HOW CAN I BLOCK BROADCASTING THROUGH CMM5 UNIT IN THE SAME APs IN ONE CLUSTER .
Are you asking if there is a way to segment traffic between multiple co-located APs all connected to the same CMM5?
If so, the CMM5 is just a passive pass through device for Ethernet. It does not have any switching or routing capability.
If that was not your question maybe you could ask your question in a different way?