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JMS Topic: Configuration: Multicast

Configuration Options     Related Tasks     Related Topics

Multicasting enables the delivery of messages to a select group of hosts that subsequently forward the messages to topic subscribers. Use this page define the multicast settings for this JMS topic.

IP multicast is a simple broadcast technology that enables multiple applications to "subscribe" to a given IP address and port number and listen for messages. A multicast address is an IP address in the range from 224.0.0.0 to 239.255.255.255.

You configure topics explicitly or by configuring a JMS template to define and manage multiple topics with similar attribute settings.

Configuration Options

Name Description
Multicast Address

The IP address that this topic uses to transmit messages to multicast consumers.

MBean Attribute (Does not apply to application modules):
MulticastParamsBean.MulticastAddress

Changes take effect after you redeploy the module or restart the server.

Multicast TTL

The number of routers that a message can traverse enroute to the consumers. A value of 1 limits the message to one subnet (which prevents it from traversing any routers).

This value is independent of the JMSExpirationTime value.

MBean Attribute (Does not apply to application modules):
MulticastParamsBean.MulticastTimeToLive

Minimum value: 0

Maximum value: 255

Changes take effect after you redeploy the module or restart the server.

Multicast Port

The IP port that this topic uses to transmit messages to multicast consumers.

MBean Attribute (Does not apply to application modules):
MulticastParamsBean.MulticastPort

Minimum value: 1

Maximum value: 65535

Changes take effect after you redeploy the module or restart the server.

Related Tasks

Related Topics


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