Towards Filling the Gap of Routing Changes in Software-Defined Networks

Abstract

The inflexibility and rigidity of the current networking systems in light of the growing number of computing devices that connected to the Internet has led to the need for new generation of computer networks. In this context, software-defined network (SDN) has recently emerged as a promising paradigm to facilitate the network management and decrease the complexity through detaching the control layer from network appliances. Since, each new technology accompanied with new issues and concerns, fault tolerance is one of the main challenges facing the SDNs. Although there are numerous of studies that have discussed the issue of failure recovery, the after failure repair scenario is remained unclear and have not addressed well yet. For this reason, we specify this paper as a step forward to address the reversion issue, which is important for utilising the ideal paths after the failure is fully repaired. We produced a new network model as well as a compatible framework with SDN architecture to fulfill the routing changes activity. The consequence is estimated based on an analytical model and finally, a case study example is provided in order to conceptualise the concept.