ANY TRANSFER OF THE SHARES BY 
    THE REGISTERED HOLDER HEREOF MADE ON OR BEFORE _______________.  THE 
    REGISTERED HOLDER SHALL HOLD ALL SHARES PURCHASED UNDER THE OPTION IN 
    THE REGISTERED HOLDER'S NAME (AND NOT IN THE NAME OF ANY NOMINEE) PRIOR 
    TO THIS DATE."

                                       5
<PAGE>

              (v)  Paragraph 15 of the Standard Option Agreement shall be 
renumbered as paragraph 16 and shall be modified to provide that amendments 
to the Standard Option Agreement may be made without the Optionee's consent 
if such amendments are required to enable an Option designated as an 
Incentive Stock Option to qualify as an Incentive Stock Option.

              (vi) The remaining paragraphs of such modified Standard Option 
Agreement for Incentive Stock Options shall be renumbered accordingly.

         (b)  STANDARD TERM FOR OPTIONS.  Unless otherwise provided for by 
the Board in the grant of an Option, any Option granted hereunder shall be 
exercisable for a term of ten (10) years.

    8.   AUTHORITY TO VARY TERMS.  The Board shall have the authority from 
time to time to vary the terms of the Standard Option Agreement either in 
connection with the grant of an individual Option or in connection with the 
authorization of a new standard form or forms; provided, however, that the 
terms and conditions of such revised or amended standard form or forms of 
stock option agreement shall be in accordance with the terms of the Plan.  
Such authority shall include, but not by way of limitation, the authority to 
grant Options which are immediately exercisable subject to the Company's 
right to repurchase any unvested shares of Stock acquired by an Optionee on 
exercise of an Option in the event such Optionee's employment with the 
Participating Company Group is terminated for any reason, with or without 
cause.  

    9.   EFFECT OF CHANGE IN STOCK SUBJECT TO PLAN.  Appropriate adjustments 
shall be made in the number and class of shares of Stock subject to the Plan, 
to the Per Optionee Limit set forth in paragraph 4 above, and to any 
outstanding Options and in the exercise price of any outstanding Options in 
the event of a stock dividend, stock split, reverse stock split, 
recapitalization, combination, reclassification, or like change in the 
capital structure of the Company.

    10.  TRANSFER OF CONTROL.  A "Transfer of Control" shall be deemed to 
have occurred in the event any of the following occurs with respect to the 
Control Company.  For purposes of applying this paragraph 10, the "Control 
Company" shall mean the Participating Company whose stock is subject to the 
Option.

         (a)  the direct or indirect sale or exchange by the stockholders of 
the Control Company of all or substantially all of the stock of the Control 
Company where the stockholders of the Control Company before such sale or 
exchange do not retain, directly or indirectly, at least a majority of the 
beneficial interest in the voting stock of the Control Company;

         (b)  a merger in which the stockholders of the Control Company 
before such merger do not retain, directly or indirectly, at least a majority 
of the beneficial interest in the voting stock of the Control Company; or

                                       6
<PAGE>

         (c)  the sale, exchange, or transfer (including, without limitation, 
pursuant to a liquidation or dissolution) of all or substantially all of the 
Control Company's assets (other than a sale, exchange, or transfer to one (1) 
or more corporations where the stockholders of the Control Company before 
such sale, exchange, or transfer retain, directly or indirectly, at least a 
majority of the beneficial interest in the voting stock of the corporation(s) 
to which the assets were transferred).

    In the event of a Transfer of Control, the surviving, continuing, 
successor, or purchasing corporation, as the case may be (the "Acquiring 
Corporation"), shall either assume the Company's rights and obligations under 
outstanding stock option agreements or substitute options for the Acquiring 
Corporation's stock for such outstanding Options.  In the event the Acquiring 
Corporation elects not to assume or substitute for such outstanding Options 
in connection with a merger described in (B) above or a sale of assets 
described in (C) above, the Board shall provide that any unexercisable and/or 
unvested portion of the outstanding Options shall be immediately exercisable 
and vested as of a date prior to the Transfer of Control, as the Board so 
determines.  The exercise and/or vesting of any Option that was permissible 
solely by reason of this paragraph 10 shall be conditioned upon the 
consummation of the Transfer of Control.  Any Options which are neither 
assumed by the Acquiring Corporation nor exercised as of the date of the 
Transfer of Control shall terminate effective as of the date of the Transfer 
of Control.

    11.  PROVISION OF INFORMATION.  Each Optionee shall be given access to 
information concerning the Company equivalent to that information generally 
made available to the Company's common stockholders.

    12.  OPTIONS NON-TRANSFERABLE.  During the lifetime of the Optionee, the 
Option shall be exercisable only by the Optionee.  No Option shall be 
assignable or transferable by the Optionee, except by will or by the laws of 
descent and distribution.

    13.  TRANSFER OF COMPANY'S RIGHTS.  In the event any Participating 
Company assigns, other than by operation of law, to a third person, other 
than another Participating Company, any of the Participating Company's rights 
to repurchase any shares of Stock acquired on the exercise of an Option, the 
assignee shall pay to the assigning Participating Company the value of such 
right as determined by the Company in the Company's sole discretion.  Such 
consideration shall be paid in cash.  In the event such repurchase right is 
exercisable at the time of such assignment, the value of such right shall be 
not less than the fair market value of the shares of Stock which may be 
repurchased under such right (as determined by the Company) minus the 
repurchase price of such shares.  The requirements of this paragraph 13 
regarding the minimum consideration to be received by the assigning 
Participating Company shall not inure to the benefit of the Optionee whose 
shares of Stock are being repurchased.  Failure of a Participating Company to 
comply with the provisions of this paragraph 13 shall not constitute a 
defense or otherwise prevent the exercise of the repurchase right by the 
assignee of such right.

                                       7
<PAGE>

    14.  TERMINATION OR AMENDMENT OF PLAN OR OPTIONS.  The Board, including 
any duly appointed committee of the Board, may terminate or amend the Plan or 
any Option at any time; provided, however, that without the approval of the 
Company's stockholders, there shall be (a) no increase in the total number of 
shares of Stock covered by the Plan (except by operation of the provisions of 
paragraph 9 above), (b) no change in the class of persons eligible to receive 
Incentive Stock Options and (c) no expansion in the class of persons eligible 
to receive nonqualified stock options.  In addition to the foregoing, the 
approval of the Company's stockholders shall be sought for any amendment to 
the Plan or an Option for which the Board deems stockholder approval 
necessary in order to comply with Rule 16b-3.  In any event, no amendment may 
adversely affect any then outstanding Option or any unexercised portion 
thereof, without the consent of the Optionee, unless such amendment is 
required to enable an Option designated as an Incentive Stock Option to 
qualify as an Incentive Stock Option.

                                       8
<PAGE>

                        NETWORK GENERAL CORPORATION
                                           
                    NONQUALIFIED STOCK OPTION AGREEMENT
                                           
                              (INITIAL OPTION)
                                           
    Network General Corporation (the "Company") granted to the individual 
named below an option to purchase certain shares of common stock of the 
Company, in the manner and subject to the provisions of this Option Agreement.

    1.   DEFINITIONS:

         (a)  "Optionee" shall mean _________.

         (b)  "Date of Option Grant" shall mean _______________.
 
         (c)  "Number of Option Shares" shall mean __________ shares of 
common stock of the Company as adjusted from time to time pursuant to 
paragraph 9 below.

         (d)  "Exercise Price" shall mean $________ per share as adjusted 
from time to time pursuant to paragraph 9 below.

         (e)  "Initial Exercise Date" shall be the date occurring one (1)
[YEAR/MONTH] after the Date of Option Grant.

         (f)  "Initial Vesting Date" shall be the date occurring one (1)
[YEAR/MONTH] after the Date of Option Grant.

         (g)  Determination of "Vested Ratio":

                                         VESTED RATIO

    Prior to Initial Vesting Date                  0

    On Initial Vesting Date,            [1/4 OR 1/48]
    provided the Optionee is
    continuously employed by 
    a Participating Company from
    the Date of Option Grant until
    the Initial Vesting Date

                                       9
<PAGE>

    PLUS

    For each full month                         1/48
    of the Optionee's
    continuous employment by a 
    Participating Company from the
    Initial Vesting Date

    In no event shall the Vested
    Ratio exceed 1/1.

         (h)  "Option Term Date" shall mean the date ten (10) years after the
Date of Option Grant.

         (i)  "Code" shall mean the Internal Revenue Code of 1986, as amended.

         (j)  "Company" shall mean Network General Corporation, a Delaware
corporation, and any successor corporation thereto.

         (k)  "Participating Company" shall mean (i) the Company and (ii) any 
present or future parent and/or subsidiary corporation of the Company while 
such corporation is a parent or subsidiary of the Company.  For purposes of 
this Option Agreement, a parent corporation and a subsidiary corporation 
shall be as defined in sections 424(e) and 424(f) of the Code.

         (l)  "Participating Company Group" shall mean at any point in time 
all corporations collectively which are then a Participating Company.

         (m)  "Plan" shall mean the Network General Corporation 1989 Stock 
Option Plan.

    2.   STATUS OF THE OPTION.  This Option is intended to be a nonqualified 
stock option and shall not be treated as an incentive stock option as 
described in section 422(b) of the Code.

    3.   ADMINISTRATION.  All questions of interpretation concerning this 
Option Agreement shall be determined by the Board of Directors of the Company 
(the "Board") and/or by a duly appointed committee of the Board having such 
powers as shall be specified by the Board.  Any subsequent references herein 
to the Board shall also mean the committee if such committee has been 
appointed and, unless the powers of the committee have been specifically 
limited, the committee shall have all of the powers of the Board granted in 
the Plan, including, without limitation, the power to terminate or amend the 
Plan at any time, subject to the terms of the Plan and any applicable 
limitations imposed by law.  All determinations by the Board shall be final 
and binding upon all persons having an interest in the Option.  Any officer 
of a Participating Company shall have the authority to act on behalf of the 
Company with respect to any matter, right, obligation, or election which is 
the responsibility of or which is allocated to the Company 

                                       10
<PAGE>

herein, provided the officer has apparent authority with respect to such 
matter, right, obligation, or election.

    4.   EXERCISE OF THE OPTION.

         (a)  RIGHT TO EXERCISE.  Except as provided in paragraph 4(f) below, 
the Option shall first become exercisable on the Initial Exercise Date.  The 
Option shall be exercisable on and after the Initial Exercise Date and prior 
to the termination of the Option in the amount equal to the Number of Option 
Shares multiplied by the Vested Ratio as set forth in paragraph 1 above less 
the number of shares previously acquired upon exercise of the Option.  In no 
event shall the Option be exercisable for more shares than the Number of 
Option Shares. Notwithstanding the foregoing, the Option may not be exercised 
more frequently than twice in any continuous twelve (12) month period; 
provided, however, that the foregoing restriction shall not apply so as to 
prevent an exercise (i) following the Optionee's termination of employment as 
set forth in paragraph 7 below or (ii) during the thirty (30) day periods 
immediately preceding and following an Ownership Change as defined in 
paragraph 8 below.

         (b)  METHOD OF EXERCISE.  The Option shall be exercisable by written 
notice to the Company which shall state the election to exercise the Option, 
the number of shares for which the Option is being exercised and such other 
representations and agreements as to the Optionee's investment intent with 
respect to such shares as may be required pursuant to the provisions of this 
Option Agreement.  Such written notice shall be signed by the Optionee and 
shall be delivered in person or by certified or registered mail, return 
receipt requested, to the Chief Financial Officer of the Company, or other 
authorized representative of the Participating Company Group, prior to the 
termination of the Option as set forth in paragraph 6 below, accompanied by 
(i) full payment of the exercise price for the number of shares being 
purchased and (ii) an executed copy, if required herein, of the then current 
form of joint escrow instructions referenced below.

         (c)  FORM OF PAYMENT OF OPTION PRICE.  Such payment shall be made 
(i) in cash, by check, or cash equivalent, (ii) by tender to the Company of 
shares of the Company's common stock owned by the Optionee having a value not 
less than the option price, which either have been owned by the Optionee for 
more than six (6) months or were not acquired, directly or indirectly, from 
the Company, (iii) by cash for a portion of the option price and the 
Optionee's promissory note for the balance of the option price, (iv) by 
Immediate Sales Proceeds, as defined below, or (v) by any combination of the 
foregoing. Notwithstanding the foregoing, the Option may not be exercised by 
tender to the Company of shares of the Company's common stock to the extent 
such tender of stock would constitute a violation of the provisions of any 
law, regulation and/or agreement restricting the redemption of the Company's 
common stock. Unless otherwise specified by the Board at the time the Option 
is granted, the promissory note permitted in clause (iii) above shall not 
exceed the amount permitted by law to be paid by a promissory note and shall 
be a full recourse note in a form satisfactory to the Company, with principal 
payable in equal annual installments with the last installment due four (4) 
years from the date the Option is exercised.  Interest on the principal 
balance of the promissory note shall be payable in annual 

                                       11
<PAGE>

installments at the minimum interest rate necessary to avoid imputed interest 
pursuant to all applicable sections of the Code.  Such recourse promissory 
note shall be secured by the shares of stock acquired pursuant to the then 
current form of security agreement as approved by the Company.  In the event 
the Company at any time is subject to the regulations promulgated by the 
Board of Governors of the Federal Reserve System or any other governmental 
entity affecting the extension of credit in connection with the Company's 
securities, any promissory note shall comply with such applicable 
regulations, and the Optionee shall pay the unpaid principal and accrued 
interest, if any, to the extent necessary to comply with such applicable 
regulations.  Except as the Company in its sole discretion shall determine, 
the Optionee shall pay the unpaid principal balance of the promissory note 
and any accrued interest thereon upon termination of the Optionee's 
employment with the Participating Company Group for any reason, with or 
without cause.  "Immediate Sales Proceeds" shall mean the assignment in form 
acceptable to the Company of the proceeds of a sale of some or all of the 
shares acquired upon the exercise of the Option pursuant to a program and/or 
procedure approved by the Company (including, without limitation, through an 
exercise complying with the provisions of Regulation T as promulgated from 
time to time by the Board of Governors of the Federal Reserve System).  The 
Company reserves, at any and all times, the right, in the Company's sole and 
absolute discretion, to decline to approve any such program and/or procedure.

         (d)  WITHHOLDING.  At the time the Option is exercised, in whole or 
in part, or at any time thereafter as requested by the Company, the Optionee 
shall make adequate provision for foreign, federal and state tax withholding 
obligations of the Company, if any, which arise in connection with the 
Option, including, without limitation, obligations arising upon (i) the 
exercise, in whole or in part, of the Option, (ii) the transfer, in whole or 
in part, of any shares acquired on exercise of the Option, (iii) the 
operation of any law or regulation providing for the imputation of interest, 
or (iv) the lapsing of any restriction with respect to any shares acquired on 
exercise of the Option.

         (e)  CERTIFICATE REGISTRATION.  The certificate or certificates for 
the shares as to which the Option shall be exercised shall be registered in 
the name of the Optionee, or, if applicable, the heirs of the Optionee.

         (f)  RESTRICTIONS ON GRANT OF THE OPTION AND ISSUANCE OF SHARES.  
The grant of the Option and the issuance of the shares upon exercise of the 
Option shall be subject to compliance with all applicable requirements of 
federal or state law with respect to such securities.  The Option may not be 
exercised if the issuance of shares upon such exercise would constitute a 
violation of any applicable federal or state securities laws or other law or 
regulations.  In addition, no Option may be exercised unless (i) a 
registration statement under the Securities Act of 1933, as amended (the 
"Securities Act"), shall at the time of exercise of the Option be in effect 
with respect to the shares issuable upon exercise of the Option or (ii) in 
the opinion of legal counsel to the Company, the shares issuable upon 
exercise of the Option may be issued in accordance with the terms of an 
applicable exemption from the registration requirements of the Securities 
Act.  As a condition to the exercise of the Option, the Company may require 
the Optionee to satisfy any qualifications that may be necessary or 
appropriate, to evidence 

                                       12
<PAGE>

compliance with any applicable law or regulation and to make any 
representation or warranty with respect thereto as may be requested by the 
Company.

         (g)  FRACTIONAL SHARES.  The Company shall not be required to issue
fractional shares upon the exercise of the Option.

    5.   NON-TRANSFERABILITY OF THE OPTION.  The Option may be exercised during
the lifetime of the Optionee only by the Optionee and may not be assigned or
transferred in any manner except by will or by the laws of descent and
distribution.

    6.   TERMINATION OF THE OPTION.  The Option shall terminate and may no 
longer be exercised on the first to occur of (a) the Option Term Date as 
defined above, (b) the last date for exercising the Option following 
termination of employment as described in paragraph 7 below, or (c) upon a 
Transfer of Control as described in paragraph 8 below.

    7.   TERMINATION OF EMPLOYMENT.

         (a)  TERMINATION OF THE OPTION.  If the Optionee ceases to be an 
employee of the Participating Company Group for any reason except death or 
disability within the meaning of section 422(c) of the Code, the Option, to 
the extent unexercised and exercisable by the Optionee on the date on which 
the Optionee ceased to be an employee, may be exercised by the Optionee 
within three (3) months after the date on which the Optionee's employment 
terminates, but in any event no later than the Option Term Date.  If the 
Optionee's employment with the Company is terminated because of the death of 
the Optionee or disability of the Optionee within the meaning of section 
422(c) of the Code, the Option may be exercised by the Optionee (or the 
Optionee's legal representative) at any time prior to the expiration of 
twelve (12) months from the date the Optionee's employment terminated, but in 
any event no later than the Option Term Date.  The Optionee's employment 
shall be deemed to have terminated on account of death if the Optionee dies 
within one (1) month after the Optionee's termination of employment.  Except 
as the Company and the Optionee otherwise agree, exercise of the Option 
pursuant to this paragraph 7(a) may not be made by delivery of a promissory 
note as provided in paragraph 4(c)(iii) above.

         (b)  TERMINATION OF EMPLOYMENT DEFINED.  For purposes of this 
paragraph 7, the Optionee's employment shall be deemed to have terminated 
either upon an actual termination of employment or upon the Optionee's 
employer ceasing to be a Participating Company.

         (c)  EXERCISE PREVENTED BY LAW.  Except as provided in this 
paragraph 7, the Option shall terminate and may not be exercised after the 
Optionee's employment with the Participating Company Group terminates unless 
the exercise of the Option in accordance with this paragraph 7 is prevented 
by the provisions of paragraph 4(f) above.  If the exercise of the Option is 
so prevented, the Option shall remain exercisable until three (3) months 
after the date the Optionee is notified by the Company that the Option is 
exercisable, but in any event no later than the Option Term Date.

                                       13
<PAGE>

         (d)  OPTIONEE SUBJECT TO SECTION 16(b).  Notwithstanding the 
foregoing, if the exercise of the Option within the applicable time periods 
set forth above would subject the Optionee to suit under Section 16(b) of the 
Securities Exchange Act of 1934, as amended, the Option shall remain 
exercisable until the earliest to occur of (i) the tenth (l0th) day following 
the date on which the Optionee would no longer be subject to such suit, (ii) 
the one hundred and ninetieth (l90th) day after the Optionee's termination of 
employment, or (iii) the Option Term Date.

         (e)  LEAVE OF ABSENCE.  For purposes hereof, the Optionee's 
employment with the Participating Company Group shall not be deemed to 
terminate if the Optionee takes any military leave, sick leave, or other bona 
fide leave of absence approved by the Company of ninety (90) days or less.  
In the event of a leave in excess of ninety (90) days, the Optionee's 
employment shall be deemed to terminate on the ninety-first (91st) day of the 
leave unless the Optionee's right to reemployment with the Participating 
Company Group remains guaranteed by statute or contract.  Notwithstanding the 
foregoing, however, a leave of absence shall be treated as employment for 
purposes of determining the Optionee's Vested Ratio if and only if the leave 
of absence is designated by the Company as (or required by law to be) a leave 
for which vesting credit is given.

         (f)  APPLICATION TO DIRECTORS AND CONSULTANTS.  For purposes of this 
Option Agreement, in the event the Optionee is a director or consultant but 
not an employee of a Participating Company at the time the Option is granted, 
termination of the Optionee's status as a director or consultant of the 
Participating Company shall be deemed to be termination of the Optionee's 
employment.

    8.   OWNERSHIP CHANGE AND TRANSFER OF CONTROL.  For purposes hereof, the 
"Control Company" shall mean the Participating Company whose stock is subject 
to the Option.  An "Ownership Change" shall be deemed to have occurred in the 
event any of the following occurs with respect to the Control Company:

         (a)  the direct or indirect sale or exchange by the shareholders of 
the Control Company of all or substantially all of the stock of the Control 
Company;

         (b)  a merger in which the Control Company is a party; or

         (c)  the sale, exchange, or transfer (including, without limitation, 
pursuant to a liquidation or dissolution) of all or substantially all of the 
Control Company's assets (other than a sale, exchange, or transfer to one (1) 
or more corporations where the shareholders of the Control Company before 
such sale, exchange, or transfer retain, directly or indirectly, at least a 
majority of the beneficial interest in the voting stock of the corporation(s) 
to which the assets were transferred).

    A "Transfer of Control" shall mean an Ownership Change in which the 
shareholders of the Control Company before such Ownership Change do not 
retain, directly or indirectly, at least 

                                       14
<PAGE>

a majority of the beneficial interest in the voting stock of the Control 
Company.

    In the event of a Transfer of Control, the surviving, continuing, 
successor, or purchasing corporation, as the case may be (the "Acquiring 
Corporation"), shall assume the Company's rights and obligations under this 
Option Agreement or substitute an option for the Acquiring Corporation's 
stock for the Option.  In the event the Acquiring Corporation elects not to 
assume the Company's rights and obligations under this Option Agreement or 
substitute for the Option in connection with a Transfer of Control involving 
an Ownership Change described in (b) or (c) above, the Board shall provide 
that any unexercised portion of the Option shall be fully exercisable as of a 
date prior to the Transfer of Control, as the Board so determines.  The 
Option shall terminate effective as of the date of the Transfer of Control to 
the extent that the Option is neither assumed by the Acquiring Corporation 
nor exercised as of the date of the Transfer of Control.

    9.   EFFECT OF CHANGE IN STOCK SUBJECT TO THE OPTION.  Appropriate 
adjustments shall be made in the number, exercise price and class of shares 
of stock subject to the Option in the event of a stock dividend, stock split, 
reverse stock split, combination, reclassification, or like change in the 
capita1 structure of the Company.  In the event a majority of the shares 
which are of the same class as the shares that are subject to the Option are 
exchanged for, converted into, or otherwise become (whether or not pursuant 
to an Ownership Change) shares of another corporation (the "New Shares"), the 
Company may unilaterally amend the Option to provide that the Option is 
exercisable for New Shares.  In the event of any such amendment, the number 
of shares and the exercise price shall be adjusted in a fair and equitable 
manner.

    10.  RIGHTS AS A SHAREHOLDER OR EMPLOYEE.  The Optionee shall have no 
rights as a shareholder with respect to any shares covered by the Option 
until the date of the issuance of a certificate or certificates for the 
shares for which the Option has been exercised.  No adjustment shall be made 
for dividends or distributions or other rights for which the record date is 
prior to the date such certificate or certificates are issued, except as 
provided in paragraph 9 above.  Nothing in the Option shall confer upon the 
Optionee any right to continue in the employ of a Participating Company or 
interfere in any way with any right of the Participating Company Group to 
terminate the Optionee's employment at any time.

    11.  ESCROW.

         (a)  ESTABLISHMENT OF ESCROW.  To insure shares which are security 
for any promissory note will be available for repurchase, the Company may 
require the Optionee to deposit the certificate or certificates evidencing 
the shares which the Optionee purchases upon exercise of the Option with an 
agent designated by the Company under the terms and conditions of a security 
agreement approved by the Company.  If the Company does not require such 
deposit as a condition of exercise of the Option, the Company reserves the 
right at any time to require the Optionee to so deposit the certificate or 
certificates in escrow. The Company shall bear the expenses of the escrow.

         (b)  DELIVERY OF SHARES TO OPTIONEE.  As soon as practicable after 
full 

                                       15
<PAGE>

repayment on any promissory note secured by the shares in escrow, but not 
more frequently than twice each year, the agent shall deliver to the Optionee 
the shares no longer security for any promissory note.

    12.  STOCK DIVIDENDS SUBJECT TO OPTION AGREEMENT.  If, from time to time, 
there is any stock dividend, stock split, or other change in the character or 
amount of any of the outstanding stock of the corporation the stock of which 
is subject to the provisions of this Option Agreement, then in such event any 
and all new substituted or additional securities to which the Optionee is 
entitled by reason of the Optionee's ownership of the shares acquired upon 
exercise of the Option shall be immediately subject to any security interest 
held by the Company with the same force and effect as the shares subject to 
such security interest immediately before such event.

    13.  LEGENDS.  The Company may at any time place legends referencing any 
applicable federal or state securities law restrictions on all certificates 
representing shares of stock subject to the provisions of this Option 
Agreement. The Optionee shall, at the request of the Company, promptly 
present to the Company any and all certificates representing shares acquired 
pursuant to the Option in the possession of the Optionee in order to 
effectuate the provisions of this paragraph.

    14.  BINDING EFFECT.  This Option Agreement shall inure to the benefit of 
and be binding upon the parties hereto and their respective heirs, executors, 
administrators, successors and assigns.

    15.  TERMINATION OR AMENDMENT.  The Board, including any duly appointed 
committee of the Board, may terminate or amend the Plan and/or the Option at 
any time; provided, however, that no such termination or amendment may 
adversely affect the Option or any unexercised portion hereof without the 
consent of the Optionee.

    16.  INTEGRATED AGREEMENT.  This Option Agreement constitutes the entire 
understanding and agreement of the Optionee and the Participating Company 
Group with respect to the subject matter contained herein, and there are no 
agreements, understandings, restrictions, representations, or warranties 
among the Optionee and the Company other than those as set forth or provided 
for herein.  To the extent contemplated herein, the provisions of this Option 
Agreement shall survive any exercise of the Option and shall remain in full 
force and effect.

                                       16
<PAGE>

    17.  APPLICABLE LAW.  This Option Agreement shall be governed by the laws 
of the State of California as such laws are applied to agreements between 
California residents entered into and to be performed entirely within the 
State of California.

                                  NETWORK GENERAL CORP.



                                  ----------------------------
                                  By:  
                                  Title:    


    The Optionee represents that the Optionee is familiar with the terms and 
provisions of this Option Agreement, and hereby accepts the Option subject to 
all of the terms and provisions thereof.  The Optionee hereby agrees to 
accept as binding, conclusive and final all decisions or interpretations of 
the Board upon any questions arising under this Option Agreement.


- -------------------------         ----------------------------------
Date                              Optionee

                                  17

<PAGE>
                                EXHIBIT 99.2
                                      
                        NETWORK GENERAL CORPORATION

                     1989 EMPLOYEE STOCK PURCHASE PLAN

                    (As Amended Through August 8, 1997)

     A.  PURPOSE.  The Network General Corporation 1989 Employee Stock 
Purchase Plan (the "Plan") is established to provide eligible employees of 
Network General Corporation, a Delaware corporation ("Network General"), and 
any current or future parent or subsidiary corporations of Network General 
which the Board of Directors of Network General (the "Board") determines 
should be included in the Plan (collectively referred to as the "Company"), 
with an opportunity to acquire a proprietary interest in the Company by the 
purchase of the common stock of Network General.  (Network General and any 
parent or subsidiary corporation designated by the Board as a participating 
corporation shall be individually referred to herein as a "Participating 
Company."  For purposes of the Plan, a parent corporation and a subsidiary 
corporation shall be as defined in sections 424(e) and 424(f) of the Internal 
Revenue Code of 1986, as amended. (the "Code").)

                                       1
<PAGE>

    It is intended that the Plan shall qualify as an "employee stock purchase 
plan" under section 423 of the Code (including any future amendments or 
replacements of such section), and the Plan shall be so construed.  Any term 
not expressly defined in the Plan but defined for purposes of section 423 of 
the Code shall have the same definition herein.

    An employee participating in the Plan (a "Participant") may withdraw such 
Participant's accumulated payroll deductions (if any) therein at any time 
during an Offering Period (as defined below).  Accordingly, each Participant 
is, in effect, granted an option pursuant to the Plan (a "Purchase Right") 
which may or may not be exercised at the end of an Offering Period and which 
is intended to qualify as an option described in section 423 of the Code.

     B.  ADMINISTRATION.  The Plan shall be administered by the Board and/or 
by a duly appointed committee of the Board having such powers as shall be 
specified by the Board.  Any subsequent references to the Board shall also 
mean the committee if a committee has been appointed.  The Board shall have 
the sole and absolute discretion to determine from time to time what parent 
corporations and/or subsidiary corporations shall be Participating Companies. 
All questions of interpretation of the Plan or of any Purchase Right shall 
be determined by the Board and shall be final and binding upon all persons 
having an interest in the Plan and/or any Purchase Right.  Subject to the 
provisions of the Plan, the Board shall determine all of the relevant terms 
and conditions of Purchase Rights granted pursuant to the Plan; provided, 
however, that all Participants granted Purchase Rights pursuant to the Plan 
shall have the same rights and privileges within the meaning of section 
423(b)(5) of the Code.  All expenses incurred in connection with the 
administration of the Plan shall be paid by the Company.

     C.  SHARE RESERVE.  The maximum number of shares which may be issued 
under the Plan shall be 2,000,000 shares of Network General's authorized but 
unissued common stock or treasury shares of common stock (the "Shares").  In 
the event that any Purchase Right for any reason expires or is cancelled or 
terminated, the Shares allocable to the unexercised portion of such Purchase 
Right may again be subjected to a Purchase Right.

     D.  ELIGIBILITY.  Any employee of a Participating Company is eligible to 
participate in the Plan except the following:

              employees who have not completed one (1) month of continuous 
employment with the Company as of the commencement of an Offering Period;

              employees who are customarily employed by the Company for less 
than twenty (20) hours a week;

              employees whose customary employment is for not more than five 
(5) months in any calendar year; and

              employees who own or hold options to purchase or who, as a 
result of participation in this Plan, would own or hold options to purchase, 
stock of the Company possessing five percent (5%) or more of the total 
combined voting power or value of all classes 

                                       2
<PAGE>

of stock of the Company within the meaning of section 423(b)(3) of the Code.

     E.  OFFERING DATES.

              OFFERING PERIODS.  Except as otherwise set forth below, the 
Plan shall be implemented by sequential offerings (individually an 
"Offering") of six (6) months duration (an "Offering Period").  Prior to 
August 1, 1992, an Offering Period shall commence on the first day of January 
and end on the last day of June of the same year.  An Offering Period shall 
also commence on the first day of July of each year and end on the last day 
of December of the same year.  The first Offering Period shall commence on 
the effective date of a registration statement on Form S-1 under the 
Securities Act of 1933, as amended, which covers the common stock of Network 
General, whether or not such registration statement covers some or all of the 
Shares issuable under the Plan. Effective as of August 1, 1992 and in lieu of 
the foregoing, an Offering Period shall commence on the first day of February 
of each year and end on the last day of July of the same year.  An Offering 
Period shall also commence on the first day of August of each year and end on 
the last day of January of the succeeding year.  Notwithstanding the 
foregoing, the Board may establish a different term for one or more Offerings 
and/or different commencing and/or ending dates for such Offerings.  An 
employee who becomes eligible to participate in the Plan after an Offering 
Period has commenced shall not be eligible to participate in such Offering 
but may participate in any subsequent Offering provided such employee is 
still eligible to participate in the Plan as of the commencement of any such 
subsequent Offering.  The first day of an Offering Period shall be the 
"Offering Date" for such Offering Period.  In the event the first and/or last 
day of an Offering Period is not a business day, the Company shall specify 
the business day that will be deemed the first or last day, as the case may 
be, of the Offering Period.

              GOVERNMENTAL APPROVAL; STOCKHOLDER APPROVAL.  Notwithstanding 
any other provision of the Plan to the contrary, any Purchase Right granted 
pursuant to the Plan shall be subject to (i) obtaining all necessary 
governmental approvals and/or qualifications of the sale and/or issuance of 
the Purchase Rights and/or the Shares, and (ii) obtaining stockholder 
approval of the Plan. Notwithstanding the foregoing, stockholder approval 
shall not be necessary in order to grant any Purchase Right granted on the 
Offering Date of either of the Plan's first Offering Period; provided, 
however, that the exercise of any such Purchase Right shall be subject to 
obtaining stockholder approval of the Plan.

     F.  PARTICIPATION IN THE PLAN.

              INITIAL PARTICIPATION.  An eligible employee shall become a 
participant in the Plan (a "Participant") on the first Offering Date after 
satisfying the eligibility requirements and delivering to the Company not 
later than the close of business on the last business day before such 
Offering Date (the "Subscription Date") a subscription agreement indicating 
the employee's election to participate in the Plan and authorizing payroll 
deductions.  An eligible employee who does not deliver a subscription 
agreement to the Company on or before the Subscription Date shall not 
participate in the Plan for that Offering Period or for any subsequent 
Offering Period unless such eligible employee subsequently enrolls in the 
Plan by complying with the provisions of paragraph 4 and by filing a 
subscription agreement with the Company on or before the Subscription Date 
for such subsequent Offering Period.  The Company may, from time to time, 

                                       3
<PAGE>

change the Subscription Date as deemed advisable by the Company in its sole 
discretion for proper administration of the Plan.

              CONTINUED PARTICIPATION.  Participation in the Plan shall 
continue until (i) the Participant ceases to be eligible as provided in 
paragraph 4, (ii) the Participant withdraws from the Plan pursuant to 
paragraph 11, or (iii) the Participant terminates employment as provided in 
paragraph 12. At the end of an Offering Period, each Participant in such 
terminating Offering Period shall automatically participate in the first 
subsequent Offering Period according to the same elections contained in the 
Participant's subscription agreement effective for the Offering Period which 
has just ended, provided such Participant is still eligible to participate in 
the Plan as provided in paragraph 4.  However, a Participant may file a 
subscription agreement with respect to such subsequent Offering Period if the 
Participant desires to change any of the Participant's elections contained in 
the Participant's then effective subscription agreement.

     G.  RIGHT TO PURCHASE SHARES.  During an Offering Period each 
Participant in such Offering Period shall have a Purchase Right consisting of 
the right to purchase five thousand (5,000) Shares.

     H.  PURCHASE PRICE.  The purchase price at which Shares may be acquired 
at the end of an Offering pursuant to the exercise of all or any portion of a 
Purchase Right granted under the Plan (the "Offering Exercise Price") shall 
be set by the Board; provided, however, that the purchase price shall not be 
less than eighty-five percent (85%) of the lesser of (a) the fair market 
value of the Shares on the Offering Date of such Offering Period, or (b) the 
fair market value of the Shares at the time of exercise of all or any portion 
of the Purchase Right.  Unless otherwise provided by the Board prior to the 
commencement of an Offering Period, the Offering Exercise Price shall be 
eighty-five percent (85%) of the lesser of (a) the fair market value of the 
Shares on the Offering Date of such Offering Period or (b) the fair market 
value of the Shares at the time of exercise of all or any portion of the 
Purchase Right.  The fair market value of the Shares on the Offering Date or 
on the date of exercise will be the closing price quoted on the National 
Association of Securities Dealers Automated Quotation System on such date; 
however the fair market value of the Shares on the first Offering Date will 
be the offering price for the common stock of Network General as registered 
on the Form S-1 filed with the Securities and Exchange Commission.

     I.  PAYMENT OF PURCHASE PRICE.  Shares which are acquired pursuant to 
the exercise of all or any portion of a Purchase Right for a given Offering 
Period may be paid for only by means of payroll deductions from the 
Participant's Compensation accumulated during the Offering Period.  For 
purposes of the Plan, a Participant's "Compensation" with respect to an 
Offering shall include all amounts paid in cash and includable as "wages" 
subject to tax under section 3101(a) of the Code without applying the dollar 
limitation of section 3121(a) of the Code.  Accordingly, Compensation shall 
include, without limitation, salaries, commissions, bonuses, overtime, and 
salary deferrals under section 401(k) of the Code.  Notwithstanding the 
foregoing, Compensation shall not include reimbursements of expenses, 
allowances, or any amount deemed received without the actual transfer of cash 
or any amounts directly or indirectly paid pursuant to the Plan or any other 
stock purchase or stock option plan.  Except as set forth below. the amount 
of Compensation to be withheld from a Participant's Compensation during each 
pay period shall 

                                       4
<PAGE>

be determined by the Participant's subscription agreement.

              ELECTION TO DECREASE WITHHOLDING.  During an Offering Period, a 
Participant may elect to decrease the amount withheld from his or her 
Compensation by filing an amended subscription agreement with the Company on 
or before the Change Notice Date.  The "Change Notice Date" shall initially 
be the seventh (7th) day prior to the end of the first pay period for which 
such election is to be effective; however, the Company may change such Change 
Notice Date from time to time.  A Participant may not elect to increase the 
amount withheld from the Participant's Compensation during an Offering Period.

              LIMITATIONS ON PAYROLL WITHHOLDING.  The amount of payroll 
withholding with respect to the Plan for any Participant during any pay 
period shall not exceed ten percent (10%) of the Participant's Compensation 
for such pay period.  Amounts shall be withheld in whole percentages only and 
shall be reduced by any amounts contributed by the Participant and applied to 
the purchase of Company stock pursuant to any other employee stock purchase 
plan qualifying under section 423 of the Code.

              PAYROLL WITHHOLDING.  Payroll deductions shall commence on the 
first payday following the Offering Date and shall continue to the end of the 
Offering Period unless sooner altered or terminated as provided in the Plan.

              PARTICIPANT ACCOUNTS.  Individual accounts shall be maintained 
for each Participant.  All payroll deductions from a Participant's 
Compensation shall be credited to such account and shall be deposited with 
the general funds of the Company.  All payroll deductions received or held by 
the Company may be used by the Company for any corporate purpose.

              NO INTEREST PAID.  Interest shall not be paid on sums withheld 
from a Participant's Compensation.

              EXERCISE OF PURCHASE RIGHT.  On the last day of an Offering 
Period, each Participant who has not withdrawn from the Offering or whose 
participation in the Offering has not terminated on or before such last day 
shall automatically acquire pursuant to the exercise of the Participant's 
Purchase Right the number of whole Shares arrived at by dividing the total 
amount of the Participant's accumulated payroll deductions for the Offering 
Period by the Offering Exercise Price; provided, however, in no event shall 
the number of Shares purchased by the Participant exceed the number of Shares 
subject to the Participant's Purchase Right.  No Shares shall be purchased on 
behalf of a Participant whose participation in the Offering or the Plan has 
terminated on or before the date of such exercise.

              RETURN OF CASH BALANCE.  Any cash balance remaining in the 
Participant's account shall be refunded to the Participant as soon as 
practical after the last day of the Offering Period.  In the event the cash 
to be returned to a Participant pursuant to the preceding sentence is an 
amount less than the amount necessary to purchase a whole Share, the Company 
may establish procedures whereby such cash is maintained in the Participant's 
account and applied toward the purchase of Shares in the subsequent Offering 
Period.

                                       5
<PAGE>

              WITHHOLDING.  At the time the Purchase Right is exercised, in 
whole or in part, or at the time some or all of the Shares are disposed of, 
the Participant shall make adequate provision for foreign, federal and state 
tax withholding obligations of the Company, if any, which arise upon exercise 
of the Purchase Right and/or upon disposition of Shares.  The Company may, 
but shall not be obligated to, withhold from the Participant's Compensation 
the amount necessary to meet such withholding obligations.

              COMPANY ESTABLISHED PROCEDURES.  The Company may, from time to 
time, establish (i) a minimum required withholding amount for participation 
in any Offering, (ii) limitations on the frequency and/or number of changes 
in the amount withheld during an Offering, (iii) an exchange ratio applicable 
to amounts withheld in a currency other than U.S. dollars, (iv) payroll 
withholding in excess of or less than the amount designated by a Participant 
in order to adjust for delays or mistakes in the Company's processing of 
subscription agreements, and/or (v) such other limitations or procedures as 
deemed advisable by the Company in the Company's sole discretion which are 
consistent with the Plan and section 423 of the Code.

              EXPIRATION OF PURCHASE RIGHT.  Any portion of a Participant's 
Purchase Right remaining unexercised after the end of the Offering Period to 
which such Purchase Right relates shall expire immediately upon the end of 
such Offering Period.

     J.  LIMITATIONS ON PURCHASE OF SHARES; RIGHTS AS A STOCKHOLDER.

              FAIR MARKET VALUE LIMITATION.  Notwithstanding any other 
provision of the Plan, no Participant shall be entitled to purchase Shares 
under the Plan (and any other employee stock purchase plan sponsored by 
Network General or a parent or subsidiary corporation of Network General) at 
a rate which exceeds $25,000 in fair market value, determined as of the 
Offering Date for each Offering Period (or such other limit as may be imposed 
by the Code), for each calendar year in which the Participant participates in 
the Plan (and any other employee stock purchase plan sponsored by Network 
General or a parent or subsidiary corporation of Network General).

              ALLOCATION OF SHARES.  In the event the number of Shares which 
might be purchased by all Participants in the Plan exceeds the number of 
Shares available in the Plan, the Company shall make a pro rata allocation of 
the remaining Shares in as uniform a manner as shall be practicable and as 
the Company shall determine to be equitable.

              RIGHTS AS A STOCKHOLDER AND EMPLOYEE.  A Participant shall have 
no rights as a stockholder by virtue of the Participant's participation in 
the Plan until the date of the issuance of a stock certificate(s) for the 
Shares being purchased pursuant to the exercise of the Participant's Purchase 
Right. No adjustment shall be made for cash dividends or distributions or 
other rights for which the record date is prior to the date such stock 
certificate(s) are issued.  Nothing herein shall confer upon a Participant 
any right to continue in the employ of the Company or interfere in any way 
with any right of the Company to terminate the Participant's employment at 
any time.

     K.  WITHDRAWAL.

                                       6
<PAGE>

              WITHDRAWAL FROM AN OFFERING.  A Participant may withdraw from 
an Offering by signing a written notice of withdrawal on a form provided by 
the Company for such purpose and delivering such notice to the Company at any 
time prior to the end of an Offering Period.  Unless otherwise indicated by 
the Participant, withdrawal from an Offering shall not result in a withdrawal 
from the Plan or any succeeding Offering therein.  A Participant is 
prohibited from again participating in an Offering upon withdrawal from such 
Offering.  The Company may, from time to time, impose a requirement that the 
notice of withdrawal be on file with the Company for a reasonable period 
prior to the effectiveness of the Participant's withdrawal from an Offering.

              WITHDRAWAL FROM THE PLAN.  A Participant may withdraw from the 
Plan by signing a written notice of withdrawal on a form provided by the 
Company for such purpose and delivering such notice to the Company.  In the 
event a Participant voluntarily elects to withdraw from the Plan, the 
Participant may not resume participation in the Plan during the same Offering 
Period, but may participate in any subsequent Offering under the Plan by 
again satisfying the requirements of paragraph 6.  The Company may impose, 
from time to time, a requirement that the notice of withdrawal be on file 
with the Company for a reasonable period prior to the effectiveness of the 
Participant's withdrawal from the Plan.

              LIMITATION FOLLOWING CESSATION OF PARTICIPATION BY CERTAIN 
EMPLOYEES.  Notwithstanding any provision herein to the contrary, an employee 
shall be prohibited from again participating in the Plan for at least six 
months after the date on which such employee is deemed to "cease 
participation" in the Plan (as defined below) if such employee is:

              (1)  an officer or director of Network General subject to 
Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange 
Act"); and 

              (2)  deemed to have "ceased participation" in the Plan within 
the meaning of Rule 16b-3, promulgated under the Exchange Act, as amended 
from time to time or any successor rule or regulation ("Rule 16b-3") as a 
consequence of such employee's election to (i) withdraw from an Offering 
pursuant to paragraph 11(a) above, (ii) withdraw from the Plan pursuant to 
paragraph 11(b) above, or (iii) stop or decrease to a nominal level the 
amount withheld from such employee's Compensation pursuant to paragraph 9(a) 
above.

              WAIVER OF WITHDRAWAL RIGHT.  The Company may, from time to 
time, establish a procedure pursuant to which a Participant may elect (an 
"Irrevocable Election"), at least six (6) months prior to the last day of an 
Offering Period, to have all payroll deductions accumulated in such 
Participant's Plan account as of such date applied to purchase shares under 
the Plan, and (1) to waive such Participant's right to withdraw from the 
Offering or the Plan and (2) to waive such Participant's right to increase, 
decrease, or cease payroll deductions under the Plan from such Participant's 
Compensation during the Offering Period ending on such date.  An Irrevocable 
Election shall be made in writing on a form provided by the Company for such 
purpose and must be delivered to the Company not later than the close of 
business on the day preceding the date which is six (6) months before the 
last day of the Offering Period for which 

                                       7
<PAGE>

such election is to be first effective.

     L.  TERMINATION OF EMPLOYMENT.  Termination of a Participant's 
employment with the Company on account of either death or disability shall 
terminate the Participant's participation in the Plan at the end of the 
Offering Period in which the Participant's death or disability occurs.

    Termination of a Participant's employment with the Company for any reason 
other than death or disability, including the failure of a Participant to 
remain an employee eligible to participate in the Plan, shall terminate the 
Participant's participation in the Plan at the end of thirty (30) days after 
such termination of employment.  A Participant whose participation has been 
so terminated may again become eligible to participate in the Plan by again 
satisfying the requirements of paragraphs 4 and 6.

    In the event of termination of a Participant's employment on account of 
the Participant's death, the Participant's legal representative shall have 
the right to withdraw from the Plan according to the terms of paragraph 11 
prior to the time the deceased Participant's participation in the Plan 
terminates.

     M.  REPAYMENT OF PAYROLL DEDUCTIONS.  In the event a Participant's 
interest in the Plan or any Offering therein is terminated for any reason, 
the balance held in the Participant's account shall be returned as soon as 
practicable after such termination to the Participant (or, in the case of the 
Participant's death, to the Participant's legal representative) and all of 
the Participant's rights under the Plan shall terminate.  Such account 
balance may not be applied to any other Offering under the Plan.  No interest 
shall be paid on sums returned to a Participant pursuant to this paragraph 13.

     N.  TRANSFER OF CONTROL.  A "Transfer of Control" shall be deemed to 
have occurred in the event any of the following occurs with respect to the 
Control Company.  For purposes of applying this paragraph 14, the "Control 
Company" shall mean Network General.

              the direct or indirect sale or exchange by the stockholders of 
the Control Company of all or substantially all of the stock of the Control 
Company where the stockholders of the Control Company before such sale or 
exchange do not retain, directly or indirectly, at least a majority of the 
beneficial interest in the voting stock of the Control Company;

              a merger in which the stockholders of the Control Company 
before such merger do not retain, directly or indirectly, at least a majority 
of the beneficial interest in the voting stock of the Control Company; or

              the sale, exchange, or transfer of all or substantially all of 
the Control Company's assets (other than a sale, exchange, or transfer to one 
(1) or more corporations where the stockholders of the Control Company before 
such sale, exchange, or transfer retain, directly or indirectly, at least a 
majority of the beneficial interest in the voting stock of the corporation(s) 
to which the assets were transferred).

    In the event of a Transfer of Control, the Board, in its sole discretion, 
shall either (i) 

                                       8
<PAGE>

provide that Purchase Rights granted under the Plan shall be fully 
exercisable to the extent of each Participant's account balance for the 
Offering Period as of a date prior to the Transfer of Control, as the Board 
so determines, or (ii) arrange with the surviving, continuing, successor, or 
purchasing corporation, as the case may be, that such corporation assume the 
Company's rights and obligations under the Plan.  All Purchase Rights shall 
terminate effective as of the date of the Transfer of Control to the extent 
that the Purchase Right is neither exercised as of the date of the Transfer 
of Control nor assumed by the surviving, continuing, successor, or purchasing 
corporation, as the case may be.

     O.  CAPITAL CHANGES.  In the event of changes in the common stock of the 
Company due to a stock split, reverse stock split, stock dividend, 
combination, reclassification, or like change in the Company's 
capitalization, or in the event of any merger, sale or other reorganization, 
appropriate adjustments shall be made by the Company in the Plan's share 
reserve, the number of Shares subject to a Purchase Right and in the purchase 
price per share.

     P.  NON-TRANSFERABILITY.  A Purchase Right may not be transferred in any 
manner otherwise than by will or the laws of descent and distribution and 
shall be exercisable during the lifetime of the Participant only by the 
Participant.

     Q.  REPORTS.  Each Participant who exercised all or part of the 
Participant's Purchase Right for an Offering Period shall receive as soon as 
practicable after the last day of such Offering Period a report of such 
Participant's account setting forth the total payroll deductions accumulated, 
the number of Shares purchased and the remaining cash balance to be refunded 
or retained in the Participant's account pursuant to paragraph 9(g), if any.

     R.  PLAN TERM.  This Plan shall continue until terminated by the Board 
or until all of the Shares reserved for issuance under the Plan have been 
issued, whichever shall first occur.

     S.  RESTRICTION ON ISSUANCE OF SHARES.  The issuance of shares pursuant 
to the Purchase Right shall be subject to compliance with all applicable 
requirements of federal or state law with respect to such securities.  The 
Purchase Right may not be exercised if the issuance of shares upon such 
exercise would constitute a violation of any applicable federal or state 
securities laws or other law or regulations.  In addition, no Purchase Right 
may be exercised unless (i) a registration statement under the Securities Act 
of 1933, as amended, shall at the time of exercise of the Purchase Right be 
in effect with respect to the shares issuable upon exercise of the Purchase 
Right, or (ii) in the opinion of legal counsel to the Company, the shares 
issuable upon exercise of the Purchase Right may be issued in accordance with 
the terms of an applicable exemption from the registration requirements of 
said Act.  As a condition to the exercise of the Purchase Right, the Company 
may require the Participant to satisfy any qualifications that may be 
necessary or appropriate, to evidence compliance with any applicable law or 
regulation, and to make any representation or warranty with respect thereto 
as may be requested by the Company.

     T.  LEGENDS.  The Company may at any time place legends or other 
identifying symbols referencing any applicable federal and/or state 
securities restrictions and any provision convenient in the administration of 
the Plan on some or all of the certificates representing shares of stock 
issued under the Plan.  The Participant shall, at the request of the Company, 
promptly 

                                       9
<PAGE>

present to the Company any and all certificates representing shares acquired 
pursuant to a Purchase Right in the possession of the Participant in order to 
carry out the provisions of this paragraph.  Unless otherwise specified by 
the Company, legends placed on such certificates may include but shall not be 
limited to the following:

              "THE SECURITIES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN 
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, 
TRANSFERRED, ASSIGNED OR HYPOTHECATED UNLESS THERE IS AN EFFECTIVE 
REGISTRATION STATEMENT UNDER SUCH ACT COVERING SUCH SECURITIES, THE SALE IS 
MADE IN ACCORDANCE WITH RULE 144 UNDER THE ACT, OR THE COMPANY RECEIVES AN 
OPINION OF COUNSEL FOR THE HOLDER OF THESE SECURITIES REASONABLY SATISFACTORY 
TO THE COMPANY, STATING THAT SUCH SALE, TRANSFER, ASSIGNMENT OR HYPOTHECATION 
IS EXEMPT FROM THE REGISTRATION AND PROSPECTUS DELIVERY REQUIREMENTS OF SUCH 
ACT."

              Any legend required to be placed thereon by the California 
Commissioner of Corporations.

     U.  NOTIFICATION OF SALE OF SHARES.  The Company may require the 
participant to give the Company prompt notice of any disposition of Shares 
acquired by exercise of a Purchase Right within two years from the date of 
granting such Purchase Right or one year from the date of exercise of such 
Purchase Right.  The Company may direct that the certificates evidencing 
shares acquired by exercise of a Purchase Right refer to such requirement to 
give prompt notice of disposition.

     V.  AMENDMENT OR TERMINATION OF THE PLAN.  The Board may at any time 
amend or terminate the Plan, except that such termination shall not affect 
Purchase Rights previously granted under the Plan, nor may any amendment make 
any change in a Purchase Right previously granted under the Plan which would 
adversely affect the right of any Participant (except as may be necessary to 
qualify the Plan as an employee stock purchase plan pursuant to section 423 
of the Code). In addition, an amendment to the Plan must be approved by the 
stockholders of the Company, within the meaning of section 423 of the Code, 
within twelve (12) months of the adoption of such amendment if such amendment 
would authorize the sale of more shares than are authorized for issuance 
under the Plan or would change the definition of the corporations that may be 
designated by the Board as a corporation the employees of which are eligible 
to participate in the Plan. Furthermore, the approval of the Company's 
stockholders shall be sought for any amendment to the Plan for which the 
Board deems stockholder approval necessary in order to comply with Rule 16b-3.

                                       10
<PAGE>

                        NETWORK GENERAL CORPORATION
                        EMPLOYEE STOCK PURCHASE PLAN
                           SUBSCRIPTION AGREEMENT

___      Original Application
___      Change in Percentage of Payroll Deductions

    I hereby elect to participate in the 1989 Employee Stock Purchase Plan 
(the "Stock Purchase Plan") of Network General Corporation (the "Company") 
and subscribe to purchase shares of the Company's common stock as determined 
in accordance with the terms of the Stock Purchase Plan.

    I hereby authorize payroll deductions in the amount of $_____ or ____ 
percent of my compensation (fill in one only) from each paycheck throughout 
the "Offering Period" (as defined in the Stock Purchase Plan) in accordance 
with the terms of the Stock Purchase Plan.  (I understand that the amount 
deducted each pay period cannot be more than 10% of my compensation.)  I 
understand that these payroll deductions will be accumulated for the purchase 
of shares of common stock of the Company at the applicable purchase price 
determined in accordance with the Stock Purchase Plan.  I further understand 
that, except as otherwise set forth in the Stock Purchase Plan, shares will 
be purchased for me automatically on the last day of the Offering Period 
unless I withdraw from the Stock Purchase Plan or from the Offering by giving 
written notice to the Company or unless I terminate employment.

    I further understand that I will automatically participate in each 
subsequent Offering under the Plan and have the same percentage of my 
compensation withheld as I have designated in this agreement until such time 
as I file with the Company a notice of withdrawal from the Stock Purchase 
Plan on such form as may be established from time to time by the Company or I 
terminate employment.

    Shares purchased for me under the Stock Purchase Plan should be issued in 
the name set forth below.  I understand that Shares may be issued either in 
my name alone or together with my spouse as community property or in joint 
tenancy.)

    NAME:     ___________________________
    ADDRESS:  ___________________________
              ___________________________
              ___________________________

    MY SOCIAL SECURITY NUMBER: ________________

                                       11
<PAGE>

    I am familiar with the terms and provisions of the Stock Purchase Plan 
and hereby agree to participate in the Stock Purchase Plan subject to all of 
the terms and provisions thereof.  I understand that the Board reserves the 
right to amend the Stock Purchase Plan and my right to purchase stock under 
the Stock Purchase Plan as may be necessary to qualify the Plan as an 
employee stock purchase plan as defined in section 423 of the Internal 
Revenue Code of 1986, as amended.  I understand that the effectiveness of 
this subscription agreement is dependent upon my eligibility to participate 
in the Stock Purchase Plan.

Date: _____________                Signature: ________________________

                                       12
<PAGE>

                        NETWORK GENERAL CORPORATION
                        EMPLOYEE STOCK PURCHASE PLAN
                            NOTICE OF WITHDRAWAL

     I hereby elect to withdraw from the current offering (the "Offering") of 
the common stock of Network General Corporation (the "Company") under the 
Network General Corporation 1989 Employee Stock Purchase Plan (the "Stock 
Purchase Plan"), and hereby request that all payroll deductions credited to 
my account under the Stock Purchase Plan with respect to the Offering (if 
any), and not previously used to purchase shares of common stock of the 
Company under the Stock Purchase Plan, be paid to me as soon as is practical. 
I understand that this Notice of Withdrawal automatically terminates my 
interest in the Offering.

     As to participation in future offerings of stock under the Stock 
Purchase Plan, I elect as follows:

     ___     I elect to participate in future offerings under the Stock 
Purchase Plan.

     I understand that by making the election set forth above I shall 
participate in all sequential offerings under the Stock Purchase Plan 
commencing subsequent to the Offering until such time as I elect to withdraw 
from the Stock Purchase Plan or any such subsequent offering.  (However, if I 
am subject to Section 16 of the Securities Exchange Act of 1934, I understand 
that I may be prohibited from again participating in future Offerings for at 
least six months from the date of my withdrawal.  See applicable provisions 
of the Plan.)

     ___      I elect NOT to participate in future offerings under the Stock 
Purchase Plan.

     I understand that by making the election set forth above I terminate my 
interest in the Stock Purchase Plan and that no further payroll deductions 
will be made unless I elect in accordance with the Stock Purchase Plan to 
become a participant in another offering under the Stock Purchase Plan.

     I understand that if no election is made as to participation in future 
offerings under the Stock Purchase Plan, I will be deemed to have elected to 
participate in such future offerings.

Date: _____________                Signature: ________________________


                                   1
<PAGE>

                        NETWORK GENERAL CORPORATION
                     1989 EMPLOYEE STOCK PURCHASE PLAN
                      IRREVOCABLE ELECTION BY OFFICER



     I, _______________________________, am a participant in the Network 
General Corporation 1989 Employee Stock Purchase Plan (the "Plan").  In order 
to exempt my future purchase(s) of common stock under the Plan from the 
"short-swing" profit recovery provisions of Section 16(b) of the Securities 
Exchange Act of 1934, as amended (the "Exchange Act"), I declare as follows:

     1.   TERM.

          (a)  The Term of this Election (the "Term") will commence either 
immediately or on the first day of the offering period under the Plan 
beginning on or after the date of this Election and ending at least six (6) 
months after the date of this Election, as indicated below.  The Term will 
end six (6) months after the date on which I deliver to the Company a written 
revocation of this Election on a form approved by the Company.

     Check one:

     ___  The Term will commence on the first day of the offering period 
beginning:

          __________________________
                (Enter Date)

     ___  The Term will commence immediately.


     (b)  I understand that any purchase I make under the Plan less than six 
(6) months after the date of this Election or at any other time that this 
Election is not in force may not be exempt from Section 16(b) of the Exchange 
Act.  I understand that any such purchase will be exempt from Section 16(b) 
only if I hold the shares I acquire in such purchase for at least six months 
after the date of purchase.

     2.   ELECTION.  I IRREVOCABLY ELECT, for the duration of the Term, to 
have all payroll deductions accumulated in my account under the Plan as of 
each purchase date applied to purchase whole shares of common stock in 
accordance with the terms of the Plan and my current subscription agreement.  
Furthermore, I waive any and all rights I may have under the Plan or my 
subscription agreement to increase or decrease the rate of payroll deductions 
set forth in my current subscription agreement, to voluntarily cease such 
payroll deductions, or to withdraw from the Plan or any offering period under 
the Plan.

     3.   INDEMNIFICATION.  The Company will not be required to carry out any 
instruction I may give to the Company, purporting to be effective at any time 
during the Term, which is 

                                       1
<PAGE>

contrary to this Election.  Notwithstanding the foregoing, the Company shall 
have no liability to me, and I hereby agree to indemnify and hold the Company 
harmless with respect to, any consequence arising from the Company's 
compliance with any instruction that I may give, including, without 
limitation, any cost, liability or penalty I may incur pursuant to any 
federal or state income tax or securities law or regulation.

Date: 



_______________________________________
            (Signature)

                                       2
<PAGE>

                        NETWORK GENERAL CORPORATION
                     1989 EMPLOYEE STOCK PURCHASE PLAN
                               REVOCATION OF
                            ELECTION BY OFFICER


     I, ___________________________ hereby revoke my Election, dated 
________________ 199__, with respect to my participation in the Network 
General Corporation 1989 Employee Stock Purchase Plan.  I understand that 
this Revocation will become effective six (6) months after the date on which 
this Revocation is delivered to the authorized representative of the Company.

Date: _________________________



________________________________
         (Signature)



RECEIVED BY:

                                             NETWORK GENERAL CORPORATION
                                             AUTHORIZED REPRESENTATIVE



Date: _________________________              _________________________________
                                             (Signature)

                                             _________________________________
                                             (Name Printed)

                                       3

<PAGE>

                                 CINCO NETWORKS, INC.               EXHIBIT 99.3
                                1997 STOCK OPTION PLAN
                                           
     1. PURPOSES OF THE PLAN. The purposes of this Stock Option Plan are to 
attract and retain the best available personnel for positions of substantial 
responsibility, to provide additional incentive to employees and Consultants 
of the Company and its Subsidiaries and to promote the success of the 
Company's business. Options granted under the Plan may be incentive stock 
options (as defined under Section 422 of the Code) or nonstatutory stock 
options, as determined by the Administrator at the time of grant of an option 
and subject to the applicable provisions of Section 422 of the Code, as 
amended, and the regulations promulgated thereunder.

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

     (a) "Administrator" means the Board or any of its Committees appointed 
pursuant to Section 4 of the Plan.

     (b) "Board" means the Board of Directors of the Company.

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

     (d) "Committee" means a Committee appointed by the Board of Directors in 
accordance with Section 4 of the Plan.

     (e) "Common Stock" means the Common Stock of the Company

     (f) "Company" means the CINCO NETWORKS, INC., a California Corporation.

     (g) "Consultant" means any person, including an advisor, who is engaged 
by the Company or any Parent or Subsidiary to render services and is 
compensated for such services, and any director of the company whether 
compensated for such services or not provided that if and in the event the 
Company registers any class of any equity security pursuant to the Exchange 
Act, the term Consultant shall not include directors who are not compensated 
for their services or are paid only a director's fee by the Company.

     (h) "Continuous Status as an Employee or Consultant" means that the 
employment or consulting relationship is not interrupted or terminated by the 
Company, any Parent or Subsidiary. Continuous Status as an Employee or 
Consultant shall not be considered interrupted in the case of: (i) any leave 
of absence approved by the Company, including sick leave, military leave, or 
any other personal leave; provided, however, that for purposes of Incentive 
Stock Options, any such leave may not exceed ninety (90) days, unless 
reemployment upon the expiration of such leave is guaranteed by contract 
(including certain Company policies) or statute; or (ii) transfers between 
locations of the Company or between the Company, its parent, its Subsidiaries 
or its successor.

                                       -1-

<PAGE>

     (i) "Employee" means any person, including officers and directors, 
employed by the Company or any Parent or Subsidiary of the Company. The 
payment of a director's fee by the Company shall not be sufficient to 
constitute "employment" by the Company.

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

     (k) "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 National Market 
System of the National Association of Securities Dealers, Inc., Automated 
Quotation ("NASDAQ") System, 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 quoted on the NASDAQ System (but not on 
the National Market System thereof) or regularly quoted by a recognized 
securities dealer but selling prices are not reported, its Fair Market Value 
shall be the mean between the high bid and low asked prices for the Common 
Stock or;

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

     (l) "Incentive Stock Option" means an Option intended to qualify as an 
incentive stock option within the meaning of Section 422 of the Code.

     (m) "Nonstatutory Stock Option" means an Option not intended to qualify 
as an Incentive Stock Option.

     (n) "Option" means a stock option granted pursuant to the Plan.

     (o) "Optioned Stock" means the Common Stock subject to an Option.

     (p) "Optionee" means an Employee or Consultant who receives an Option.

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

     (r) "Plan" means this 1997 Stock Option Plan.

     (s) "Share" means a share of the Common Stock, as adjusted in accordance 
with Section 11 below.

                                       -2-
<PAGE>

     (t) "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 11 of 
the Plan, the maximum aggregate number of shares which may be optioned and 
sold under the Plan is 1,500,000 shares of common Stock. The shares may be 
authorized, but unissued, or reacquired Common Stock.

     If an Option should expire or become unexercisable for any reason 
without having been exercised in full, the unpurchased Shares which were 
subject thereto shall, unless the Plan shall have been terminated, become 
available for future grant under the Plan.

     4. ADMINISTRATION OF THE PLAN.

     (a) Initial Plan Procedure. Prior to the date, if any, upon which the 
Company becomes subject to the Exchange Act, the Plan shall be administered 
by the Board or a committee appointed by the Board.

     (b) Plan Procedure After the Date, if any, Upon Which the Company 
Becomes Subject to the Exchange Act.

          (i) Administration With Respect to Directors and Officers. With 
respect to grants of Options to Employees who are also officers or directors 
of the Company, the Plan shall be administered by (A) the Board if the Board 
may administer the Plan in compliance with Rule 16b-3 promulgated under the 
Exchange Act or any successor thereto ("Rule 16b-3") with respect to a plan 
intended to qualify thereunder as a discretionary plan, or (B) a committee 
designated by the Board to administer the Plan, which committee shall be 
constituted in such a manner as to permit the Plan to comply with Rule 16b-3 
with respect to a plan intended to qualify thereunder as a discretionary 
plan. Once appointed, such Committee shall continue to serve in its 
designated capacity until otherwise directed by the Board. From time to time 
the Board may increase the size of the Committee and appoint additional 
members thereof, remove members (with or without cause) and appoint new 
members in substitution therefor, fill vacancies, however caused, and remove 
all members of the Committee and thereafter directly administer the Plan, all 
to the extent permitted by Rule 16b-3 with respect to a plan intended to 
qualify thereunder as a discretionary plan.

         (ii) Multiple Administrative Bodies. If permitted by Rule 16b-3, the 
Plan may be administered by different bodies with respect to directors, 
non-director officers and Employees who are neither directors nor officers.

        (iii) Administration With Respect to Consultants and Other Employees. 
With respect to grants of Options to Employees or Consultants who are neither 
directors nor officers of the Company. the Plan shall be administered by (A) 
the Board or (B) a committee designated by the Board, which committee shall 
be constituted in such a manner as to satisfy the legal requirements relating 
to the administration of incentive stock option plans, if any, of California 

                                       -3-
<PAGE>

corporate and securities laws, of the Code, and of any applicable stock 
exchange (the "Applicable Laws"). Once appointed, such Committee shall 
continue to serve in its designated capacity until otherwise directed by the 
Board. From time to time the Board may increase the size of the Committee and 
appoint additional members thereof, remove members (with or without cause) 
and appoint new members in substitution therefor, fill vacancies, however 
caused, and remove all members of the Committee and thereafter directly 
administer the Plan, all to the extent permitted by the Applicable Laws.

     (c) Powers of the Administrator. Subject to the provisions of the Plan 
and in the case of a Committee, the specific duties delegated to the Board to 
such Committee, and subject tot he approval of any relevant authorities, 
including the approval, if required, of any stock exchange upon which the 
Common Stock is listed, the Administrator shall have the authority, in its 
discretion:

          (i) to determine the Fair Market Value of the Common Stock, in 
accordance with Section 2(k) of the Plan;

hereunder;

         (ii) to select the Consultants and Employees to whom Option may from 
time to time be granted hereunder;

        (iii) to determine whether and to what extent Option are granted

         (iv) to determine the number of shares of Common Stock to be covered 
by each such award granted hereunder;

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

         (vi) to determine the terms and conditions, not inconsistent with 
the terms of the Plan, of any award granted hereunder;

        (vii) to determine whether and under what circumstances an Option may
be settled in cash under subsection 9(f) instead of Common Stock;

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

         (ix) to construe and interpret the terms of the Plan and awards 
granted pursuant to the Plan.

    (d) Effect of Administrator's Decision. All decisions, determinations and 
interpretations of the Administrator shall be final and binding on all 
Optionees and any other holders of any Options.

                                       -4-
<PAGE>

     5. ELIGIBILITY.

     (a) Nonstatutory Stock Option may be granted to Employees and 
Consultants. Incentive Stock Options may be granted only to Employees. An 
Employee or Consultant who has been granted Option may, if otherwise 
eligible, be granted additional Options.

     (b) Each Option shall be designated in the written 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 Options designated as 
Incentive Stock Options are exercisable for the first time by any Optionee 
during any calendar year (under all plans of the Company or any Parent or 
Subsidiary) exceeds $100,000, such excess Options shall be treated as 
Nonstatutory Stock Options.

     (c) For purposes of Section 5(b), Incentive Stock Options shall be taken 
into account in the order in which they were granted, and the Fair Market 
Value of the Shares shall be determined as of the time the Option with 
respect to such Shares is granted.

     (d) The Plan shall not confer upon any Optionee any right with respect 
to continuation of employment or consulting relationship with the Company, 
nor shall it interfere in any way with his or her right or the Company's 
right to terminate his or her employment or consulting relationship at any 
time, with or without cause.

     6. TERM OF PLAN. The Plan shall become effective upon the earlier to 
occur of its adoption by the Board of Directors or its approval by the 
shareholders of the Company as described in Section 17 of the Plan. It shall 
continue in effect for a term of ten (10) year unless sooner terminated under 
Section 13 of the Plan.

     7. TERM OF OPTION. The Term of each Option shall be the term stated in 
the Option Agreement; provided, however, that the term shall be no more than 
ten (10) years from the date of grant thereof. However, in the case of an 
Incentive Stock Option granted to an Optionee who, at the time the Option is 
granted, owns stock representing more than ten percent (10%) of the voting 
power of all classes of stock of the Company or any Parent or Subsidiary, the 
term of the Option shall be five (5) years from the date of grant thereof or 
such shorter term as may be provided in the Option Agreement.

     8. OPTION EXERCISE PRICE AND CONSIDERATION.

     (a) The per share exercise price for the Shares to be issued pursuant to 
exercise of an Option shall be such price as is determined by the Board, but 
shall be subject to the following:

          (i) IN THE CASE OF AN INCENTIVE STOCK OPTION

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

                                       -5-
<PAGE>

stock of the Company or any Parent or Subsidiary, the per Share exercise 
price shall be no less than 100% of the Fair Market Value per Share on the 
date of grant.

               (B) granted to any Employee, 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 OPTION

               (A) granted to a person who, at the time of the grant of such 
Option, owns stock representing more then ten percent (10%) of the voting 
power of all classes of stock of the Company or any Parent or Subsidiary, the 
per Share exercise price shall be no less than 100% of the Fair Market Value 
per Share on the date of the grant.

               (B) granted to any person, the per Share exercise price shall 
be no less then 85% of the Fair Market Value per Share on the date of the 
grant.

     (b) The consideration to be paid for the shares to be issued upon 
exercise of an Option, including the method of payment, shall be determined 
by the Administrator (and, in the case of an Incentive Stock Option, shall be 
determined at the time of grant) and may consist entirely of (1) cash, (2) 
check, (3) promissory note, (4) other Shares which (x) in the case of Shares 
acquired upon exercise of an Option either have been owned by the Optionee 
for more than six months on the date of surrender or were not acquired, 
directly or indirectly, from the Company, and (y) 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, (5) delivery of a properly executed 
exercise notice together with such other documentation as the Administrator 
and the broker, if applicable, shall require to effect an exercise of the 
Option and delivery to the Company of the sale or loan proceeds required to 
pay the exercise price, or (6) any combination of the foregoing methods of 
payment. IN making its determination as to the type of consideration to 
accept, the Board shall consider if acceptance of such consideration may be 
reasonably expected to benefit the Company.

    9. EXERCISE OF OPTION.

     (a) Procedure for Exercise; Rights as a Shareholder. Any Option granted 
hereunder shall be exercisable at such times and under such conditions as 
determined by the Board, including performance criteria with resect to the 
Company and/or the Optionee, and as shall be permissible under the terms of 
the Plan. An Option may not be exercised for a fraction of a Share. An Option 
shall be deemed to be exercised when written notice of such exercise has been 
given to the Company ~n accordance with the terms of the Option by the person 
entitled to exercise the Option and full payment for the shares with respect 
to which the Option is exercised has been received by the Company. Full 
payment may, as authorized by the Board, consist of any consideration and 
method of payment allowable under Section 8(b) of the Plan. 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 stock 
certificate evidencing such Shares, no right to vote or receive dividends or 
any other rights as a shareholder shall exist with respect to 

                                       -6-
<PAGE>

the Optioned Stock, notwithstanding the exercise of the Option The Company 
shall issue (or cause to be issued) such stock certificate promptly upon 
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 the stock certificate is 
issued, except as provided in Section 11 of the Plan. Exercise of an Option 
in any manner shall result in a decrease in the number of Shares which 
thereafter may be 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 Employment. In the event of termination of an 
Optionee's Continuous Status as an Employee or Consultant with the Company, 
such Optionee may, but only within such period of time as is determined by 
the Administrator, of at least thirty (30) days, with such determination in 
the case of an Incentive Stock Option not exceeding three (3) months after 
the date of such termination (but in no event later than the expiration date 
of the term of such Option as set forth in the Option Agreement), exercise 
his or her Option to the extent that Optionee was entitled to exercise it at 
the date of such termination. To the extent that Optionee was not entitled to 
exercise the Option at the date of such termination, or if Optionee does not 
exercise such Option to the extent so entitled within the time specified 
herein, the Option shall terminate.

     (c) Disability of Optionee. Notwithstanding the provisions of Section 
9(b) above, in the event of termination of an Optionee's Continuous Status as 
an Employee or Consultant as a result of his disability (as defined in 
section 22(e)(3) of the code), Optionee may, but only within twelve (12) 
months from the date of such termination (but in no event later than the 
expiration date of the term of such Option as set forth in the Option 
Agreement), exercise the Option to the extent otherwise entitled to exercise 
it at the date of such termination. To the extent that Optionee was not 
entitled to exercise the Option at the date of termination, or if Optionee 
does not exercise such Option to the extent so entitled within the time 
specified herein, the Option shall terminate.

     (d) Death of Optionee. In the event of termination of an Optionee's 
Continuous Status as an Employee or Consultant as a result of the death of an 
Optionee, the Option may be exercised, at any time within twelve (12) months 
following the date of death (but in not event later than the expiration date 
of the term of such Option as set forth in the Option Agreement), by the 
Optionee's estate or by a person who acquired the right to exercise the 
Option by bequest or inheritance, but only to the extent the Optionee was 
entitled to exercise the Option at the date of death. To the extent that 
Optionee was not entitled to exercise the Option at the date of death, or if 
Optionee does no exercise such Option to the extent so entitled within the 
time specified herein, the Option shall terminate.

     (e) Rule 16b-3. Options granted to persons subject to section 16(b) of 
the Exchange Act must comply with Rule 16b-3 and shall contain such 
additional conditions or restrictions as may be required thereunder to 
qualify for the maximum exemption from Section 16 of the Exchange Act with 
respect to Plan transactions.

     (f) 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 

                                       -7-
<PAGE>

Administrator shall establish and communicate to the Optionee at the time 
that such offer is made.

     10. NON-TRANSFERABILITV OF OPTIONS. Options 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.

     11. ADJUSTMENTS UPON CHANGES IN CAPITALIZATION OR MERGER.

     (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 the number of shares of Common Stock which have 
been authorized for issuance under the Plan but as to which no Options have 
yet been granted or which have been returned to the Plan upon cancellation or 
expiration of an Option, as well as the price per share of Common Stock 
covered by each such outstanding Option, shall be proportionately adjusted 
for any increase or decrease in the number of issued shared 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.

     (b) Dissolution or Liquidation. In the event of the proposed dissolution 
or liquidation of the Company, the board shall notify the Optionee at least 
fifteen (15) days prior to such proposed action. To the extent it has not 
been previously exercised, the Option will terminate immediately prior to the 
consummation of such proposed action.

     (c) Merger. In the event of a merger of the Company with or into another 
corporation, the Option shall be assumed or an equivalent option shall be 
substituted by such successor corporation or a parent or subsidiary of such 
successor corporation. If, in such event, the Option is not assumed or 
substituted, the Option shall terminate as of the date of the closing of the 
merger. For the purposes of this paragraph, the Option shall be considered 
assumed if, following the merger, the option confers the right to purchase, 
for each Share of Optioned Stock subject to the Option immediately prior to 
the merger, the consideration (whether stock, cash, or other securities or 
property) received in the merger 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 was not solely common stock of the 
successor corporation or its Parent, the Administrator may, with the consent 
of the successor corporation and the participant, provide for the 
consideration to be received upon the exercise of 

                                       -8-
<PAGE>

the Option, for each Share of Optioned Stock subject to the Option, 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.

     12. TIME OF GRANTING OPTIONS. The date of grant of an Option shall, for 
all purposes, be the date on which the Administrator makes the determination 
granting such Option, or such other date as is determined by the Board. 
Notice of the determination shall be given to each Employee or Consultant to 
whom an Option is so granted within a reasonable time after the date of such 
grant.

    13. AMENDMENT AND TERMINATION OF THE PLAN..

     (a) Amendment and Termination. The Board may at any time amend, alter, 
suspend or discontinue the Plan, but no amendment, alteration, suspension or 
discontinuation shall be made which would impair the rights of any Optionee 
under any grant theretofore made, without his or her consent. In addition, to 
the extent necessary and desirable to comply with Rule 16b-3 under the 
Exchange Act or with Section 422 of the Code (or any other applicable law or 
regulation, including the requirements of the NASD or an established stock 
exchange), the Company shall obtain shareholder approval of any Plan 
amendment in such a manner and to such a degree as required.

     (b) Effect of Amendment or Termination. Any such amendment or 
termination of the Plan shall not affect Options already granted and such 
Options shall remain in full force and effect as if this Plan had not been 
amended or terminated, unless mutually agreed otherwise between the Optionee 
and the Board, which agreement must be in writing and signed by the Optionee 
and the Company

     14. CONDITIONS UPON ISSUANCE OF SHARES. Shares shall not be unissued 
pursuant to the exercise of an Option unless the exercise of such Option and 
the issuance and delivery of such Shares pursuant thereto shall comply with 
all relevant provisions of law, including, without limitation, the Securities 
Act of 1933, as amended, the Exchange Act, the rules and regulations 
promulgated thereunder, and the requirements of any stock exchange upon which 
the Shares may then be listed, and shall be further subject to the approval 
of counsel for the Company with respect to such compliance. As a condition to 
the exercise of an Option, the Company may require the person exercising such 
Option to represent and warrant at the time of any such exercise that the 
Shares are being purchased only for 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 by any of the aforementioned 
relevant provisions of law.

     15. 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. 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 

                                       -9-
<PAGE>

in respect of the failure to issue or sell such Shares as to which such 
requisite authority shall not have been obtained.

     16. AGREEMENTS. Options shall be evidenced by written agreements in such 
form as the Board shall approve from time to time.

     17. SHAREHOLDER APPROVAL. Continuance of the Plan shall be subject to 
approval by the shareholders of the Company within twelve (12) months before 
or after the date the Plan is adopted. Such shareholder approval shall be 
obtained in the degree and manner required under applicable state and federal 
law and the rules of any stock exchange upon which the Common Stock is listed.

     18. INFORMATION TO OPTIONEES AND PURCHASERS. The Company shall provide 
to each Optionee and to each individual who acquired Shares pursuant to the 
Plan, during the period such Optionee or purchaser has one or more Options 
outstanding, and, in the case of an individual who acquired Shares pursuant 
to the Plan, during the period such individual owns such Shares, copies of 
annual financial statements. The Company shall not be required to provide 
such statements to key employees whose duties in connection with the Company 
assure their access to equivalent information.


                                       -10-
<PAGE>

                                 CINCO NETWORKS, INC.
                                1997 STOCK OPTION 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:

Term/Expiration Date:



____  Incentive Stock Option

____  Nonstatutory Stock Option

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 12 
months after the Vesting Commencement Date, and 2.08% of the Shares subject 
to the Option shall vest each one month(s) thereafter. If this Vesting 
Schedule results in a fractional shares, amounts shall be rounded down to 
eliminate said fractional shares. On the final vesting date, all remaining 
Shares may be exercised.

TERMINATION PERIOD:

                                       11
<PAGE>

     This Option may be exercised for 30 days after termination of employment 
or consulting relationship, or such longer period as may be applicable upon 
death or disability of Optionee as provided in the Plan, but in no event 
later than the Term/Expiration Date as provided above.

II. AGREEMENT

     1. Grant of Option. Cinco Networks, Inc., a California corporation (the 
"Company"), hereby grants to the Optionee named in the Notice of Grant (he 
"Optionee"), an option (the "Option") to purchase a total number of shares of 
Common Stock (the "Shares") 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, definitions and provisions of the 1997 Stock Option 
Plan (the "Plan") adopted by the Company, which is incorporated herein by 
reference. Unless otherwise defined herein, the terms defined in the Plan 
shall have the same defined meanings in this Option.

     If designated in the Notice of Grant as an Incentive Stock Option, this 
Option is intended to qualify as an Incentive Stock Option as defined in 
Section 422 of the Code.

     2. EXERCISE OF OPTION. This Option shall be exercisable during its term 
in accordance with the Exercise Schedule set out in the Notice of Grant and 
with the provisions of Section 9 of the Plan as follows:

          (i) RIGHT TO EXERCISE.

              (a) This Option may not be exercised for a fraction of a share.

              (b) In the event of Optionee's death, disability or other 
termination of employment, the exercisability of the Option is governed by 
Sections 6,7 and 8 below, subject to the limitation contained in subsection 
2(i)(c).

              (c) In no event may this Option be exercised after the date of 
expiration of the term of this Option as set forth in the Notice of Grant.

         (ii) METHOD OF EXERCISE. This Option shall be exercisable by written 
notice (in the form attached as Exhibit A) which shall state the election to 
exercise the Option, the number of Shares in respect of which the option is 
being exercised, and such other representations and agreements as to the 
holder's investment intent with respect to such shares of Common Stock as may 
be required by the Company pursuant to the provisions of the Plan. Such 
written notice shall be signed by the Optionee and shall be delivered in 
person or by certified mail to the Secretary of the company. The written 
notice shall be accompanied by payment of the Exercise Price. This Option 
shall be deemed to be exercised upon receipt by the company of such written 
notice accompanied by the Exercise Price.

          No Shares will be issued pursuant to the exercise of an Option 
unless such issuance and such exercise shall comply with all relevant 
provisions of law and requirements of 

                                       -12-
<PAGE>

any stock exchange upon which the Shares may then be listed. Assuming such 
compliance, for income tax purposes the shares shall be considered 
transferred to the Optionee on the date on which the Option is exercised with 
respect to such Shares.

     3. OPTIONEE'S REPRESENTATIONS. In the event the Shares purchasable 
pursuant to the exercise of this Option have not been registered under the 
Securities Act of 1933, as amended, at the time this Option is exercised, 
Optionee shall, if required by the Company, concurrently with the exercise of 
all or any portion of this Option, deliver to the Company his Investment 
Representation Statement in the form attached hereto as Exhibit B, and shall 
read the applicable rules of the Commissioner of Corporations attached to 
such Investment Representation Statement.

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

          (i) cash; or

         (ii) check; or

        (iii) surrender of other shares of Common Stock of the Company which 
(A) in the case of shares acquired pursuant to the exercise of a Company 
option, have been owned by the Optionee for more than six (6) months on the 
date of surrender, and (B) have a fair market value on the date of surrender 
equal to the Exercise Price of the Shares as to which the Option is being 
exercised; or

         (iv) delivery of a properly executed exercise notice together with 
such other documentation as the Administrator and the broker, if applicable, 
shall require to effect an exercise of the Option and delivery to the Company 
of the sale or loan proceeds required to pay the exercise price.

     5. RESTRICTIONS ON EXERCISE. This Option may not be exercised until such 
time as the Plan has been approved by the shareholders of the Company, or if 
the issuance of such Shares upon such exercise or the method of payment of 
consideration for such shares would constitute a violation of any applicable 
federal or state securities or other law or regulation, including any rule 
under Part 207 of Title 12 of the Code of Federal Regulations ("Regulation 
G") as promulgated by the Federal Reserve Board. As a condition to the 
exercise of this Option, the Company may require Optionee to make any 
representation and warranty to the company as may be required by any 
applicable law or regulation.

     6. TERMINATION OF RELATIONSHIP. In the event of termination of 
Optionee's Continuous Status as an Employee or consultant, Optionee may, to 
the extent otherwise so entitled at the date of such termination (the 
"Termination Date"), exercise this Option during the termination Period set 
out in the Notice of Grant. To the extent that Optionee was not entitled to 
exercise this Option at the date of such termination, or if Optionee does not 
exercise this Option within the time specified herein, the Option shall 
terminate.

                                       -13-
<PAGE>

     7. DISABILITY OF OPTIONEE. Notwithstanding the provisions of section 6 
above, in the event of termination of Optionee's Continuous Status as an 
Employee or consultant as a result of disability (as defined Section 22(e)(3) 
of the Code), Optionee may, but only within twelve (12) months from the date 
of termination of employment (but in no event later than the date of 
expiration of the term of this Option as set forth in section 10 below), 
exercise the Option to the extent otherwise so entitled at the date of such 
termination. To the extent that Optionee was not entitled to exercise the 
Option at the date of termination, or if Optionee does not exercise such 
Option (to the extent otherwise so entitled) within the time specified 
herein, the Option shall terminate.

     8. DEATH OF OPTIONEE. In the event of termination of Optionee's 
continuous Status as an Employee or consultant as a result of the death of 
Optionee, the Option may be exercised at any time within twelve (12) months 
following the date of death (but in no event later than the date of 
expiration of the term of this Option as set forth in Section 10 below), buy 
Optionee's estate or by a person who acquired the right to exercise the 
Option by bequest or inheritance, but only to the extent the Optionee could 
exercise the Option at the date of death.

     9. 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 him. The terms 
of this Option shall be binding upon the executors, administrators, heirs, 
successors and assigns of the Optionee.

     10. 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. The limitations set 
out in Section 7 of the Plan regarding Options designated as Incentive Stock 
Options and Options granted to more than ten percent (10%) shareholders shall 
apply to this Option.

     11. TAXATION UPON EXERCISE OF OPTION. Optionee understands that, upon 
exercising a nonstatutory Option, he or she will recognize income for tax 
purposes in an amount equal to the excess of the then fair market value of 
the hares over the exercise price. However, the timing of this income 
recognition may be deferred for up to six months if Optionee is subject to 
Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange 
Act"). If the Optionee is an employee, the Company will be required to 
withhold from Optionee's compensation, or collect from Optionee and pay to 
the applicable taxing authorities an amount equal to a percentage of this 
compensation income. Additionally, the Optionee may at some point be required 
to satisfy tax withholding obligations with respect to the disqualifying 
disposition of the Incentive Stock Option. The Optionee shall satisfy his or 
her tax withholding obligation arising upon the exercise of this Option out 
of Optionee's compensation or by payment to the Company.

     12. TAX CONSEQUENCES. Set forth below is a brief summary as of the date 
of this Option of some of the federal and California tax consequences of 
exercise of this Option and disposition of the Shares. THIS SUMMARY IS 
NECESSARILY INCOMPLETE, AND THE TAX LAWS 

                                       -14-
<PAGE>

AND REGULATIONS ARE SUBJECT TO CHANGE. OPTIONEE SHOULD CONSULT A TAX ADVISER 
BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE SHARES.

          (i) EXERCISE OF ISO. If this Option qualifies as an ISO, there will 
be no regular federal income tax liability or California income tax liability 
upon the exercise of the Option, although the excess, if any, of the fair 
market value of the Shares on the date of exercise over the Exercise Price 
will be treated as an adjustment to the alternative minimum tax for federal 
tax purposes and may subject the Optionee to the alternative minimum tax in 
the year of exercise.

         (ii) EXERCISE OF NONSTATUTORY STOCK OPTION. If this Option does not 
qualify as an ISO, there may be a regular federal income tax liability and 
California income tax liability upon the exercise of the Option. 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 Shares on the date of exercise over the Exercise Price. If Optionee is an 
employee, the Company will be required to withhold from Optionee's 
compensation or collect from Optionee and pay to the applicable taxing 
authorities an amount equal to a percentage of this compensation income at 
the time of exercise.

        (iii) DISPOSITION OF SHARES. In the case of an NSO, if Shares are 
held for at least one year, any gain realized on disposition of the Shares 
will be treated as long-term capital gain for federal and California income 
tax purposes. In the case of an ISO, if Shares transferred pursuant to the 
Option are held for at least one year after exercise and are disposed of at 
least two years after the Date of Grant, any gain realized on disposition of 
the shares will also be treated as long-term capital gain for federal and 
California income tax purposes. If Shares purchased under an ISO are disposed 
of within such one-year period or within two years after the Date of Grant, 
any gain realized on such disposition will be treated as compensation income 
(taxable at ordinary income rates) to the extent of the difference between 
the Exercise Price and the lesser of (1) the fair market value of the Shares 
on the date of exercise, or (2) the sale price of the Shares.

         (iv) NOTICE OF DISQUALIFYING DISPOSITION OF ISO SHARES. If the 
Option granted to Optionee herein is an ISO, and if Optionee sells or 
otherwise disposes of any of the Shares acquired pursuant to the ISO on or 
before the later of (1) the date two years after the Date of Grant, or (2) 
the date one year after the date of exercise, the Optionee shall immediately 
notify the Company in writing of such disposition. Optionee agrees that 
Optionee may be subject to income tax withholding by the Company on the 
compensation income recognized by the Optionee.

CINCO NETWORKS, INC. a California corporation

By: ________________________________

OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE 
OPTION HEREOF IS EARNED ONLY BY CONTINUING CONSULTANCY OR EMPLOYMENT AT THE 
WILL OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS 
OPTION OR

                                       -15-
<PAGE>

ACQUIRING SHARES HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT 
NOTHING IN THIS AGREEMENT, NOR IN THE COMPANY'S STOCK OPTION PLAN WHICH IS 
INCORPORATED HEREIN BY REFERENCE, SHALL CONFER UPON OPTIONEE ANY RIGHT WITH 
RESPECT TO CONTINUATION OF EMPLOYMENT OR CONSULTANCY BY THE COMPANY, NOR 
SHALL IT INTERFERE IN ANY WY WITH HIS RIGHT OR THE COMPANY'S RIGHT TO 
TERMINATE HIS EMPLOYMENT OR CONSULTANCY AT ANY TIME, WITH OR WITHOUT CAUSE.

     Optionee acknowledges receipt of a copy of the Plan and represents that 
he is familiar with the terms and provisions thereof, and hereby accepts this 
Option subject to all of the terms and provisions thereof. Optionee has 
reviewed the Plan and this Option in their entirety, has had an opportunity 
to obtain the advice of counsel prior to executing this Option and fully 
understands all provisions of the Option. Optionee hereby agrees to accept as 
binding, conclusive and final all decisions or interpretations of the 
administrator upon any questions arising under the Plan or this Option.

Dated:


______________________________
Optionee



                                       -16-
<PAGE>

                                 CINCO NETWORKS, INC.
                                1997 STOCK OPTION PLAN
                                           
                                   EXERCISE NOTICE
                                           
CINCO NETWORKS, INC.
6601 Koll Center Parkway, Suite 140
Pleasanton, CA 94566

Attention: Chief Financial Officer

    1. EXERCISE OF OPTION. Effective as of today,         , 19   . the 
undersigned ("Optionee") hereby elects to exercise Optionee's option to 
purchase ________ shares of the Common Stock (the "Shares") of Cinco 
Networks, Inc., (the "Company") under and pursuant to the 1997 Stock Option 
Plan (the "Plan") and the [ ] Incentive [ ] Nonstatutory Stock Option 
Agreement dated (the "OPTION AGREEMENT").

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

     3. RIGHTS AS SHAREHOLDER. Until the stock certificate evidencing such 
Shares is 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 stock 
certificate 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 stock certificate is issued, except as provided in Section 12 of the 
Plan.

     Optionee shall enjoy rights as a shareholder until such time as Optionee 
disposes of the Shares or the Company and/or its assignee(s) exercises the 
right of First Refusal hereunder. Upon such exercise, Optionee shall have no 
further rights as a holder of the Shares so purchased except the right to 
receive payment for the Shares so purchased in accordance with the provisions 
of this Agreement, and Optionee shall forthwith cause the certificate(s) 
evidencing the Shares so purchased to be surrendered to the company for 
transfer or cancellation.

     4. COMPANY'S RIGHT OF FIRST REFUSAL. Before any Shares held by Optionee 
or any transferee (either being sometimes referred to herein as the "Holder") 
may be sold or otherwise transferred (including transfer by gift or operation 
of law), the Company or its assignee(s) shall have a right of first refusal 
to purchase the Shares on the terms and conditions set forth in this section 
(the "Right of First Refusal").

         (a) NOTICE OF PROPOSED TRANSFER. The Holder of the shares shall 
deliver to the company a written notice (the "Notice") stating: (i) the 
Holder's bona fide intention to sell or otherwise transfer such Shares; (ii) 
the name of each proposed purchaser or other transferee 

                                       -17-
<PAGE>

("Proposed Transferee"); (iii) the number of Shares to be transferred to each 
Proposed Transferee: and (iv) the bona fide cash price or other consideration 
for which the Holder proposes to transfer the Shares (the "Offered Price"), 
and the Holder shall offer the Shares at the Offered Price to the Company or 
its assignee(s).

          (b) EXERCISE OF RIGHT OF FIRST REFUSAL. At any time within thirty 
(30) days after receipt of the Notice, the Company and/or its assignee(s) 
may, be giving written notice to the Holder, elect to purchase all but not 
less than all, of the Shares proposed to be transferred to any one or more of 
the Proposed Transferees, at the purchase price determined in accordance with 
subsection (c) below.

          (c) PURCHASE PRICE. The purchase price ("Purchase Price") for the 
Shares purchased by the Company or its assignees(s) under this Section shall 
be the Offered Price. If the Offered Price includes consideration other than 
cash, the cash equivalent value of the non-cash consideration shall be 
determined by the Board of Directors of the Company in good faith.

          (d) PAYMENT. Payment of the Purchase Price shall be made, at the 
option of the Company or its assignee(s), in cash (by check), by cancellation 
of all or a portion of any outstanding indebtedness of the Holder to the 
Company (or, in the case of repurchase by an assignee, to the assignee), or 
by any combination thereof within 30 days after receipt of the Notice or in 
the manner and at the times set forth in the Notice.

          (e) HOLDER'S RIGHT TO TRANSFER. If all of the Shares proposed in 
the Notice to be transferred to a given Proposed Transferee are not purchased 
by the Company and/or its assignee(s) as provided in this Section, then the 
Holder may sell or otherwise transfer such Shares to that Proposed Transferee 
at the Offered Price or at a higher price, provided that such sale or other 
transfer is consummated within 120 days after the date of the Notice and 
provided further that any such sale or other transfer is effected in 
accordance with any applicable securities laws and the Proposed Transferee 
agrees in writing that the provisions of this Section shall continue to apply 
to the Shares in the hands of such Proposed Transferee. If the Shares 
described in the Notice are not transferred to the Proposed Transferee within 
such period, a new Notice shall be given to the company, and the Company 
and/or its assignees shall again be offered the Right of First Refusal before 
any Shares held by the Holder may be sold or otherwise transferred.

          (f) EXCEPTION FOR CERTAIN FAMILY TRANSFERS. Anything to the 
contrary contained in this Section notwithstanding, the transfer of any or 
all of the Share during the Optionee's lifetime or on the Optionee's death by 
will or intestacy to the Optionee's immediate family or a trust for the 
benefit of the Optionee's immediate family shall be exempt from the 
Provisions of this Section. "Immediate Family" as used herein shall mean 
spouse, lineal descendant or antecedent, father, mother, brother or sister. 
In such case, the transferee or other recipient shall receive and hold the 
Shares so transferred subject to the provision of this Section, and there 
shall be no further transfer of such Shares except in accordance with the 
terms of this Section.

          (g) TERMINATION OF RIGHT OF FIRST REFUSAL. The Right of First 
Refusal shall terminate as to any Shares 90 days after the first sale of 
Common Stock of the Company to the 

                                       -18-
<PAGE>

general public pursuant to a registration statement filed with and declared 
effective by the Securities and Exchange Commission under the 1933 Act.

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

     6. RESTRICTIVE LEGENDS AND STOP-TRANSFER ORDERS.

          (a) LEGENDS. Optionee understands and agrees that the Company shall 
cause the legends set forth below or legends substantially equivalent 
thereto, to be placed upon any certificate(s) evidencing ownership of the 
Shares together with any other legends that may be required by state or 
federal securities laws:

          THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER 
THE SECURITIES ACT OF 1933 (THE "ACT") AND MAY NOT BE OFFERED, SOLD OR 
OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED 
UNDER THE ACT OR, IN THE OPINION OF COUNSEL IN FORM AND SUBSTANCE 
SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER, 
PLEDGE OR HYPOTHECATION IS IN COMPLIANCE THEREWITH.

          THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN 
RESTRICTIONS ON TRANSFER AND RIGHT OF FIRST REFUSAL OPTIONS HELD BY THE 
ISSUER OR ITS ASSIGNEE(S) AS SET FORTH IN THE EXERCISE NOTICE BETWEEN THE 
ISSUER AND THE ORIGINAL HOLDER OF THESE SHARES, A COPY OF WHICH MAY BE 
OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER. SUCH TRANSFER RESTRICTIONS 
AND RIGHT OF FIRST REFUSAL ARE BINDING ON TRANSFEREES OF THESE SHARE.

          IT IS UNLAWFUL TO CONSUMMATE A SALE OR TRANSFER OF THIS SECURITY OR 
ANY INTEREST THEREIN, OR TO RECEIVE ANY CONSIDERATION THEREFOR, WITHOUT THE 
PRIOR WRITTEN CONSENT OF THE COMMISSIONER OF CORPORATIONS OF THE STATE OF 
CALIFORNIA, EXCEPT AS PERMITTED IN THE COMMISSIONER'S RULES.  Optionee 
understands that transfer of the Shares may be restricted by Section 
260.141.11 of the Rules of the California Corporations Commissioner, a copy 
of which is attached to Exhibit B, the Investment Representation Statement.

          (b) Stop-Transfer Notices. Optionee agrees that, in order to ensure 
compliance with the restrictions referred to herein, the Company may issue 
appropriate "stop transfer" instruction to is transfer agent, if any, and 
that, if the Company transfers its own securities, it may make appropriate 
notations to the same effect in its own records.

                                       -19-
<PAGE>

          (c) Refusal to Transfer. The company shall not be required (i) to 
transfer on its books any Shares that have been sold or otherwise transferred 
in violation of any of the provisions of this Agreement or (ii) to treat as 
owner of such Shares or to accord the right to vote or pay dividends to any 
purchaser or other transferee to whom such Shares shall have been so 
transferred.

     7. SUCCESSORS AND ASSIGNS. The Company may assign any of its rights 
under this Agreement to single or multiple assignees, and this Agreement 
shall inure to the benefit of the successors and assigns of the Company. 
Subject to the restrictions on transfer herein set forth, this Agreement 
shall be binding upon Optionee and his or her heirs, executors, 
administrators, successors and assigns.

     8. INTERPRETATION. Any dispute regarding the interpretation of this 
Agreement shall be submitted by Optionee or by the Company forthwith to the 
Company's Board of Directors or the committee thereof that administers the 
Plan, which shall review such dispute at its next regular meeting. The 
resolution of such a dispute by the Board or committee shall be final and 
binding on the Company and on Optionee.

     9. GOVERNING LAW; SEVERABILITY. This Agreement shall be governed by and 
construed in accordance with the laws of the State of California excluding 
that body of law pertaining to conflict of law. Should any provision of this 
Agreement be determined by a court of law to be illegal or unenforceable, the 
other provisions shall nevertheless remain effective and shall remain 
enforceable.

    10. NOTICES. Any notice required or permitted hereunder shall be given in 
writing and shall be deemed effectively given upon personal delivery or upon 
deposit in the United States mail by certified mail, with postage and fees 
prepaid, addressed to the other party at its address as shown below beneath 
its signature, or to such other address as such party may designate in 
writing from time to time to the party.

    11. FURTHER INSTRUMENTS. The parties agree to execute such further 
instruments and to take such further action as may be reasonably necessary to 
carry out the purposes and intent of this Agreement.
     
    12.  DELIVERY OF PAYMENT. Optionee herewith delivers to the Company the 
full Exercise Price for the Shares.

    13. ENTIRE AGREEMENT. The Plan and Notice of Grant/Option Agreement are 
incorporated herein by reference. This Agreement, the Plan, the Option 
Agreement and the Investment Representation Statement constitute the entire 
agreement of the parties and supersede in their entirety all prior 
undertakings and agreements of the Company and Optionee with respect to the 
subject matter hereof, and is governed by California law except for that body 
of law pertaining to conflict of laws.

                                       -20-
<PAGE>

Submitted by:

OPTIONEE:

Address: ____________________________
         ____________________________
         ____________________________



Accepted by:

CINCO NETWORKS, INC.

By: ________________________________

Title:

ADDRESS:
6601 Koll Center Parkway, Suite 140
Pleasanton, CA 94566


                                       -21-
<PAGE>

                                 CINCO NETWORKS, INC.
                                1997 STOCK OPTION PLAN
                                           
INVESTMENT REPRESENTATION STATEMENT

OPTIONEE:

COMPANY:

SECURITY:

AMOUNT:   $

DATE:

                                 CINCO NETWORKS. INC.
                                           
                                     COMMON STOCK
                                           
     In connection with the purchase of the above-listed securities, the 
undersigned Optionee represents to the Company the following:

     (a) Optionee is aware of the Company's business affairs and financial 
condition and has acquired sufficient information about the Company to reach 
an informed and knowledgeable decision to acquire the securities. Optionee is 
acquiring these securities for investment for Optionee's own account only and 
not with a view to, or for resale in connection with, any "distribution" 
thereof within the meaning of the Securities Act of 1933, as amended (the 
"Securities Act").

     (b) Optionee acknowledges and understands that the securities constitute 
"restricted securities" under the Securities Act and have not been registered 
under the Securities Act in reliance upon a specific exemption therefrom, 
which exemption depends upon, among other things, the bona fide nature of 
Optionee's investment intent as expressed herein. In this connection, 
Optionee understands that, in the view of the Securities and Exchange 
Commission, the statutory basis for such exemption may be unavailable if 
Optionee's representation was predicated solely upon a present intention to 
hold these Securities for the minimum capital gains period specified under 
tax statutes, for a deferred sale, for or until an increase or decrease in 
the market price of the Securities, or for a period of one year or any other 
fixed period in the future. Optionee further understands that the Securities 
must be held indefinitely unless they are subsequently registered under the 
Securities act or an exemption from such registration is available. Optionee 
further acknowledges and understands that the Company is under no obligation 
to register the securities. Optionee understands that the certificate 
evidencing the securities will be imprinted with a legend which prohibits the 
transfer of the Securities unless they are registered or such registration is 
not required in the opinion of counsel satisfactory to the Company, a legend 
prohibiting their transfer without the consent of the Commissioner of 

                                       -22-
<PAGE>

Corporations of the State of California and any other legend required under 
applicable state securities laws.

     (c) Optionee is familiar with the provisions of Rule 701 and Rule 144, 
each promulgated under the Securities Act, which, in substance, permit 
limited public resale of "restricted securities" acquired, directly or 
indirectly from the issuer thereof, in a non-public offering subject to the 
satisfaction of certain conditions. Rule 701 provides that if the issuer 
qualifies under Rule 701 at the time of the grant of the Option to the 
Optionee, the exercise will be exempt from registration under the Securities 
Act. In the event the Company becomes subject to the reporting requirements 
of Section 13 or 15(d) of the Securities Exchange Act of 1934, ninety (90) 
days thereafter (or such longer period as any market stand-off agreement may 
require) the securities exempt under Rule 701 may be resold, subject to the 
satisfaction of certain of the conditions specified by Rule 144, including: 
(1) the resale being make through a broker in an unsolicited "broker's 
transaction" or in transactions directly with a market maker (as said term is 
defined under the Securities Exchange Act of 1934); and, in the case of an 
affiliate, (2) the availability of certain public information about the 
Company, (3) the amount of securities being sold during any three month 
period not exceeding the limitations specified in Rule 144(e), and (4) the 
timely filing of a Form 144, if applicable.

     In the event that the Company does not qualify under Rule 701 at the 
time of grant of the Option, then the securities may be resold in certain 
limited circumstances subject to the provisions of rule 144, which requires 
the resale to occur not less than two years after the party has purchased, 
and made full payment for, within the meaning of Rule 144, the securities to 
be sold; and, in the case of an affiliate, or of a non-affiliate who has held 
the securities less than three years, the satisfaction of the conditions set 
forth in sections (1), (2), (3) and (4) of the paragraph immediately above.

     (d) Optionee hereby agrees that if so requested by the Company or any 
representative of the underwriters in connection with any registration of the 
offering of any securities of the Company under the 1933 Act, the Optionee 
shall not sell or otherwise transfer any Shares or other securities of the 
Company during the 180-day period following the effective date of a 
registration statement of the Company filed under the 1933 Act; provided, 
however, that such restriction shall only apply to the first registration 
statement of the Company to become effective under the 1933 Act which include 
securities to be sold on behalf of the Company to the public in an 
underwritten public offering under the 1933 Act. The Company may impose 
stop-transfer instructions with respect to securities subject to the 
foregoing restrictions until the end of such 180-day period.

     (e) Optionee further understand that in the event all of the applicable 
requirements of Rule 701 or 144 are not satisfied, registration under the 
Securities Act, compliance with Regulation A, or some other registration 
exemption will be required; and that, notwithstanding the fact the Rules 144 
and 701 are not exclusive, the Staff of the Securities and exchange 
Commission has expressed its opinion that persons proposing to sell private 
placement securities other than in a registered offering and otherwise than 
pursuant to Rules 144 or 701 will have a substantial burden of proof in 
establishing that an exemption from registration is available for 

                                       -23-
<PAGE>

such offers or sales, and that such persons and their respective brokers who 
participate in such transactions do so at their own risk. Optionee 
understands that no assurances can be given that any such other registration 
exemption will be available in such event.

     (f) Optionee understands that the certificate evidencing the Securities 
will be imprinted with a legend which prohibits the transfer of the 
Securities without the consent of the Commissioner of Corporations of 
California. Optionee has read the applicable Commissioner's Rules with 
respect to such restriction, a copy of which is attached.

Signature of Optionee:

Dated:


                                       -24-


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