Testing system

A testing system for testing a network apparatus having a plurality of network ports, comprising:

• a signal generating device for providing a test packet;
• a network apparatus connecting device comprising a plurality of testing ports and a test packet port connected to the signal generating device, the testing ports enabling the network ports to be separately connected and operated, and the test packet port enabling the network ports to be connected and operated, wherein the test packet is sent to the network apparatus through the test packet port;
• a switching device having a plurality of switchable router lines each being connected to a corresponding one of the testing ports;
• and
• a controlling device connected to the switching device for generating a control signal adapted to control sequential switching of the router lines of the switching device such that the controlling device sequentially selects one of the router lines, the controlling device being capable of generating a test packet return instruction to be sent to the network apparatus via the selected router line, wherein the test packet return instruction enables the network apparatus to send the test packet to the controlling device via the selected router line and the corresponding one of network ports, and the controlling device being capable of determining a network connection status of the network port corresponding to the selected router line based on the test packet received.