Patent ID: 10075367

Abstract:
A method and apparatus is provided for establishing a repair path between a source node (101) and a destination node (105) in a communication network configured to operate a remote Loop-Free Alternate, LFA, procedure. The method comprises the steps of: prior to detecting a link failure or switchover event associated with a protected link, within a current path between the source node (101) and the destination node (105), performing the steps of: pre-configuring a Point of Local Repair, PLR, node (106) for the protected link (step 301); and pre-configuring a repair tunnel endpoint node (102) for the PLR node (step 303). In response to detecting a link failure or switchover event associated with the protected link, the method comprises the steps of establishing a repair path between the source node and the destination node (step 305), wherein the repair path is routed via the repair routed via the repair tunnel endpoint node (102), and wherein the route of the repair wherein the route of the repair path excludes the PLR node (106) and the protected link.