A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption...http://www.google.com/patents/US7301895?utm_source=gb-gplus-sharePatent US7301895 - Virtual path restoration scheme using fast dynamic mesh restoration in an optical network
