Exhibit 2.1 AGREEMENT AND PLAN OF MERGER This Agreement and Plan of Merger (this "Agreement") is entered into on May 31, 2004, by and among F5 Networks, Inc., a Washington corporation ("Buyer"), Fire5, Inc.., a Delaware corporation and a wholly owned...Agreement and Plan of Merger • June 2nd, 2004 • F5 Networks Inc • Services-computer integrated systems design • New York
