| 摘要 |
PROBLEM TO BE SOLVED: To incorporate a network apparatus, recovered from a failure, in a network system without requiring a complicated operation.SOLUTION: In a network system where communication is performed via a plurality of network apparatuses, backup data of the plurality of network apparatuses is acquired and held, and occurrence of a failure in at least any one network apparatus is detected based on a survival signal originated from the network apparatus. The fact that the network apparatus, in which a failure occurred, has recovered from the failure is detected based on a signal originated from the network apparatus thus recovered, and the backup data thus held of the network apparatus, in which a failure occurred, is set in the network apparatus recovered from a failure. |
