Re: mulcast assignments

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

Hi,

All modern routers support mapping from IGMPv2 to PIM SSM, all static, some others thru DNS, etc

Regards,
Jeff

On May 3, 2012, at 12:34 PM, "Nick Hilliard" <nick () foobar org> wrote:

> On 03/05/2012 21:00, Greg Shepherd wrote:
> > Sure, but GLOP predated SSM, and was really only an interim fix for
> > the presumed need of mcast address assignments. GLOP only gives you a
> > /24 for each ASN where SSM gives you a /8 for every unique unicast
> > address you have along with vastly superior security and network
> > simplicity.
>
> SSM is indeed a lot simpler and better than GLOP in every conceivable way -
> except vendor support.  It needs igmpv3 on all intermediate devices and SSM
> support on the client device.  All major desktop operating systems now have
> SSM support (OS/X since 10.7/Lion), but there is still lots of older
> hardware which either doesn't support igmpv3 or else only supports it in a
> very primitive fashion.  This can lead to Unexpected Behaviour in naive
> roll-outs.
>
> Nick