On Thu, Jul 3, 2014 at 10:34 PM, Bannai, Vinay <vban...@paypal.com> wrote: > Hello Jesse, > > We are running a large Openstack deployment with several hundred > hypervisors running Openstack Havana with OVS. There are currently around > several thousand VM's running in this environment. > Here are the details: > > root@pxxx:~# ovs-vsctl --version > ovs-vsctl (Open vSwitch) 2.0.1.32944 > Compiled Jan 28 2014 23:52:12 > root@xxx:~# > > Some of the VM's are not reachable. When we further debugged the VM and > the hypervisor it is running on, we seeing the following messages in > ovs-vswitchd.log
Can you try the debugging steps that I mentioned in the previous message (this patch is now merged into master)? > When we try to do ovs-dpctl dump-flows and grep for the MAC address > associated with the VMs, we see the flow has action set to drop. > Tcpdump on the tap interface of the VM' shows that it is sending DHCP > packets but the ovs bridge is dropping the flow. This is likely separate because the userspace is calculating the action to be drop, that's not a kernel communication issue. Are you sure that this is incorrect, though? These are all IPv6 neighbor discovery packets maybe they are being dropped by some rule. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
