Distributed virtual routing (DVR) isolates the failure domain of the control plane and optimizes network traffic by using layer 3 high availability (L3 HA) and scheduling routers on every Compute node.

DVR has these characteristics:

• East-West traffic is routed directly on the Compute nodes in a distributed fashion.
• North-South traffic that uses floating IP addresses is distributed and routed on the Compute nodes. This requires the external network to be connected to every Compute node.
• North-South traffic without floating IP addresses (SNAT traffic) is not distributed.
• The OVN metadata agent is distributed and deployed on all Compute nodes. The metadata proxy service is hosted on all the distributed routers.