A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Traffic Engineering Architecture and Signaling Working Group of the IETF.
Title : RSVP Extensions For Re-optimization of Loosely Routed Point-to-Multipoint Traffic Engineering Label Switched Paths (LSPs)
Authors : Tarek Saad
Rakesh Gandhi
Zafar Ali
Robert H. Venator
Yuji Kamite
Filename : draft-ietf-teas-p2mp-loose-path-reopt-04.txt
Pages : 16
Date : 2015-11-16
Abstract:
For a Traffic Engineered (TE) Point-to-Multipoint (P2MP) Label
Switched Path (LSP), it is preferable in some cases to re-evaluate
and re-optimize the entire P2MP-TE LSP by re-signaling all its
Source-to-Leaf (S2L) sub-LSP(s). Existing mechanisms, a mechanism
for an ingress Label Switched Router (LSR) to trigger a new path
re-evaluation request and a mechanism for a mid-point LSR to notify
an availability of a preferred path, operate on an individual or a
sub-group of S2L sub-LSP(s) basis only.
This document defines Resource Reservation Protocol (RSVP) signaling
extensions to allow an ingress node of a P2MP-TE LSP to request the
re-evaluation of the entire LSP tree containing one or more S2L
sub-LSPs whose paths are loose (or abstract) hop expanded, and for a
mid-point LSR to notify to the ingress node that a preferable tree
exists for the entire P2MP-TE LSP. For re-optimizing a group of S2L
sub-LSP(s) in a tree, an S2L sub-LSP descriptor list can be used to
signal one or more S2L sub-LSPs in an RSVP message. This document
defines markers to indicate beginning and end of an S2L sub-LSP
descriptor list when the RSVP message needs to be fragmented due to
large number of S2L sub-LSPs in the message when performing sub-group
based re-optimization.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-teas-p2mp-loose-path-reopt/
There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-teas-p2mp-loose-path-reopt-04
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-teas-p2mp-loose-path-reopt-04
Please note that it may take a couple of minutes from the time of submission
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