Communication system, control apparatus, communication apparatus and communication method

Increased flexibility improve availability and control policy of the control device in the communication system of the centralized control type. Communication system includes a communication device for processing a packet in accordance with the control information set from the outside, and a control unit for controlling the communication device by setting the control information to the communication device. Further, as a control device of the communication system, and a second control unit for setting a control information according to the first controller and the second rule that sets the control information in accordance with the first rule is arranged, the first and the second control unit controls the communication device independent of one another.