Open Virtual Network

OVN (Open Virtual Network) is a series of daemons for the Open vSwitch that translate virtual network configurations into OpenFlow. OVN is licensed under the open source Apache 2 license.

OVN provides a higher-layer of abstraction than Open vSwitch, working with logical routers and logical switches, rather than flows. OVN is intended to be used by cloud management software (CMS). For details about the architecture of OVN, see the ovn-architecture manpage. Some high-level features offered by OVN include:

  • Distributed virtual routers
  • Distributed logical switches
  • Access Control Lists
  • DHCP
  • DNS server

Like Open vSwitch, OVN is written in platform-independent C. OVN runs entirely in userspace and therefore requires no kernel modules to be installed.

Latest Release

Download the latest release of OVN on the releases page on the left. For a summary of changes in the latest release, see here.

Distribution documentation (aka man pages) is available here.

IRC meetings

We have weekly IRC meetings you can participate in:

OVN weekly IRC meeting every Thu 09:15 AM US Pacific (e.g., Los Angeles, California time) in #openvswitch on

OVN code used to live within the Open vSwitch codebase. It was split into its own repo in 2019.