SANTA CLARA, Calif.; October 2, 2008 – Providing proven network and communication solutions for global customers through its Global Strategic Alliance with Avaya, Extreme Networks, Inc. (Nasdaq:

EXTR) today announced it has successfully passed interoperability compliance-testing of its new BlackDiamond® 8800 modules with Avaya's market-leading IP telephony solutions. Extreme Networks’ G48Tc and G48Te2 modules provide high density 10/100/1000 Ethernet connectivity with field upgradeable Power over Ethernet (PoE) functionality.

Extreme Networks® G48Tc and G48Te2 modules were tested for interoperability with the Avaya S8500 Server, Avaya G650 Media Gateways and Avaya’s IP telephones.

"The BlackDiamond 8800 modular switch keeps with our theme of offering enterprises versatile Gigabit performance and expansive Power over Ethernet options at the network edge,” said Gregory Heath, director of convergence solutions for Extreme Networks. "With a modular switch that is suited for the converged edge and tested with Avaya’s IP telephony, customers gain scalability that is required for deploying hundreds or thousands of IP handsets and similar edge devices easily and efficiently.”

Power over Ethernet (PoE) allows BlackDiamond 8800 series switches to support large converged and wireless LAN deployments. The BlackDiamond 8810 switch can scale to support up to 432 IP phones in a single chassis. The switch supports class 1, 2 and 3 phones as well as the emerging enhanced PoE standard, ePoE, when more than 15.4 watts are required by a device. The result is powerful voice and data support with scalable power and bandwidth capacity.

Extreme Networks products were validated for interoperability through the Avaya DevConnect program – an initiative to promote the development, compliance-testing and co-marketing of innovative third-party products that are compatible with Avaya’s standards-based solutions. Extreme Networks, a platinum member of the DevConnect program, has achieved compliance for a broad portfolio of core to edge network infrastructure products.

“Working with Extreme Networks provides customers with a wide range of high availability network infrastructure options that allow them to grow as they integrate IP communications," said Eric Rossman, vice president, developer relations and technical alliances, Avaya. "With these solutions, enterprises are better enabled to take advantage of the rich features of Unified Communications to increase workgroup productivity and improve interaction with their customers.”

About Avaya Inc.

Avaya delivers Intelligent Communications solutions that help companies transform their businesses to achieve marketplace advantage. More than 1 million businesses worldwide, including more than 90 percent of the FORTUNE 500®, use Avaya solutions for IP Telephony, Unified Communications, Contact Centers and Communications-Enabled Business Processes. Avaya Global Services provides comprehensive service and support for companies, small to large. For more information, visit the Avaya Web site: http://www.avaya.com For more information on the Avaya DeveloperConnection Program, visit

http://www.devconnectprogram.com/.

About Extreme Networks, Inc.

Extreme Networks designs, builds, and installs Ethernet infrastructure solutions that help solve the toughest business communications challenges. The company’s commitment to open networking sets us apart from the alternatives by delivering meaningful insight and unprecedented control to applications and services. Extreme Networks believes that openness is the best foundation for growth, freedom, flexibility and choice. The company focuses on enterprises and service providers who demand high performance, converged networks that support voice, video and data over a wired and wireless infrastructure. For more information, visit: http://www.extremenetworks.com

This announcement contains forward-looking statements that involve risks and uncertainties, including statements regarding the features and performance of the BlackDiamond switches. Actual results could differ materially from those projected in the forward-looking statements as a result of certain risk factors, including, but not limited to product and network configuration. We undertake no obligation to update the forward-looking information in this release. More information about potential factors that could affect our business and financial results is included in our filings with the Securities and Exchange Commission, including, without limitation, under the captions: "Management's Discussion and Analysis of Financial Condition and Results of Operations," and "Risk Factors" (http://www.sec.gov).

Extreme Networks and BlackDiamond are either registered trademarks or trademarks of Extreme Networks, Inc. in the United States and other countries. All other trademarks are the property of their respective owners.