JPH09330284A - Automatic ip address allocating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of network construction work by automating the IP address setting of a terminal connected to a network, the management of an IP address and the check of a terminal user at the time of IP address allocation. SOLUTION: A terminal 106 transmits an IP address request frame containing a MAC address and personnel information concerning the user of the terminal to a managing device 101, and the managing device collates the personnel information concerning the user contained in the IP address request frame with a personnel data base 105. When personnel information coincident with the personnel information concerning the user exists in the personnel data base, the non-allocated IP address is taken out of an IP address managing table and based on the MAC address contained in the received IP address request frame, this IP address is reported to the terminal that transmits the IP address request frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network system that requires an IP address, and more particularly to a method for automatically assigning an IP address by a management device.

[0002]

2. Description of the Related Art Conventionally, a network administrator or a terminal user manually sets an IP address of a terminal connected to a network system and manages the IP address, or places a management terminal for managing the IP address on the network. , The other terminals acquired the IP address from this management terminal. In any case, the user check at the time of assigning the IP address was manually performed. Documents relating to such a conventional technique include JP-A-5-28065 and JP-A-5-183550.

[0003]

As described above, in the method of manually managing the IP address and setting the IP address at each terminal, due to an input error (for example, setting the same address to a plurality of terminals), The network system may be damaged. In addition, even in the automatic allocation method by the address server, since it is necessary to manually check the terminal user, complicated procedures such as application to the network administrator are required. Also, in the case of a method of continuing to use an IP address that has been set once, the network administrator regularly checks the work of deleting (unassigning) an IP address that no longer exists.
It had to be done manually.

In order to solve such a problem, the present invention sets an IP address of a terminal connected to a network,
By automating the management of the IP address and the check of the terminal user at the time of assigning the IP address, the efficiency of the network construction work is improved.

[0005]

In order to achieve the above-mentioned object, the method for automatically assigning an IP address according to the present invention is such that
An IP address request frame including an AC address, a name of a user of the terminal, and personnel information about the user including identification information for identifying the user is transmitted to the management device, and the management device transmits the IP address. When the address request frame is received, the personnel information about the user included in the received IP address request frame is compared with the personnel database that holds the personnel information within the organization in which the network system is installed, and the personnel information about the user is obtained. When the personnel information that matches the information is present in the personnel database, the unassigned IP address is extracted from the IP address management table, and the IP address request frame is received based on the MAC address included in the received IP address request frame. The IP address is notified to the terminal that has transmitted.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a network system according to an embodiment of the present invention, and FIG. 2 is a block diagram for explaining the operation of managing IP addresses and assigning IP addresses to each terminal.

As shown in FIG. 1, a management device 101 and a terminal 106 are connected to a network 100. The terminal 106 is one of a plurality of terminals existing on the network 100. The management apparatus 101 has an OS 102, an address management program 103, an IP address management table 104, and a personnel database 105 that accurately reflects personnel within the company.

A plurality of available IP addresses are registered in advance in the IP address management table 104. One management device 101 is installed on the network 100 and is always in an operating state, and the address management program 103 operating on the OS 102 constantly manages the IP address of the terminal 106 on the network 100. A backup management device may be provided for backup in the event of a management device failure.

The terminal 106 has an OS 107, an address request program 108, an IP address storage area 109, and an input device 110.

In FIG. 2, when the IP address request program 108 in the terminal 106 receives employee information (employee number, name, affiliation, job title, etc.) from the input device 110 (arrow 201), it receives a MAC address (MAC address is unique to the device). Value is set at the time of manufacture), employee information and an IP address request frame 210 including an identifier indicating an address request are created and transmitted to the management apparatus 101 (arrow 202).

The address management program 103 searches the personnel database 105 based on the employee information in the IP address request frame 210, and if the received employee information and the contents of the personnel database 105 do not match, reject the address allocation. The failure frame 212 including the identifier and the reason for refusal is sent back (arrow 207). If the contents match, the MA in the IP address management table 104 is determined based on the MAC address in the IP address request frame 210.
Search C address. If the same MAC address has been registered as a result of the search, the failure frame 212 including the identifier indicating the address allocation refusal and the refusal reason is sent back (arrow 207). If the same MAC address does not exist, IP
An unassigned IP address is taken out from the address management table 104, a MAC address and an employee number are registered in a position corresponding to the unassigned IP address, and then a response frame 211 including an identifier indicating the address assignment permission and the IP address is sent back (arrow 207).

When the address request program 108 receives the response frame 211, it adds the added IP address to the I-frame.
Store in the P address storage area 109. When the failure frame 212 is received, the reason for rejection is output and the processing ends.

Next, an IP when a change or retirement occurs
Address management will be described. When the personnel database 105 changes due to employee changes, the address management program 103 searches the IP address management table 104 based on the changed employee number of the employee, and if the employee is assigned an IP address, the IP address The corresponding employee number and MAC address in the management table 104 are deleted and the IP address is returned to the unused state.

FIG. 3 is a flow chart showing an outline of the IP address allocation processing of the present invention. Next, description will be made with reference to this figure.

The management device side is waiting for frame reception (step 1).

The address request program in the terminal fetches the employee information from the input device (step 2), creates an IP address request frame including the employee information and the MAC address (step 3), and sends it to the management device (step 4).
After that, the system waits for a frame reception from the management device (step 5).

When the management apparatus receives the IP address request frame from the terminal (step 6), it checks whether the employee information in the received frame exists in the personnel database (step 7). If the employee information is not applicable, a failure frame is created and sent to the terminal (step 8). If the employee information matches, it is checked whether the MAC address in the received frame is already registered in the IP address management table (step 9), and if already registered, a failure frame is sent to the terminal (step 10). If the MAC address in the received frame is not registered, an unassigned IP address is taken out from the IP address management table (step 11), and the data in the received frame is written in the corresponding item (MAC address, employee number) (step). 12). After that, a response frame including the extracted IP address is created (step 13) and sent back to the terminal (step 14).

When the terminal receives a frame from the management device (step 15), the type of frame is judged (step 16), and if it is a failed frame, the reason for refusal is judged and an error is displayed (step 17). If the received frame is a response frame, the IP address in the frame is used as the own IP address and written in the IP address storage area (step 18).

FIG. 4 is a flow chart showing an outline of processing when an employee is transferred. Next, a description will be given using this.

When the address management program detects an employee change (retirement, transfer, etc.) from the personnel database (step 19), it searches the IP address management table using the employee number of the employee (step 20) and must be registered. If so, the process ends (step 21). If registered, the employee number and MAC address are deleted from the IP address management table and the IP address is returned to the unassigned state (step 22).

In the present embodiment, I changes according to personnel changes.
Since personnel changes can be dealt with quickly by updating the P address management table, it is possible to immediately connect to the network even if the affiliation changes. Further, it becomes possible to easily return the IP address that is no longer needed due to transfer, retirement, etc. to the unallocated state.

[0023]

As described above, according to the present invention, it is possible to automate the IP address setting and the user check of the terminal when the network system is constructed and the terminal is added, and it is possible to prevent unauthorized access by an outsider (outside the company).

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a network system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an operation of assigning an IP address to each terminal.

FIG. 3 is a flowchart showing an outline of an IP address allocation process according to the present invention.

FIG. 4 is a flowchart showing an outline of processing when a change occurs according to the present invention.

[Explanation of symbols]

100 ... Network line, 101 ... Management device, 102
... OS of management device, 103 ... Address management program,
104 ... IP address management table, 105 ... Personnel database, 106 ... Terminals connected to network, 10
7 ... Terminal OS, 108 ... Address request program, 1
09 ... IP address storage area, 110 ... Terminal input device, 210 ... Address request frame, 211 ... Response frame, 212 ... Failure frame.

Claims (1)

[Claims] 1. A network system having a management device, a plurality of terminals, and an IP address management table for managing an IP address of each of the plurality of terminals, wherein one of the plurality of terminals has a MAC address and the terminal. Of the user name of the user and personnel information about the user including identification information for identifying the user, and transmits an IP address request frame to the management device, and the management device transmits the IP address.
When the address request frame is received, the received IP
The personnel information about the user included in the address request frame is collated with a personnel database that holds personnel information within the organization in which the network system is installed, and personnel information that matches the personnel information about the user is stored in the personnel database. If it exists, the unassigned IP address is fetched from the IP address management table, and the IP address is notified to the terminal that has transmitted the IP address request frame based on the MAC address included in the received IP address request frame. A method for automatically assigning an IP address characterized by: