DATA-PLANE DRIVEN FAST PROTECTION MECHANISM FOR MPLS PSEUDOWIRE SERVICES

摘要

In one embodiment, a source transmits one or more data packets to a destination over a primary pseudowire (PW). When a device on the primary PW detects a downstream failure of the primary PW, and in response to receiving one or more data packets from a source from the failed primary PW, the device adds a loopback packet identifier to the one or more received data packets, and returns the one or more data packets with the loopback packet identifier to the source upstream on the primary PW. Accordingly, in response to receiving the data packet returned with a loopback packet identifier from the primary PW (in response to the downstream failure), the source retransmits the one or more data packets to the destination over a backup PW.

主权项

1. A method, comprising:
transmitting a data packet from a source to a destination over a primary pseudowire (PW); receiving the data packet returned with a loopback packet identifier at the source from the primary PW in response to a downstream failure; and in response to receiving the returned data packet with the loopback packet identifier, retransmitting the data packet to the destination over a backup PW.