[ovs-discuss] [ovn] help with creating logical topology with l3 gateway

Moshe Levi moshele at nvidia.com
Thu Mar 25 21:50:37 UTC 2021



> -----Original Message-----
> From: Dumitru Ceara <dceara at redhat.com>
> Sent: Thursday, March 25, 2021 1:44 PM
> To: Moshe Levi <moshele at nvidia.com>; ovs-discuss at openvswitch.org
> Subject: Re: [ovs-discuss] [ovn] help with creating logical topology with l3
> gateway
> 
> External email: Use caution opening links or attachments
> 
> 
> On 3/25/21 12:40 PM, Dumitru Ceara wrote:
> >> Also, to see exactly where the packet is dropped, please share the
> >> output of:
> >>
> >> inport=$(ovs-vsctl --bare --columns ofport list interface vm1)
> >>
> flow=40440000000340440000000108004500005417cd40004001b3980a00010264
> 40
> >>
> 00020800e1d35d0a0001c1635c6000000000d78905000000000010111213141516
> 171
> >> 8191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f3031323334353637
> > To "demystify" this a bit, I got the packet contents by running the
> > following command while ping was running from vm1:
> >
> > ip netns exec vm1 tcpdump -vvvnne -i vm1 -c1 -XX | ovs-tcpundump
> >
> >> ovs-appctl ofproto/trace br-int in_port=$in_port $flow | ovn-detrace
> 
> And here's a typo, sorry, should be:
> 
> ovs-appctl ofproto/trace br-int in_port=$inport $flow | ovn-detrace
Here is the output [1] https://pastebin.ubuntu.com/p/jDYz9Dfy2t/

OVN 21.03 -> commit da028c72bdc7742b3065d1df95a3789fbc16b27a
OVS 2.15 -> commit d5dc16670ec95702058fccad253ed6d24ebd5329



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