Patent ID: 7778163

Claim:
A method of re-establishing a connection for a communication link, the communication link having a first portion in a first communication network, a second portion in a second communication network, and an interface connecting the first portion to the second portion, the first communication network having a first communication protocol and a first operation, administration, and maintenance (“OAM”) protocol adapted to monitor integrity of the first portion, the second communication network having a second communication protocol and a second OAM protocol adapted to monitor integrity of the second portion, the method comprising: utilizing the second OAM protocol to detect a failure relating to a label switched path (“LSP”) tunnel in the second portion by monitoring connectivity verification (“CV”) frames of the second OAM protocol being passed over the LSP tunnel; upon detection of the failure, identifying an alternate route for the second portion in the second communication network, the alternate route being able to complete the second portion of the communication link from the interface; and, for the communication link, at the interface replacing the second portion with the alternate route.