Summary

Recommendation ITU-T G.8121/Y.1381 specifies both the functional components and the methodology that should be used in order to specify multi-protocol label switching – transport profile (MPLS-TP) layer network functionality of network elements; it does not specify individual MPLS-TP network equipment as such.

Corrigendum 1 removes irrelevant indexes in a few "OAM Tool" MIs.

Amendment 1 deletes the LCAS-capable ODUk to MPLS-TP Adaptation function (clause 11.2.2) which is left as an empty clause. Figures 1-1 and 9-1 were also replaced.