Multi-Domain SDN Survivability for Agricultural Wireless Sensor Networks.
Wireless sensor networks (WSNs) have been widely applied in agriculture field; meanwhile, the advent of multi-domain software-defined networks (SDNs) have improved the wireless resource utilization rate and strengthened network management. In recent times, multi-domain SDNs have been applied to agricultural sensor networks, namely multi-domain software-defined wireless sensor networks (SDWSNs). However, when the SDNs controlling agriculture networks suddenly become unavailable, whether intra-domain or inter-domain, sensor network communication is abnormal because of the loss of control. Moreover, there are controller and switch info-updating problems even if the controller becomes available again. To resolve these problems, this paper proposes a new approach based on an Open vSwitch extension for multi-domain SDWSNs, which can enhance agriculture network survivability and stability. We achieved this by designing a connection-state mechanism, a communication mechanism on both L2 and L3, and an info-updating mechanism based on Open vSwitch. The experimental results show that, whether it is agricultural inter-domain or intra-domain during the controller failure period, the sensor switches can enter failure recovery mode as soon as possible so that the sensor network keeps a stable throughput, a short failure recovery time below 300 ms, and low packet loss. Further, the domain can smoothly control the domain network again once the controller becomes available. This approach based on an Open vSwitch extension can enhance the survivability and stability of multi-domain SDWSNs in precision agriculture.
State Key Laboratory of Networking and Switching Technology, BUPT, Beijing 100876, China. htao@bupt.edu.cn.|Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, Shijiazhuang 050081, China. htao@bupt.edu.cn.
Tao
T
Huang
State Key Laboratory of Networking and Switching Technology, BUPT, Beijing 100876, China. yansiyu@bupt.edu.cn.|Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, Shijiazhuang 050081, China. yansiyu@bupt.edu.cn.
Siyu
S
Yan
State Key Laboratory of Networking and Switching Technology, BUPT, Beijing 100876, China. yfan@bupt.edu.cn.|Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, Shijiazhuang 050081, China. yfan@bupt.edu.cn.
Fan
F
Yang
State Key Laboratory of Networking and Switching Technology, BUPT, Beijing 100876, China. liujiang@bupt.edu.cn.|Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, Shijiazhuang 050081, China. liujiang@bupt.edu.cn.
Jiang
J
Liu
multi-domain SDN; network survivability; wireless sensor network in agriculture