Patent ID: 9722916
Date: 2017-08-01
CPC Classifications: H04L

Claim:
1. A method, comprising: transmitting, by a source device in a network, a data packet from the source device to a destination device in the network over a primary pseudowire (PW), wherein the source device and the destination device are terminating provider edge (T-PE) devices; receiving, at the source device, the data packet returned with a loopback packet identifier in the data packet from the primary PW, in response to a downstream failure, wherein the loop packet identifier is added to the data packet by a device downstream of the source device that detected the downstream failure; in response to receiving the returned data packet with the loopback packet, retransmitting, by the source device, the data packet to the destination over a backup PW; receiving, at the source device, an indication that the primary PW is repaired; and in response, transmitting subsequent data packets over the primary PW.