Red Hat Summit6.4.2. Network requirements
The chosen network topology must yield direct IP connectivity between nodes. The minimum effective MTU across the infrastructure should be the maximum MTU used for the deployment. Using a lower MTU is acceptable.
For more information, see Understanding and Validating MTU setting with OpenShift Container Platform 4.x. The latency needs are ultimately defined by the services that use the network. See the sections related to etcd and storage for more details on requirements.
In addition to the base networking requirements, you need to think about how applications will be accessed. A top-level Global Service Load Balancing (GSLB) method will be needed outside of OpenShift Container Platform to enable external traffic to connect to the OpenShift Container Platform control plane services and ingress controllers.
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