Fault-Tolerance Distributed Control Plane for Software Defined Networks

• Main Author: Vasily N. Pashkov
• Format: Article
• Language: English
• Published: Yaroslavl State University 2019-03-01
• Series: Modelirovanie i Analiz Informacionnyh Sistem
• Subjects: software-defined networking; sdn; distributed control plane; dcp; fault tolerance; load-balancing; openflow; data plane; network architecture
• Online Access: https://www.mais-journal.ru/jour/article/view/1166

The architecture of the high availability distributed control plane for SDN/OpenFlow networks are considered. High availability is achieved by redundancy of controller instances, active switch-controller communications, computing resources and tools for a controller instance failure and overloading detection and recovery. The proactive backup controller allocation algorithm which allows to minimize the time to repair in the case of a single controller instance failure is discussed. The algorithm for controller load-balancing allows dynamically reconfigure the control plane with a minimum number of switch control transfer operations to avoid controller instance overloading. The initial experimental results of the proposed algorithms for the HA distributed SDN control plane are described.