As mentioned earlier, the OpenStack Networking functionalities can be classified as core and service. Routing or L3 networking is part of the service functionality and Neutron needs to be configured in order to support it.
We will configure the Neutron server as well as the Neutron L3 agent in order to enable the Routing functionality in OpenStack. For this chapter, we will assume that the Neutron ML2 plugin has been configured to use VLAN as the type driver and Open vSwitch as the mechanism driver.
The following steps will show you how to configure Neutron to provide Routing services in OpenStack: