Network status monitoring and warning method

A network status monitoring and warning method, which comprises the steps of:

• transmitting a test packet to a test host in order to extract path data, the path data containing the IP addresses of at least one connection devices traversed by the test packet as it travels to the test host;
• extracting expert data to determine IP addresses of all connection devices on an optimized path of the test packet to the test host;
• comparing the path data with the expert data;
• extracting the IP address of any connection device form the expert data that has different entries with the path data;
• and
• transmitting a warning signal to the connection device whose IP address is extracted.