SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D
                                Amendment No. ___

                    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)

                                  July 26, 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.  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        809,698
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   809,698

                                        (10) Shared Dispositive Power -0-


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  809,698
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  1.77%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  PN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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        55,705
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   55,705

                                        (10) Shared Dispositive Power -0-


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  55,705
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  0.12%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  PN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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        148,549
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   148,549

                                        (10) Shared Dispositive Power -0-


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  148,549
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  0.32%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  PN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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        1,013,952
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   1,013,952

                                        (10) Shared Dispositive Power -0-


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  1,013,952
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  2.21%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  PN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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        5,026,642
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   5,026,642

                                        (10) Shared Dispositive Power -0-


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  5,026,642
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  10.96%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  PN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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        5,026,642
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   5,026,642

                                        (10) Shared Dispositive Power -0-


  (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  5,026,642
--------------------------------------------------------------------------------
  (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  10.96%
--------------------------------------------------------------------------------
  (14) Type Of Reporting Person

                  PN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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        5,026,642
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   5,026,642

                                        (10) Shared Dispositive Power -0-


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  6,040,594
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  13.17%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  IN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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        6,040,594
Beneficially Owned
By Each Reporting                        (8) Shared Voting Power      -0-
Person With
                                         (9) Sole Dispositive Power   6,040,594

                                        (10) Shared Dispositive Power -0-


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  6,040,594
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  13.17%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  IN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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      6,040,594
Person With
                                         (9) Sole Dispositive Power   -0-

                                        (10) Shared Dispositive Power 6,040,594


 (11) Aggregate Amount Beneficially Owned By Each Reporting Person

                  6,040,594
--------------------------------------------------------------------------------
 (12) Check If The Aggregate Amount In Row (11) Excludes Certain Shares*

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

                  13.17%
--------------------------------------------------------------------------------
 (14) Type Of Reporting Person

                  IN
--------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!



<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  Schedule  13D  Statement 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 809,698  shares of
         Common Stock, or approximately  1.77% of the shares deemed  outstanding
         by the Issuer  (45,852,510)  as of July 26, 1999.  AVISVP is the direct
         beneficial  owner of 55,705  shares of Common Stock,  or  approximately
         0.12% of the shares deemed outstanding by the Issuer (45,852,510) as of
         July 26,  1999.  AVIPGFII  is the  direct  beneficial  owner of 148,549
         shares of Common  Stock,  or  approximately  0.32% of the shares deemed
         outstanding by the Issuer (45,852,510) as of July 26, 1999. AVIC is the
         direct  beneficial  owner of  5,026,642  shares  of  Common  Stock,  or
         approximately  10.96% of the shares  deemed  outstanding  by the Issuer
         (45,852,510) as of July 26, 1999.




<PAGE>


                                                             Page 12 of 14 Pages

         (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 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.



<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






<PAGE>


                                    EXHIBIT A                Page 14 of 14 Pages

                             Joint Filing Statement

         We, the  undersigned,  hereby  express our agreement  that the attached
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