Multicast configuration

[Gianfranco Manciocchi]

Hello,

I'm facing this problem using weblogic (software cluster) on Tru64 5.1 cluster.

Seems that the weblogic multicast cluster address 239.192.112.54:4567 receives others foreign multicast messages on the lan.

Making a test with a MulticastTest tool (http://support.bea.com/application_content/product_portlets/support_patterns/wls/MulticastErrorsPattern.html) from weblogic , I can see messages exchanged from processes that are not using the same IP:PORT.

Example:

MachineA: java utils.MulticastTest -N ginger -A 237.0.0.1 -P 7126

MachineB: java utils.MulticastTest -N fred -A 237.0.0.1 -P 7126

Machine C: java utils.MulticastTest -N smith -A 237.1.1.60 -P 7126

Machine D: java utils.MulticastTest -N jones -A 237.1.1.60 -P 7126

I should only see "fred" and "ginger" messages exchanged in the first combination. Conversely I should only see "smith" and "jones" messages exchanged in the second combination.

Instead I see messages cross between these combinations!

What could do the sysadmin to solve the problem ?

Thanks!