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Juniper Networks Selected for AARNet Backbone Network

M-series Multi-Service Routing Platforms to Assure Performance and Reliability of Australian Research and Education Infrastructure

SUNNYVALE, July 6, 2005 - Juniper Networks, Inc. (NASDAQ: JNPR) today announced that AARNet Pty Ltd (APL) has selected its M-series routing platform for Australia's Academic and Research Network (AARNet). APL will deploy Juniper Networks M320, M40e and M20 routing platforms on its new AARNet3 network.

APL is the not-for-profit company that is building AARNet3, the third generation of Australia's Academic and Research Network, which will provide high capacity Internet services to Australia's universities, research institutions, education and other related organisations. AARNet serves more than 1,000,000 end users through member institutions and customers. In 2004 AARNet delivered almost 1 petabyte (1024 terabytes) of traffic, and APL expects traffic growth to continue to exceed 50 percent per year for several years.

"AARNet is building one of the world's most advanced and wide reaching networks for future generations," said Chris Hancock CEO of AARNet. "The exciting activities of astronomy, high energy physics and immersive multi-media test the boundaries of our network capacity. Astronomy alone is looking at terabytes nightly. The flow-on effects in network development will benefit communications networks around the world. These networks are now among society's most important infrastructures. They are vital to so many sectors of our economy."

The AARNet3 backbone network provides 10 gigabits per second from Perth to Brisbane, enabling customers to connect at gigabit speeds. Juniper Networks M-series will deliver the reliability, scalability and performance required to meet the current and future needs of research and education in Australia.

The M-series uses a high-performance architecture and JUNOS, a proven carrier class operating system, ensuring industry-leading reliability, stability and performance to support latency sensitive applications such as voice, video, and mission critical applications.

AARNet has a reputation of being at the forefront of network design and innovation and the Juniper Networks platforms will allow AARNet to continue to deliver existing and emerging advanced services to its clients.

Mark Prior, AARNet's CTO, said: "AARNet is especially impressed by Juniper's commitment to QA processes and we believe that Juniper's M-series will enable AARNet to continue to support the deployment of advanced IP services. In particular we need to concurrently support IPv6 and multicast traffic, as well as unicast IPv4 traffic, without any loss of performance. We are looking to an operating environment that enhances the robustness of the network and improves reliability and availability."

"All sophisticated organizations today depend on reliable communications infrastructure, and research and education institutions in particular must support experimental and leading-edge network applications and rich IP-based media communications," said Shaun Page, vice president of Australia and New Zealand for Juniper Networks. "By selecting the Juniper Networks M-series, APL is ensuring the performance and reliability of AARNet to support these next generation applications."

About AARNet (www.aarnet.edu.au)

AARNet Pty Ltd (APL) is the company that operates Australia's Academic and Research and Network (AARNet). APL is a not-for-profit company whose shareholders are 37 Australian universities and the CSIRO. APL is a licensed Australian carrier (No 61 under the Australian Telecommunications Act 1997).

AARNet is recognized internationally as Australia's National Research and Education Network and is represented on the International Committee of the Board of Internet2, the Coordinating Committee for Intercontinental Research Networking, the International Task Force on Advanced Networks, and the Asia Pacific Advanced Network Backbone Committee. It is engaged with the European Commission on research networking and the support for e-science.

APL is working closely with the Australian Department of Education, Science and Training (DEST - www.dest.gov.au) to facilitate the deployment of the Commonwealth Government's Australian Research and Education Network (AREN) initiative.

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.

The following are trademarks of Juniper Networks, Inc.: M-series, M320, M40e and M20