| 摘要 |
The objective of the present invention is to enable the network topology of a local area network (LAN) to be recognized quickly, and to enable the location of a change to be recognized quickly when a change occurs in the network topology. A router executes a process whereby MAC addresses and the content stored in a MAC address table are collected periodically from switching hubs (included in a LAN connected by means of this router to a communication network such as the internet), the data collected from the switching hubs is analyzed, and network topology data for displaying the network topology of the LAN with a tree structure is generated. An image of the tree structure is then displayed on a display device, with the nodes up to the nodes immediately below this router as the drawing objects. When an expansion instruction is supplied with respect to any of the nodes, the router also can execute a process whereby the tree structure is redisplayed, with the new drawing objects being the nodes up to the nodes immediately below the node to which the expansion instruction has been supplied. |
