Software-defined networks (SDN)

A unique approach to network operation, design, and management. The concept is based on the theory that the complexities of a traditional network with on-device configuration (i. e. , routers and switches) often force an organization to stick with a single device vendor, such as Cisco, and limit the flexibility of the network to changing physical and business conditions. SDN aims at separating the infrastructure layer (i. e. , hardware and hardware-based settings) from the control layer (i. e. , network services of data transmission management).

SDN is a broad and developing concept addressing the management of the various network components with the objective of providing a control plane to manage traffic on a more abstract level through direct management of network components.