This graphic shows one cluster with three managed servers. Each server contains one member of a DT (distributed topic). Three messages are received by the DT (indicated by an arrow pointing from 3 messages to the entire DT). Each DT member contains (receives) all three messages, because they are forwarded among the members (indicated by arrows pointing from one member to another). Each member points to a single MDB instance in the same managed server, to show that each instance receives all messages.