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The research on a novel structure of two‐layer distributed controllers in software‐defined networking
Author(s) -
Dong Ligang,
Yang Dandan,
Guo Kaiqiang,
Fei Shuocheng,
Li Ying,
Wang Weiming
Publication year - 2017
Publication title -
international journal of network management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.373
H-Index - 28
eISSN - 1099-1190
pISSN - 1055-7148
DOI - 10.1002/nem.2016
Subject(s) - computer science , scalability , controller (irrigation) , reliability (semiconductor) , distributed computing , network topology , software defined networking , layer (electronics) , software , computer network , operating system , power (physics) , chemistry , physics , organic chemistry , quantum mechanics , agronomy , biology
Summary Distributed controllers have been proposed for solving the scalability and reliability of the centralized controllers problems in software‐defined networking. This paper has presented a new two‐layer distributed controller structure Cacc with the features of overlap management and dynamic management. Cacc has advantages of load balancing and manageability. Furthermore, this paper has conducted the performance modeling of controller topologies and has proposed a new placement problem for Cacc: capacitated multi‐controller placement problem, in which one local controller is assigned to 2 or more root controllers with capacity limitation to achieve a high reliability. Both of the analysis and experiment results have verified the reliability advantages of capacitated multi‐controller placement problem.