Patent ID: 8098576
Filing Date: 2012-01-17
Classification: H04L

Abstract:
1. A method for protecting multicast service comprising: splitting a multicast service into a plurality of unidirectional point-to-point services from a source node to a sink node, wherein a signaling message of each unidirectional point-to-point service is independent of one another; establishing, at the source node, which publishes the multicast service, one or more label switch paths for each of the plurality of unidirectional point-to-point services via each of the signaling messages, wherein each unidirectional point-to-point service corresponds to a primary label switch path and a backup label switch path, sending, by a failure detection node, a notification message when a failure occurs on the primary label switch path or on the backup label switch path, the notification message carrying at least one ID of one or more label switch paths that are affected by the failure; and establishing, by the source node, one of a recovered label switch path and a new backup label switch path in response to the notification message.