Abstract: An embodiment of the present disclosure provides a visual real-time interaction method for software defined networking (SDN). According to this method, a visual interface is established for the SDN. The visual interface includes at least one first node indicative of a port of a switch and at least one second node indicative of a port of a service provider. The first node and the second node are distributed on at least one stack hub. A connection is established between the first node and the second node. The connection has a curvature different from a curvature of the stack hub, and at least an extension line of the connection intersects with the stack hub. A location corresponding to the port of the switch and a location corresponding to the port of the service provider and an attribute of the connection are determined according to the connection.