Making Route Flap Damping Usable

Document Type Expired Internet-Draft (individual)
Authors Cristel Pelsser  , Keyur Patel  , Olaf Maennel  , Prodosh Mohapatra  , Randy Bush 
Last updated 2012-06-24 (latest revision 2011-12-22)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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, to reduce the high risks with RFD, with the result being damping a non-trivial amount of long term churn without penalizing well-behaved prefixes' normal convergence process.


Cristel Pelsser (
Keyur Patel (
Olaf Maennel (
Prodosh Mohapatra (
Randy Bush (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)