From: Marshall Eubanks <tme at americafree.tv>
Date: June 16, 2009 6:27:52 AM EDT
To: homegate at ietf.org
Cc: Greg Shepherd <gjshep at gmail.com>, Leonard Giuliano <lenny at juniper.net
>
Subject: [homegate] Homegate and Multicast
I have been wading through all of this, and was surprised to see no
mention
of multicast in
<http://trac.tools.ietf.org/bof/trac/raw-attachment/wiki/WikiStart/HomeGate%20BoF%20Proposal%20-%20IETF%2075%20-%20v7.pdf
>
A blow to the first round of multicast deployments (almost a decade
ago now!) was the inability of
most of the then current home routers to support things such as IGMP
proxying. If the IETF is going to specify a
new effort to specify home gateways, then in my opinion this
specification should support at least SSM multicast reception
properly.
Supporting multicast in the home environment is becoming common in
video deployments, but the end user typically
does not see this on their home network and there is very little
multicast support to the end user (instead of just to their set top
boxes). However,
the trend in the industry is towards merging the reception of
Internet-transported video and provider-transported video into
common hardware platforms. Internet video
would certainly benefit from support of multicast reception, and
there seems to be a recognition of that in the industry. The
CableLabs document "IPv4 and IPv6 eRouter Specification"
http://www.cablelabs.com/specifications/CM-SP-eRouter-I03-070518.pdf
states as their goal :
The specification defines a) CPE provisioning with IPv4 and IPv6
addresses, b) IPv4 data forwarding with NAPT
and IPv6 data forwarding, c) Ability to forward IP Multicast traffic
and d) Preserving IP QoS markings on IP data
to and from the CPE devices.
and includes sections on IGMP proxing as well as v4 and v6 multicast
support. The other two documents mentioned as
parallel efforts :
Broadband Forum TR-124 defines a set of modular functional
requirements for broadband residential gateways:http://www.broadband-forum.org/technical/download/TR-124.pdf
.
The Home Gateway Initiative also has a Home Gateway Requirements:
Residential Profile document:http://www.homegatewayinitiative.org/publis/HGI_V1.01_Residential.pdf
.
also include multicast support.
So, while I support this effort, I would like to see multicast SSM
added to Theme 1.
Regards
Marshall
P.S. Can I also suggest that what is basically a text file BOF
charter should be served as a text file in the usual
fashion ?
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