Add a startup switch to configure a multicast port
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Key: JBAS-3537
URL:
http://jira.jboss.com/jira/browse/JBAS-3537
Project: JBoss Application Server
Issue Type: Feature Request
Security Level: Public (Everyone can see)
Components: Clustering
Reporter: Brian Stansberry
Assigned To: Brian Stansberry
Fix For: JBossAS-5.0.0.CR1
Proper cluster isolation with UDP requires use of a different cluster name, different
multicast address and different multicast port. (See
http://wiki.jboss.org/wiki/Wiki.jsp?page=PromiscuousTraffic for why the latter is
important.)
The -g and -u switches allow easy configuration of the cluster name and multicast address.
But, configuring the port that way wasn't practical, as an AS instance may have many
different JChannels.
With the JGroups multiplexer, a switch is a possibility, as by default there will only be
one JChannel per server instance. (If a user wanted to use more than one JChannel, they
would need to manually configure the second one to use a different port.)
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