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Juniper Networks Acquires Acorn Packet Solutions

Enhances Secure and Assured Networking Solutions to Drive Cost-effective IP Migration for the Federal Market

SUNNYVALE, CA - October 25, 2005 - Juniper Networks, Inc. (Nasdaq: JNPR) today announced it has acquired Acorn Packet Solutions, Inc. in a cash transaction valued at up to approximately $8.7 million. Acorn Packet Solutions develops products and technologies that natively connect legacy Time Division Multiplexing (TDM) and other circuit-based applications across next-generation IP networks.

Initially targeted at the U.S. Federal market, these solutions enable customers to protect their investments in legacy network technology, such as TDM and serial encryption, while providing a smooth migration path to more flexible and cost-effective IP networks. With this acquisition Juniper is enhancing its solutions for Federal customers as it continues to advance its strategy to secure and assure the delivery and performance of applications over an IP network through best-in-class traffic processing.

"Juniper Networks is focused on delivering secure and assured networking solutions that enable organizations worldwide to capitalize on the cost and scaling benefits of IP. Helping customers transition to converged IP networks supporting a range of services including data, voice and video, while protecting their investments in legacy technologies, is a key part of that. With Acorn Packet Solutions, Juniper gains best-in-class technology and deep expertise to help customers effect this transition smoothly and cost-effectively," commented Carol Mills, executive vice president and general manager, Infrastructure Products Group, Juniper Networks.

"Acorn has done an excellent job of differentiating itself in the Federal market as a leader in circuit to IP migration. With this acquisition, Juniper is demonstrating its continued commitment to supporting the Federal government in re-architecting its mission critical networks," commented Thomas Kreidler, vice president, Federal Systems, Juniper Networks.

Founded in 2002 and headquartered in Frederick, MD., Acorn Packet Solutions is committed to the development of products that deliver the benefit of "Everything over IP". Principally focused on the Federal market, these products allow organizations to migrate dedicated and leased circuits onto a shared IP architecture. These solutions support a range of applications including IP voice and data, as well as wireless data and backhaul solutions, and are deployed with U.S Federal government customers.

Acorn's technology includes an advanced clocking 'toolkit' that enables organizations to choose the appropriate method for the end-to-end timing of these critical circuits across an IP network. Circuit types are software configurable and operate at rates from 75bps to 12.288 Mbps.

Revenue for Acorn Packet Solutions was less than $1M in fiscal 2004 and the impact of this acquisition is expected to be neutral to Juniper earnings per share in the fourth quarter of 2005. The acquisition closed on October 20, 2005.

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.

Statements in this release concerning Juniper Networks' business outlook, future financial and operating results, and overall future prospects, including but not limited to, the possible effect of the acquisition on Juniper Networks' future earnings, are forward looking statements that involve a number of uncertainties and risks. Actual results could differ materially from those anticipated in those forward-looking statements as a result of certain factors, including: general economic conditions globally or regionally; business and economic conditions in the networking industry; changes in overall technology spending; the network capacity requirements of communication service providers; increases in competition; the timing of orders and their fulfillment; availability and cost of key parts and supplies; ability to establish and maintain relationships with distributors and resellers; variations in the expected mix of products sold; changes in customer mix; customer and industry analyst perceptions of Juniper Networks and its technology, products and future prospects; delays in scheduled product availability; market acceptance of our products and services; rapid technological and market change; adoption of regulations or standards affecting our products, services or industry; the ability to successfully integrate and manage Acorn Packet Solutions' businesses and technologies; product defects, returns or vulnerabilities; the ability to recruit and retain key personnel; currency fluctuations; litigation; and other factors listed in our most recent report on Form 10-Q filed with the Securities and Exchange Commission. All statements made in this press release are made only as of the date set forth at the beginning of this release. Juniper Networks undertakes no obligation to update the information in this release in the event facts or circumstances subsequently change after the date of this press release.