[pim] I-D Action: draft-ietf-pim-ecmp-04.txt
internet-drafts@ietf.org Thu, 28 June 2012 21:05 UTC
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Date: Thu, 28 Jun 2012 14:05:11 -0700
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Subject: [pim] I-D Action: draft-ietf-pim-ecmp-04.txt
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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-04.txt Pages : 12 Date : 2012-06-28 Abstract: A Protocol Independent Multicast (PIM) 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. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-pim-ecmp There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-pim-ecmp-04 A diff from previous version is available at: http://tools.ietf.org/rfcdiff?url2=draft-ietf-pim-ecmp-04 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/
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