<div dir="ltr">Hi,<br><br>I am using Openstack Wallaby release on Ubuntu 20.04.<br><div><br></div><div>I am configuring openstack neutron for production. While setting mtu I am a bit confused between the 2 use cases.</div><div> </div><div><p style="box-sizing:border-box;margin:0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif"><span style="background-color:rgb(255,255,255)"><font color="#000000"><b>Case 1</b>
External (public) network mtu 1500
self service (tenent) network geneve mtu 9000
VLAN external network mtu 1500</font></span></p><p style="box-sizing:border-box;margin:0.5em 0px 0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif"><span style="background-color:rgb(255,255,255)"><font color="#000000"><b>Case 2</b>
External (public) network mtu 9000
self service (tenent) network geneve mtu 9000
VLAN external network mtu 9000</font></span></p><p style="box-sizing:border-box;margin:0.5em 0px 0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif">I just want to know which case would be better for production.</p><p style="box-sizing:border-box;margin:0.5em 0px 0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif"><br></p><div>I would really appreciate any input in this regard.<br></div><div><br>Thank you.<br><br>Regards,<br>Malik Obaid</div><p style="box-sizing:border-box;margin:0.5em 0px 0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif">

</p><p style="box-sizing:border-box;margin:0.5em 0px 0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif"><br></p><p style="box-sizing:border-box;margin:0.5em 0px 0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif"><span style="background-color:rgb(255,255,255)"><font color="#000000"><br></font></span></p><p style="box-sizing:border-box;margin:0.5em 0px 0px;font-size:13.5px;line-height:1.6em;white-space:pre-wrap;width:1024px;word-break:break-word;font-family:"Open Sans",sans-serif"><span style="background-color:rgb(255,255,255)"><font color="#000000"><br></font></span></p></div></div>