| 摘要 |
PURPOSE: An apparatus for managing link states of subscriber boards in a switch system is provided to easily manage the link states of the subscriber boards of the switch system by simply managing link states of standby subscriber boards. CONSTITUTION: A standby board link state monitor unit(30) monitors link states of a plurality of standby subscriber boards and outputs a plurality of second link state information. A link selecting unit(24) connects a plurality of active subscriber boards to a plurality of active board link state detecting units(26), and successively connects a plurality of the standby subscriber boards to the standby board link state monitor unit(30), by the control of a local processor unit(32). A link state managing unit(28) receives a plurality of first link state information, and transmits received first link state information to a plurality of the active subscriber boards. The link state managing unit(28) successively receives a plurality of second link state information and transmits received second link state information to a plurality of the standby subscriber boards. The local processor unit(32) receives a state conversion control signal, and controls the link selecting unit(24) so that the active subscriber boards and the standby subscriber boards connect to the active board link state detecting units(26) and the standby board link state monitor unit(30).
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