Hi,
I am currently setting up 2 linux server and enabled the clustering and multicast for these 2 servers. I verified using the cat /proc/net/igmp command and found out once I started the tomcat, machine will subscribe to the 228.0.0.4 group, multicast address. I also used the ethereal to see the network traffic, both machine 1 and machine 2 send out UDP packet to address 228.0.0.4. Since from machine1, it can see both the traffic >From machine1 and machine2 to 228.0.0.4, I assume it can receive the message on group 228.0.0.4. However I did not find any tcp replication traffic come between machine1 and machine2, the traffic between machine 1 and 2 seems all MySQL database request. Can anyone shed some light on? I did not figure out what's the mcastBIndAddr inside the server.xml. Documentation indicate it is for binding the multicast socket to an address? I donot understand what this is for. Thanks Pat
