<div dir="ltr">This uses VLANs in the examples, but everything should still generally apply to your question:<div><br></div><div><a href="http://masimum.inf.um.es/fjrm/2013/12/26/the-journey-of-a-packet-within-an-openstack-cloud/">http://masimum.inf.um.es/fjrm/2013/12/26/the-journey-of-a-packet-within-an-openstack-cloud/</a><br></div><div><br></div><div>Basically the TAP interface attaches to the qvb interface which links it to a veth pair (qvr and qvo) with qvo attached to the integration bridge (br-int) which then goes to patch-tun and into br-tun. Fun right? ;).</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 19, 2014 at 10:12 AM, Stinner, Thomas <span dir="ltr"><<a href="mailto:Thomas.Stinner@schweickertgruppe.de" target="_blank">Thomas.Stinner@schweickertgruppe.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
i would like to understand how Neutron is configuring OpenVswitch when using ML2.<br>
<br>
For example, on one of the compute nodes I have a VM that is called host-vxlan2. Instance name is instance-00000e7.<br>
<br>
This VM has the following network interface:<br>
<br>
<interface type='bridge'><br>
      <mac address='fa:16:3e:d7:d7:13'/><br>
      <source bridge='qbrea4f9446-76'/><br>
      <target dev='tapea4f9446-76'/><br>
      <model type='virtio'/><br>
      <alias name='net0'/><br>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/><br>
    </interface><br>
<br>
The bridge has two interfaces, a tap device that is connected to the vm and another interface.<br>
<br>
qbrea4f9446-76          8000.6683237a7c4d       no              qvbea4f9446-76<br>
                                                                               tapea4f9446-76<br>
<br>
OVs has three bridges - br-ex, br-int, br-tun.<br>
<br>
However, none of these bridges contain qbrea4f9446-76 or qvbea4f9446-76. But they contain a Port "qvoea4f9446-76" (similar name!).<br>
<br>
Which command defines the connection between "qvoea4f9446-76" and "qbrea4f9446-76"?<br>
<br>
Thanks in advance<br>
Thomas<br>
<br>
<br>
_______________________________________________<br>
Mailing list: <a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack</a><br>
Post to     : <a href="mailto:openstack@lists.openstack.org">openstack@lists.openstack.org</a><br>
Unsubscribe : <a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack</a><br>
</blockquote></div><br></div>