Exhibit 23.1

                               CONSENT OF KPMG LLP

The Board of Directors
Brocade Communications Systems, Inc.

We hereby consent to the incorporation by reference into Brocade Communications
Systems, Inc.'s previously filed Registration Statements on Form S-8 (Nos.
333-103571, 333-85187, 333-95653, 333-39126, 333-53734, 333-64260, 333-72480,
and 333-100797) and Form S-3 (No. 333-84698) of our report dated November 14,
2003, except as to note 17, which is as of November 18, 2003, with respect to
the consolidated balance sheets of Brocade Communications Systems, Inc. and
subsidiaries as of October 25, 2003 and October 26, 2002, and the related
consolidated statements of operations, stockholders' equity and comprehensive
income (loss), and cash flows for each of the years in the two-year period ended
October 25, 2003, and related financial statement schedule, which report appears
in this annual report on Form 10-K of Brocade Communications Systems, Inc. for
the year ended October 25, 2003.



/s/ KPMG LLP

Mountain View, California
January 19, 2004