Patent ID: 8085676
Filing Date: 2011-12-27
Classification: H04L

Abstract:
1. A method for reducing delay in a fast protection switching network caused by the looping back of transmitted packets, the method comprising: detecting, by a source node and a destination node, occurrence of a loop back condition due to a failure on a primary path, the detecting of a loop back condition being based on receipt of an alarm indication signal (AIS) from a node that detects a failure on the primary path, the AIS indicating the occurrence of the failure on the primary path, the detection of occurrence of the loop back condition including comparing an SA MAC address of one of the source node and the destination node with an SA MAC address in a received packet; halting transmission of packets between the source node and the destination node on the primary path; and starting transmission of the packets between the source node and the destination node on a secondary path.