Foundry Networks Second Quarter Earnings Release.

Business Editors

SAN JOSE, Calif.--(BUSINESS WIRE)--July 15, 2000

Foundry Networks(TM), Inc. (Nasdaq: FDRY) today announced that it will release the financial results for its second quarter ended June 30, 2000 after the close of market, on July 18, 2000. A conference call will follow at 2:00 p.m. Pacific Time. A live Webcast of this call will be available at www.foundrynet.com.

About Foundry Networks

Foundry Networks, Inc. (NASDAQ: FDRY) is a leader in high performance end-to-end switching and routing solutions including Internet routers, Layer 3 switches and Layer 4-7 Internet traffic and content management switches. Foundry products are installed in the world's largest ISPs including AOL (NYSE: AOL), EarthLink (NASDAQ: ELNK), AT&T WorldNet, MSN, and Cable & Wireless (NYSE: CWP). Foundry products are also installed in large enterprise, entertainment, pharmaceutical and manufacturing companies as well as search engines, e-commerce sites, universities and government organizations. Some of these customers include: The University of Washington, LucasFilm, Yahoo! (NASDAQ: YHOO), LTV Steel (NYSE: LTV), Incyte Pharmaceuticals (NASDAQ: INCY), U.S. Army, Air Force and Navy, NASA and NIH. For more information about the company and its products, call 1.888.TURBO.LAN or visit our web site at www.foundrynetworks.com.

Note to Editors: Foundry Networks is a trademark of Foundry Networks, Inc. All other trademarks are the sole property of their respective holders.