Network station and network management system
First Claim
1. A network station connected to a communication network, the communication network being connected to a network management station, the network station comprising:
- a power source;
a power switch for controlling power-on and power-off of the power source;
power control means for sensing a power-off state of the power switch, generating an event representing the power-off state, and outputting the even and a generation end signal indicating a complete creation of the event;
storage means for storing therein an address of the network management station;
connection control means electrically connected to the power control means and the storage means for receiving the generation end signal outputted from the power control means, acquiring the address of the network management station from the storage means, and issuing a connection request to establish connection between the network station and the network management station; and
network control means electrically connected to the power control means and the connection control means for enabling, in response the connection request issued from the connection control means, communication between the network station and the network management station, and transmitting to the network management station the event outputted from the power control means.
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Accused Products
Abstract
A network management system includes network stations each having a power source and a power switch to turn the power source on and off, a network management station to monitor the network stations, and a communication network enabling connections between the network stations and the network management station. When turned off by the power switch, the network station enables communication with the network management station and then sends an event to notify the power-off state thereto. This enables the network management system to display whether the communication failure is caused by a network failure or the power-off of the network station.
39 Citations
23 Claims
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1. A network station connected to a communication network, the communication network being connected to a network management station, the network station comprising:
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a power source; a power switch for controlling power-on and power-off of the power source; power control means for sensing a power-off state of the power switch, generating an event representing the power-off state, and outputting the even and a generation end signal indicating a complete creation of the event; storage means for storing therein an address of the network management station; connection control means electrically connected to the power control means and the storage means for receiving the generation end signal outputted from the power control means, acquiring the address of the network management station from the storage means, and issuing a connection request to establish connection between the network station and the network management station; and network control means electrically connected to the power control means and the connection control means for enabling, in response the connection request issued from the connection control means, communication between the network station and the network management station, and transmitting to the network management station the event outputted from the power control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A network station connected to a communication network, the communication network being connected to a network management station, the network station comprising:
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a bus; a CPU connected to the bus; storage means connected to the bus; a communication processor connected to the bus and the communication network; a power source electrically connected to the bus for supplying power via power lines to the CPU, the storage means, and the communication processor; and a power switch connected to a signal line to the CPU for notifying a power-off interruption signal to the CPU; wherein the CPU includes means responsive to the interruption signal for creating an event representing the power-off state; wherein the storage means includes a network management station address storage area for storing therein an address of the network management station; wherein the CPU includes means for acquiring the address of the network management station from the network management station address storage area and outputting to the communication processor the address of the network management station and a connection indication to establish connection between the network station and the network management station; wherein the communication processor includes means responsive to the connection indication and the address of the network management station for enabling communication between the network station and the network management station, and notifying the CPU of a termination report indicating a communication ready state; wherein the CPU includes means responsive to the termination report for outputting to the communication processor the event and a transmission indication to transmit the event to the network management station; and wherein the communication processor includes means responsive to the transmission indication for transmitting the event to the network management station. - View Dependent Claims (15, 16)
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17. A network management system for managing a network, the network management system comprising:
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a communication network; a network station connected to the communication network; and a network management station for monitoring he network station, the network management station being connected to the communication network; wherein the network station includes a power source, a power switch for controlling power-on and power-off of the power source, power control means for sensing a power-off state of the power switch, generating an event representing the power-off state, and outputting the event and a generation end signal indicating a complete creation of the event, storage means for storing therein an address of the network management station, connection control means electrically connected to the power control means and the storage means for receiving the generation end signal outputted from the power control means, acquiring the address of the network management station from the storage means, and issuing a connection request to establish connection between the network station and the network management stations, and first network control means electrically connected to the power control means and the connection control means for enabling, in response to the connection request issued from the connection control means, communication between the network station and the network management station, and transmitting to the network management station the event outputted from the power control means; and wherein the network management station includes second network control means for enabling, in response to the request from the network station, communication between the network station and the network management station, event receiver means electrically connected to the second network control means for receiving the event outputted from the network station, analyzing the received event, and outputting an indication signal corresponding to the event, and output means electrically connected to the event receiver means for outputting the power-off indication in response to the indication signal outputted from the event receiver means. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification