OpenShift Container Platform 4.2 introduces a powerful feature—support for multiple networks pods. OpenShift Container Platform 4.2 comes with a default network. You can define additional networks using the Multus CNI plug-in and then chain the plug-ins. These additional networks are useful for increasing the networking capacity requirement of the pods and when traffic separation requirements arise because of security concerns or network routing requirements.
The following CNI plug-ins are available for creating additional networks in OpenShift Container Platform 4.2:
When pods are provisioned with additional network interfaces based on macvlan or ipvlan, corresponding leaf switch ports must match the VLAN configuration of the host. A matching failure results in the loss of traffic.