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This draft is a work item of the Pseudowire Emulation Edge to Edge Working Group of the IETF.
Title : Preferential Forwarding Status bit definition
Author(s) : P. Muley, M. Bocci, L. Martini
Filename : draft-ietf-pwe3-redundancy-bit-02.txt
Pages : 29
Date : 2009-10-26
This document describes a mechanism for standby status signaling of
redundant PWs between their termination points. A set of redundant
PWs is configured between PE nodes in SS-PW applications, or between
T-PE nodes in MS-PW applications.
In order for the PE/T-PE nodes to indicate the preferred PW path to
forward to one another, a new status bit is needed to indicate a
preferential forwarding status of active or standby for each PW in
the redundancy set.
In addition, a second status bit is defined to allow peer PE/T-PE
nodes to coordinate a switchover operation of the PW/MS-PW path.
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