| 摘要 |
A server management apparatus monitors activity state of an active server that provides a service to a client(s) via a plurality of switches, instructs a route control apparatus, managing routing for the plurality of switches, to change a packet forwarding route if there is no reply from the active server; and recognizes that the active server is stopped if there is no reply from the active server after a forwarding route is changed and instructs a standby server to provide the service instead of the active server.
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