JPH07327044A - Method for controlling power supply for inter-lan connection device and terminal equipment - Google Patents

Abstract

PURPOSE:To control the power supply of a terminal equipment remotely and to easily build up a LAN. CONSTITUTION:When the power supply of a terminal equipment 5B is started, a terminal equipment 4A sends the power supply start request of the terminal equipment 5B to an inter-LAN connection device 2B via an inter-LAN connection device 1A and a broad area network 3. When a power start request is received, the inter-LAN connection device 2B gives the command of raising a power supply of the terminal equipment 5B via an operation control cable 7. Furthermore, a LAN terminal equipment connection section 8a accommodating a terminal equipment 4A such as a work station and a path control section 7A deciding a data path, a broad area memory connection section 10A to be connected to a broad area network and an operation control section 6 for a terminal equipment are provided integrally to the inter-LAN connection device 1A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a LAN-to-LAN connecting device (remote router, remote bridge) for connecting between a plurality of LANs for connecting a plurality of computer devices such as workstations and personal computers.

[0002]

2. Description of the Related Art As a conventional remote router or remote bridge, Nikkei DataPro Datacom (1991.
10 to 1992.5), there is one described in the list of connected devices between LANs. The remote router and the remote bridge are connected to the wide area network, and the LAN is connected by remote connection.
Connecting between.

A conventional technique will be described with reference to FIG. Figure 2
Shows a block diagram showing an example of the prior art. Figure 2
In the above, the LAN 110A and the LAN 110B are configured by connecting a plurality of terminals 108A and B such as workstations with LAN cables 103A and 103B. Terminal 1
08A and B are transceivers 10 for transmitting and receiving.
LAN device 1 such as 4A, B or multi-port repeater
07B are connected to the LAN cables 103A and B, respectively, and terminal devices 105A and B are provided at the ends of the LAN cables 103A and B, respectively. LAN connection device 101
A and B are routers, bridges, etc., which are devices for connecting LANs. LAN-to-LAN connection device 101A,
B is directly connected to the wide area network 102 or is connected to the wide area network 102 via the wide area network connection device 106A, B such as a modem. The LAN-to-LAN connecting devices 101A and 101B in the related art implement the LAN-to-LAN connection by relaying the terminal transmission data frame on the LAN to the terminal on the LAN at the remote site.

In FIG. 2, the terminal 10 of the LAN 110A
When communication is made from 8A to the terminal 108B of the LAN 110B, the terminal 108 of the LAN 110B located at a remote place.
B, the LAN device 107B, the inter-LAN connection device 101B, and the wide area network connection device 106B are activated and communication is started. Terminal 1 of LAN 110B that is a communication partner
08B, LAN device 107B, LAN connection device 101
B, when the wide area network connection device 106B is not activated, it is necessary to manually start the device which is not activated.

[0005]

As described above, in the conventional system, when communication is performed from a terminal such as a workstation, when a device as a communication partner is not activated, the terminal is manually operated at a remote place. Need to start up.

Further, in order to construct a LAN, devices such as a LAN cable, a transceiver and a LAN device are required. When constructing a LAN in a small space such as a branch office, a device such as a cable and a transceiver is required to connect the LAN device, which requires enormous cost and labor. Further, when connecting between LANs, a LAN connecting device such as a router and a wide area network connecting device are additionally required. Furthermore, as the system becomes larger,
Personnel costs for system operation or management per system tend to increase.

An object of the present invention is to provide a LAN-to-LAN connecting device capable of remotely controlling a terminal.
Another object of the present invention is to provide an inter-LAN connection device that can easily construct a LAN.

[0008]

In order to solve the above-mentioned problems, the present invention mutually connects a plurality of local area networks (hereinafter abbreviated as LAN) for connecting a plurality of terminals. In the LAN connection device
Wide area network connecting means for controlling the connection between the LAN connecting device and the wide area network, LAN connecting means for controlling connection between the LAN connecting device and the LAN, wide area network connecting means and LAN connection Route control means for controlling the destination route for the data received by the means,
The data received by the wide area network connection means is the L
Detection means for detecting that the power supply control request instruction is added with terminal identification information of the LAN terminal connected to the AN connection means; and when the detection means detects the power supply control request instruction, This is achieved by including control means for controlling the power supply of the terminal corresponding to the terminal identification information in accordance with the power supply control request instruction.

Further, each of a first and a second local area network (hereinafter,
A method for controlling power supply of a terminal in a system in which a plurality of LANs are abbreviated as LAN) via a first LAN connection device, a wide area network and a second LAN connection device. From the first inter-LAN connecting device and the second inter-LAN connecting device to the second inter-LAN connecting device by sending a power control request instruction to which identification information of the terminal connected to the second LAN is added, In the inter-LAN connecting device, when the power control request instruction of the terminal connected to the second LAN is accepted, the power of the terminal corresponding to the identification information is controlled according to the power control request instruction. It

[0010]

The wide area network connecting means controls the connection between the LAN connecting device and the wide area network.

The route control means controls the destination route for the data received by the wide area network connection means. Further, the detection means detects that the data received by the wide area network connection means is a power supply control request instruction to which terminal identification information about the terminal of the LAN connected to the LAN connection means is added. The control means controls the power supply of the terminal corresponding to the terminal identification information in accordance with the power supply control request instruction when the detecting means detects the power supply control request instruction. That is, when a power supply control request instruction for a terminal of the LAN connected to the LAN connection means is received from another LAN or another device via the wide area network, the detection means detects the power supply control request, and the control means powers the terminal. Control can be performed. This allows remote control of the terminal.

Further, the LAN connecting means receives from the LAN a power supply control request instruction for another device connected to the wide area network connecting means via a wide area network, and the path control means receives the power control request instruction. The power supply control request instruction received by the LAN connection means can be controlled to be sent from the wide area network connection means to the other device.
As a result, it is possible to send a power supply control request instruction to another device via the wide area network.

Furthermore, since the wide area network connecting means and the LAN connecting means are provided in the LAN connecting device, a cable or the like is not required to connect them, and LAN construction can be facilitated.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a LAN-to-LAN connecting device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a connection configuration diagram of a LAN-to-LAN connecting device in this embodiment. In FIG. 1, the LAN 110
The A and LAN 110B are configured by connecting a plurality of terminals such as workstations and servers to the LAN connection device. 1 and 2 are inter-LAN connecting devices A and B, and L
It is a device for connecting between ANs. The inter-LAN connecting device 1A and the inter-LAN connecting device 2B are connected to each other through the wide area network 3. The inter-LAN connecting device 1A and the inter-LAN connecting device 2B control a LAN terminal connecting unit 8A for connecting a LAN terminal, a LAN connecting unit 11B for connecting a LAN, and a route for connecting to another LAN. And route control units 9A and 12B, and operation control units 14A and 6B for controlling the power supply of the terminal, respectively. The inter-LAN connecting devices 1A and 2B may further include wide area network connecting units 10A and 13B for connecting to the wide area network 3.

The LAN terminal connection unit 8A of the inter-LAN connecting device 1A accommodates a plurality of terminals A4 such as workstations, and performs frame control through, for example, a 10BASE-T interface. The LAN connecting unit 11B of the inter-LAN connecting device 2B is connected to the LAN cable via the transceiver 104 by the terminal B5 such as a server, accommodates the LAN cable 103, and receives the CSMA / C.
Frame control is performed through a D interface or the like.

The route control units 9A and 12B check the address information of the transmission / reception frame and control the route of the transmission / reception frame.

The wide area network connection units 10A and 13B control connection / disconnection with the wide area network and transmit / receive data to / from the wide area network. If the wide area network connection units 10A and 13B are not provided, they may be connected to the wide area network connection device via a modem interface. The wide area network connection units 10A and 13B use an I series interface as a wide area network interface,
At least one of a V series interface and an X series interface can be provided.

The operation control section B6 also controls the power on / off of the terminal B5 via the operation control cable 7. Details of the operation control unit will be described later.

FIG. 4 shows an internal configuration diagram of the LAN-to-LAN connecting device. As shown in FIG. 4, the function of the LAN-to-LAN connecting device is that the LAN terminal connecting portion 8A directly connects the terminals.
And a LAN that connects terminals via the transceiver 104
You may provide both with the connection part 11B, and may utilize any of them. Alternatively, either function may be provided. Or
When both functions are provided, both functions may be used together.

As shown in FIG. 4, the frame sent from the LAN terminal is received by the LAN terminal control unit 8 and sent to the route control unit 9. Transmission and reception between the LAN terminal and the LAN-to-LAN connecting device can be performed by preparing a standard port such as Telnet. The route control unit 9 analyzes the address of the transmitted frame, requests the connection to the wide area network connection unit 10 when the transmission is to another LAN, and transmits the frame to the wide area network via the wide area network connection unit 10. Send out. Further, when the address of the transmitted frame is addressed to a LAN terminal within the same LAN, the route control unit 9 sends the frame to the destination LAN terminal via the LAN terminal connection unit 8. Further, when the address of the transmitted frame is addressed to the operation control unit 14, the route control unit 9 transmits this frame to the operation control unit. Some contents of the frame transmitted to the operation control unit include terminal identification information for controlling the power supply of the terminal and a power supply control request. A frame sent from the LAN is also route-controlled by the route controller 9 via the LAN connector 11.

When a frame transmitted from another LAN via the wide area network is received, the wide area network connection unit 10 is connected.
After the reception at, the route control unit analyzes the address and performs the route control in the same manner as the above-described operation.

Next, taking as an example the case where the terminal 4A shown in FIG. 1 communicates with the terminal B5, the operation of controlling the power supply of the terminal 4A from the terminal 4A will be described with reference to FIGS. 3 and 5. FIG. 3 shows a flowchart of the start / stop request processing in this embodiment, and FIG. 5 shows the terminal 4 during power control,
The transmission / reception sequence of the LAN connection device 2B and the terminal 5 is shown.

As shown in FIG. 5, first, L from the terminal 4A.
The user logs in to the operation control unit 6B of the LAN connection device 2B via the AN connection device 1A and the wide area network 3. In this case, an address addressed to the operation control unit 6B is added and a login command is transmitted. At that time, a password is added. Upon receiving the login command, the operation control unit 6B checks the password and, if the password matches the predetermined password, transmits a response indicating "login permission" and establishes a session with the terminal 4A. Next,
The terminal 4A indicates to the operation control unit 6B of the LAN-to-LAN connecting device 2B "terminal 5B-Po" that indicates a power activation request for the terminal 5B.
a "wer ON" command. "Terminal 5B-Po
The operation control unit 6B that has received "wer ON" is the terminal 5B.
A "Power ON" command indicating a power activation request is sent to the device via the operation control cable 7. The control via the operation control cable will be described later. Terminal 5B
Then, after the power is turned on, "Pow"
"er ON state display" is sent to the operation control unit 6B.
Upon receiving this, the operation control unit 6B sends a “Power ON completion” response indicating that the power supply has been activated to the terminal 4A. When confirming that the power of the target terminal 5B has been activated, the terminal 4A issues a "logout" command to the operation control unit 6B. Upon receiving it, the operation control unit 6B transmits a "logout completion" response indicating that the logout is completed, and disconnects the session.

The processing in the operation control unit in this case is shown in FIG.
Will be described with reference to.

In FIG. 3, as described above, the operation control unit B6 sends a start request for the terminal 5B from the terminal 4A to the LAN.
It is accepted via the inter-connection device 1A and the wide area network 3 via the wide area network connection part B13 and the route control part B12 of the inter-LAN connection device 2B, and it is detected that it is a start request (step 31). The operation control unit B6, which has detected the activation request, receives the terminal 5 through the operation control cable 7 as shown in FIG.
The startup state of B is confirmed (step 32). If the terminal 5B is activated, the request is discarded (step 34), and if it is stopped, an activation command is issued to the terminal 5B through the operation control cable 7 to activate the terminal 5B (step 33).
After issuing the activation command, the activation state of the terminal 5B is confirmed through the operation control cable 7 (step 35), and the terminal 5B
If is not started, issue the start command again
(Step 33). If the activation of the terminal 5B is completed, the next request is waited (step 36). Next, after the activation of the terminal 5B is completed, the terminal 4A transmits data to the terminal 5B.

A power-off request can be processed in the same manner.

In this way, the power supply of another terminal can be controlled from the terminal via the operation control section.

After the power of the terminal is activated, the terminal 4A can start communication with the terminal 5B. That is,
The data transmitted from the terminal 4A is the LAN connection device 1
The LAN terminal connection unit 8A of A receives the route and the route control unit 9A determines the route.
The data is transmitted to the wide area network 3 through. The data received from the wide area network 3 includes the wide area network connection unit B13 and the route control unit B.
12, data is transmitted to the terminal 5B through the LAN terminal connection unit B11. When the route control unit 9A determines that the data transmitted from the terminal 4A is data to the terminal on the same LAN, the data is transmitted to the corresponding terminal through the corresponding LAN terminal connecting unit 8A.

Next, the operation controller will be described in detail. 6 to 9 are explanatory diagrams of the interface between the operation control unit and the terminal and the operation control.

FIG. 6A shows the specifications of the connector of the interface in the operation control cable 7 between the operation control section and the terminal, and FIG. 6B shows the pin numbers and signal names of the interface. The function of the signal is shown in FIG. 8 and 9 show a power supply control sequence.

In the terminal of this embodiment, after the main power supply and the auxiliary power supply are turned on, when the power supply control signal inside the terminal is controlled, the system power of the terminal is turned off / on according to the control.
ON controlled. That is, when the terminal is not used, the main power supply and the auxiliary power supply are turned on and the system power supply is turned off. Turn on the system power when using the terminal. As shown in FIG.
When controlling the power supply to the terminal from the LAN-to-LAN connecting device side, it is controlled by "Power-P and Power-N". Also, the LAN-to-LAN connecting device is
By referring to “e-P and Remote-N”, it is possible to recognize the power on / off state of the terminal.

As shown in FIG. 8, when the main power switch of the terminal is turned on and the auxiliary power (VSUB) is supplied, the inter-LAN connection device requests the power activation (Power signal = "Power
When the "ON" command) is transmitted, the power supply control signal inside the terminal is asserted. As a result, the system power supply (DC power supply) is turned on, and the terminal is turned on. At the same time, the signal indicating the state of the power supply (Remote signal) is
The status changes from "HIGH" to "LOW", and the power status of the terminal is transmitted to the LAN-to-LAN connecting device. Thereby, the operation control unit can confirm the activation of the terminal.

Further, as shown in FIG. 9, when a power disconnection request (Power signal) is transmitted from the LAN-to-LAN connecting device while the terminal system power is on, an interrupt signal (IRQ-N signal) inside the terminal is generated. Is asserted, and when the processing in the terminal at that time is completed or interrupted, permission to turn off the power is output. As a result, the system power supply (DC power supply) is cut off and the terminal is turned off.

When a LAN terminal connecting portion for directly accommodating a terminal is provided, power supply control may be performed via the data line instead of the operation control cable 7.

As described above, the power supply of the terminal can be controlled. Therefore, if the device with which you are communicating is not activated, you can start up the terminal without intervention from a remote location, and when operating the system, you can reduce system operation costs by unmanning the system. You can That is, operation control such as start / stop of the network device can be remotely performed through the wide area network or the LAN as needed, and the hand of the communication partner is not required when performing the communication. Further, the power supply may be controlled in the same manner in devices other than the terminal.

Further, according to this embodiment, the LAN connecting device is provided with the LAN terminal connecting part or the LAN connecting part, the route controlling part, and the operation controlling part as one body. LAN is no longer needed
Can be easily constructed. In addition, management is easy. Furthermore, by providing the wide area network connecting unit in the LAN connecting apparatus, the wide area network connecting apparatus becomes unnecessary. Also,
When a wide area network connection device, a LAN terminal connection device, and a LAN connection device are separately provided, it is necessary to control the power supplies of those devices as well, but by integrating these devices, the power supply of the LAN connection device can be controlled. If you are up, you can communicate immediately.

[0038]

According to the present invention described above, it is possible to remotely control the power supply of the terminal, and when operating the system, it is possible to reduce the system operating cost by unmanning the system. In addition, a small-scale LAN is available
When constructing a system and connecting between LANs, the work in constructing the LAN can be reduced and the system can be constructed easily.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a conventional configuration diagram.

FIG. 3 is a flowchart of a boot request process according to the embodiment.

FIG. 4 is an internal configuration diagram of a LAN-to-LAN connecting device in the embodiment.

FIG. 5 is an explanatory diagram showing a transmission / reception sequence in the embodiment.

FIG. 6 is an explanatory diagram of an interface in the operation control cable 7 according to the embodiment.

FIG. 7 is an explanatory diagram of signals in the operation control cable 7 according to the embodiment.

FIG. 8 is an explanatory diagram of a power supply control sequence according to the embodiment.

FIG. 9 is an explanatory diagram of a power supply control sequence according to the embodiment.

[Explanation of symbols]

101 ... LAN connection unit, 102 ... Wide area network, 103 ... L
AN cable, 104 ... Transceiver, 105 ... Termination device, 106 ... Wide area network connection device, 107 ... LAN device, 1
08 ... Terminal, 1 ... LAN connection device A, 2 ... LAN connection device B, 3 ... Wide area network, 4 ... Terminal A, 5 ... Terminal B, 6 ...
Operation control section B, 7 ... Operation control cable, 8 ... LAN terminal connection section A, 9 ... Route control section A, 10 ... Wide area network connection section A, 11 ... LAN terminal connection section B, 12 ... Route control section B,
13 ... Wide area network connection unit B, 14 ... Operation control unit A.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masakazu Nakayama 2-6-2 Otemachi, Chiyoda-ku, Tokyo Inside Hitachi Information Network Co., Ltd.

Claims (4)

[Claims] 1. A LAN-to-LAN connecting device for connecting a plurality of local area networks (hereinafter abbreviated as LAN) to each other for connecting a plurality of terminals to each other. Wide area network connecting means for controlling the connection between the LAN and the LAN connecting means for controlling the connection between the LAN connecting device and the LAN, and the destination of the data received by the wide area network connecting means and the LAN connecting means. The route control means for controlling the route and the data received by the wide area network connection means are
Detection means for detecting that the power supply control request instruction is added with terminal identification information for the LAN terminal connected to the AN connection means; and when the detection means detects the power supply control request instruction, An inter-LAN connecting device, comprising: a control unit that controls the power supply of the terminal corresponding to the terminal identification information according to the power supply control request instruction. 2. The LAN connecting means according to claim 1, wherein the L control unit issues a power control request instruction for another device connected to the wide area network connecting means via a wide area network.
A LAN characterized in that the route control means receives the power control request instruction received from the LAN connection means from the wide area network connection means to the other device. Inter-connection device. 3. The LA according to claim 1, further comprising, instead of the LAN connecting means, terminal connecting means for forming a LAN by accommodating a plurality of terminals.
Connection device between N. 4. A first inter-LAN connecting device, a wide area network and a second LAN are provided between a first and a second local area network (hereinafter abbreviated as LAN) to which a plurality of terminals are respectively connected. A power supply control method for a terminal in a system connected via an inter-connection device, wherein a terminal in a first LAN is connected to a second inter-LAN connection device via the first inter-LAN connection device and the wide area network. On the other hand, the power supply control request instruction to which the identification information of the terminal connected to the second LAN is added is transmitted, and the power supply control request instruction of the terminal connected to the second LAN is transmitted in the second inter-LAN connecting device. A power supply control method, which, when accepted, controls the power supply of the terminal corresponding to the identification information according to the power supply control request instruction.