Technical Summary
This document describes procedures to support node protection for
P2P and MP2MP LSPs built by mLDP. In order to protect a node N,
the Point of Local Repair (PLR) of N must learn the Merge Point (MPT)
LSR(s) of node N to be able to redirected traffic if node N fails. Redirecting
the traffic around the failed node N depends on existing P2P LSPs
from the PLRto the MPTs bypassing node N.
The procedures to setup these P2P LSPs are outside the scope of
this document, but one could use RSVP-TE or LDP LFA based
techniques to accomplish this.
The solution described in this document signals the MPT LSR(s) to the
PLR LSR(s) via a Targeted LDP (tLDP) session [RFC5036]. By having a
tLDP session with the PLR, most of the mLDP features currently
defined should just work, like Make-Before-Break (MBB), Graceful
Restart (GR), Typed Wildcard FEC support, etc. All this is achieved
at the expense of having an additional tLDP session between an MPT
and PLR.
Working Group Summary
Nothing worth noting.
Document Quality
Currently no known implementations.
Personnel
Who is the Document Shepherd for this document? Loa Andersson
Who is the Responsible Area Director? Deborah Brungard