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<p class="MsoNormal">Hi list,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have learned that we can configure instances to work with different MTU size, such as<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Configure /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">veth_mtu = ${your_MTU}<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Configure /etc/nova/nova.conf<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">network_device_mtu= ${your_MTU}<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Configure /etc/neutron/</span>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">dhcp_agent.ini<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">dnsmasq_config_file = /etc/neutron/dnsmasq-neutron.conf<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">And add to /etc/neutron/dnsmasq-neutron.conf:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">dhcp-option-force=26,${your_MTU}<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But, for neutron-dhcp-agent and neutron-l3-agent, all virtual ports created are still have MTU=1500.<o:p></o:p></p>
<p class="MsoNormal">Are there any configuration for these two component that can let us also change these virtual ports’ MTU?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks.<o:p></o:p></p>
<p class="MsoNormal">-chen<o:p></o:p></p>
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