Vincent, On Thu, Feb 26, 2009 at 17:39, Vincent VIAL <vincent@xxxxxxx> wrote: > I checked what you suggested but according to cman man page, broadcast is > used by default and multicast is only used if a multicast parameter is given > in the cluster.conf file. I'm not sure but I believe that now the default is multicast. And if so, the problem can be in the switch not letting igmp version packages pass through. I had this problem when deploying a RHEL5 cluster in a environment using Cisco switches. Since I didn't have access to the switches configuration, the workaround was to force my Linux boxes speaks igmp version 2. You can try this on your boxes. Edit /etc/sysctl.conf e put a line like this: net.ipv4.conf.all.force_igmp_version = 2 And issue a "sysctl -p" or reboot your boxes. -- Antonio Dias -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
