Making Route Flap Damping Usable
Cristel Pelsser , Randy Bush , Keyur Patel , Prodosh Mohapatra and Olaf Maennel
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.
Publication Details
- Publication Type
- Miscellaneous
- Publication Date
- May 2014
- Published In
- RFC
- Volume & Issue
- No. 7196
- Publisher
- RFC Editor
- Digital Object Identifier (DOI)
- 10.17487/RFC7196
- External Link
- https://rfc-editor.org/rfc/rfc7196.txt
Suggested citation
Cristel Pelsser, Randy Bush, Keyur Patel, Prodosh Mohapatra, and Olaf Maennel. 2014. Making Route Flap Damping Usable. RFC 7196 (May 2014). https://doi.org/10.17487/RFC7196
BibTeX Citation
@misc{Pelsser2014,
title = {Making Route Flap Damping Usable},
author = {Cristel Pelsser and Randy Bush and Keyur Patel and Prodosh Mohapatra and Olaf Maennel},
year = 2014,
month = may,
journal = {RFC},
publisher = {RFC Editor},
series = {Request for Comments},
number = 7196,
doi = {10.17487/RFC7196},
url = {https://rfc-editor.org/rfc/rfc7196.txt},
howpublished = {RFC 7196},
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.},
groups = {RFCs},
keywords = {BGP, Route Flap Damping, Route Damping},
pagetotal = 8
}
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