Low-Complexity Master Controller Assignment in Distributed SDN Controller Environments

In a large-scale distributed software-defined networking environment, a switch is connected to multiple controllers for resiliency while assigned with one master controller, and only the master controller can install flow rules. Due to such permissions, the flow setup latency can be affected signifi...

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Bibliographic Details
Published inIEEE communications letters Vol. 22; no. 3; pp. 490 - 493
Main Authors Suh, Dongeun, Pack, Sangheon
Format Journal Article
LanguageEnglish
Published IEEE 01.03.2018
Subjects
controller assignment
distributed SDN controllers
Monitoring
Network topology
Process control
Resilience
Simulation
Software defined networking (SDN)
Switches
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Summary:In a large-scale distributed software-defined networking environment, a switch is connected to multiple controllers for resiliency while assigned with one master controller, and only the master controller can install flow rules. Due to such permissions, the flow setup latency can be affected significantly depending on the master controller assignment and thus how to assign the master controller is a prominent issue. In this paper, we formulate a master controller assignment problem to minimize the average flow setup latency with consideration of the number of assigned master controllers along a path. A low-complexity master assignment (LCMA) algorithm is devised to solve the problem in a practical manner. Extensive simulation results over real-world network topologies demonstrate that LCMA achieves near-optimal performance and outperforms the existing assignment scheme in terms of the average flow setup latency under various settings.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2017.2787590