How to configure multiple clusters on the same machine.

I am attempting to configure multiple clusters on the same set of machines. I have set the cluster name and multicase IP addresses to be different for each cluster. However I am still getting and error that states:
"This indicates that there are multiple clusters on this network attempting to use overlapping network configurations."
Is this not possible? If it is possible, is there some further way i need to tell the VMs they are part of different clusters?
Thanks,
Jacob

FYI: I'm using the wrong multicast IP above. 224.0.0.1 is reserved and something else should be used. See:
Re: UDP flood hosed my LAN?

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