Best Practices for Advertisement of Multiple Paths in BGP
draft-uttaro-idr-add-paths-guidelines-03

Document Type Replaced Internet-Draft (individual)
Last updated 2011-01-10 (latest revision 2010-10-24)
Replaced by draft-ietf-idr-add-paths-guidelines
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-uttaro-idr-add-paths-guidelines-03.txt

Abstract

Add-Paths is a BGP enhancement that allows a BGP router to advertise multiple distinct paths for the same prefix/NLRI. This provides a number of potential benefits, including reduced routing churn, faster convergence and better loadsharing. This document provides recommendations to implementers of Add-Paths so that network operators have the tools needed to address their specific applications and to manage the scalability impact of Add- Paths. A router implementing Add-Paths may learn many paths for a prefix and must decide which of these to advertise to peers. This document analyses different algorithms for making this selection and provides recommendations based on the target application.

Authors

Jim Uttaro (uttaro@att.com)
Place Barbe (virginie.vandenschrieck@uclouvain.be)
Pierre Francois (pierre.francois@uclouvain.be)
Roberto Fragassi (roberto.fragassi@alcatel-lucent.com)
Adam Simpson (adam.simpson@alcatel-lucent.com)
Prodosh Mohapatra (pmohapat@cisco.com)

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