http://www.rfc-editor.org/rfc/rfc7324.txt
RFC 7324: Updates to MPLS Transport Profile Linear Protection, E. Osborne2014-07-01T23:00:00-00:00This document contains a number of updates to the Protection State Coordination (PSC) logic defined in RFC 6378, "MPLS Transport Profile (MPLS-TP) Linear Protection". These updates provide some rules and recommendations around the use of TLVs in PSC, address some issues raised in an ITU-T liaison statement, and clarify PSC's behavior in a case not well explained in RFC 6378.