On 06/12/2014 08:32 AM, Schaefer, Micah wrote: > Yesterday I added bonds on nodes 3 and 4. Today, node4 was active and > fenced, then node3 was fenced when node4 came back online. The network > topology is as follows: > switch1: node1, node3 (two connections) > switch2: node2, node4 (two connections) > switch1 <―> switch2 > All on the same subnet > > I set up monitoring at 100 millisecond of the nics in active-backup mode, > and saw no messages about link problems before the fence. > > I see multicast between the servers using tcpdump. > > Any more ideas? spanning-tree scans/rebuilds happen on 10Gb circuits just like they do on 1Gb circuits, and when they happen, traffic on the switches *can* come to a grinding halt, depending upon the switch firmware and the type of spanning-tree scan/rebuild being done. you may want to check your switch logs to see if any spanning-tree rebuilds were being done at the time of the fence. just an idea, and hth yvette hirth -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
