Pseudowire Preferential Forwarding Status Bit (RFC6870)
Original Publication Date: 2013-Feb-01
Included in the Prior Art Database: 2013-Feb-21
Internet Society Requests For Comment (RFCs)
P. Muley: AUTHOR [+4]
This document provides the extensions to the Pseudowire (PW) control plane to support the protection schemes of the PW redundancy applications described in RFC 6718, "Pseudowire (PW) Redundancy" .
Internet Engineering Task Force (IETF) P. Muley, Ed. Request for Comments: 6870 M. Aissaoui, Ed. Updates: 4447 Alcatel-Lucent Category: Standards Track February 2013 ISSN: 2070-1721
Pseudowire Preferential Forwarding Status Bit
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.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6870.
Aissaoui Standards Track [Page 1]
RFC 6870 PW Preferential Forwarding Status Bit February 2013
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Muley & Aiss...