Method for restoring a virtual path in an optical network using 1+1 protection
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United States of America Patent
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Apr 3, 2007
Issued Date -
N/A
app pub date -
May 16, 2001
filing date -
Jan 15, 1999
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Abstract
A method for restoring a virtual path, provisioned between a source and a target node, in a zoned mesh optical network is described. The method, in one embodiment, allocates a primary and a secondary physical path to the virtual path. The two physical paths are network element and link disjoint. In case of a failure in one physical path, the end nodes switch the virtual path to the other physical path.
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