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Re: IPTV and ASM
From: Jeff Tantsura <jeff.tantsura () ericsson com>
Date: Wed, 28 Dec 2011 18:32:38 -0500


To my knowledge in most today's networks even if legacy equipment don't support IGMPv3 most likely 1st hop router does 
static translation and SSM upstream.
The reason not to migrate to SSM is usually - ASM is already there and works just fine :)
Cost to support RP infrastructure is usually the main non-technical factor to not to use ASM.
Would be interested to hear from the SPs on the list.


On Dec 28, 2011, at 2:19 PM, "Mike McBride" <mmcbride7 () gmail com> wrote:


On Wed, Dec 28, 2011 at 1:50 PM, Marshall Eubanks
<marshall.eubanks () gmail com> wrote:
Dear Mike;

On Wed, Dec 28, 2011 at 4:48 PM, Mike McBride <mmcbride7 () gmail com> wrote:
Anyone using ASM (versus SSM) for IPTV? If so why?

From what I understand, the answer is likely to be "yes" and the
reason is likely to be "deployed equipment only
supports IGMP v2."

Agreed. I'm seeking confirmation, from IPTV implementers, that non
igmpv3 support is the reason for using ASM with IPTV. Versus other
reasons such as reducing state. Or is this a non issue and everyone is
using SSM with IPTV?




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