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RFC 8149
Title: RSVP Extensions for Reoptimization of
Loosely Routed Point-to-Multipoint
Traffic Engineering Label
Switched Paths (LSPs)
Author: T. Saad, Ed.,
R. Gandhi, Ed.,
Z. Ali,
R. Venator,
Y. Kamite
Status: Standards Track
Stream: IETF
Date: April 2017
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 17
Characters: 37916
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-teas-p2mp-loose-path-reopt-09.txt
URL: https://www.rfc-editor.org/info/rfc8149
DOI: 10.17487/RFC8149
The reoptimization of a Point-to-Multipoint (P2MP) Traffic Engineering
(TE) Label Switched Path (LSP) may be triggered based on the need to
reoptimize an individual source-to-leaf (S2L) sub-LSP or a set of
S2L sub-LSPs, both using the Sub-Group-based reoptimization method, or
the entire P2MP-TE LSP tree using the Make-Before-Break (MBB) method.
This document discusses the application of the existing mechanisms
for path reoptimization of loosely routed Point-to-Point (P2P) TE
LSPs to the P2MP-TE LSPs, identifies issues in doing so, and defines
procedures to address them. When reoptimizing a large number of S2L
sub-LSPs in a tree using the Sub-Group-based reoptimization method,
the S2L sub-LSP descriptor list may need to be semantically
fragmented. This document defines the notion of a fragment
identifier to help recipient nodes unambiguously reconstruct the
fragmented S2L sub-LSP descriptor list.
This document is a product of the Traffic Engineering Architecture and
Signaling Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
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