Press Release

Redback Networks to Present at CIBC World Markets Communication & Technology Conference 

SAN JOSE, Calif., June 4, 2004 – Redback Networks Inc. (NASDAQ: RBAK), a leading provider of next-generation broadband networking systems, today announced that Thomas L. Cronan III, senior vice president of finance and administration and chief financial officer, will be presenting at the CIBC World Markets Communications and Technology Food Chain Conference in New York on Monday, June 7, 2004 at 8:00 a.m. Eastern Time. A live audio webcast and replay of the presentation will be available at: http://www.veracast.com/webcasts/cibcwm/communications04/82101125.cfm

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 profitably 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 systems and edge routing 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.

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REDBACK and SmartEdge are trademarks registered at the U.S. Patent and Trademark Office and in other countries. NetOp is a trademark 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.