Multipoint LDP Node Protection
RFC 7715, “Multipoint LDP Node Protection”, is a Proposed Standard document published in January 2016 by IJ. Wijnands, K. Raza, A. Atlas, J. Tantsura, Q. Zhao. The canonical text is published by the RFC Editor.
Abstract
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.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7715 is hosted at rfc-editor.org. Available in TXT,HTML.
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