Patent ID: 8374077

Claim:
A system communicatively linked to a network comprising a plurality of link-coupled nodes at a non-terminal node located on a label switched path of a plurality of label switched paths in the network, the system comprising: an electronic processor configured to: select an optimized backup path for rerouting traffic around a failure located immediately downstream of the non-terminal node, wherein the failure is one of a plurality of possible failures on the plurality of label switched paths; reserve a backup bandwidth for each predetermined link of a plurality of predetermined links along the optimized backup path based on a signal including information regarding at least one of a link and a node immediately downstream of the non-terminal node on the label switched path, wherein each predetermined link is comprised in a respective plurality of backup paths, wherein the backup bandwidth is sufficient to reroute the traffic around a first single failure on one of the plurality of label switched paths, wherein the backup bandwidth is determined by a value corresponding to a bandwidth associated with a particular failure of the plurality of possible failures; delete the optimized backup path from memory for each respective node; update the value of the backup bandwidth; and adjust a bandwidth associated with the optimized backup path to a previously stored value of a bandwidth associated with a link on the optimized backup path.