EXPRL: experience and prediction based load balancing strategy for multi-controller software defined networks

Anuradha Banerjee*, D. M.Akbar Hussain

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

4 Citations (Scopus)


Software Defined Networks or SDN has proved itself to be backbone in a network design of the new era and is quickly becoming an industry standard. It allows decoupling of control and data plane for efficient monitoring of the network traffic. These networks can be divided into two main classes—single and multiple controller SDN. A single controller is unable to control flows if the number of switches connected to it increases up to a great extent and traffic generated by them overload the controller. In that case a pool of multiple controllers is a necessity. There each controller is initially connected to approximately same number of switches. Still, if a controller feels overloaded then some of its switches are disconnected from it and connected to some comparatively under loaded controller to balance load in the network. The present article EXPRL proposes an experience and prediction based load balancing strategy that efficiently identifies overloaded controllers and selects target underloaded controllers to shift some load from the overloaded ones. Simulation results show that EXPRL enables the network to greatly increase network throughput and reduce network latency as well as migration cost than its state-of-the-art competitors.

Original languageEnglish
JournalInternational Journal of Information Technology (Singapore)
Issue number4
Pages (from-to)2155-2169
Publication statusPublished - Jun 2022

Bibliographical note

Publisher Copyright:
© 2020, Bharati Vidyapeeth's Institute of Computer Applications and Management.


  • Actual call arrival rate
  • Latency
  • Load balance
  • Overloaded controller
  • Packet loss
  • Predicted call arrival rate
  • Target controller
  • Target switch
  • Throughput


Dive into the research topics of 'EXPRL: experience and prediction based load balancing strategy for multi-controller software defined networks'. Together they form a unique fingerprint.

Cite this