Atheros Provides High Performance 802.11a/b/g Technology to Foundry for IronPoint Wireless Products

NETWORLD+INTEROP, LAS VEGAS, May 11, 2004 – Atheros Communications, Inc. (Nasdaq: ATHR), a leading developer of advanced wireless LAN (WLAN) chipsets, and Foundry Networks (Nasdaq: FDRY), a performance and total solutions leader for end-to-end switching and routing, will be displaying Foundry's IronPoint 200 Access Points in the Atheros NetWorld+Interop booth, #2801, from May 11-13. Foundry's IronPoint access points, which are based on Atheros chipset technology, are among the industry's highest-performance wireless access points. This popular series of dual band enterprise-class access points has been shipping to Foundry customers worldwide since October 2003.

Foundry's IronPoint 200 access point offers a powerful central processor, ample memory, dual concurrent high-performance radios, and a modular design that makes it fully field upgradeable. The Atheros AR5001X+ chipset provides multi-mode 802.11a/b/g operation for the access point. These products are compliant with the IEEE 802.11a and 802.11g standards and are backward compatible with any 802.11b device.

The IronPoint 200 access point also offers enhanced WLAN performance to its enterprise users by enabling Atheros' 802.11a Turbo technology. This performance enhancement delivers real throughput rates of over 40 Mbps. The Atheros chipset also provides enterprise-grade security, with hardware support for the latest WLAN security standards including Wi-Fi Protected Access (WPA) and 802.11i Enhanced Security using the Advanced Encryption Standard (AES).

"Atheros technology delivers the high performance and advanced security features required for enterprise-class applications and networks," said Colin Macnab, vice president of marketing and business development of Atheros Communications. "Foundry understands the needs of enterprises and has introduced innovative products to meet demand. We are pleased to be working with Foundry to offer enterprise-class WLAN products that include the industry's best performing 802.11a/b/g technology."

"Dual-band 802.11a/b/g wireless networking is the best option for enterprises that are deploying a wireless LAN," said Phil Kwan, Integrated Edge product line manager for Foundry. "Atheros' technology offers high performance and flexibility, giving our enterprise customers a range of performance options to meet their needs. We look forward to continuing our work with Atheros to bring to market advanced WLAN solutions."

About Foundry Networks

Foundry Networks, Inc. is a leading provider of high-performance enterprise and service provider switching, routing and Web traffic management solutions including Layer 2/3 LAN switches, Layer 3 Backbone switches, Layer 4 - 7 Web switches, Wireless LAN and access points, and Metro Routers. Foundry's 6,800 customers include the world's premier ISPs, Metro service providers, and enterprises including e-commerce sites, universities, entertainment, health and wellness, government, financial, and manufacturing companies. For more information about the company and its products, call 1-888-TURBOLAN or visit www.foundrynetworks.com.

About Atheros Communications, Inc.

Atheros Communications is a leading developer of semiconductor system solutions for wireless communications products. Atheros combines its wireless systems expertise with high-performance radio frequency (RF), mixed signal and digital semiconductor design skills to provide highly integrated chipsets that are manufacturable on low-cost, standard complementary metal-oxide semiconductor (CMOS) processes. Atheros technology is being used by a broad base of leading customers, including personal computer and networking equipment manufacturers. For more information, visit www.atheros.com or send email to info@atheros.com.

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Atheros, the Atheros logo, Super G and Super AG® are trademarks of Atheros Communications, Inc. Foundry Networks, BigIron, ServerIron, TrafficWorks, IronWare and the "Iron" family of marks are trademarks of Foundry Networks, Inc. All other trademarks mentioned in this document are the sole property of their respective owners.

FORWARD-LOOKING STATEMENTS:

Except for the historical information contained herein, the matters set forth in this press release, including the features, performance and benefits of Atheros' products and technology and of Foundry's access points, and the companies working together to bring advanced WLAN solutions to market, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially, including, but not limited to, the continuing business relationship between the parties, the impact of competitive products and technological advances, manufacturing difficulties, difficulties in development of enhanced and new products, the companies' ability to market and ship in volume, and other risks detailed in Atheros' Prospectus dated February 11, 2004 as filed with the SEC and from time to time in Atheros' SEC filings. These forward-looking statements speak only as of the date hereof. Atheros disclaims any obligation to update these forward-looking statements.