RSVP-TE - Co-routed bidirectional LSPs

A corouted bidirectional packet LSP is a combination of two label-switched paths (LSPs) sharing the same path between a pair of ingress and egress nodes. It is established using the GMPLS extensions to RSVP-TE. A corouted bidirectional packet LSP can carry any of the standard types of MPLS-based traffic, including Layer 2 VPNs, Layer 2 circuits, and Layer 3 VPNs.