This RFC 7412 was published in 2014
This document presents the basic network objectives for the behavior of Shared Mesh Protection (SMP) that are not based on control-plane support.
This document provides an expansion of the basic requirements presented in RFC 5654 ("Requirements of an MPLS Transport Profile") and RFC 6372 ("MPLS Transport Profile (MPLS-TP) Survivability Framework").
This document provides requirements for any mechanism that would be used to implement SMP for MPLS-TP data paths, in networks that delegate protection switch coordination to the data plane.
RFC 7412 introduction
The MPLS Transport Profile (MPLS-TP) is described in [RFC5921].
[RFC6372] provides a survivability framework for MPLS-TP and is the foundation for this document.
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