A CN2 controller communicates with CN2 vRouters using XMPP (Extensible Messaging and Presence Protocol) and with other CN2 controllers using BGP (Border Gateway Protocol). XMPP is used for control plane communication, while BGP is used for routing updates between controllers.

An OpenShift route is a way to provision external access to a service. A route exposes a service at a host name, such as that external clients can use to access the service.  A route can also specify security options, such as TLS termination, and load balancing options, such as round robin or least connection

The cloud computing feature that automatically increases or decreases the resources based on the demand is known as rapid elasticity1112. In cloud computing, scaling is the process of adding or removing compute, storage, and network services to meet the demands a workload makes for resources in order to maintain availability and performance as utilization increases11.