Software-Defined Networking

This paper reviews the state of the art of SDN approaches applied to mission-critical applications.

It is discussed how the OpenFlow protocol allows an external controller to configure redundant paths between dual-homed devices.

An integration of HSR and OpenFlow technologies is proposed to provide redundancy control and traffic prioritization.

We present a combination of the Software-Defined Networking (SDN) approach and PRP topologies to establish a higher level of redundancy.

We describe the IEC 61850 communication model and provide an SDN-based framework. This framework mainly uses the OpenFlow, sFlow, and OVSDB protocols. It controls an IEC 61850 network, including resource analysis and management. It integrates traffic engineering techniques, such as QoS or traffic filtering.