Summary

Amendment 1 to Recommendation ITU-T G.8110.1/Y.1370.1 provides functional components, based on Recommendation ITU‑T G.805, that allow the multi‑protocol label switching transport profile (MPLS‑TP) to be modelled in a way that is consistent with the description of other transport technologies defined by the ITU‑T, (e.g., the synchronous digital hierarchy (SDH) and the optical transport network (OTN)), to simplify integration with other transport technologies.

This Recommendation provides a representation of the MPLS-TP technology using the methodologies that have been used for other transport technologies (e.g., SDH, OTN and Ethernet).

NOTE – This ITU-T Recommendation is intended to be aligned with the IETF MPLS RFCs normatively referenced by this Recommendation.

In this Recommendation the architecture of MPLS-TP forwarding, operation, administration and maintenance (OAM), and network survivability is modelled from a network-level viewpoint. The description of the control plane and management plane aspects of MPLS-TP is outside the scope of this Recommendation.

The functional components described in this Recommendation also support the architecture for point‑to-multipoint (p2mp) MPLS-TP label switched paths (LSPs), in compliance with IETF RFC 5331 and IETF RFC 5332.

This edition of ITU-T G.8110.1/Y.1370.1 includes the changes introduced by Erratum 1 (09/2012).

This amendment updates references, removes items formerly considered for further study and incorporates terms formerly defined in Recommendations ITU-T G.8101/Y.1355 (2016).