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Just to update, I did get access to the RSFC, although it is just in
the only vlan on the switch, I don't see any usefulness to it
personally.

The solutions I identified include:
- turn on IGMP Multicast, effectively stopping it since none of my
hosts will never join the multicast group.
- turn on port security and block the offending source MAC address
- turn on port broadcast/multicast thresholds

So, we're trying out enabling IGMP Multicast.

-Michele

(Michele) wrote in message news:<. com>...
> I have a Catalyst 5500 switch that is part of a flat network, meaning
> there is another switch on the network, my 5500 has a connection to
> it, and we're all part of a /24 network. The 5500 has a 24-port card,
> all the ports on that card are in a single vlan.
>
> On the other switch is a ghost server, talking to machines on the
> other switch. None of the multicast machines are on the 5500. But
> everytime they ghost, it floods the 5500 and kills performance.
>
> How can I tell my switch not to broadcast the multicast packets? I do
> have a RSFC (RSM) although I'm currently trying to find the password
> for it. Right now I can see and change the switch settings, but not
> the RSFC. I hope to fix that soon...
>
> Thanks for any help.
>
> -Michele