I don't think it should listen on all interfaces, only on private interconnect, as defined in cluster.conf tcp 0 0 0.0.0.0:7777 0.0.0.0:* LISTEN tcp 0 0 10.0.0.1:7777 10.0.0.2:32777 ESTABLISHED cat /etc/ocfs2/cluster.conf node: ip_port = 7777 ip_address = 10.0.0.1 number = 0 name = node1-cluster1 cluster = ocfs2 node: ip_port = 7777 ip_address = 10.0.0.2 number = 1 name = node2-cluster1 cluster = ocfs2 cluster: node_count = 2 name = ocfs2 SPident CONCLUSION: System is up-to-date! found SLES-9-i386-SP3 + "online updates" OCFS2 1.1.7