<infinispan>
   <jgroups>
      <stack name="bridge" extends="tcp">
         <TCP bind_port="7900"/>
         <TCPPING initial_hosts="127.0.0.1[7900]"
                  stack.combine="REPLACE"
                  stack.position="MPING"/>
      </stack>
      <stack name="xsite" extends="udp">
         <relay.RELAY2 site="LON"
                       max_site_masters="1000"/>
         <remote-sites default-stack="bridge">
            <remote-site name="LON"/>
            <remote-site name="NYC"/>
         </remote-sites>
      </stack>
   </jgroups>
   <cache-container>
      <transport stack="xsite"/>
      <replicated-cache name="customers">
         <backups>
            <backup site="NYC"
                    strategy="ASYNC"/>
         </backups>
      </replicated-cache>
   </cache-container>
</infinispan>