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.

Amendment 1:

–           Provides new Annex A "Mapping MPLS-TP packets to OTN using IMP".

–           Replaces Maintenance Communication Channel (MCC) by Management Communication Channel (MCC).

–           Makes editorial corrections in Figure 11-37 to Figure 11-40 (replacing ETH_FP by ETH_AP) and Table 11-17.

–           Updates the publication dates in References.

Corrigendum 1:

–           Adds "(Pattern)" to MTDe_TT_Sk_MI_1TH_Start in Table 9-19.

–           Changes MI_PCS[1…M] to MI_CoS[1...M] in Figure 11-2.

Amendment 2:

–           Specifies management information signals for reporting the state of linear and ring protection processes to equipment management functionality in clause 9.1.

–           Adds missing abbreviation for MTp and updates some references.