text: The default OpenShift SDN solution is built on Open vSwitch (OVS). With OpenShift, the 
  cluster administrator can choose to deploy with one of the OpenShift native SDN plug-ins or 
  deploy the cluster by using a third-party SDN from the supported system. 
  
  If a different SDN is wanted, OpenShift supports Kubernetes CNI-compliant SDN solutions. 
  
  **4.2.2 OpenShift internal cluster communication**
  
  OpenShift container Platform uses a software-defined networking approach to provide a 
  unified cluster network that assigns an internal IP address to each pod in the cluster to ensure 
  that all containers within the pod behave as though they were on the same host. In terms of 
  port allocation, networking, naming, load balancing, and application configuration are the 
  same as though they were physical hosts or virtual machines. 
  
  This pod network is established and maintained by the OpenShift SDN, which configures an 
  overlay network by using Open vSwitch (OVS). 