Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the shares of Common Stock, $0.001 par value per share, of Extreme Networks, Inc.  This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated:  March 15, 2010

RAMIUS VALUE AND OPPORTUNITY MASTER FUND LTD By: RCG Starboard Advisors, LLC,        its investment manager   RAMIUS NAVIGATION MASTER FUND LTD By: Ramius Advisors, LLC,        its investment advisor   RAMIUS ENTERPRISE MASTER FUND LTD By: Ramius Advisors, LLC,        its investment advisor   RCG PB, LTD By: Ramius Advisors, LLC,        its investment advisor   RCG STARBOARD ADVISORS, LLC By: Ramius LLC,        its sole member   RAMIUS ADVISORS, LLC By: Ramius LLC,        its sole member   RAMIUS LLC By: Cowen Group, Inc.,         its sole member   COWEN GROUP, INC.   RCG HOLDINGS LLC By: C4S & Co., L.L.C.,        its managing member   C4S & CO., L.L.C.  

By:	/s/ Jeffrey M. Solomon
	Name:	Jeffrey M. Solomon
	Title:	Authorized Signatory

/s/ Jeffrey M. Solomon

JEFFREY M. SOLOMON

Individually and as attorney-in-fact for Peter A.

Cohen, Morgan B. Stark and Thomas W. Strauss