[ovs-discuss] Ubuntu 14.04 unable to ping through vxlan tunnel

[Jesse Gross]

On Tue, Feb 10, 2015 at 11:35 AM, Spandan Bemby <spandan.777 at gmail.com> wrote:
> I am unable to ping through a vxlan link in Open vSwitch (OVS) when the
> frame size is too big. It seems ovs doesn’t fragment big frames when sending
> then through the vxlan tunnel. Pinging worked in Ubuntu12.04
> (3.2.0-61-virtual) works; this problem only appeared in Ubuntu14.04 (kernel:
> 3.13.0-39-generic ). Is this known issue? Does a solution exist?

Yes, it is necessary to set the MTU properly to account for the tunnel overhead.