Description of the connections in the network topology figure

  • The north-south traffic between the network service and the OVN external switch ext_microshift-dev is provided through the host kernel by the gateway bridge br-ex.

  • The OVN gateway router GR_microshift-dev is connected to the external network switch ext_microshift-dev through the logical router port 4. Port 4 is attached with the node IP address 192.168.122.14.

  • The join switch join connects the OVN gateway router GR_microshift-dev to the OVN cluster router ovn_cluster_router. The IP address range is 100.62.0.0/16.

    • The OVN gateway router GR_microshift-dev connects to the OVN join switch join through the logical router port 3. Port 3 attaches with the internal IP address 100.64.0.2.

    • The OVN cluster router ovn_cluster_router connects to the join switch join through the logical router port 2. Port 2 attaches with the internal IP address 100.64.0.1.

  • The OVN cluster router ovn_cluster_router connects to the node switch microshift-dev through the logical router port 1. Port 1 is attached with the OVN cluster network IP address 10.42.0.1.

  • The east-west traffic between the pods and the network service is provided by the OVN cluster router ovn_cluster_router and the node switch microshift-dev. The IP address range is 10.42.0.0/24.

  • The east-west traffic between pods is provided by the node switch microshift-dev without network address translation (NAT).

  • The north-south traffic between the pods and the external network is provided by the OVN cluster router ovn_cluster_router and the host network. This router is connected through the ovn-kubernetes management port ovn-k8s-mp0, with the IP address 10.42.0.2.

  • All the pods are connected to the OVN node switch through their interfaces.

    • In this example, Pod 1 and Pod 2 are connected to the node switch through Interface 1 and Interface 2.

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