Open Stack

Hi,

i would like to understand how Neutron is configuring OpenVswitch when using ML2.

For example, on one of the compute nodes I have a VM that is called host-vxlan2. Instance name is instance-00000e7.

This VM has the following network interface:

<interface type='bridge'>
      <mac address='fa:16:3e:d7:d7:13'/>
      <source bridge='qbrea4f9446-76'/>
      <target dev='tapea4f9446-76'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>

The bridge has two interfaces, a tap device that is connected to the vm and another interface.

qbrea4f9446-76          8000.6683237a7c4d       no              qvbea4f9446-76
		                                                               tapea4f9446-76

OVs has three bridges - br-ex, br-int, br-tun. 

However, none of these bridges contain qbrea4f9446-76 or qvbea4f9446-76. But they contain a Port "qvoea4f9446-76" (similar name!). 

Which command defines the connection between "qvoea4f9446-76" and "qbrea4f9446-76"?

Thanks in advance
Thomas