To make individual topics, or groups of topics, capable of being multicast you need to make changes to the topic hierarchy.
To make changes to the topic hierarchy:
- Switch to the Broker Administration perspective.
- In the Domains view, expand the appropriate broker domain.
- Double-click Topics to open the Topics Hierarchy editor.
- In the Topics Hierarchy editor, right-click the topic, or group of topics, that you want to make capable of being multicast, and select Properties.
- In the left panel of the Properties for Topics window, select Multicast.
- Select Enabled for the topic root, or child topic root, in the Multicast property that you want to enable:
For the topic root, the options are either Enabled or Disabled. The default is Disabled.
For a child topic root, the options are Inherit, Enabled, or Disabled. The default is Inherit.
- Automatic Multicast IPv4 Address is selected by default. If you clear Automatic Multicast IPv4 Address you must type in the name of the IPv4 MC Group Address. This property is mandatory.
- Optional: Select Encrypted.
- Select the Quality of Service that you require. The options are Reliable or Unreliable. The default is Reliable.
- Click OK.