Flow control testing device and method

An equipment and method to achieve fluidic testing, that is: cascade a group of untested Ethernet ports by the overlapping, the output of the frame generator as input of the first Ethernet port in a group of cascade Ethernet port, the last Ethernet port output in a group of cascade Ethernet port as the input of the frame generator; then, processes the corresponding configure and fluidic testing based on the untested Ethernet port. The invention can achieve the fluidic function testing for all the ports of the Ethernet veneer and not reconnect the exterior line of the Ethernet veneer, thereby improve the testing efficiency and decrease the testing cost.