Re: [ssm] Who uses SSM?

Marshall Eubanks <marshall.eubanks@gmail.com> Thu, 18 November 2004 14:32 UTC

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Date: Thu, 18 Nov 2004 09:10:05 -0500
From: Marshall Eubanks <marshall.eubanks@gmail.com>
To: Beau Williamson <bwilliam@cisco.com>
Subject: Re: [ssm] Who uses SSM?
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References: <2F1FC1DEA077D5119FAD00508BCFD6D2139A1B7C@zsc3c030.us.nortel.com> <6.0.0.22.2.20041117184448.033d1508@edison.cisco.com>
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Cc: Sundeep Singatwaria <ssingatw@nortelnetworks.com>, ssm@ietf.org
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My experience is that not all routers that support IGMP v2 can support
v3. (Cisco and Juniper and Nortel
do not make all of the world's routers.) This can be very hard to
determine from product data sheets,
by the way.

I am glad to hear of SSM customers in the Enterprise space.

Regards
Marshall


On Wed, 17 Nov 2004 18:45:23 -0600, Beau Williamson <bwilliam@cisco.com> wrote:
>  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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