A Primer on OVN


OVN is a virtual networking platform developed by the fine folks over at openvswitch.org. The project has been in the works for nearly two years now and is starting to mature to the point of being production ready. In this posting I’ll walk through the basics of configuring a simple layer-2 overlay network between 3 hosts. But first, a brief overview of how the system functions.

OVN works on the premise of a distributed control plane where components are co-located on each node in the network. The roles within OVN are:

  • OVN Central – Currently a single host supports this role and this host acts as a central point of API integration by external resources such as a cloud management platform. The central control houses the OVN northbound database, …

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