Can somebody tell me the difference between followed UDP con

[liujw2001]

Hello:
This time I want to config web cluster between Windows XP and Linux.
I found there are two place to configure the multicast.
One is in file: D:\jboss-4.0.4.GA\server\all\deploy\tc5-cluster.sar\META-INF\jboss-service.xml, which show as follows:

<UDP mcast_addr="${jboss.partition.udpGroup:230.1.2.7}"
 mcast_port="45577"
 ucast_recv_buf_size="20000000"
 ucast_send_buf_size="640000"
 mcast_recv_buf_size="25000000"
 mcast_send_buf_size="640000"
 loopback="true"
 max_bundle_size="64000"
 max_bundle_timeout="30"
 use_incoming_packet_handler="true"
 use_outgoing_packet_handler="true"
 ip_ttl="5"
 down_thread="false" up_thread="false"
 enable_bundling="true"/>

The other is in file: D:\jboss-4.0.4.GA\server\all\deploy\cluster-service.xml:

<UDP mcast_addr="${jboss.partition.udpGroup:228.1.2.3}"
 mcast_port="45566"
 ip_ttl="8" ip_mcast="true"
 mcast_send_buf_size="800000" mcast_recv_buf_size="150000"
 ucast_send_buf_size="800000" ucast_recv_buf_size="150000"
 loopback="true"/>

When I grab the IP package, I found both of them sent package. So I want to ask the difference between them. Which one is useful for multicast configure?

Thank you!

[brian.stansberry]

They are both useful. They configure two separate communication channels that are used by different clustered services. The tc5-cluster.sar one is used for HttpSession replication. The cluster-service.xml one is used for most everything else (except EJB3 which has its own channels if you use it.)

[liujw2001]

Thank you for your reply!
On your opinion, If I only want to implement the Session replication, I only need to configure the tc5-cluster.sar?