To make a broker capable of handling multicast requests.
Before you can use multicast, you must define some topics as capable of being multicast.
For the topic root, the choice is either Enabled or Disabled. The default is Disabled.
For a child topic root, the choice can be Inherit, Enabled, or Disabled. The default is Inherit.
The recommended way of changing the broker's multicast configuration is to use the workbench. However, you can also use the command mqsichangeproperties to change the broker's properties. See mqsichangeproperties command.
Property name | mqsichangeproperties parameter |
---|---|
Multicast Enabled | multicastEnabled |
Min Address | multicastAddressRangeMin |
Max Address | multicastAddressRangeMax |
Data Port | multicastDataPort |
Broker Packet Size | multicastPacketSizeBytes |
Broker Heartbeat Timeout | multicastHeartbeatTimeoutSec |
Broker Multicast TTL | multicastMCastSocketTTL |
Broker Network Interface | multicastMulticastInterface |
Overlapping Multicast Topic Behavior | multicastOverlappingTopicBehavior |
Maximum Key Age | multicastMaxKeyAge |
Broker Transmission Rate Limit Activation | multicastLimitTransRate |
Broker Transmission Rate Limit Value | multicastTransRateLimitKbps |
Client NACK Back Off Time | multicastBackoffTimeMillis |
Client NACK Check Period | multicastNackCheckPeriodMillis |
Client Packet Buffer Number | multicastPacketBuffers |
Client Socket Buffer Size | multicastSocketBufferSizeKbytes |
Broker History Cleaning Time | multicastHistoryCleaningTimeSec |
Broker Minimal History Size | multicastMinimalHistoryKBytes |
Broker NACK Accumulation Time | multicastNackAccumulationTimeMillis |
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