Cloned from launchpad blueprint https://blueprints.launchpad.net/neutron/+spec/ml2-hierarchical-port-binding.
Support hierarchical network topologies by binding ports to ML2 mechanism drivers and network segments at each necessary level of the hierarchy. For example, one mechanism driver might bind to a static VXLAN segment of the network, causing a ToR switch to expose that network as a dynamically allocated VLAN to the compute node(s) connected to that switch, while a second mechanism driver, such as OVS, would bind the compute node to that VLAN.
Specification URL (additional information):
This RFE was automatically opened to track status of upstream development. At this point we see no reason to keep track of this in Red Hat bugzilla, thus closing it.