Re: [Openstack] periodic packet loss in openvswitch

2014-10-15 Thread Rick Jones
On 10/14/2014 09:10 PM, Michael Gale wrote: I have seen something similar in the past under two conditions: 1. When a switch buffers have been overloaded due to excessive UDP traffic, the switch ended up sending out the data on all ports. Do you mean when a switch's forwarding table fills beca

Re: [Openstack] periodic packet loss in openvswitch

2014-10-14 Thread Michael Gale
Hello, Do you know the L2 switch model you are using in the blade center and how much traffic you are pushing through? If you have netflow or some other type of traffic analysis I would look for changes and sudden increases around this time: - difference in packets per second - difference in

Re: [Openstack] periodic packet loss in openvswitch

2014-10-14 Thread Don Waterloo
On 14 October 2014 22:45, Don Waterloo wrote: > I have a system w/ 6 blades interconnected on L2. 1 controller, 5 > compute/network nodes. > they are using icehouse, neutron, ovs, with vxlan on ubuntu 14.04. > > Once in a while, one of the compute blades will declare a bunch of lines > like this

[Openstack] periodic packet loss in openvswitch

2014-10-14 Thread Don Waterloo
I have a system w/ 6 blades interconnected on L2. 1 controller, 5 compute/network nodes. they are using icehouse, neutron, ovs, with vxlan on ubuntu 14.04. Once in a while, one of the compute blades will declare a bunch of lines like this: 129749.691102] qbrfc96cb3f-f3: received packet on qvbfc9