[ovs-discuss] Packet size can not exceed 978 bytes when ovs-dpdk user space vxlan is used

[leo zhu]

Hi Sugesh,

Thanks for your reply. I found the issue has gone in ovs 2.4.90.

Thanks.
Leo

On Thu, Oct 15, 2015 at 12:18 AM, Chandran, Sugesh <
sugesh.chandran at intel.com> wrote:

>
>
>
>
> *Regards*
>
> *_Sugesh*
>
>
>
> *From:* discuss [mailto:discuss-bounces at openvswitch.org] *On Behalf Of *leo
> zhu
> *Sent:* Wednesday, October 14, 2015 4:31 AM
> *To:* discuss at openvswitch.org
> *Subject:* [ovs-discuss] Packet size can not exceed 978 bytes when
> ovs-dpdk user space vxlan is used
>
>
>
> Hi all,
>
> I am testing the ovs-dpdk user space vxlan performance.
>
> My topology is as follow:
>
>
>
>
>
> DPDK pktgen is used to send packet in my test.
>
>
>
> In the test process, I found that the packet size can not exceed 978
> bytes. If the packet size is
>
> larger than 978 bytes, the packet that was sent by pktgen on server 3 can
> not reach to server 4,
>
> the traffic between server 3 and server 4 was blocked.
>
> >>>> Can you please confirm whats the MTU value for each interfaces??
>
> >>>>> If the MTU value is sufficient enough, can you please check the“sudo
> ovs-appctl dpctl/show –s” output to know at which interface the packets
> getting dropped
>
> Does anybody know why?
>
>
>
> Thanks.
>
> Leo
>
>
>
>
>
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