| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multi-ring RPR node device capable of reducing the required hardware amount in the multi-ring RPR node device accommodating a plurality of RPR rings. SOLUTION: Between a plurality of RPR-MAC units provided in a one-to-one relation with a plurality of RPR rings (ring #1 to ring #4) and an aggregation SW unit 113 accommodating a branch line side, a topology table which manages node arrangement on a multi-ring network constituted of the plurality of RPR rings and fault information is disposed in a ring aggregator 114 that implements ring aggregation and fault avoiding processing can be performed, thereby reducing the required hardware amount. COPYRIGHT: (C)2009,JPO&INPIT
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