MONITORING DEVICE AND CARD REPLACING METHOD

A monitoring device is configured to couple to a transmission apparatus having a plurality of interface cards, and control a replacement of the plurality of interface cards, the monitoring device includes a memory in which state information including attribute information and an operating state are stored, a processor coupled to the memory and the processor configured to monitor the operating state of each of the plurality of interface cards associated with internal address information assigned to each of the plurality interface cards, determine whether first attribute information of a first interface card of the plurality of interface cards of a replacement source matches second attribute information of a second interface card of the plurality of interface cards of a replacement destination, and update external address information of the first interface card to external address information of the second interface card when the first attribute information matches the second attribute information.