All things related to multicast

[Toerless Eckert <>]

On Tue, Nov 12, 2002 at 12:50:05PM -0500, Alan Crosswell wrote:
> > 
> > > 
> > > Thanks for starting this thread. I hadn't looked into RGMP prior to 
> > > your post. I had the same thoughts about IGMP snooping, I had 
> > > felt that 
> > > it would be of little use in the core, since everything (I think) is 
> > > done with PIM.
> > 
> > IGMP snooping must be turned on on the C6509 together with RGMP.
> > It is not a "protocol" requirement, but rather implementation thing.
> > 
> > Jan
> > 
> 
> Will this then cause by dual star to hose up my group memberships?

No. This will work fine.

The only thing you may want to remember with or without IGMP is that
RGMP does not constrain traffic on the link(s) between the two switches
of your. So you should make sure that the bandwidth on these links
is high enough, if necessary with the help of etherchannel.

Cheers
        Toerless