A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Pseudowire And LDP-enabled Services Working Group of the IETF.
Title : Protocol Independent Multicast (PIM) over Virtual Private LAN Service (VPLS)
Authors : Olivier Dornon
Jayant Kotalwar
Venu Hemige
Ray Qiu
Filename : draft-ietf-pals-vpls-pim-snooping-00.txt
Pages : 40
Date : 2015-04-21
Abstract:
This document describes the procedures and recommendations for
Virtual Private LAN Service (VPLS) Provider Edges (PEs) to facilitate
replication of multicast traffic to only certain ports (behind which
there are interested Protocol Independent Multicast (PIM) routers
and/or Internet Group Management Protocol (IGMP) hosts) via Protocol
Independent Multicast (PIM) snooping and proxying.
With PIM snooping, PEs passively listen to certain PIM control
messages to build control and forwarding states while transparently
flooding those messages. With PIM proxying, Provider Edges (PEs) do
not flood PIM Join/Prune messages but only generate their own and
send out of certain ports, based on the control states built from
downstream Join/Prune messages. PIM proxying is required when PIM
Join suppression is enabled on the Customer Equipment (CE) devices
and useful to reduce PIM control traffic in a VPLS domain.
The document also describes PIM relay, which can be viewed as light-
weight proxying, where all downstream Join/Prune messages are simply
forwarded out of certain ports but not flooded to avoid triggering
PIM Join suppression on CE devices.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pals-vpls-pim-snooping/
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-pals-vpls-pim-snooping-00
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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