Subject: I-D Action: draft-cao-pwe3-mpls-tp-pw-over-bidir-lsp-03.txt

From: [email-masked]
Date: Tue, 28 Jun 2011 02:49:06 -0700

A New Internet-Draft is available from the on-line Internet-Drafts directories.

	Title           : LDP extensions for Explicit Pseudowire to transport LSP mapping
	Author(s)       : Mach(Guoyi) Chen
                          Wei Cao
                          Attila Takacs
                          Ping Pan
	Filename        : draft-cao-pwe3-mpls-tp-pw-over-bidir-lsp-03.txt
	Pages           : 16
	Date            : 2011-06-28

   A bidirectional Pseudowire (PW) service currently uses two
   unidirectional PWs each carried over a unidirectional LSP.  Each end
   point of a PW or segment of multi-segment PW (MS-PW) independently
   selects the LSP to use to carry the PW for which it is the head end.

   Some transport services may require that bidirectional PW traffic
   follows the same paths through the network in both directions.
   Therefore, PWs may be required to use LSP with congruent paths.
   Bidirectional LSPs or co-routed associated unidirectional LSPs allow
   this service to be provided.

   This document specifies an optional extension to LDP that allows both
   ends of a PW (or segment of a MS-PW) to select and bind to the same
   bidirectional LSP (or co-routed unidirectional LSPs).

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-cao-pwe3-mpls-tp-pw-over-bidir-lsp-03.txt

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This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-cao-pwe3-mpls-tp-pw-over-bidir-lsp-03.txt