Xilinx Press Release #02116
FOR IMMEDIATE RELEASE 

XILINX AND ALLEGRO NETWORKS COLLABORATE ON NEW MULTI-ROUTER EDGE NETWORK TECHNOLOGY
Xilinx Virtex Platform FPGAs play significant role in development
of world's first multi routing device

SANTA CLARA, Calif., July 25, 2002 - at the Metro Optical Networking Forum today, Xilinx, Inc. (NASDAQ:XLNX) announced that Allegro Networks, an innovative new edge networking supplier, utilized Xilinx® Virtex-II™ Platform FPGAs in the development of the industry's first multi-router. Allegro's multi-router is a new class of internetworking device that supports the concurrent operation and processing of multiple logically and physically independent routers within a single system. In addition to its own internally-developed ASICs, Allegro Networks selected Xilinx programmable chips to maximize flexibility and time-to-market benefits. Allegro Networks is among a growing number of companies using Xilinx FPGAs to gain a competitive advantage.

"We're building a system that has heretofore never been developed and set out on an aggressive schedule," said Dave Roth, engineering director at Allegro Networks. "We were confident in Xilinx's ability to meet their product road map commitments. As a result of our collaboration, we knew when selecting a certain device, a follow-on device would be there for future product development or enhancements."

In a break from conventional router technology, Allegro Networks' multi-router system provides numerous physical routers and associated route processors within a single system. This allows carriers to lower capital and operational costs at the edge of their network, optimize router provisioning and service delivery times and generate new sources of recurring service revenue. The multi-router utilizes Xilinx Virtex-II FPGAs throughout the system.

"We're seeing an increasing number of innovators such as Allegro Networks using FPGAs to maximize flexibility and reduce time to market. In the face of the current economic downturn, manufacturers are realizing that the high NRE cost and large development team sizes associated with other approaches are extremely prohibitive," said Robert Bielby, senior director of Strategic Solutions at Xilinx.

About Xilinx Virtex Series FPGAs
The Virtex Series FPGA family delivers the highest performance and highest density of any programmable logic solution available. The innovative Virtex-II IP-Immersion architecture enables integration of both hard and soft intellectual property (IP), enhanced system memory, and lightning-fast DSP performance, providing the best platform for advanced digital designs in the industry. With densities ranging from 40,000 to 8 million-system gates, Virtex series solutions are empowered by advanced design tools that reduce development time through fast design, powerful synthesis, smart implementation algorithms, and efficient verification capabilities.

Xilinx Online Resource for Metro Area Network Design
Xilinx eSP (www.xilinx.com/esp) is a proven resource for engineers, with four million visits since its introduction early last year. The latest segment on the eSP Web portal is dedicated to accelerating the development of metro area and edge access networking products. The site is a comprehensive resource, delivering a powerful array of solutions and information in a single location.

About Allegro Networks
Allegro Networks is a privately-held data communications equipment startup that manufactures and markets high-performance broadband internetworking products to carriers. Headquartered in San Jose, California, the Company was founded in January of 2000 and is credited with the innovation of the multi-router. Allegro Networks multi-router products are targeted at facilities-based carriers, such as incumbent local exchange carriers (ILECs) or interexchange carriers (IXCs) enabling them to optimize the edge of their networks as well as begin selling routing as a service. To date, the Company has secured over $80 million dollars in venture capital financing from Bessemer Venture Partners, Columbia Capital, Infinity Capital, Rustic Canyon Group, Thomas Weisel Venture Partners and WK Technology Fund. Employing a staff of approximately 100 around the world, Allegro Networks is led by Dave House, president, CEO and chairman of the board of directors.

About Xilinx
Xilinx is the worldwide leader of programmable logic solutions. Additional information about Xilinx can be found at http://www.xilinx.com.