This Recommendation provides MPLS-TP OAM mechanisms that can be applied in Packet Transport Networks (PTN). It specifies mechanisms for user-plane OAM (Operations, Administration and Maintenance) in MPLS-TP networks to meet the MPLS-TP OAM requirements defined in [IETF RFC 5860]. It also specifies the MPLS-TP OAM packet formats, syntax and semantics of MPLS-TP OAM packet fields.
ITU-T G.8113.1-2012 history
2012ITU-T G.8113.1-2012 Operations, administration and maintenance mechanism for MPLS-TP in packet transport networks (Study Group 15)