Leading Service Provider PSINet Selects Extreme Networks

Extreme Networks' Switching Solutions Will Support PSINetInternationally SANTA CLARA, Calif. (PROTEXT) - Extreme Networks, Inc.(Nasdaq: EXTR), a leader in providing networking solutions forthe new enterprise and service providers, today announced thatPSINet Inc. (Nasdaq: PSIX), the largest independent commercialInternet Service Provider, has selected its switching systems asa component of its Global Hosting Center architecture. ExtremeNetworks' market-leading Layer 3 networking solutions will serveas the switching infrastructure for PSINet's hosting centers, andwill support PSINet customers internationally. Extreme Networks' switching solutions were selected by PSINetbased on their ability to offer high density wire-speed serverswitching solutions, provide a simplified learning curve, reducecosts, and ensure high network reliability through redundancy andhot-swap capabilities in the network core and edge. ExtremeNetworks' onsite international support for the Global HostingCenters and its strategy for an easy migration to next generationmodules, allowing for futureproofing, were also major decisionfactors for PSINet. "Our network was specifically designed to accommodate IP-basedbusiness applications such as Internet telephony, electroniccommerce and multimedia," said Michael Mael, vice president forPSINet Inc. "To deliver our high-quality network, we work withmultiple vendors to certify best-in-class products. Theseservices must meet our criteria and our customers' high standardsfor quality, performance, and security. Extreme Networks providesimportant components that are a key element of our Global HostingCenters providing reliable, high performance networkingcapabilities." In each of the initial PSINet Global Hosting Centers, ExtremeNetworks switches will distribute two gigabits of data streamingin from the high-speed backbone to an average of 8,500 Internetserver connections. To support the high performance requirements of PSINet'snetwork, Extreme Networks and PSINet have designed a fullyredundant, mesh network, which relies on up to 30 ExtremeNetworks BlackDiamondO modular switching systems. This primarynetwork is in-turn supported by two back-up networks, eachconsisting of an equal number of BlackDiamond switches. The IP-based communications services PSINet offers demonstratehow Web- based computing is redefining how business is nowconducted. Businesses rely on companies like PSINet to providethem with the tools, such as web hosting, e-Commerce andcorporate Internet and Intranet web sites, to compete in the newInternet-based economy. "PSINet's vision for broadband networks and Extreme Networks'ability to distribute that bandwidth throughout the networkensures that this new IP-based environment functions," saidGordon Stitt, CEO and president of Extreme Networks. "Our uniqueability to deliver simple, scalable networks that can easilyprioritize traffic and allocate bandwidth enables us to build thenetworks for this new breed of Internet communicationscompanies." High performance solutions for service providers To meet the demands of service providers, Extreme Networksoffers high bandwidth scaled switching solutions designed toadapt swiftly to the many changes thrust upon the network. Inaddition, the Extreme Networks award-winning switching solutionsare unique in meeting the key requirements that service providersneed to build Web-based computing networks: simplicity,scalability and the option to easily manage and prioritize newlevels of traffic generated by current and future applications. All Extreme Networks switches are built on a commonarchitecture. This unique approach enables the company to offeran elegantly simple, yet high-performance network architecturethat requires less maintenance and operating costs. By combiningEthernet and IP with wire-speed Layer 3 Switching, ExtremeNetworks provides the scalability corporations need to buildnetworks that can handle future growth. And, the company's newEnterprise Policy System allows users to deploy policy networkingto protect network bandwidth for mission critical applicationsand give precedence to revenue generating traffic, withoutcomplexity. About PSINet Headquartered in Herndon, VA, PSINet is a global Internet datacommunications carrier focused on the business marketplace.PSINet offers a broad set of high-speed corporate LANconnectivity services supporting managed security and guaranteedInternet, intranet, electronic commerce, Web hosting services,and services for other carriers and ISPs. PSINet operates aninternational technologically advanced frame relay and ATM-based,IP-optimized network consisting of more than 535 POPs around theworld serving more than 60,000 businesses in primary markets inArgentina, Belgium, Brazil, Canada, France, Germany, Hong Kong,Italy, Japan, Mexico, the Netherlands, the Republic of Korea,Switzerland, the United States, and the United Kingdom. PSINetinformation can be obtained by e-mail at info@psi.com, byaccessing the Web site at http://www.psinet.com or by callingtoll free 800-799-0675. About Extreme Networks Extreme Networks designs, manufactures and sells high-performance LAN solutions that adapt swiftly to change and enablefuture applications for the new enterprise and service providers.The company's award-winning family of SummitO stackable andBlackDiamond modular switching systems increase the flow ofinformation and allow for future network growth. ExtremeNetworks' switching solutions are available through itsauthorized resellers worldwide. Extreme Networks' corporate headquarters are at 3585 MonroeStreet, Santa Clara, Calif., 95051, 408-579-2800 or 888-257-3000;www.extremenetworks.com. This press release may contain certainforward-looking statements that involve risks and uncertainties.Factors that could cause or contribute to such risks anduncertainties include those discussed in Extreme's Securities andExchange Commission Filings. NOTE: Extreme Networks, Summit and BlackDiamond are trademarksof Extreme Networks. ots Original Text Service: ExtremeNetworks, Inc. Internet: http://www.newsaktuell.de Contact:Valerie Bellofatto of Extreme Networks Public Relations, 408-579-2963, or vbellofatto@extremenetworks.com; or Michael P. Binko ofPSINet Corporate Marketing, 703-904-4285, or binkom@psi.com Website: http://www.extremenetworks.com

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