A new Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Pseudowire Emulation Edge to Edge Working Group of the IETF.
Title : Pseudowire Preferential Forwarding Status Bit
Author(s) : P. Muley, et al
Filename : draft-ietf-pwe3-redundancy-bit-04.txt
Pages : 34
Date : 2011-03-14
This document describes a mechanism for standby status signaling of
redundant pseudowires (PWs) between their termination points. A set
of redundant PWs is configured between provider edge (PE) nodes in
single-segment pseudowire (SS-PW) applications, or between
terminating provider edge (T-PE) nodes in multi-segment pseudowire
(MS-PW) applications.
In order for the PE/T-PE nodes to indicate the preferred PW to use
for forwarding PW packets to one another, a new status bit is needed
to indicate a preferential forwarding status of Active or Standby for
each PW in a redundant set.
In addition, a second status bit is defined to allow peer PE nodes to
coordinate a switchover operation of the PW.
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http://www.ietf.org/internet-drafts/draft-ietf-pwe3-redundancy-bit-04.txt
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