Reducing power consumption of swiontributes to scale down the overall energy neededata centers. In this paper, we propose some nergy saving modes for the OpenFlow switch baseNetFPGA platform, which are LOW-POWER modeSLEEP mode. In normal scenario, switch operatHIGH-POWER mode; however, when the traffic ghrough the switch becomes lower than a cehreshold level, it will be activated in LOW-POmode; moreover, if there is no traffic, it will operaSLEEP mode to save most energy. Experimental rehow excellent evident in energy saving accordinarious ranges of traffic load. Our switch can bout 46.6% of power consumption when runninLOW-POWER mode and up to about 60% if runninSLEEP mode by comparing to HIGH-POWER mode.