MIT Lincoln Laboratory and Naval Research Laboratory Partner with Ciena to Upgrade BoSSNET to 40G DWDM

BoSSNET users to benefit from Ciena’s seamless, in-service capacity migration with path to 100G all-optical network for on-demand bandwidth

Linthicum, MD – 11/27/2006 - Ciena® Corporation, the network specialist, today announced it is partnering with MIT Lincoln Laboratory and the Naval Research Laboratory (NRL) to upgrade the Boston South Network (BoSSNET) - an applications and network test bed for researching high bandwidth (10s of Gbps per wavelength), long reach (approx. 1,000 km) all-optical transmissions - using the Company’s standards-based, all-optical DWDM technology.

Designed and managed by MIT Lincoln Laboratory in its role as a Federally Funded Research and Development Center for the U.S. Department of Defense, BoSSNET is the research network for the Lab’s Advanced Networks Group, which architects, designs and builds prototypes of next-generation optical, wireless and satellite communication networks to address critical problems of national security, while also transferring those technical advances to commercial applications.

BoSSNET spans from Boston to Washington, D.C., with local metro area connections to Lincoln Lab, New York and the D.C. area. Qwest Communications International Inc. has been a partner with this leading-edge network since 1998, and provides fiber, facilities, and operations support.

BoSSNET will be upgraded with Ciena’s CoreStream® Agility Optical Transport System, which is capable of routing wavelength services up to speeds of 40 Gbps for long-haul and ultra long-haul network routes. The standards-based, all-optical DWDM platform simplifies networks by eliminating costly optical-electrical-optical (OEO) signal conversions and transceivers, and lowers ongoing operational costs by automating end-to-end service provisioning and management, inventory and resource tracking, and dynamic power management. BoSSNET will also leverage CoreStream’s software-defined ROADM technology to enable automated wavelength activation and reconfiguration in capacity increments of 10G and 40G today, with a clear migration path to 100G. CoreStream is also the core optical transport and switching foundation of the Department of Defense’s GIG-BE network, ensuring full compatibility for BoSSNET.

“Higher line side bit rates with fewer lambdas to manage not only lowers operational expenditures, but provides a path to 100G,” said Eve Griliches, research manager at IDC. “Systems that cost-effectively deliver 40G today with a future-proof vision are well suited for the advanced networking needs of R&E environments.”

A key partner in the BoSSNET upgrade is NRL, the corporate laboratory for the Navy and Marine Corps, which conducts a broad program of scientific research and advanced technology development. NRL is also a Principal Federal Agency Member of the Advanced Technology Demonstration Network (ATDnet), a high-performance networking test bed in the Washington D.C. area.

“BoSSnet and ATDnet are unique all-optical assets where researchers can deploy next-generation technologies that enable dynamic peer-to-peer resource sharing between typical and high-end users,” stated Dr. Henry Dardy, DoD/Navy Senior Technologist. “The networks provide researchers the capability to test low-latency, high-bandwidth streaming of data at 40G and 100G, providing the next steps toward the DoD’s goal of scaling to terabit streams riding on a wavelength as technology progresses in future years.”

BoSSNET plans include an initial upgrade of the network to 40G in early 2007, followed by an aggressive deployment schedule to the rest of the network. Once the network is fully upgraded, MIT Lincoln Laboratory, NRL and Ciena will begin planning the migration to 100G.

“As Ethernet increasingly becomes the foundation for high-capacity networks, a highly-resilient core optical network scalable to beyond 100Gb/s per channel will be critical to accommodate the growth in bandwidth-intensive applications carried across BoSSNET and other advanced networks,” said Steve Alexander, chief technology officer for Ciena. “To maximize BoSSNET’s capacity and operational efficiency, CoreStream delivers an open standards line system with 40G capabilities and a path to 100G, allowing operators to increase capacity without forklift upgrades of proprietary technology, additional network elements or costly optical-to-electronic conversions.”

ABOUT CIENA

Ciena Corporation is the network specialist, focused on expanding the possibilities for its customers’ networks while reducing their cost of ownership. The company’s systems, software and services target and cure specific network pain points so that telcos, cable operators, governments and enterprises can best exploit the new applications that are driving their businesses forward.

About MIT Lincoln Laboratory

MIT Lincoln Laboratory has pioneered in advanced electronics since its origin in 1951 as a Federally Funded Research and Development Center of the Massachusetts Institute of Technology. The Laboratory’s fundamental mission is to apply science and advanced technology to critical problems of national security. The scope of the problems has broadened from the initial emphasis on air defense to include communications, space surveillance, missile defense, tactical surveillance systems, air traffic control as well as air defense. Throughout its history, the Laboratory has had an extensive program in advanced electronics technology which has led to major advances across the breadth of its programs. http://www.ll.mit.edu/

About U.S. Naval Research Laboratory (NRL)

NRL is the corporate research laboratory for the Navy and Marine Corps and conducts a broad program of scientific research, technology and advanced development. NRL has served the Navy and the nation for over 80 years and continues to meet the complex technological challenges of today’s world. http://www.nrl.navy.mil/

NOTE TO INVESTORS

This press release contains certain forward-looking statements based on current expectations, forecasts and assumptions that involve risks and uncertainties. These statements are based on information available to the Company as of the date hereof; and Ciena’s actual results could differ materially from those stated or implied, due to risks and uncertainties associated with its business, which include the risk factors disclosed in its Report on Form 10-Q, which Ciena filed with the Securities and Exchange Commission on August 31, 2006. Forward-looking statements include statements regarding Ciena’s expectations, beliefs, intentions or strategies regarding the future and can be identified by forward-looking words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “should,” “will,” and “would” or similar words. Ciena assumes no obligation to update the information included in this press release, whether as a result of new information, future events or otherwise.

Contact Information

Nicole Anderson

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Ciena Corporation

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