[ovs-dev] [ovn] chassis with VXLAN breaks setup which is using OVN-IC

Numan Siddique numans at ovn.org
Mon Nov 8 22:05:56 UTC 2021

+ Ihar  if he has any comments.


On Mon, Nov 8, 2021 at 4:57 PM Vladislav Odintsov <odivlad at gmail.com> wrote:
> Hi,
> is seems like I found a regression with a latest ovn main branch code using ovn-ic.
> My setup utilises ramp switches (ovn-controller-vtep), so some chassis have vxlan encap.
> But I guess the problem affects non-vtep switch VXLAN installations too.
> OVN IC transit switches use tunnel key ids > OVN_MAX_DP_KEY_LOCAL (OVN_MAX_DP_KEY - OVN_MAX_DP_GLOBAL_NUM)
> so if user has at least one VXLAN-enabled chassis and interconnected
> with transit switch LRs he/she will get in northd logs lots of next messages:
> 2021-11-08T21:03:32.606Z|00132|northd|WARN|Tunnel key 16711897 for datapath vpc-6A0E5C34-global is incompatible with VXLAN
> 2021-11-08T21:04:32.607Z|00133|northd|WARN|Dropped 27 log messages in last 60 seconds (most recently, 31 seconds ago) due to excessive rate
> In commit [1] this logic was introduced. I can’t understand from the code and from commit itself
> if previous behaviour can be supported, but maybe I’m missing something.
> Can somebody help on this please?
> Thanks.
> 1: https://github.com/ovn-org/ovn/commit/fd44d75959cedcedf1f103173be1d9fa1abd9cb8
> Regards,
> Vladislav Odintsov
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