The Modular Layer 2 plugin allows OpenStack Networking to simultaneously utilize the variety of layer 2 networking technologies found in complex real-world data centers. It currently includes drivers for the local, flat, vlan, gre and vxlan network types and works with the existing Open vSwitch, Linux Bridge, and HyperV L2 agents. The ML2 plug-in can be extended through mechanism drivers, multiple mechanisms can be used simultaneously. This section describes different ML2 plug-in / agents configurations with different type drivers and mechanism drivers.
