ADVA & Extreme Networks Partner to Deliver State-Of-The-Art IP-Over-Optical Solutions.

Business Editors

MARTINSRIED/MUNICH, Germany and RAMSEY,N.J.---(BUSINESS WIRE)--Aug. 20, 2001--ADVA Optical Networking (German Neuer Markt: ADV), a leading global provider of optical networking solutions, today announced that they have joined Extreme Networks, Inc.'s [Nasdaq: EXTR] "Go Purple" vendor partnering program. "Go Purple" delivers an elite class of IP solutions for large enterprises and service provider networks enabling customers to select from a range of industry-proven and compatible products.

"ADVA brings key optical technology to our Go Purple IP solutions portfolio," said Paul De Zan, Vice President of Corporate Marketing at Extreme Networks. "Each of our Go Purple partners provides unique and complementary technologies that enable a best-of-breed network infrastructure for the most demanding applications."

XchangePoint, a leading pan-European Internet peering point provider, has already deployed the combined ADVA and Extreme Networks solution to support commercial Internet peering points across Europe. ADVA's carrier-class DWDM solution coupled with Extreme Networks' advanced Gigabit Ethernet networking provided a powerful combination that was easy to integrate and helped position XchangePoint strategically.

"We chose ADVA Optical Networking along with Extreme Networks' Ethernet switching because it delivers a unified and compatible platform with exceptional price and performance features," said Keith Mitchell, CTO at XchangePoint. "The forthcoming scalability to 10 Gigabit Ethernet coupled with emerging optical technology greatly increases bandwidth and alleviates the bottlenecks of the Internet."

"We are pleased to be a part of the "Go Purple" program," said Abdul Kasim, Vice President of Marketing at ADVA. "Customers are increasingly demanding a complete multi-layered solution. The "Go Purple" program enables ADVA to augment its Fiber Service Platform (FSP) portfolio with Extreme Networks' solution and ultimately provide a very compelling value proposition to our customers; at the same time, it allows us to continue to focus on maintaining our leadership in metro optical networking."

Partners and prospective partners can find the "Go Purple" home page on the Web at: http://www.extremenetworks.com/go/purple.htm

For more information about XchangePoint please visit http//www.xchangepoint.net [pilcrow (paragraph sign)] For more information about ADVA Optical Networking, please visit us at www.advaoptical.com August 20, 2001

About Extreme Networks, Inc.

Extreme Networks, Inc. delivers a simplified approach for building networks based on its corporate vision of Ethernet Everywhere(R) networks. The Company's family of BlackDiamond(R), Alpine(TM), and Summit(R) switching solutions incorporate a unique combination of ExtremeWare(R) management software and an ASIC-based common architecture to provide Global 2000 enterprises, telecommunications companies, Internet Service Providers and content providers with the ability to increase the flow of information and accommodate future network growth.

Headquartered in Santa Clara, Calif., Extreme Networks was listed as the Fastest Growing Company in Silicon Valley in 2000 based on three-year revenue growth by the San Jose and Silicon Valley Business Journal. For more information, visit www.extremenetworks.com.

About ADVA Optical Networking

ADVA Optical Networking is a leading global provider of optical networking solutions for the deployment, management, and delivery of high-speed services for the metropolitan area and enterprise markets. ADVA is leveraging its core technologies and expertise in the enterprise market to maximize growth opportunities in the exploding metro market. Key services include high-speed data, storage, video, and voice applications. The ADVA product portfolio is sold through an international network of distributors, value-added resellers, and original equipment manufacturers, in coordination with ADVA 's own regional sales offices and direct service provider sales force. Customers include over 37 telecommunications organizations and metro service providers, as well as more than ca. 500 Fortune 1,000 companies, universities, and government agencies. Founded in 1994 and headquartered in Munich, Germany, ADVA has ten sites worldwide.

Published by:

ADVA AG Optical Networking, Martinsried/Munich and Meiningen, Germany ADVA Optical Networking Inc., Ramsey/New Jersey, USA www.advaoptical.com

Extreme Networks, ExtremeWare, Ethernet Everywhere, BlackDiamond and Summit are registered trademarks of Extreme Networks, Inc., and Alpine is a trademark of Extreme Networks, Inc., in the United States and other countries.