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Corvis and Juniper Networks to Provide Carriers with Faster, Higher Capacity Network Capabilities

Companies Announce Successful OC-192c Interoperability Testing Between Optical and IP Layers

Columbia, MD - November 6, 2000 - Corvis Corporation (Nasdaq: CORV), a leader in delivering intelligent all-optical networking solutions, and Juniper Networks, Inc., (Nasdaq: JNPR), a leading provider of next-generation IP infrastructure systems, today announced the successful completion of interoperability testing between 10 Gbps (OC-192c) all-optical and IP networking layers. The successful testing marks a significant milestone in delivering higher speed and greater capacity network capabilities to carriers.

"The only way carriers can keep up with the tremendous growth of traffic is the combination of IP and optical networking," said Tom Gray, President, Network Services for FLAG Telecom. "The interoperability of OC-192c equipment demonstrated by Corvis and Juniper, two of the industry's pioneering companies, provides a roadmap of how to grow capacity while enabling new broadband services and applications."

The interoperability test included the successful transmission of 10 Gbps between Corvis' ultra long reach, all-optical transport system and Juniper Networks M160 Internet backbone router. As part of the test, the M160 router routed OC-192c data to Corvis' transport equipment, which, in turn, transmitted the data over an all-optical, 3,200 km mixed fiber type link with zero packet loss.

"Our customers require simple, highly scalable IP network solutions that deliver wirespeed 10 Gbps services across their optical backbones. Full interoperability between IP routers and DWDM equipment is essential for successful data transfer across these infrastructures," said Carl Showalter, Vice President of Marketing for Juniper Networks.

"Multi-terabit IP networks are experiencing exponential traffic growth rates," said Dr. David Huber, President and CEO of Corvis. "This integrated solution for transmitting high bandwidth services up to OC-192c capacity allows Corvis and Juniper to offer service providers a more efficient way to scale their networks."

The Juniper Networks M160 Internet backbone router is the first router to support 10-Gbps OC-192c/STM-64 circuits, greatly simplifying capacity planning and administration of rapidly growing networks. The Corvis system is the first to provide OC-192c long haul and ultra-long haul capability, as well as the first to provide 2.4 Terabit capacity, all-optical switching and integrated network management solutions required to deliver a broad range of services across an all-optical network and efficiently interconnect OC-192c Internet backbone routers.

About Corvis

Corvis Corporation is a provider of all-optical networks founded by Dr. David Huber, a pioneer in the field of optical communications. The company is revolutionizing the way communications traffic is moved in the new Internet-driven economy by deploying the industry's first all-optical network providing integrated all-optical switching, ultra-long distance transport and network management. Corvis products and services deliver all-optical network intelligence and mesh network capability. This allows communication service providers to realize a significant gain in network capacity using existing fiber in the field and improve their competitiveness by delivering new and existing services and applications more rapidly, while significantly reducing the overall capital and operational cost of building and maintaining their network. For more information, call Corvis at 443-259-4000 or visit the Corvis Web site at www.corvis.com. Corvis and the Corvis logo are trademarks and/or service marks of the Corvis Corporation.

About FLAG Telecom

FLAG Telecom is a leading independent global carriers' carrier providing an innovative range of products and services to the international carrier community, Application Service Providers (ASPs) and Internet Service Providers (ISPs) across a global network platform optimized to support the next generation of IP over optical data networks.

About Juniper Networks, Inc.

Juniper Networks, Inc. is a leading provider of purpose-built systems that meet the scalability, performance, density, and compatibility requirements of rapidly evolving, optically enabled IP networks. The company's systems provide new IP infrastructure solutions for the world's leading service providers. Juniper Networks service and manufacturing teams and IP engineers work closely with customers to build and support customer networks. The company is headquartered in Sunnyvale, California. For more information, please contact the company at 408-745-2000 or visit our Web site at https://www.juniper.net.

Juniper Networks is a registered trademark of Juniper Networks, Inc. M160 is a trademark of Juniper Networks. All other trademarks, service marks, registered trademarks, or registered service marks may be the property of their respective owners.