Media access control mac address learning, switching devices and controllers

Embodiments provide a media access control MAC address learning method of the present invention, the controller and the switching device, the method comprising: a first controller receives an open flow OF packet switching apparatus transmits the first packet and the port information ; generating a first MAC address entry according to the first packet and the first packet port information; the port of the first MAC address entry for said first packet into the port; and save the first MAC address entry to the MAC address table oF switching device; whether there is a second MAC address entry to determine whether the MAC address table oF switching device; second MAC address if said entry exists the controller switching the device transmitting the first MAC address entry and the second entry to the MAC address. oF; embodiment of the present invention, by the pair of MAC address entries issued, the controller can not learn to avoid the entire network of all the MAC address entries.