A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : PIM ECMP Redirect based on Linecard Replication Capacity and Power
Author(s) : Shankar Raman
Balaji Venkat Venkataswami
Gaurav Raina
Filename : draft-mjsraman-panet-ecmp-redirect-power-repl-cap-00.txt
Pages : 7
Date : 2012-11-05
Abstract:
This work derives itself from [1] which proposes a ECMP redirect from
a PIM upstream neighbor that instructs or advices the PIM downstream
neighbor to choose another of its own ECMP links between the former
and the latter. What we propose in this document is a criterion based
on power consumed in the linecards that comprise the ECMP links
between the former and the latter. Also the multicast replication
capacity available within the said linecards which form the ECMP
links between the two is taken into consideration while making a ECMP
redirect.
A PIM router uses 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-mjsraman-panet-ecmp-redirect-power-repl-cap
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-mjsraman-panet-ecmp-redirect-power-repl-cap-00
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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