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 of a new generation of computer networks. In this context, software-defined network has recently emerged as one of the most recognizable solutions 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, one of the main challenges that facing the SDNs is the fault tolerance and resilience. Although there are a numerous of studies that have discussed this issue, 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 issue of routing changes, which is important for utilising the optimal paths after failure repair. 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.

Smart routing: Towards proactive fault handling of software-defined networks

“…The recovery from link failure procedure is demonstrated in line (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). However, the algorithm also includes the reversion procedure that is activated after a failure recurs (line [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] and it is no less important than the recovery process [44]. This procedure is required to take into account the percentage of routing flaps that is necessary for the experimental analysis.…”