The new method to save energy for Openflow Switch based on traffic engineering

Improving energy efficiency in network equipments and data centers is becoming an increasingly important research topic. Recent researches on energy saving for green data center aim to solve problem: How to make the energy consumption is proportional to the actual traffic on the network. In this paper, we present a design aimed at reducing the power consumption for Openflow Switches while guaranteeing the Quality of Service (QoS). Firstly, we design the Performance Switch to save energy according to input traffic. When there is not any traffic going through the switch then operating frequence will automatically reduce to 0 MHz and it is changed to 125MHz in case the switch receives and transmits data. Finally, we describe our test system and performance evaluations. Experimental results show excellent evident in energy saving according to various ranges of traffic load. Our switches can save about 30%-35% of power consumption compared with normal Openflow switch.