RFC 7196

Making Route Flap Damping Usable, May 2014

Canonical URL:
https://www.rfc-editor.org/rfc/rfc7196.txt
File formats:
Plain TextPDF
Status:
PROPOSED STANDARD
Authors:
C. Pelsser
R. Bush
K. Patel
P. Mohapatra
O. Maennel
Stream:
IETF
Source:
idr (rtg)

Cite this RFC: TXT  |  XML

DOI:  http://dx.doi.org/10.17487/RFC7196

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

Other actions: Find Errata (if any)  |  Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

Route Flap Damping (RFD) was first proposed to reduce BGP churn in routers. Unfortunately, RFD was found to severely penalize sites for being well connected because topological richness amplifies the number of update messages exchanged. Many operators have turned RFD off. Based on experimental measurement, this document recommends adjusting a few RFD algorithmic constants and limits in order to reduce the high risks with RFD. The result is damping a non-trivial amount of long-term churn without penalizing well-behaved prefixes' normal convergence process.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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