| 摘要 |
According to an aspect of an embodiment, a band management apparatus that manages a communication band of a transmission path between data relay devices in a ring network comprises a hypothetical network management information storage unit that stores information on the communication band set for the transmission path for each hypothetical network set in such a way as to include the data relay devices, a communication band calculator that calculates the communication band for each transmission path between neighboring data relay devices contiguously connected without sandwiching another data relay device, based on the information stored by the hypothetical network management information storage unit and a communication band setting unit that individually sets each communication band calculated by the communication band calculator as the communication band of the transmission path between the neighboring data relay devices.
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