A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : PCEP Procedures for Hierarchical Label Switched Paths
Authors : Cyril Margaria
Colby Barth
Sudhir Cheruathur
Ben J.C. Tsai
Filename : draft-margaria-pce-pcep-hlsp-extension-00.txt
Pages : 16
Date : 2016-03-21
Abstract:
Label Switched Paths (LSPs) set up in Multiprotocol Label Switching
(MPLS) or Generalized MPLS (GMPLS) networks can be used to form links
to carry traffic in those networks or in other (client) networks.
These LSPs can be referred to as Hierarchical LSPs (H-LSP). H-LSPs
allow to improve the scalability of MPLS/GMPLS networks by creating
hierarchies of TE-LSPs. Those hierarchies are an important state for
optimal TE-Computation, therefore a stateful PCE should be able to
discover and manage those H-LSPs. A PCE having a global view of the
network, including Forwarding Adjacencies LSP (FA-LSP) and non FA-
LSPs, can create more optimal hierachies and (re-)compute the TE-LSPs
path to make use of the H-LSPs. In particular a PCE can better
leverage the Private H-LSP introduced by RFC6107 without influencing
the IGP, allowing a less disruptive use of Hierarchies.
RFC6107 defined Protocol mechanisms to facilitate the establishment
of such LSPs and to bundle traffic engineering (TE) links to reduce
the load on routing protocols.
This document defines PCEP extensions to learn about and control
those H-LSPs.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-margaria-pce-pcep-hlsp-extension/
There's also a htmlized version available at:
https://tools.ietf.org/html/draft-margaria-pce-pcep-hlsp-extension-00
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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