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

Vladislav Odintsov odivlad at gmail.com
Mon Nov 8 21:57:11 UTC 2021


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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