SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G/A

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                                (AMENDMENT NO. 2)*

                             Extreme Networks, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

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

                                    30226D10
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

Check the following box if a fee is being paid with this |_|  statement.  (A fee
is not required only if the filing person:  (1) has a previous statement on file
reporting  beneficial  ownership  of more  than  five  percent  of the  class of
securities  described  in Item 1;  and (2) has  filed  no  amendment  subsequent
thereto reporting  beneficial  ownership of five percent or less of such class.)
(See Rule 13d-7.)

*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 the
disclosures provided in a prior cover page.

The information required in 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 4 Pages

SEC 1745 (10-85)


CUSIP NO. 30226D10 13G PAGE 2 OF 4 PAGES - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Massachusetts Financial Services Company ("MFS") I.R.S. Identification No.: 04-2747644 - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) / / (b) / / - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 8,229,132 shares of common stock BENEFICIALLY - -------------------------------------------------------------------------------- OWNED BY 6 SHARED VOTING POWER EACH - -------------------------------------------------------------------------------- REPORTING 7 SOLE DISPOSITIVE POWER PERSON 8,254,282 shares of common stock WITH - -------------------------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,254,282 shares of common stock of which shares are also beneficially owned by certain other non-reporting entities as well as MFS. - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 7.3% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IA - -------------------------------------------------------------------------------- *SEE INSTRUCTION BEFORE FILLING OUT!

SCHEDULE 13G/A PAGE 3 OF 4 PAGES ITEM 1: (a) NAME OF ISSUER: Extreme Networks, Inc. (b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: 3585 Monroe St. Santa Clara, CA 95051 ITEM 2: (a) NAME OF PERSON FILING: Massachusetts Financial Services Company ("MFS") (b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE: 500 Boylston Street Boston, MA 02116 (c) CITIZENSHIP: See Item 4 on page 2 (d) TITLE OF CLASS OF SECURITIES: Common Stock (e) CUSIP NUMBER: 30226D10 ITEM 3: See Item 12 on page 2 ITEM 4: (a) AMOUNT BENEFICIALLY OWNED: See Item 9 on page 2 (b) PERCENT OF CLASS: See Item 11 on page 2 (c) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS VOTING AND DISPOSITIVE POWERS: See Items 5 and 7 on page 2

SCHEDULE 13G/A PAGE 4 OF 4 PAGES ITEM 5: OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS: Inapplicable ITEM 6: OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON: Inapplicable ITEM 7: IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY: Inapplicable ITEM 8: IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP: Inapplicable ITEM 9: NOTICE OF DISSOLUTION OF GROUP: Inapplicable ITEM 10: CERTIFICATION: By signing below I certify that to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect. 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. Date: June 29, 2001 Massachusetts Financial Services Company By: STEPHEN E. CAVAN Stephen E. Cavan Senior Vice President, Secretary and General Counsel