Operating MPLS Transport Profile LSP in Loopback Mode

This document specifies an extension to MPLS Operation, Administration, and Maintenance (OAM) to operate an MPLS Transport Profile(MPLS-TP) Label Switched Path (LSP) in loopback mode for management purpose. This extension can be used to loop either all traffic (i.e, data and control traffic) or only OAM traffic up to certain LSR on the path of the MPLS-TP LSP back to the source.