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Juniper Networks Demonstrates GMPLS Breakthrough with NTT Communications

T640 Core Router Achieves 40 Gigabit-Per-Second Speed Between Japanese Points of Presence

SUNNYVALE, Calif., June 12, 2006 - Juniper Networks, Inc. (NASDAQ: JNPR) together with NTT Communications, one of Japan's leading service providers, today announced that the Juniper Networks T640 core router successfully demonstrated Generalized Multiprotocol Label Switching (GMPLS) signaling to dynamically establish a OC-768/STM-256 Layer 1 network path between NTT Communications' Makuhari and Othemachi Points of Presence (PoPs). The demonstration was held at ShowNet during Interop Tokyo 2006, June 7 to 9 at the Makuhari Messe in Chiba, Japan.

GMPLS extends the efficient label switching mechanism of MPLS to the physical network layer, providing a control plane that allows networks to take advantage of an advanced infrastructure, including high-speed links such as OC768c, which is fastest optical link available today. Using GMPLS, routers can intelligently signal the optical layer, enabling providers to establish, change or tear down optical links in real time.

The Juniper Networks T640 platform was the only router in the trial that could perform the high speed connection via a logical router exchanging the IPv4 and IPv6 traffic with a master physical router controlling a Layer 1 path with GMPLS signaling. This technical combination provides an optimum balance between extremely high performance and fail-safe reliability.

"Our T-series router is again surpassing legacy constraints to deliver the high capacity today that will be required in the future," said Masanori Osuga, vice president of Japan for Juniper Networks. "When advanced IP services have fully matured in the market, service providers will need significantly higher levels of capacity to accommodate the enormous demand from enterprises and consumers, and we've proven again that Juniper is well positioned to support our customers' next-generation networks."

About NTT Communications

NTT Communications is a subsidiary of Nippon Telegraph and Telephone (NTT) Corporation (NYSE: NTT) - one of the world's largest telecommunications companies. NTT Com provides high-quality, technologically advanced network management, security and solution services to consumers, corporations and governments on a global basis, with a special focus on the Asia-Pacific region. Its world-class backbone network, combined with the networks of partner companies around the world, offers access to more than 200 countries. NTT Com Group has more than 30 companies in the Asia-Pacific region, Europe and the Americas. The company has garnered several awards for its leading edge technologies, outstanding performance and customer service, including "World Communication Awards Best Customer Care - 2005." For more information, please visit www.ntt.com.

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.