Hi Pavel, Would you mind to share the list of ovn devices you have. Currently in UI, I don't have any network (except ovirtmgmt) and I see multiplee devices. My guess is that I should remove all but the br-int , but I would like not to kill my cluster communication :) Best Regards, Strahil NikolovOn Dec 11, 2019 10:25, Pavel Nakonechnyi <pavel@gremwell.com> wrote:

Hi Strahil,

On Tuesday, 10 December 2019 20:50:27 CET Strahil wrote:

...

Hi Pavel,

Can you explain how did you find the issue.

I'm new in OVN and I experience the same symptoms .

I'm not sure what will be the best approach to start cleanly with OVN.

I am new to OVN / OpenVSwitch too. :)

What helped me to begin with is capturing traffic on "ovirtmgmnt" interface using tcpdump and looking into it for packets related to data exchange between VMs over virtual network. I found communications over UDP:6081, which were fine by themselves. However, this helped to craft more targeted search requests which lead me to this discussion: https://lists.ovirt.org/archives/list/users@ovirt.org/thread/PVJJPK7MQOFLXJE...

Some suggestions there were helpful to at least become slightly more familiar with how the things work.

Anyway, lack of documentation on this matter (I know that there are high-level old docs) does not help to resolve such cases.