<div dir="ltr"><div><div><div>Few more findings...<br><br></div>If i switch nic model from default
<code>rtl8139</code>
to e1000 in XEN DomU config, then resulted emulated interface can successfully set MTU 9000.<br><br></div>However Xen stubdomain device model dont let to set MT > 1500 no matter it is
<code>rtl8139</code>
or e1000<br><br></div>It dont really seems openvswitch issue. <br><div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 28, 2018 at 9:52 PM, Jamshaid Faisal <span dir="ltr"><<a href="mailto:j.faisal@gmail.com" target="_blank">j.faisal@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div>Hello<br><br></div>I need to change MTU of OVS bridge to 9000. And this is only possible if all ports of OVS are mtu 9000.<br><br></div>I am using XEN (xl toolstack) which is creating emulated interface in OVS for each port it create. for example each port is added in ovs as two ports<br><br></div>ethxxxxx<br></div>ethxxxxx-emu<br><br></div>i can set the mtu for ethxxxxx but if i try to set mtu > 1500 for emulated interface ethxxxx-emu, i get the error<br><br>SIOCSIFMTU: Invalid argument<br><br></div>So it seems those emulated ports dont support MTU greater then 1500. In this case how can i switch MTU of bridge to 9000 ?<br><div><br></div><div>Thanks for any help you can provide.<br></div></div>
</blockquote></div><br></div>