Patent ID: 9160652
Filing Date: 2015-10-13
Classification: H04L

Abstract:
1. A method comprising: receiving at least one resource reservation state message in a forward direction at a first node of a label switched path from a forward bypass tunnel in a forward direction; extracting, at the first node, a tunnel sender address of a downstream point of local repair from the at least one resource reservation state message, wherein the first node is upstream of the downstream point of local repair in the direction of the at least one resource reservation state message; identifying, based on the tunnel sender address, a reverse bypass tunnel from the first node to the downstream point of local repair in a reverse direction of the label switched path; and signaling resource reservation messages over the reverse bypass tunnel in the reverse direction to the downstream point of local repair; determining, when the reverse bypass tunnel has been provisioned, whether primary label switched path traffic has been routed over the reverse bypass tunnel; and when primary label switched path traffic has not been routed over the reverse bypass tunnel, directing traffic and signaling over the reverse bypass tunnel in the reverse direction.