Create a new Multicast communication information object

IBM MQ Multicast offers low latency, high fan out, reliable multicast messaging.


Multicast is more efficient that traditional unicast publish/subscribe messaging, and can be scaled to a high number of subscribers. IBM MQ enables reliable Multicast messaging by using acknowledgments, negative acknowledgments, and sequence numbers to achieve low latency messaging with high fan out.

IBM MQ Multicast's fair delivery enables near simultaneous delivery, ensuring that no recipient gains an advantage. As IBM MQ Multicast uses the network to deliver messages, a publish/subscribe engine is not needed to fan-out data. After a topic is mapped to a group address, there is no need for a queue manager as publishers and subscribers can operate in a peer-to-peer mode. This allows the load to be reduced on queue manager servers, and the queue manager server is no longer a potential point of failure.

To create a new topic in the IBM MQ Explorer:


Procedure

  1. Expand the queue manager that we want to host the multicast communication information object on to display the object-folders in the Navigator view.
  2. Right-click Communication Information, then click New > Multicast Communication Information.


Results

The Communication Information wizard opens. Work though the wizard to create a new communication information object. Parent topic: Configure publish/subscribe for Version 7.0 and later queue managers


Related reference