Implementing OpenFlow-based resilient network services

In the OpenFlow framework, packet forwarding (data plane) and routing decisions (control plane) run on different devices. OpenFlow switches are in charge of packet forwarding, whereas a controller runs applications which decide how the packet should be handled. OpenFlow standardizes this control protocol, leaving the space for any controller implementation. In this paper we present how we developed a traffic engineering application in a multi-WAN use case with a software development approach.