RFC 8405

Shortest Path First (SPF) Back-Off Delay Algorithm for Link-State IGPs, June 2018

Canonical URL:
https://www.rfc-editor.org/rfc/rfc8405.txt
File formats:
Plain TextPDF
Status:
PROPOSED STANDARD
Authors:
B. Decraene
S. Litkowski
H. Gredler
A. Lindem
P. Francois
C. Bowers
Stream:
IETF
Source:
rtgwg (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC8405

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

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


Abstract

This document defines a standard algorithm to temporarily postpone or "back off" link-state IGP Shortest Path First (SPF) computations. This reduces the computational load and churn on IGP nodes when multiple temporally close network events trigger multiple SPF computations.

Having one standard algorithm improves interoperability by reducing the probability and/or duration of transient forwarding loops during the IGP convergence when the IGP reacts to multiple temporally close IGP events.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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