[ovs-discuss] Issue when using local_ip with VXLAN tunnels in OVS

Siva Teja ARETI siva_teja.areti at nuagenetworks.net
Thu Nov 8 23:48:37 UTC 2018


On Thu, Nov 8, 2018 at 6:30 PM Gregory Rose <gvrose8192 at gmail.com> wrote:

> On 11/7/2018 4:14 PM, Siva Teja ARETI wrote:
>
>
>
> On Wed, Nov 7, 2018 at 6:43 PM Gregory Rose <gvrose8192 at gmail.com> wrote:
>
>> On 11/6/2018 3:17 PM, Gregory Rose wrote:
>> >
>> > I see.  It appears you are right and I misread the documentation. OK,
>> > l'll investigate further then.
>> >
>> > - Greg
>> >
>> >
>>
>> Siva,
>>
>> I am still looking into this but wanted to update you on my status.
>>
>> I am seeing problems with the vxlan local_ip option myself.  Either I
>> don't actually understand the docs
>> and examples I've looked at or else there is a real bug but given the
>> reports from  you and Marcus (in
>> the email thread you first referenced) I think there must be some issue.
>>
>> Flavio mentioned that it might be an MTU issue but the testing I'm doing
>> would not be affected by
>> the MTU so I think there is something else.
>>
>> Hopefully I can make some progress on this soon - I'll let you know.
>>
>> Thanks,
>>
>> - Greg
>>
>>
> Thanks for the update.
>
>
> Siva,
>
> When you see the error condition with the local_ip option on vxlan can you
> provide me the output of
> this command?
>
> *# ip -s link show vxlan_sys_4789*
> 70: vxlan_sys_4789: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65470 qdisc
> noqueue master ovs-system state UNKNOWN mode DEFAULT group default qlen 1000
>     link/ether 0e:9b:58:4a:6e:44 brd ff:ff:ff:ff:ff:ff
>     RX: bytes  packets  errors  dropped overrun mcast
>     0          0        0       0       0       0
>     TX: bytes  packets  errors  dropped carrier collsns
>     0          0        99      8       99      0
>
> Hi Greg,

Here is the output.

[root at vm1 ~]# ip -s link show vxlan_sys_4789
27: vxlan_sys_4789: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65000 qdisc
noqueue master ovs-system state UNKNOWN mode DEFAULT qlen 1000
    link/ether ca:8f:0d:13:08:1f brd ff:ff:ff:ff:ff:ff
    RX: bytes  packets  errors  dropped overrun mcast
    0          0        0       0       0       0
    TX: bytes  packets  errors  dropped carrier collsns
    3666796    130957   0       0       0       0

 Siva Teja.

> It will help me understand which error you're encountering.
>
> Thanks!
>
> - Greg
>
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