Dear ALL: Hello, I hope I'm sending to the correct list. I'm having problems starting up gfs 6.1, and hopefully it's just something incorrect with my configuration. I used two standard machine . My system is Fedora Core 4. The kernel modules load fine. root # modprobe lock_dlm first node: root # ccsd root # cman_tool join second node: root # ccsd root # cman_tool join when we are going to start both nodes we get that the first node without problems, but the second one never get connected at cman and remain trying to connect with the following error: udp port 6809 unreachable. Then, I run cman_tool with DEBUG defined and get this: first node: sending HELLO second node: sending membership request, but I get udp port 6809 unreachable. My configuration file is <?xml version="1.0"?> <cluster name="alpha" config_version="1"> <cman two_node="1" expected_votes="1"> <multicast addr="224.0.0.1"/> </cman> <clusternodes> <clusternode name="node1" nodeid="1" votes="1"> <multicast addr="224.0.0.1" interface="eth1"/> <fence> <method name="human"> <device name="net_dev1"/> </method> </fence> </clusternode> <clusternode name="node2" nodeid="2" votes="1"> <multicast addr="224.0.0.1" interface="eth0"/> <fence> <method name="human"> <device name="net_dev2"/> </method> </fence> </clusternode> </clusternodes> <fencedevices> <fencedevice name="net_dev1" agent="fence_gnbd" server="node1" login="root" passwd="111111"/> <fencedevice name="net_dev2" agent="fence_gnbd" server="node2" login="root" passwd="111111"/> </fencedevices> </cluster> any help is much appreciated. Rregards, thomasie --http://www.eyou.com --Îȶ¨¿É¿¿µÄµç×ÓÐÅÏä ÓïÒôÓʼþ Òƶ¯ÊéÇ© ÈÕÀú·þÎñ ÍøÂç´æ´¢...ÒÚÓÊδ¾¡ --http://vip.eyou.com --¿ì¿ìµÇ¼ÒÚÓÊVIPÐÅÏä ×¢²áÄúÖÐÒâµÄÓû§Ãû --http://sms.eyou.com --ÎÞÓǶþ¶þ×å¡¢×ãÇò´ó¸»ÎÌ...¾¡ÔÚÒÚÓʶÌÐÅ -- Linux-cluster@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/linux-cluster