Measuring of failure switch-over time in software-defined network
Zhang Hongbo, Nattapong Kitsuwan · 2016
This paper evaluates switch-over time of a failure protection in a software-defined network (SDN). In the area of network protection, it is very necessary to overcome the link failure. This failure may cause the traffic interrupted and the packets are lost in the network. In this case the time of recovery of the failure should be as short as possible. In case of open shortest path first (OSPF) network, it may need a quite long time to detect the topology of network and exchange the network information of routers. Therefore we use software-defined network to make it shorter. We measure the switch-over time in the SDN network to confirm that it is faster than that of the OSPF network. This work is implemented on an OpenFlow emulator, called Mininet. The switch-over time in the SDN network is 35 ms, approximately, as the target protection times is less than 50 ms.