Methods for distributed shared mesh restoration for optical networks
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United States of America Patent
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N/A
Issued Date -
May 22, 2003
app pub date -
Oct 23, 2001
filing date -
Oct 23, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for shared distributed mesh optical network restoration includes defining a set of attributes for the links, which further includes globally disseminated and locally kept attributes. The method further includes finding a SRLG-disjoint diversely routed paths, including allocating resources by updating attributes along the links on the backup path. The fault recovery process is started by first detecting and propagating the fault to the tail end of the faulty path, starting from tail end node, for each node along the faulty path. Recovery information is then passed to an egress port. An OXC is configured, updating reserved resource by modifying the attributes for each involved link. Further fault information is disseminated to the network.
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