RFC 8104

Pseudowire (PW) Endpoint Fast Failure Protection, March 2017

Canonical URL:
https://www.rfc-editor.org/rfc/rfc8104.txt
File formats:
Plain TextPDF
Status:
PROPOSED STANDARD
Authors:
Y. Shen
R. Aggarwal
W. Henderickx
Y. Jiang
Stream:
IETF
Source:
pals (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC8104

Discuss this RFC: Send questions or comments to pals@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

This document specifies a fast mechanism for protecting pseudowires (PWs) transported by IP/MPLS tunnels against egress endpoint failures, including egress attachment circuit (AC) failure, egress provider edge (PE) failure, multi-segment PW terminating PE failure, and multi-segment PW switching PE failure. Operating on the basis of multihomed customer edge (CE), redundant PWs, upstream label assignment, and context-specific label switching, the mechanism enables local repair to be performed by the router upstream adjacent to a failure. The router can restore a PW in the order of tens of milliseconds, by rerouting traffic around the failure to a protector through a pre-established bypass tunnel. Therefore, the mechanism can be used to reduce traffic loss before global repair reacts to the failure and the network converges on the topology changes due to the failure.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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