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Juniper Networks Files Registration Statement with SEC

Sunnyvale, CA - July 14, 2003 - Juniper Networks, Inc. (NASDAQ: JNPR) today announced that on July 8, 2003 it filed a Registration Statement on Form S-3 with the Securities and Exchange Commission relating to the resale by selling security holders of its Zero Coupon Convertible Senior Notes due June 15, 2008 (the "Notes"), and the Common Stock issuable upon conversion of the Notes. The Company will not receive any proceeds from the resale of the Notes or the underlying Common Stock.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This notice does not constitute an offer to sell, or the solicitation of an offer to buy, securities. The notes and the shares of common stock of Juniper Networks issuable upon conversion of the notes have not been registered under the Securities Act of 1933, as amended, or the securities laws of any other jurisdiction and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.

About Juniper Networks, Inc.

Juniper Networks transforms the business of networking by converting a commodity - bandwidth - into a dependable, secure, and highly valuable corporate asset. Founded in 1996 to meet the stringent demands of service providers, Juniper Networks is now relied upon by the world's leading network operators, government agencies, research and education institutions, and information-intensive enterprises as the foundation for uncompromising networks. Juniper Networks is headquartered in Sunnyvale, California. Additional information can be found at www.juniper.net.

Juniper Networks is registered in the U.S. Patent and Trademark Office and in other countries as a trademark of Juniper Networks, Inc. Broadband Cable Processor, ERX, ESP, G1, G10, G-series, Internet Processor, JUNOS, JUNOScript, M5, M10, M20, M40, M40e, M160, M-series, NMC-RX, SDX, ServiceGuard, T320, T640, T-series, UMC, and Unison are trademarks of Juniper Networks, Inc. All other trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.