| 摘要 |
A topology design information generator which, based on design information storing setting information, which is set in each communication instrument in order to enable the communication, on a layer-by-layer basis, generates layer-by-layer topology design information of the network. A topology information generator which collects the layer-by-layer setting information actually set in each communication instrument and, based on the collected setting information, generates layer-by-layer topology information of the actually constructed network. And a topology information comparator which compares the topology design information generated by the topology design information generator, and the topology information generated by the topology information generator, on the layer-by-layer basis.
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