BGP VPWS uses BGP as the signaling protocol to transmit Layer 2 information and VC labels and implements VPWS in a point-to-point manner on an MPLS network.
This section describes how to configure mutual protection between an LDP VC and a CCC VC. If a CCC VC (or LDP VC) functioning as the primary path fails, traffic is switched to the LDP VC (CCC VC) functioning as the backup path, improving reliability.
Static pseudo wire (PW) fast reroute (FRR) enables service traffic to be promptly switched to the secondary PW if the primary PW fails. After the primary PW recovers, static PW FRR determines whether to switch service traffic back to the primary PW based on the configured revertive switching policy.
Pseudo wire (PW) automatic protection switching (APS) applies to scenarios where the primary and secondary PWs share the same source and same destination.
This section describes how to configure MS-PW redundancy when a PE is single-homed to an SPE. MS-PWs in primary/secondary mode are configured on the SPE, and negotiation of PW redundancy is in master/slave mode.