Best Practices for Advertisement of Multiple Paths in IBGP
draft-ietf-idr-add-paths-guidelines-04

The information below is for an old version of the document
Document Type Expired Internet-Draft (idr WG)
Last updated 2013-05-30 (latest revision 2012-11-26)
Replaces draft-uttaro-idr-add-paths-guidelines
Stream IETF
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This Internet-Draft is no longer active.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-ietf-idr-add-paths-guidelines-04.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)
Virginie Van den Schrieck (v.vandenschrieck@gmail.com)
Pierre Francois (pierre.francois@imdea.org)
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.)