[Ganglia-general] ganglia multicast question

[Dave Wallace, Unlimited Scale, Inc.]

I have a cluster of 4 nodes called cluster_a. The nodes on cluster_a 
broadcast on net 192.168.0.x. I have an administration node that broadcasts 
on 10.0.0.x. (eth0). It also is connected to cluster_a on its eth1 
interface. There is a second cluster (cluster_b) on the 10.0.0.x network. 

How do I set up multicast routing so that gmond on the administrative node 
can see both clusters?? 

Thanks for your help in advance. 

Dave Wallace