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RFC 8102
Title: Remote-LFA Node Protection and Manageability
Author: P. Sarkar, Ed.,
S. Hegde,
C. Bowers,
H. Gredler,
S. Litkowski
Status: Standards Track
Stream: IETF
Date: March 2017
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 22
Characters: 50200
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-rtgwg-rlfa-node-protection-13.txt
URL: https://www.rfc-editor.org/info/rfc8102
DOI: 10.17487/RFC8102
The loop-free alternates (LFAs) computed following the current
remote-LFA specification guarantees only link protection. The
resulting remote-LFA next hops (also called "PQ-nodes") may not
guarantee node protection for all destinations being protected by it.
This document describes an extension to the remote-loop-free-based IP
fast reroute mechanisms that specifies procedures for determining
whether or not a given PQ-node provides node protection for a
specific destination. The document also shows how the same procedure
can be utilized for the collection of complete characteristics for
alternate paths. Knowledge about the characteristics of all
alternate paths is a precursor to applying the operator-defined
policy for eliminating paths not fitting the constraints.
This document is a product of the Routing Area Working Group 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 Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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