OVN provides virtual networking for Open vSwitch and is a component of the Open vSwitch project. This project provides integration between OpenStack Neutron and OVN.

• Free software: Apache license
• Source: http://git.openstack.org/cgit/openstack/networking-ovn
• Bugs: http://bugs.launchpad.net/networking-ovn
• Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
• IRC: #openstack-neutron-ovn on Freenode.
• Docs: http://docs.openstack.org/developer/networking-ovn/

The original OVN project announcement can be found here:

• http://networkheresy.com/2015/01/13/ovn-bringing-native-virtual-networking-to-ovs/

OVN's architecture is described here:

• http://benpfaff.org/~blp/dist-docs/ovn-architecture.7.html