How do I determine the source of multicasting?

I've noticed a 224.xxx.xxx.xxx IP address showing up in the ARP table
on one of my machines. My understanding is that it's the result of
multicasting, but I don't understand how to figure out who's doing the
multicasting.

--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form che...@prodigy.net.

Use something like Ethereal on a WinXP/WinNT/Wni2K machine on the same
network or connected via a hub (not a switch). You should be able to see
the "destination" address and then the source address. Then figure out
which naughty PC has the source IP address.

Paul DS.

"CJT" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> I've noticed a 224.xxx.xxx.xxx IP address showing up in the ARP table
> on one of my machines. My understanding is that it's the result of
> multicasting, but I don't understand how to figure out who's doing the
> multicasting.
>
> --
> The e-mail address in our reply-to line is reversed in an attempt to
> minimize spam. Our true address is of the form che...@prodigy.net.