Press Release

Redback Networks Names John Spiliotis as Vice President of Americas Industry veteran joins to manage expansion and accelerating revenue growth 

SAN JOSE, Calif., June 20, 2005 – Redback Networks Inc. (NASDAQ: RBAK), a leading provider of next-generation broadband networking systems, today announced the appointment of John Spiliotis to the position of vice president of sales and operations for the Americas.

“In my more than 20 years in sales I have rarely seen a sales executive with such strong strategic and leadership abilities. I believe John can drive our field organization and revenues to the next level of performance,” said Kevin DeNuccio, president and chief executive officer, Redback Networks.

Spiliotis brings over 20 years of industry experience to Redback networks with a solid track record of building strong teams and achieving excellent results. He joins Redback most recently from Extreme Networks where he was the vice president for North America. Prior to Extreme, from 1997 to 2001, he was at Cisco Systems where he held various management positions including that of vice president of Service Provider Channels and vice president of ILEC sales. He started his sales career at IBM and Amdahl. Spiliotis holds a BA degree from the Citadel and an MBA from Hofstra University.

In accordance with NASDAQ Marketplace Rule 4350, Redback granted inducement stock options for Spiliotis. The options are classified as non-qualified stock options with an exercise price equal to fair market value on the date of grant and have a ten-year term. Spiliotis' grant is for 150,000 shares and provides for 25 percent vesting of his shares upon completion of one year of service, with the balance vesting in monthly installments over 36 months, and a 12 month acceleration of vesting if the company experiences a change of control.

About Redback Networks
Redback Networks Inc., a leading provider of next-generation broadband networking equipment, enables carriers and service providers to build third-generation Smart Broadband Networks that can deliver simplified, personalized, portable subscriber services to consumers and businesses. The company's carrier-class, consumer-scale SmartEdge® Router and Service Gateway platforms for Consumer IP combine subscriber management, edge routing and metro ethernet aggregation functions and, in conjunction with the NetOp™ Element and Policy Manager platform, provide a powerful, flexible infrastructure for managing both subscribers and value-added services.

Founded in 1996 and headquartered in San Jose, Calif., with sales and technical support centers located worldwide, Redback Networks maintains a growing and global customer base of more than 500 carriers and service providers, including major local exchange carriers (LECs), inter-exchange carriers (IXCs), PTTs and service providers. For more information, visit Redback Networks at www.redback.com.

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REDBACK and SmartEdge are trademarks registered at the U.S. Patent and Trademark Office and in other countries. SMS and NetOp are trademarks of Redback Networks Inc. All other products or services mentioned are the trademark, service marks, registered trademarks or registered service marks of their respective owners.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

The statements contained in this press release that are not purely historical are forward-looking statements within the meaning of Section 21E of the Securities and Exchange Act of 1934, as amended, including statements regarding Redback Network’s expectations, beliefs, intentions or strategies regarding the future. All forward-looking statements included in this document are based upon information available to Redback Networks as of the date hereof, and Redback Networks assumes no obligation to update any such forward-looking statements. Forward-looking statements involve risks and uncertainties, which could cause actual results to differ materially from those projected. These risks and other risks relating to Redback Network’s business are set forth in the documents filed by Redback Networks with the Securities and Exchange Commission (SEC), specifically the most recent report on Form 10-K, Form 10-Q, Form 8-K, and amendments thereto, and the other reports filed from time to time with the SEC.