Session replication only functions for Enterprise Licenses. The servers participating in the replication must have a manual setting configuration done in their prefs.xml file.

Edit the prefs.xml file and fill in the entry for: replicate_session_host_port

Example for the first machine:

<replicate_session_host_port>192.168.1.19:7800</replicate_session_host_port>

and on the second machine a reference back to the first machine.

<replicate_session_host_port>192.168.1.18:7800</replicate_session_host_port>