Network is dynamic and requires update in the operation. However, many confusions and problems can be caused by careless schedule in the update process. Although the problem has been investigated for many years in tra...Network is dynamic and requires update in the operation. However, many confusions and problems can be caused by careless schedule in the update process. Although the problem has been investigated for many years in tradi- tional networks where the control plane is distributed, soft- ware defined networking （SDN） brings new opportunities and solutions to this problem by the separation of control and data plane, as well as the centralized control. This paper makes a survey on the problems caused by network update, includ- ing forwarding loop, forwarding black hole, link congestion, network policy violation, etc., as well as the state-of-the-art SDN solutions to these problems. Furthermore, we summa- rize the network configuration strength and discuss the open issues of network update in the SDN paradigm.展开更多
基金The work was supported by the National Key Basic Research Program of China （973 program） （2014CB347800）, the National Natural Science Foundation of China （Grant Nos. 61522205, 61432002, 61133006, and 61502045）, the National High-tech R＆D Program of China （863 program） （2013AA013303, 2015AA01AT05, and 2015AA016102）, EU FP7 Made Curie Actions project Grant Agreement （the Cleansky project） （607584）, ZTE corporation and Tsinghua University Initiative Sci- entific Research Program.
文摘Network is dynamic and requires update in the operation. However, many confusions and problems can be caused by careless schedule in the update process. Although the problem has been investigated for many years in tradi- tional networks where the control plane is distributed, soft- ware defined networking （SDN） brings new opportunities and solutions to this problem by the separation of control and data plane, as well as the centralized control. This paper makes a survey on the problems caused by network update, includ- ing forwarding loop, forwarding black hole, link congestion, network policy violation, etc., as well as the state-of-the-art SDN solutions to these problems. Furthermore, we summa- rize the network configuration strength and discuss the open issues of network update in the SDN paradigm.
