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A Comparative Study on Load Balancing Techniques in Software Defined Networks


Affiliations
1 Department of Computer Science and Information Technology, Patuakhali Science and Technology University, Bangladesh
2 Department of Computer and Communication Engineering, Patuakhali Science and Technology University, Bangladesh
3 Department of Computer Science, University of Western Ontario, Canada
 

Software-defined networking (SDN), which decouples the control plane from data plane and provides programmability to design the network, has been considered as a viable paradigm shift to ease the management of conventional networks. Studies have identified that the placement of controllers heavily impacts network performance in SDN. Many studies proposed methods regarding controller’s placement in the network to improve the performance metrics such as propagation latency, distribution of load, failure resilience, and reliability of network. However, network operators' main concern is always Quality of Service (QoS) when placing SDN controllers. Because SDN controllers are responsible for providing services to the switches, controller response time is a critical QoS criterion for network operators. In this study two different approaches of controller placement were thoroughly examined and combined to offer a solution that minimizes the propagation delay among nodes and maximizes the QoS of the network by maintaining better load balancing.



Keywords

Software Defined Networks, Controller Placement, QoS, Load-Balance, Propagation Delay.
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  • A Comparative Study on Load Balancing Techniques in Software Defined Networks

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Authors

Moinul Islam Sayed
Department of Computer Science and Information Technology, Patuakhali Science and Technology University, Bangladesh
Sajal Saha
Department of Computer and Communication Engineering, Patuakhali Science and Technology University, Bangladesh
Ibrahim Mohammed Sayem
Department of Computer Science, University of Western Ontario, Canada
Sarna Majumder
Department of Computer and Communication Engineering, Patuakhali Science and Technology University, Bangladesh

Abstract


Software-defined networking (SDN), which decouples the control plane from data plane and provides programmability to design the network, has been considered as a viable paradigm shift to ease the management of conventional networks. Studies have identified that the placement of controllers heavily impacts network performance in SDN. Many studies proposed methods regarding controller’s placement in the network to improve the performance metrics such as propagation latency, distribution of load, failure resilience, and reliability of network. However, network operators' main concern is always Quality of Service (QoS) when placing SDN controllers. Because SDN controllers are responsible for providing services to the switches, controller response time is a critical QoS criterion for network operators. In this study two different approaches of controller placement were thoroughly examined and combined to offer a solution that minimizes the propagation delay among nodes and maximizes the QoS of the network by maintaining better load balancing.



Keywords


Software Defined Networks, Controller Placement, QoS, Load-Balance, Propagation Delay.

References