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Extensions to Resource Reservation Protocol For Re-optimization of Loosely Routed Point-to-Multipoint Traffic Engineering LSPs

Document Type Replaced Internet-Draft (teas WG)
Expired & archived
Authors Tarek Saad , Rakesh Gandhi , Zafar Ali , Robert H. Venator , Yuji Kamite
Last updated 2014-12-08 (Latest revision 2014-09-30)
Replaces draft-tsaad-mpls-p2mp-loose-path-reopt
Replaced by draft-ietf-teas-p2mp-loose-path-reopt
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Dead WG Document
Document shepherd Loa Andersson
IESG IESG state Replaced by draft-ietf-teas-p2mp-loose-path-reopt
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


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 RSVP-TE 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. This document also defines markers to indicate beginning and end of a S2L sub-LSP descriptor list when RSVP message needs to be fragmented due to large number of S2L sub-LSPs when performing re-optimization.


Tarek Saad
Rakesh Gandhi
Zafar Ali
Robert H. Venator
Yuji Kamite

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)