<jgroups>
  <!-- Uses TCPPING instead of MPING for discovery. -->
   <stack name="relay-global" extends="tcp">
     <MPING stack.combine="REMOVE"/>
     <TCPPING initial_hosts="192.0.2.0[7800]"
              stack.combine="INSERT_AFTER"
              stack.position="TCP"/>
   </stack>
   <!-- Extends the default UDP stack with RELAY2. -->
   <!-- Specifies RELAY2 properties. -->
   <stack name="xsite" extends="udp">
      <relay.RELAY2 site="LON" xmlns="urn:org:jgroups"
                    max_site_masters="10"
                    can_become_site_master="true"/>
      <remote-sites default-stack="relay-global">
         <remote-site name="LON"/>
         <remote-site name="NYC"/>
      </remote-sites>
   </stack>
</jgroups>
