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Juniper Networks Maintains #2 Position in Worldwide Service Provider Edge Routing

Company Achieves 26.8 Percent Market Share According to Synergy Research Group

SUNNYVALE, Calif. - December 1, 2005 - Juniper Networks, Inc. (NASDAQ: JNPR) today announced that it has maintained its #2 position in the Service Provider Edge Routing category for more than 12 consecutive quarters with 26.8 percent market share for the quarter ended September 30, 2005 according to Synergy Research Group. The Service Provider Edge Routing category sub-segments include IP Edge Aggregation, Broadband Aggregation and IP Services.

"Maintaining an average of 23 percent total service provider edge routing market share for more than three years is a strong testament to Juniper's market proven routing technology. Juniper delivers the performance, reliability and scale that service providers require," said Ray Mota, chief research officer, Synergy Research Group. "It is no surprise that service providers continue to recognize Juniper as a premier routing vendor in both the core and the edge."

About Juniper Networks, Inc.

Juniper Networks is the leader in enabling secure and assured communications over a single IP network. The company's purpose-built, high performance IP platforms enable customers to support many different services and applications at scale. Service providers, enterprises, governments and research and education institutions worldwide rely on Juniper Networks to deliver products for building networks that are tailored to the specific needs of their users, services and applications. Juniper Networks' portfolio of proven networking and security solutions supports the complex scale, security and performance requirements of the world's most demanding networks. Additional information can be found at www.juniper.net.

Juniper Networks and the Juniper Networks logo are registered trademarks of Juniper Networks, Inc. in the United States and other countries. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.