Ciena In Negotiations to Purchase Optical and Carrier Ethernet Assets of Nortel`s Metro Ethernet Networks Business

LINTHICUM, Md.--(Business Wire)--
Ciena Corporation (NASDAQ: CIEN), the network specialist, today confirmed that
it is in advanced discussions to acquire substantially all of the optical
networking and carrier Ethernet assets of Nortel`s Metro Ethernet Networks (MEN)
business. The outcome of these discussions is uncertain and subject to
negotiation of definitive agreements. Any agreements would be subject to a
competitive bidding process under the United States Bankruptcy Code and the
Canadian Companies' Creditors Arrangement Act.

About Ciena

Ciena specializes in practical network transition. We offer leading network
infrastructure solutions, intelligent software and a comprehensive services
practice to help our customers use their networks to fundamentally change the
way they compete. With a global presence, Ciena leverages its heritage of
practical innovation to deliver maximum performance and economic value in
communications networks worldwide. We routinely post recent news, financial
results and other important announcements and information about Ciena on our
website. For more information, visit www.ciena.com.

Note to Investors

Forward-looking statements. This press release contains certain forward-looking
statements based on current expectations, forecasts and assumptions that involve
risks and uncertainties. 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. These statements are based on information available to Ciena as
of the date hereof and actual results could differ materially from those stated
or implied. These statements are subject to risks and uncertainties associated
with Ciena`s business, which include the risk factors disclosed in Ciena`s Form
10-Q filed with the SEC on September 3, 2009. Risks relating to the proposed
transaction include, but are not limited to, there can be no assurance that
definitive purchase agreements can be reached. Ciena assumes no obligation to
update the information included in this press release, whether as a result of
new information, future events or otherwise.

Ciena Corporation
Press Contact:
Nicole Anderson
Ciena Corporation
(410) 694-5786
pr@ciena.com
or
Investor Contact:
Suzanne DuLong
Ciena Corporation
(888) 243-6223
ir@ciena.com

Copyright Business Wire 2009