Multicast socket receive error

[zevit MR]

Hello
We have One Admin and 2 Mananged server on same machine.
It is a quad server.
With 2 NICs.
Managed Server is giving this error.
<Jul 22, 2002 10:55:54 AM CDT> <Error> <Cluster> <Multicast socket receive error
: java.io.InterruptedIOException: Receive timed out
java.io.InterruptedIOException: Receive timed out
at java.net.PlainDatagramSocketImpl.receive(Native Method)
at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java
:90)
at java.net.DatagramSocket.receive(DatagramSocket.java:404)
at weblogic.cluster.FragmentSocket.receive(FragmentSocket.java:145)
at weblogic.cluster.MulticastManager.execute(MulticastManager.java:298)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
>
Also on weblogic console
Cluster - > Monitoring - > Monitor Server Participation Panel
shows that both our managed servers are part of the cluster..
But only Sent Frames has data.. Receive frame does not seem to be working.
I tried MultiCastTest Utility in 2 different dos prompts and seems to be working. (both windows shows send/receive).
Though i am not sure if it will work for a quad / 2NIC machine..
As utility does not take IP address of the server.
thanks