Hi Glenn, This could be a bug. Please send more information: - Please send the contents of your "IPFIX" and "Bridge" tables, by running "ovs-vsctl list ipfix" and "ovs-vsctl list bridge". Especially, I'm curious about the "ipfix", "controller", and "fail_mode" columns. - Do you have flows in your OpenFlow tables and in the datapath? "ovs-dpctl dump-flows" - What condition triggers the problem?
My understanding from your message is that removing a primary controller makes IPFIX stop working. >From the OVS documentation: " If there are primary controllers, removing all >of them clears the flow table." If there are no flows, it would be logical that nothing gets sampled by IPFIX, especially if the bridge is in "secure" fail mode. I'll know more with the information above. Thanks, -- Romain Lenglet ----- Original Message ----- > From: "Glenn McGuire" <gle...@a-bb.net> > To: discuss@openvswitch.org > Sent: Tuesday, September 3, 2013 11:43:22 AM > Subject: [ovs-discuss] IPFIX stops sending > I've been trying to work with the IPFIX support in recent versions of > Openvswitch, and have run across the following behavior: > When I configure an OpenFlow controller, the IPFIX messages stop being sent. > On my most recent install (Ubuntu 12.x / 3.5.0-23 and ovs 2.0.0 presumably > compiled with the system default compiler - gcc 4.6.3) > IPFIX messages continue as soon as I delete the controller configuration > (with ovs-vsctl del-controller) > This includes sending a new set of templates, which makes sense since there > is a timeout check in the send routine. > (My previous install was on a CentOS host in usermode and had some stability > issues that hid this behavior behind lockups and the occasional crash) > My first suspect from glancing through the code is that it's hanging on a > mutex, but a cursory inspection of the code shows consistent mutex use. > Has anyone seen this? > Do other folks use IPFIX with a controller? > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss
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