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RFC 6870
Title: Pseudowire Preferential Forwarding Status Bit
Author: P. Muley, Ed.,
M. Aissaoui, Ed.
Status: Standards Track
Stream: IETF
Date: February 2013
Mailbox: praveen.muley@alcatel-lucent.com,
mustapha.aissaoui@alcatel-lucent.com
Pages: 35
Characters: 79254
Updates: RFC4447
I-D Tag: draft-ietf-pwe3-redundancy-bit-09.txt
URL: http://www.rfc-editor.org/rfc/rfc6870.txt
This document describes a mechanism for signaling the active and
standby status 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
defined. This bit indicates a Preferential Forwarding status with a
value 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.
Finally, this document updates RFC 4447 by adding details to the
handling of the PW status code bits in the PW Status TLV.
This document is a product of the Pseudowire Emulation Edge to Edge 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 Internet
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