Mitigating the controller performance bottlenecks in Software Defined Networks

Cosmin Marius Caba, José Soler

Research output: Contribution to journalJournal articleResearchpeer-review


The centralization of the control plane decision logic in Software Defined Networking (SDN) has raised concerns regarding the performance of the SDN Controller (SDNC) when the network scales up. A number of solutions have been proposed in the literature to address these concerns. This paper proposes a new approach for addressing the performance bottlenecks that arise from limited computational resources at the SDNC. The proposed approach is based on optimally configuring the operating parameters of the components residing inside the SDNC (network control functions such as monitoring, routing, etc.). A series of tests have been performed, and results confirm that by careful configurations, the computational overhead at the SDNC can be reduced without significantly affecting the efficiency of its components.
Original languageEnglish
JournalInternational Journal of Communication Networks and Distributed Systems
Issue number3
Pages (from-to)275-295
Publication statusPublished - 2016

Bibliographical note

Special Issue on: "Software Defined Networks and Infrastructures, Network Function Virtualisation, Autonomous Systems and Network Management"


  • Software Defined Networking
  • Openflow
  • Performance
  • Scalability
  • Distributed control plane


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