A cost‐effective and load‐balanced controller placement method in software‐defined networks

Mili Dhar, Bidyut K. Bhattacharyya, Mrinal Kanti Debbarma and Swapan Debbarma

International Journal of Network Management, 2022, vol. 32, issue 5

Abstract: A network incorporates nodes, and each node can communicate with each other through some links. An efficient way to maintain the communication between nodes is to divide a network into several subnetworks, called clusters. We have developed a new clustering algorithm and applied our method for the controller placement in software‐defined networks (SDNs). Placing a controller in its appropriate location by balancing the loads and optimizing the latency even in case of a failure scenario becomes a challenging task. Thus, we have proposed a multi‐controller placement algorithm that can minimize the average (Sw‐Co) latency in such a way that the network switches are fairly distributed over clusters. This distribution helps to balance loads of switches among controllers even in the case of a controller failure scenario. We have also simulated three other existing algorithms for comparison. Experiment results show that our algorithm is a cost‐effective solution as compared with other existing algorithms. We have also shown that our proposed method balanced loads of switches between controllers in a SDN network and generates lower average (Sw‐Co) latency with and without a controller failure.

Date: 2022
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https://doi.org/10.1002/nem.2199

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Persistent link: https://EconPapers.repec.org/RePEc:wly:intnem:v:32:y:2022:i:5:n:e2199

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