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RE: [ssm] Who uses SSM?



At 11/17/2004 01:34 PM, Sundeep Singatwaria wrote:

Beau - All routers that can support PIM-SM in hardware can also support PIM-SSM. We have customers using SSM mainly in the enterprise space.

Sundeep,

The problem is not the routers, it's the switches and the hosts that don't completely support IGMPv3.

Beau


Sundeep

-----Original Message-----
From: ssm-bounces@ietf.org [mailto:ssm-bounces@ietf.org]
Sent: Wednesday, November 17, 2004 7:21 AM
To: Marc Barisch; ssm@ietf.org
Subject: Re: [ssm] Who uses SSM?

At 11/17/2004 07:30 AM, Marc Barisch wrote:
>Hi
>
>I have read about the advantages of PIM-SSM over PIM-SM from a technical
>point of view.
>For a seminar paper at my university, I would like to provide some figures
>concerning the deployment of the different PIM modes, especially regarding
>TV broadcast over packet networks.
>
>Does anybody know of providers using PIM-SSM or are using all PIM-SM?
>Are there any commercial deployments regarding PIM-SSM and IPv6.
>
>Thanks in advance
>
>Marc

Marc,

This is a classic case of "The spirit is willing but the flesh (hardware)
is weak."

The advantages are certainly well known and there is a growing push to
build networks that support SSM.  Unfortunately, the support for IGMPv3 is
still not pervasive enough in end-stations and (in some cases) edge routers
and switches to actually deploy SSM.  This is slowly changing and I expect
(I hope) that we will soon see greater deployments of SSM for one-to-many
multicast applications.

Beau Williamson

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