The Multicast map depicts multicast topology, such as instances of the MulticastService, MulticastGroup, MulticastTree, MulticastSource, and MulticastRedundancyGroup classes, and connectivity between topological elements. The maps in the Global Console show labels for devices with special roles within Multicast.
The type of Multicast map is Multicast Connectivity (distribution tree).
The Multicast map is described more completely in VMware Smart Assurance Multicast Manager documentation.