Re: IPTV and ASM

[Jeff Tantsura <jeff.tantsura () ericsson com>]

Mike,

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.

Regards,
Jeff

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

> Marshall,
>
> 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?
>
> thanks,
> mike
>
> > Regards
> > Marshall
> >
> > > thanks,
> > > mike