Patent ID: 8595571

Claim:
An error detection device comprising: a control unit configured to: identify a link pair having a first link connecting a first communication device to a third communication device and a second link connecting a second communication device to the third communication device, identify (N+1) number of first inspection devices that connect to the first communication device through third links, and (N+1) number of second inspection devices that connect to the second communication device through fourth links, the number N being the number of links where communication errors simultaneously occur, determine (N+1) number of inspection flows between (N+1) number of inspection device pairs by relating on a one-to-one basis the (N+1) number of first inspection devices to the (N+1) number of second inspection devices, generate inspection coverage information that includes the determined inspection flows, and analyze each of the inspection flows that is transmitted by one inspection device of each of the inspection device pairs and received by the other one inspection device of each of the inspection device pairs to determine whether the link pair has an communication error; a storage unit that stores the inspection coverage information; and a communication unit that sends the inspection coverage information from the control unit to the one inspection device of each of the inspection device pairs.