$SYS/Broker/broker name/ExecutionGroup/execution group/Statistics/Multicast/Topics
$SYS/Broker/broker name/ExecutionGroup/execution group/Statistics/Multicast/Groups
$SYS/Broker/broker name/ExecutionGroup/execution group/Statistics/Multicast/Summarywhere broker name is the name of the broker, and execution group is the name of the execution group that is deployed to that broker.
Subscribers receive statistics reports only from those brokers that have been enabled to produce statistics.
The publications are JMS Bytes Messages that contain the statistics reports in XML format.