Typical OVS Network Structure

OVS uses a virtual bridge to take over data of physical ports and performs flow table configuration and bridge configuration to implement end-to-end data switching. See Figure 1 and Figure 2.

The OVS cluster network topology consists of three parts, as shown in Figure 1:

• Physical nodes in a cluster can communicate with each other. OVS uses the VxLAN or GRE overlay mode to implement network plane communication between nodes.
• In a physical cluster node, OVS uses a virtual bridge to manage the container port network and its VLAN information.
• Between physical cluster nodes, different OVS components use cluster orchestration tools such as OVN to orchestrate networks and configure routing and communication.