Spirent, Extreme Networks Team to Demonstrate Performance of Industry’s Open Fabric Data Center Solutions

Extreme Networks Leverages Spirent Data Center Testing Solution to Demonstrate Switch Performance at 20 Terabits Traffic Rate

Las Vegas – May 11, 2010 — Extreme Networks has selected Spirent Communications’ high-speed data center and cloud computing test solution to showcase the performance of Extreme Networks® Open Fabric data center solution featuring the newly announced BlackDiamond® X8 switch, a high capacity, high density 40GbE core chassis for Cloud environments, which is expected to begin customer trials in October 2011. The demonstration, featuring a 20 Tbps Ethernet switch fabric, marks one of the first public tests in which traffic is scaled to over double digit terabit speeds with dense 40GbE port connectivity.

Extreme Networks Open Fabric data center solution includes a portfolio of purpose-built, Cloud-scale data center network switching solutions allowing organizations to more cost-effectively build highly scalable, mobile and virtualized networks with low latency, high density and energy efficiency.

“The ability to validate services and infrastructure between any points in the cloud is critical, particularly as enterprises and cloud providers look to scale and virtualize their networks,” said Harpreet Chadha, vice president of product management for Extreme Networks. “Spirent has allowed us to put our latest Open Fabric data center solution, the BlackDiamond X8, to the test and demonstrate its 40 GbeE performance and capacity to deliver critical services.”

For this demonstration, Extreme Networks is utilizing the Spirent TestCenter HyperMetrics 40/100G Ethernet solution. Because modern switch and router fabrics span multiple chassis and can be expanded to build systems supporting hundreds or thousands of ports, the level of traffic produced by the Spirent HyperMetrics module can fully load modern multi-terabit backplanes and fabrics to assess system performance and verify reliability when deployed in large mission critical environments supporting millions of user application flows. Spirent’s high speed data center solutions offers cloud data center switch manufacturers space efficient, power efficient, and cost effective solutions for loading multi-terabit fabrics to full capacity.

“Recent reports regarding cloud attacks, downtime and poor performance raise questions about the amount of time and money that can potentially be saved by thorough testing,” said Jeff Schmitz, vice president, Networks & Applications at Spirent. “It is gratifying to offer companies such as Extreme Networks the data density and application traffic capacity required to conduct cloud testing at a cost-effective price point.”

For more information on Spirent’s data center and enterprise testing solutions visit http://www.spirent.com/Networks-and-Applications/Enterprise_networks.aspx

About Extreme Networks

Extreme Networks, Inc. (Nasdaq: EXTR) delivers networks for the mobile world. The company's open network solutions enable a quality user experience, providing a platform for improved business agility. From the converged mobile edge of enterprises to virtualized clouds, and from data centers to global carrier networks that backhaul mobile traffic, Extreme Networks' extensible services architecture helps set a foundation for mobility, user awareness and faster performance to empower people and machines to connect and move seamlessly. Extreme Networks is headquartered in Santa Clara, California, with offices in more than 50 countries worldwide. For more information, visit: www.extremenetworks.com

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

Except for the historical information contained herein, the matters set forth in this press release, including without limitation statements as to features and benefits of Extreme Networks products are forward-looking statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements speak only as of the date. Because such statements deal with future events, they are subject to risks and uncertainties, including network design and actual results of use of the product in different environments. We undertake no obligation to update the forward-looking information in this release. Other important factors which could cause actual results to differ materially are contained in the Company's 10-Qs and 10-Ks which are on file with the Securities and Exchange Commission. http://www.sec.gov.