SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                                 Amendment No. 2
                                              ---

                    Under the Securities Exchange Act of 1934

                             EXTREME NETWORKS, INC.
                             ----------------------
                                (Name of Issuer)

                                  Common Stock
                         ------------------------------
                         (Title of Class of Securities)

                                    30226D106
                                 --------------
                                 (CUSIP Number)

                                  Austin Grose
                            One First Street, Suite 2
                               Los Altos, CA 94022
                                 (650) 917-5905
           -----------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                October 19, 1999
             -------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of ss.ss.240.13d-1(e),  240.13d-1(f) or 240.13d-1(g), check the
following box.

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule,  including all exhibits.  See  ss.240.13d-7(b) for other
parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


                        (Continued on following page(s))

                               Page 1 of 14 pages



<PAGE>


CUSIP No. 30226D106                    13D                    Page 2 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     Associated Venture Investors III, L.P.
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     WC
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     California
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        610,056
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      -0-
Person With
                                        (9)  Sole Dispositive Power   610,056

                                       (10)  Shared Dispositive Power -0-

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     610,056
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     1.23%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     PN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       2


<PAGE>


CUSIP No. 30226D106                    13D                    Page 3 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     AVI - Silicon Valley Partners, L.P.
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     AF
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     California
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power         41,971
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power       -0-
Person With
                                        (9)  Sole Dispositive Power    41,971

                                       (10)  Shared Dispositive Power  -0-

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     41,971
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     0.08%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     PN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       3


<PAGE>


CUSIP No. 30226D106                    13D                    Page 4 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     AVI Partners Growth Fund II, L.P.
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     WC
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     California
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        111,922
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      -0-
Person With
                                        (9)  Sole Dispositive Power   111,922

                                       (10)  Shared Dispositive Power -0-

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     111,922
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     0.23%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     PN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       4


<PAGE>


CUSIP No. 30226D106                    13D                    Page 5 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     AVI Management Partners III, L.P.
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     WC
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     California
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        763,949
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      -0-
Person With
                                        (9)  Sole Dispositive Power   763,949

                                       (10)  Shared Dispositive Power -0-

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     763,949
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     1.54%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     PN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       5


<PAGE>


CUSIP No. 30226D106                    13D                    Page 6 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     AVI Capital, L.P.
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     WC
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     California
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        3,787,253
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      -0-
Person With
                                        (9)  Sole Dispositive Power   3,787,253

                                       (10)  Shared Dispositive Power -0-

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     3,787,253
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     7.62%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     PN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       6


<PAGE>


CUSIP No. 30226D106                    13D                    Page 7 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     AVI Capital Management, L.P.
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     WC
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     California
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        3,787,253
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      -0-
Person With
                                        (9)  Sole Dispositive Power   3,787,253

                                       (10)  Shared Dispositive Power -0-

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     3,787,253
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     7.62%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     PN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       7


<PAGE>


CUSIP No. 30226D106                    13D                    Page 8 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     Peter L. Wolken
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     AF
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     U.S.A.
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        -0-
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      4,551,202
Person With
                                        (9)  Sole Dispositive Power   -0-

                                       (10)  Shared Dispositive Power 4,551,202

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     4,551,202
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     9.15%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     IN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                        8


<PAGE>


CUSIP No. 30226D106                    13D                    Page 9 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     Brian J. Grossi
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     AF
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     U.S.A.
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        -0-
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      4,551,202
Person With
                                        (9)  Sole Dispositive Power   -0-

                                       (10)  Shared Dispositive Power 4,551,202

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     4,551,202
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     9.15%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     IN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       9


<PAGE>


CUSIP No. 30226D106                    13D                   Page 10 of 14 Pages

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

(1)  Names of  Reporting  Persons.  SS or I.R.S.  Identification  Nos.  of Above
     Persons

     Barry M. Weinman
--------------------------------------------------------------------------------
(2)  Check The Appropriate Box If A Member Of A Group       (a):
                                                            (b)X
--------------------------------------------------------------------------------
(3)  SEC Use Only

--------------------------------------------------------------------------------
(4)  Source Of Funds*

     AF
--------------------------------------------------------------------------------
(5)  Check Box If Disclosure Of Legal  Proceedings Is Required Pursuant To Items
     2(d) Or 2(e):

--------------------------------------------------------------------------------
(6)  Citizenship Or Place Of Organization

     U.S.A.
--------------------------------------------------------------------------------
Number Of Shares                        (7)  Sole Voting Power        -0-
Beneficially Owned
By Each Reporting                       (8)  Shared Voting Power      4,551,202
Person With
                                        (9)  Sole Dispositive Power   -0-

                                       (10)  Shared Dispositive Power 4,551,202

(11) Aggregate Amount Beneficially Owned By Each Reporting Person

     4,551,202
--------------------------------------------------------------------------------
(12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

--------------------------------------------------------------------------------
(13) Percent Of Class Represented By Amount In Row (11)

     9.15%
--------------------------------------------------------------------------------
(14) Type Of Reporting Person

     IN
--------------------------------------------------------------------------------

                      *SEE INSTRUCTION BEFORE FILLING OUT!

                                       10


<PAGE>


                                                             Page 11 of 14 Pages

ITEM 1. SECURITY AND ISSUER

        Class of Securities:        Common Stock

        Issuer:                     Extreme Networks, Inc.

        Principal Address:          3585 Monroe Street
                                    Santa Clara, California 95051


ITEM 2. IDENTITY AND BACKGROUND

         (a)-(c) The  undersigned  hereby file this Amendment to Schedule 13D on
behalf of Associated  Venture  Investors  III, L.P.  ("AVI III"),  AVI - Silicon
Valley  Partners,  L.P.  ("AVISVP"),  AVI Partners Growth Fund II, L.P.  ("AVGPF
II"),  AVI  Management  Partners  III, L.P.  ("AVIMP  III"),  AVI Capital,  L.P.
("AVIC"), AVI Capital Management, L.P. ("AVICM"), Peter L. Wolken ("PLW"), Brian
J. Grossi  ("BJG") and Barry M.  Weinman  ("BMW").  The  principal  business and
office  address for each of the above is One First  Street,  Suite 2, Los Altos,
California  94022.  AVI III,  AVISVP,  AVIPGFII  and AVIC  are  venture  capital
investment partnerships. AVIMP III is the general partner of AVI III, AVISVP and
AVIPGFII.  AVICM is the general  partner of AVIC.  PLW,  BJG and BMW are general
partners of AVIMP III and AVICM.

         (d)-(e)  Not Applicable

         (f) AVIIII, AVISVP,  AVIPGFII, AVIMP III, AVIC and AVICM are California
limited partnerships. PLW, BJG and BMW are citizens of the United States.


ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

         The  purchases  by AVI III,  AVISVP,  AVIPGFII  and AVIC were made from
working capital.



ITEM 4. PURPOSE OF TRANSACTION

         The  acquisitions  of the securities of the Issuer by AVI III,  AVISVP,
AVIPGFII and AVIC were made for investment.



ITEM 5. INTEREST IN SECURITIES OF THE ISSUER

         (a)
                  AVI III is the direct  beneficial  owner of 610,056  shares of
         Common Stock, or approximately  1.23% of the shares deemed  outstanding
         by the Issuer  (49,716,379) as reported n the Company's 10K as filed on
         September  24, 1999.  AVISVP is the direct  beneficial  owner of 41,971
         shares of Common  Stock,  or  approximately  0.08% of the shares deemed
         outstanding by the Issuer  (49,716,379) as reported n the Company's 10K
         as filed on September 24, 1999. AVIPGFII is the direct beneficial owner
         of 111,922 shares of Common Stock, or approximately 0.23% of the shares
         deemed  outstanding  by  the  Issuer  (49,716,379)  as  reported  n the
         Company's  10K as filed  on  September  24,  1999.  AVIC is the  direct
         beneficial  owner of 3,787,253 shares of Common Stock, or approximately
         7.62% of the shares deemed  outstanding by the Issuer  (49,716,379)  as
         reported n the Company's 10K as filed on September 24, 1999. On October
         19, 1999, AVI III sold 101,195 shares of the Company's Common Stock. On
         October 19,  1999,  AVISVP sold 6,982  shares of the  Company's  Common
         Stock.  On  October  19,  1999,  AVIPGFII  sold  18,566  shares  of the
         Company's  Common Stock.  On October 19, 1999, AVIC sold 628,225 shares
         of the Company's Common Stock.

         (b)
                  The general  partner of AVI III,  AVISVP and  AVIPGFII,  AVIMP
         III,  manages  the shares  held by AVI III,  AVISVP and  AVIPGFII.  The
         general partner of AVIC,  AVICM,  manages the shares held by AVIC. PLW,
         BJG and

                                       11


<PAGE>


                                                             Page 12 of 14 Pages

         BMW,  acting  together,  have the  power  to  direct  the  vote  and/or
         disposition of the shares held by AVI III, AVISVP, AVIPGFII and AVIC.

         (c)
                  Transactions  effected  in the  past 60  days  by the  persons
         listed in Item 2 are disclosed in (a) above.

         (d)
                  Except as described in this Schedule 13D Statement,  no person
         has the power to direct the receipt of  dividends on or the proceeds of
         sales of the shares of Common Stock owned by AVI III, AVISVP,  AVIPGFII
         and AVIC.

         (e)
                  Not Applicable


ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO
        THE SECURITIES OF THE ISSUER

         To the best  knowledge  of the  undersigned,  there  are no  contracts,
understandings,  arrangements,  or relationships (legal or otherwise) giving the
persons  named in Item 2 and  between  such  persons  and any other  person with
respect to the securities of Issuer,  including, but not limited to, transfer or
voting of any of the Issuer's securities, finder's fees, joint ventures, loan or
option agreement, puts or calls, guarantees of profits,  divisions of profits or
loss, or the giving or withholding of proxies.


ITEM 7. EXHIBITS

        Exhibit A:  Joint Filing Statement.

                                       12


<PAGE>


                                                             Page 13 of 14 Pages

                                    SIGNATURE

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.


Associated Venture Investors III, L.P.         AVI Management Partners III, L.P.

By: AVI Management Partners III, L.P.
    ITS GENERAL PARTNER                        By: /s/ Peter L. Wolken
                                                   -----------------------
                                                   General Partner

By: /s/ Peter L. Wolken
    -----------------------
    General Partner



Associated Venture Investors III, L.P.         AVI Capital, L.P.

By: AVI Management Partners III, L.P.          By: AVI Capital Management, L.P.
    Its General Partner                            Its General Partner

By: /s/ Peter L. Wolken                        By: /s/ Peter L. Wolken
    -----------------------                        -----------------------
    General Partner                                General Partner



AVI - Silicon Valley Investors, L.P.           AVI Capital Management, L.P.

By: AVI Management Partners III, L.P.
    Its General Partner
                                               By: /s/ Peter L. Wolken
                                                   -----------------------
By: /s/ Peter L. Wolken                            General Partner
    -----------------------
    General Partner


AVI Partners Growth Fund II, L.P.

By: AVI Management Partners III, L.P.
    Its General Partner

By: /s/ Peter L. Wolken
    -----------------------
    General Partner

    /s/ Peter L. Wolken                            /s/ Brian J. Grossi
    -----------------------                        -----------------------
    Peter L. Wolken                                Brian J. Grossi

    /s/ Barry M. Weinman
    -----------------------
    Barry M. Weinman

                                       13


<PAGE>


                                    EXHIBIT A                Page 14 of 14 Pages

                             Joint Filing Statement

         We, the  undersigned,  hereby  express our agreement  that the attached
Amendment No. 1 to Schedule 13D is filed on behalf of each of us.


Associated Venture Investors III, L.P.         AVI Management Partners III, L.P.

By: AVI Management Partners III, L.P.
    ITS GENERAL PARTNER                        By: /s/ Peter L. Wolken
                                                   -----------------------
                                                   General Partner

By: /s/ Peter L. Wolken
    -----------------------
    General Partner



Associated Venture Investors III, L.P.         AVI Capital, L.P.

By: AVI Management Partners III, L.P.          By: AVI Capital Management, L.P.
    Its General Partner                            Its General Partner

By: /s/ Peter L. Wolken                        By: /s/ Peter L. Wolken
    -----------------------                        -----------------------
    General Partner                                General Partner



AVI - Silicon Valley Investors, L.P.           AVI Capital Management, L.P.

By: AVI Management Partners III, L.P.
    Its General Partner
                                               By: /s/ Peter L. Wolken
                                                   -----------------------
By: /s/ Peter L. Wolken                            General Partner
    -----------------------
    General Partner


AVI Partners Growth Fund II, L.P.

By: AVI Management Partners III, L.P.
    Its General Partner

By: /s/ Peter L. Wolken
    -----------------------
    General Partner

    /s/ Peter L. Wolken                            /s/ Brian J. Grossi
    -----------------------                        -----------------------
    Peter L. Wolken                                Brian J. Grossi

    /s/ Barry M. Weinman
    -----------------------
    Barry M. Weinman

                                       14