This document describes a mechanism to address the requirements for
protection of the Multi-Protocol Label Switching Transport Profile
(MPLS-TP) Label Switched Paths (LSP) in a ring topology. The
mechanism defined herein is designed to support point-to-point as
well as point-to-multipoint LSPs.
The MPLS-TP section layer OAM is used to monitor the connectivity
between each two adjacent nodes using the mechanisms defined in the
The Automatic Protection Switching (APS) protocol is used for
coordination of protection switching actions between the ring nodes.