A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Protocol Independent Multicast Working Group of the IETF.
Title : Protocol Independent Multicast ECMP Redirect
Author(s) : Yiqun Cai
Liming Wei
Heidi Ou
Vishal Arya
Sunil Jethwani
Filename : draft-ietf-pim-ecmp-03.txt
Pages : 12
Date : 2012-04-26
A Protocol Independent Multicast (PIM) [RFC4601] router uses the
Reverse Path Forwarding (RPF) procedure to select an upstream
interface and router to build forwarding state. When there are equal
cost multiple paths (ECMP), existing implementations often use hash
algorithms to select a path. Such algorithms do not allow the spread
of traffic among the ECMPs according to administrative metrics. This
usually leads to inefficient or ineffective use of network resources.
This document introduces the ECMP Redirect, a mechanism to improve
the RPF procedure over ECMPs. It allows ECMP path selection to be
based on administratively selected metrics, such as data transmission
delays, path preferences and routing metrics.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-pim-ecmp-03.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-pim-ecmp-03.txt
The IETF datatracker page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-pim-ecmp/
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