RFC 7715

Multipoint LDP (mLDP) Node Protection, January 2016

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IJ. Wijnands, Ed.
K. Raza
A. Atlas
J. Tantsura
Q. Zhao
mpls (rtg)

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DOI:  10.17487/RFC7715

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This document describes procedures to support node protection for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths (P2MP and MP2MP LSPs) that have been built by the Multipoint Label Distribution Protocol (mLDP). In order to protect a node N, the Point of Local Repair (PLR) Label Switching Router (LSR) of N must learn the Merge Point (MPT) LSR(s) of node N such that traffic can be redirected to them in case node N fails. Redirecting the traffic around the failed node N depends on existing Point-to-Point (P2P) Label Switched Paths (LSPs). The pre-established LSPs originate from the PLR LSR and terminate on the MPT LSRs while bypassing LSR N.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.