gistfile1.xml

            <broadcast-groups>
              <broadcast-group name="bg-group2">
                <jgroups-stack>${jgroups.stack:tcp}</jgroups-stack>
                <jgroups-channel>${jgroups.channel:hq-cluster}</jgroups-channel>
                <broadcast-period>2000</broadcast-period>
                <connector-ref>netty</connector-ref>
              </broadcast-group>
            </broadcast-groups>

            <discovery-groups>
              <!-- For JGroups -->
              <discovery-group name="dg-group2">
                <jgroups-stack>${jgroups.stack:tcp}</jgroups-stack>
                <jgroups-channel>${jgroups.channel:hq-cluster}</jgroups-channel>
                <refresh-timeout>10000</refresh-timeout>
              </discovery-group>
            </discovery-groups>