As described in the Architecture section, a service like Nova must be made aware of Quantum such that a Quantum Plugin can associate an attachment-id passed in via the Quantum API with a port on a vswitch or physical switch managed by the plugin.
In Nova, this is done by specifying that the nova-compute service use a type of ''vif-plugging'' that is compatible with your Quantum plugin. A Quantum plugin's documentation should specify the nova-compute options it requires for vif-plugging. Usually this will include setting the vif-driver option for your virt-layer (e.g., ''libvirt_vif_driver'' or ''xenapi_vif_driver'') to point to a vif-driver class that is specified in your plugin documentation. Depending on the vif-driver selected, the plugin documentation may require that additional configuration options are set as well (e.g., ''libvirt_vif_type'').
