[ovs-dev] OvS 2.10 MTU greater than 1518 - not working

Shahaji Bhosle shahaji.bhosle at broadcom.com
Wed Oct 17 20:04:54 UTC 2018


Thanks Ben/Ilya,
Will give that a shot and update, I had to roll back to 2.9. But will
update. Thanks again and appreciate the quick reply, Shahaji

On Wed, Oct 17, 2018 at 11:35 AM Ben Pfaff <blp at ovn.org> wrote:

> On Tue, Oct 16, 2018 at 06:46:52PM -0400, Shahaji Bhosle via dev wrote:
> > Just upgraded to 2.10 and running OvS with DPDK , I used to set MTU to
> 1900
> > to accommodate VxLAN headers in 2.9 but not I cannot send packets bigger
> > than 1518 bytes. Is this a known issue, I have not got chance to check
> the
> > code, but wanted to check if you know anything
>
> Make sure you adjusted the MTU of both bridges involved.  The bridge
> with VXLAN ports should have an MTU smaller than the bridge with the
> physical port, by the size of the VXLAN header.
>


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