Hi All, Turning around the problem , and testing conf possibilites, I found that : <TCP start_port="7802" /> | <TCPPING down_thread="true" initial_hosts="10.32.2.48[7800],10.32.2.48[7801],10.32.2.48[7802]" timeout="3500" up_thread="true" /> | <MERGE2 max_interval="10000" min_interval="5000"/> | <FD down_thread="true" max_tries="5" shun="true" timeout="2500" up_thread="true"/> | <VERIFY_SUSPECT down_thread="false" timeout="1500" up_thread="false"/> | <pbcast.NAKACK down_thread="true" gc_lag="100" retransmit_timeout="3000" up_thread="true"/> | <pbcast.STABLE desired_avg_gossip="20000" down_thread="false" up_thread="false"/> | <pbcast.GMS down_thread="true" join_retry_timeout="2000" join_timeout="5000" print_local_addr="false" shun="false" up_thread="true"/> | <pbcast.STATE_TRANSFER down_thread="true" up_thread="true"/> works as expected. removing attributes bind_addr from TCP and port_range from TCPPING Now I have 3 caches running on the same PC that replicate well. If someone has an explanation...... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997902#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...