[jboss-user] [Clustering/JBoss] - JGroups mulitcast test program problem, cannot use bind_addr

[timlai]

Hi,
I'm new to this forum.   I did attempt to search for a topic similar to mine but was not successful.    Please let me know if there's a similar topic.     

I'm currently attempting to test Multicasting using the JGroups test programs: 
org.jgroups.tests.McastReceiverTest
org.jgroups.tests.McastSenderTest

Each of the two boxes I am using have 2 NICs each.   Only one of these ethernet cards allows communication between servers (the other is port isolated).    So, I must use bind_addr to specify which NIC to use.   

However, I'm receiving the following error when attempting to use the programs with bind_addr: 
java.net.SocketException: Can't assign requested address

This error also occurs on a simliar environment that only has 1 NIC.     I also receive the same error when I specify "-use_all_interfaces" or when using the 1_4 versions of these test programs.   
(Note: When not specifying a bind_addr in my 1 NIC environment, there is no error and I am able to send/receive multicast messages correctly.   If not specifying a bind adress in my 2 NIC environment, no error is displayed, but no messages are received ) 

Can anyone tell me why this error is occuring?   See below for more specifics about my environment.


OS:  AIX 
JRE: 
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2)
Classic VM (build 1.4.2, J2RE 1.4.2 IBM AIX build ca142-20060421 (SR5) (JIT enabled: jitc))
jgroups version:  2.4?

Note: The servers are actually virutalized LPARs, and therefore the ethernet cards associated with the bind_addr IP are also virtual.  

Any help you can provide on this topic will be appreciated.  Thanks!  

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