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Juniper Networks Names Robyn Denholm Chief Financial Officer

SUNNYVALE, Calif., August 14, 2007 - Juniper Networks, Inc. (NASDAQ: JNPR), the leader in high-performance networking, today announced the appointment of Robyn M. Denholm to the position of chief financial officer. Ms. Denholm joins Juniper Networks from Sun Microsystems where she served as senior vice president, Corporate Strategic Planning.

"I am delighted to welcome Robyn to the Juniper executive management team," said Scott Kriens, Juniper Networks' chairman and CEO. "Drawing from nearly 25 years of hands-on financial experience with recognized leaders, I know that Robyn will be a valuable contributor in assessing the financial implications of all major business decisions and providing strategic input toward shaping Juniper's global business objectives and future success."

Ms. Denholm will lead Juniper Networks' worldwide finance and accounting organization. In addition, she will lead the company's legal, investor relations and global facilities organizations.

"With a reputation for delivering disruptive innovation, Juniper is in a great position to address the critical networking requirements of today's high-performance network-centric businesses," said Ms. Denholm. "I am really excited to be joining Juniper, and I look forward to working with the Juniper team to solidify the company's position as the preferred choice for high-performance networking."

Ms. Denholm, 43, joins Juniper Networks from Sun Microsystems where she served as senior vice president, Corporate Strategic Planning. In that role, she was responsible for Sun's corporate operating system, the global sales and service administration function and she served as the leader of the Sun's business transformation initiative. Ms. Denholm joined Sun in 1996 and served in executive assignments that included senior vice president, Finance; vice president and corporate controller (Chief Accounting Officer); vice president, Finance; service division, director, Shared Financial Services APAC and Controller, Australia/New Zealand. Prior to joining Sun, Ms. Denholm served at Toyota Motor Corporation Australia for seven years and at Arthur Andersen and Company for five years, in various finance assignments. Ms. Denholm is a Fellow of the Institute of Chartered Accountants of Australia and holds a Bachelors Degree in Economics from the University of Sydney and a Masters of Commerce from the University of New South Wales.

About Juniper Networks

Juniper Networks, Inc. is the leader in high-performance networking. Juniper offers a high-performance network infrastructure that creates a responsive and trusted environment for accelerating the deployment of services and applications over a single network. This fuels high-performance businesses. Additional information can be found at www.juniper.net.

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