JP2012070042A - System, device and program for managing address information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for managing address information, allowing a user to easily and visually determine an assignment state of an IP address and to register, update and delete the IP address in increments of its prefix by a simple operation.SOLUTION: A system for managing address information, which manages an IP address used in a network and displays an assignment state of the IP address on a terminal in increments of a prefix of the IP address, includes: storage means for storing information regarding a screen expressing an IP address space in a matrix form and displaying the assignment state of the IP address in increments of the prefix; screen displaying means for sending the screen to the terminal to allow the terminal to display it; and IP address space changing means for, when receiving a change instruction of the IP address space expressed in the matrix form, changing the IP address space on the screen, and allowing the storage means to storage information regarding a screen expressing the changed IP address space.

Description

  The present invention relates to an address information management system, apparatus, and program, and can be applied to, for example, an address information management system, apparatus, and program for managing IP address allocation status display and registration.

  For example, an organization such as a country or a company constructs an IP network composed of a plurality of sub-networks. IP addresses are allocated to communication terminals, servers, communication devices, etc. existing on the IP network. However, management of IP addresses becomes complicated as the number of communication terminals increases.

  As a technique for solving such a problem, there is a technique disclosed in Patent Document 1. The technique described in Patent Document 1 has a master table in which IP addresses used in each sub-network and information related to the IP addresses are stored, and can search the usage status of the IP addresses. The search of the IP address usage status is to display a list of IP addresses assigned to the segment of the search specified condition.

JP 2008-227756 A

  However, since the technique described in Patent Document 1 described above has a master table storing the IP address segment of each sub-network of the entire network and information related thereto, the IP address segment can be paid out, but is not available. There may also be a problem that it is difficult for the user to know where the segment is.

  Further, for effective use of the IP address, it is necessary to delete unnecessary segments, move segments, reduce segments, etc., but the technique described in Patent Document 1 only displays a list of segments. The problem of inefficiency in such applications can also arise.

  Therefore, there is a need for an address information management system, apparatus, and program that makes it easy to visually determine the allocation status of IP addresses and allows a user to perform registration, update, and deletion of IP addresses in prefix units with simple operations. It has been.

  In order to solve this problem, an address information management system according to a first aspect of the present invention manages an IP address used in a network, and displays an IP address allocation status on a terminal. (1) Storage means for expressing IP address space in a matrix format and storing information relating to a screen for displaying the status of IP addresses assigned in prefix units; and (2) Screen display means for giving a screen to a terminal for display. (3) When an instruction to change the IP address space expressed in matrix format is received from the terminal, the IP address space on the screen is changed, and information on the screen expressing the changed IP address space is stored in the storage means. And an IP address space changing means for storing.

  An address information management device according to a second aspect of the present invention manages an IP address used in a network, and displays an IP address allocation status on a terminal. (1) IP address space A storage means for storing information relating to a screen for displaying a status of an IP address expressed in a matrix format and assigned in prefix units; (2) a screen display means for giving a screen to the terminal for display; and (3) from the terminal, Upon receiving an instruction to change the IP address space expressed in a matrix format, the IP address space changing means for changing the IP address space on the screen and storing information on the screen expressing the changed IP address space in the storage means; It is characterized by providing.

  An address information management program according to a third aspect of the present invention manages an IP address used in a network. In the address information management program of an address information management apparatus for displaying an IP address allocation status on a terminal, (1 ) A memory means for expressing information about the IP address space in a matrix format and storing information relating to the screen for displaying the status of the IP addresses allocated in prefix units. (2) Screen display for giving a screen to a terminal for display (3) Upon receiving an instruction to change the IP address space expressed in matrix form from the terminal, the IP address space on the screen is changed, and information on the screen expressing the changed IP address space is stored in the storage means. It functions as an IP address space changing means for storing.

  According to the present invention, it is easy to visually determine an IP address allocation status, and a user can perform registration, update, deletion, etc. of IP addresses in prefix units with a simple operation.

It is a figure which shows the example of a whole screen of the matrix display screen displayed on the browser terminal of 1st Embodiment. It is explanatory drawing explaining the relationship of the prefix of the IP address displayed on the matrix of 1st Embodiment. It is explanatory drawing explaining the new registration process per prefix of the IP address of 1st Embodiment. It is a flowchart which shows the new registration process per prefix of the IP address of 1st Embodiment. It is explanatory drawing explaining the case where an IP address (prefix) is allocated on the matrix of 1st Embodiment. It is explanatory drawing explaining the display of the detailed information of 1st Embodiment, and the process of area | region deletion It is a flowchart which shows the display process of the detailed information of 1st Embodiment. It is a flowchart which shows the area | region deletion process of 1st Embodiment. It is explanatory drawing explaining the process of the area | region movement of 1st Embodiment. It is a flowchart which shows the process of the area | region movement of 1st Embodiment. It is a block diagram which shows the structure of the address information management system of 1st Embodiment.

(A) First Embodiment A first embodiment of the address information management system, apparatus, and program of the present invention will be described with reference to the drawings.

  In the first embodiment, an embodiment in which an IPv4 IP address is paid out in units of segments will be described as an example. However, the IP address is not limited to IPv4, and the present invention can also be applied to IPv6.

(A-1) Configuration of First Embodiment (A-1-1) Overall Configuration FIG. 11 is a configuration diagram showing the configuration of the address information management system of the first embodiment. In FIG. 11, the address information management system according to the first embodiment includes at least a server 1 and a browser terminal 2.

  The browser terminal 2 is a terminal having a communication function and a browser function. The browser terminal 2 requests the server 1 for a display screen for displaying the IP address allocation status, and displays a display screen based on the screen information received from the server 1 on a display unit (not shown). Further, the browser terminal 2 has an operation unit (not shown) (for example, a mouse, a keyboard, etc.), and gives a user operation instruction to the server 1. The screen displayed on the browser terminal 2 is a matrix display screen as will be described later.

  In FIG. 11, only one browser terminal 2 is shown, but a plurality of browser terminals 2 may be provided.

  The user can visually determine the currently used IP address space and which IP address space is not currently used by looking at the matrix display screen displayed on the display unit. . In addition, the user can register, change, delete, etc. in prefix units of IP addresses allocated to segments by designating a matrix cell or row of the matrix using the operation unit.

  The server 1 is an address information management device that manages the IP address of a communication device existing on the IP network. The server 1 is connected to the browser terminal 2 and gives screen information indicating IP address management information to the browser terminal 2. In addition, the server 1 issues an IP address in units of segments in accordance with instructions received from the browser terminal 2, and performs management in units of prefixes of IP addresses allocated for each segment.

  Note that the server 1 exists on an IP network including sub-networks constructed at a plurality of bases, for example, and can communicate with a communication device on the IP network.

(A-1-2) Description of Display Screen Next, a display screen displayed on the display unit of the browser terminal 2 will be described with reference to the drawings. FIG. 1 is a diagram illustrating an example of an entire screen of a matrix display screen displayed on the browser terminal 2.

  In FIG. 1, the matrix display screen has at least a row 1-1, a matrix 1-2, display area movement buttons 1-3 and 1-4, an enlarged display change button 1-5, and a reduced display change button 1-6. Configured.

  A row 1-1 is a row of the matrix 1-2, and indicates an IP address and a prefix of one row displayed in the matrix 1-2.

  The matrix 1-2 shows the IP address space in a matrix format. In addition, in the matrix 1-2 illustrated in FIG. 1, the allocation status of the segments in the IP address space displayed in the row 1-1 is displayed.

  For example, the matrix 1-2 illustrated in FIG. 1 has an IP address space from “172.19.0.0” to “172.19.31.255” in a grid of 32 × 32 matrices. expressing. For example, the line 1-1 is “172.19.0.0/24”, “172.19.1.0/24”,..., “172.19.3.0/24”. The IP address space is shown. The prefix is “/ 24”, and the space delimited by “/ 24” is a one-line space. For example, the first line shows an IP address space of “172.19.0.0” to “172.19.0.25” separated by “/ 24”.

1 illustrates the matrix 1-2 represented by a 32 × 32 matrix, the present invention is not limited to this. The number of rows and columns may or may not be the same, but the number of rows or columns needs to be ^2N (N is a natural number).

  Further, the matrix 1-2 is color-coded so that the segment of the IP address being used and the segment of the free IP address can be identified at a glance. For example, in the case of FIG. 1, an empty IP address segment is shown in white, and a used IP address segment is shown in black (hatched).

  The display area moving buttons 1-3 and 1-4 are buttons for moving the display area of the displayed IP address space. The display area movement button 1-3 is a button for displaying a small area of the displayed IP address space, and the display area movement button 1-4 is a button for displaying an area of a large IP address space. is there. By depressing the display area designations 1-3 and 1-4, the area displaying the IP address allocation area can be moved.

  The enlarged display change button 1-5 is a button for enlarging the displayed IP address space. When the enlargement display change button 1-5 is pressed, the prefix value in one line can be increased. For example, when the space of “/ 24” is displayed on one line, if the enlargement display change button 1-5 is pressed, the line becomes “/ 25” space.

  The reduced display change button 1-6 is a button for reducing the displayed IP address space. When the reduction display change button 1-6 is pressed, the prefix value in one line can be reduced. For example, when the space of “/ 24” is displayed on one line, when the reduction display change button 1-6 is pressed, the space of “/ 23” is displayed on one line.

(A-1-3) Internal Configuration of Server 1 Next, the internal configuration of the server 1 will be described with reference to FIG.

  As illustrated in FIG. 11, the server 1 includes at least a control unit 11, a communication unit 14, and a database 12.

  The communication unit 11 is a processing unit or device that transmits and receives information to and from the browser terminal 2.

  The database 12 is constructed using a database application program, and stores management information such as IP address registration, information on the matrix display screen, a program for executing processing in response to an instruction from the browser terminal 2, and the like. It is.

  For example, the database 12 stores IP address allocation information for each segment. The database 12 stores the IP address allocated on the matrix 1-2 for each segment, and can store the usage status of the IP address. The database 12 also stores the prefix value of the matrix 1-2, the name of the segment assigned the IP address on the matrix 1-2, identification information, and the like.

  The control unit 11 manages the functions of the server 1 that manages the display, registration, deletion, movement, and the like of the allocation status of IP addresses allocated in prefix units on the matrix.

  The main functions of the control unit 11 include at least an IP / prefix calculation unit 13, an IP duplication determination unit 138, an addition unit 134, a detail display unit 135, a deletion unit 136, and a movement unit 137. Further, the IP / prefix calculation unit 13 includes at least a display area moving unit 131, an enlarged display changing unit 132, and a reduced display changing unit 133.

  When the IP / prefix calculation unit 13 gives screen information to the browser terminal 2 and receives an operation instruction from the browser terminal 2, the IP / prefix calculation unit 13 performs processing according to the operation instruction.

  The display area moving unit 131 moves the area of the IP address space to be displayed on the browser terminal 2 when the display area movement buttons 1-3 and 1-4 are pressed and a button pressing signal is received from the browser terminal 2. is there. When the display area moving button 1-3 is pressed, the display area moving unit 131 moves so as to display a small area of the IP address space, and when the display area moving button 1-4 is pressed, the IP address space is displayed. Move to display a larger area.

  The enlarged display change unit 132 increases the prefix value of the matrix 1-2 displayed on the browser terminal 2 when the enlarged display change button 1-5 is pressed and a button press signal is received from the browser terminal 2. is there.

  When the reduced display change button 1-6 is pressed and a button press signal is received from the browser terminal 2, the reduced display change unit 133 decreases the value of the prefix of the matrix 1-2 displayed on the browser terminal 2. is there.

  The adding unit 134 registers an IP address space in segment units. The adding unit 134 receives from the browser terminal 2 that the area selected on the matrix 1-2 is to be added, and registers this area as an IP address area to be allocated to the segment.

  The detailed display unit 135 gives detailed information of the designated area on the matrix 1-2 to the browser terminal 2 for display.

  The deletion unit 136 deletes the IP address space in segment units. The deletion unit 136 receives information to delete the area selected on the matrix 1-2 from the browser terminal 2, and deletes registration of the segment of the IP address in this area. Note that the deletion unit 136 may delete the entire IP address area of the designated segment on the matrix 1-2, or may delete a part thereof.

  The moving unit 137 moves the IP address segment area to another area. When the movement unit 137 receives the fact that the area selected on the matrix 1-2 is moved from the browser terminal 2 and the designation of the movement destination area, the movement unit 137 moves the selected area to the movement destination area.

  The IP duplication determination unit 138 refers to the usage status of the IP address stored in the database 12 when allocating the IP address on the matrix 1-2, and the IP address area designated by the browser terminal 2 for the current allocation. It is determined whether there is no overlap. In addition, when the IP address is allocated in duplicate, the IP duplication determination unit 138 displays a dialog or the like indicating that the allocation is not correctly performed on the browser terminal 2.

(A-2) Operation of First Embodiment Next, the operation of the address information management process of the first embodiment will be described with reference to the drawings.

  FIG. 2 is an explanatory diagram for explaining the relationship of prefixes of IP addresses displayed in the matrix 1-2.

  In FIG. 2, a matrix 1-2 represents a case where the prefix is “/ 24”. Therefore, one line is an IP address space of “/ 24”. When the IP address space of one line is divided in units of prefixes, it is as shown in FIG.

  That is, in FIG. 2, 1 升 represents the IP address space of “/ 29”. When two “/ 29” s are gathered side by side, the size becomes “/ 28”. Furthermore, when two “/ 28” are gathered horizontally, “/ 27” is obtained. In the same way, two “/ 27” are collected to obtain “/ 26”, two “/ 26” are collected, “/ 25”, and two “/ 25” are collected to “/ 24”.

  Further, in the case of a 32 × 32 matrix, since one row indicates the IP address space of “/ 24”, the space for two rows indicates the IP address space of “/ 23”. Similarly, when two spaces of “/ 23” for two lines are gathered, an IP address space of “/ 22” is indicated.

(A-2-1) IP address space display change With the enlargement display change button 1-5 and the reduction display change button 1-6, the IP address space expressed by 1 in the matrix 1-2 can be changed.

  In the following, with reference to FIG. 2, a process for changing the IP address space expressed by 1 in the matrix 1-2 will be described.

  To increase the IP address prefix value, the user presses the expanded expression change button 1-5.

  A signal of the enlarged display change button 1-5 from the browser terminal 2 is given to the server 1. In the server 1, the enlarged display changing unit 132 of the IP / prefix calculating unit 13 changes the prefix value of the displayed IP address space, and gives the display screen of the changed size to the browser terminal 2.

  For example, the example of FIG. 2 shows a case where the prefix is “/ 24”. By pressing the enlarged expression change button 1-5, the prefix becomes “/ 25”. As a result, one line becomes an IP address space of “/ 25”.

  When the IP address space of one line “/ 25” is divided in prefix units, 1 升 represents the IP address space of “/ 30”, 2 升 is “/ 29”, and 4 升 is “/ 28”. ,..., 32 升 represents the IP address space of “/ 25”. If the prefix value increases, the number of hosts that can be expressed in 1 升 decreases, so detailed display becomes possible.

  For example, in the case of IPv4, “/ 19” is expressed in the entire 32 × 32 matrix 1-2, but “/ 20” is expressed by pressing the enlargement expression change button 1-5 once. It will be. That is, the number of hosts in the entire matrix 1-2 can be changed from “8192” to “4096”.

  On the other hand, when decreasing the IP address prefix value, the user presses the reduced expression change button 1-6.

  Also in this case, the signal of the reduced display change button 1-6 from the browser terminal 2 is given to the server 1. In the server 1, the reduced display changing unit 133 of the IP / prefix calculating unit 13 changes the prefix value of the displayed IP address space, and gives the display screen of the changed size to the browser terminal 2.

  For example, in the example of FIG. 2, when the prefix is “/ 24”, the prefix is changed to “/ 23” by pressing the reduced expression change button 1-6. As a result, one line becomes the IP address space of “/ 23”.

  When the IP address space of one line “/ 23” is divided in prefix units, 1 升 represents the IP address space of “/ 28”, 2 升 is “/ 27”, and 4 升 is “/ 26”. .., 32 升 represents the IP address space of “/ 23”. Note that if the prefix value is reduced, the number of hosts that can be expressed in 1 升 increases, so a wide range of display is possible.

  For example, in the case of IPv4, “/ 19” is expressed in the entire 32 × 32 matrix 1-2, but “/ 18” is expressed by pressing the reduced expression change button 1-6 once. It will be. That is, the number of hosts in the entire matrix 1-2 can be changed from “8192” to “16384”.

  The enlarged display can be changed until 1 升 becomes “/ 31” in the case of IPv4 and “/ 127” in the case of IPv6. The reduced display can be changed for both IPv4 and IPv6 until the entire matrix 1-2 becomes “/ 1”. In this case, all the spaces that can be expressed by IP addresses are displayed on the matrix 1-2.

(A-2-2) IP Address Registration Processing Next, processing when a new IP address is allocated will be described with reference to FIG. FIG. 3 is an explanatory diagram for explaining a new registration process for each IP address prefix. FIG. 4 is a flowchart showing a new registration process for each IP address prefix.

  In FIG. 3, the user selects the area 3-1 to be allocated on the matrix 1-2 displayed on the browser terminal 2 (S101), and registers the IP address allocated to the segment in prefix units.

  Here, for the selection of the allocation area, for example, the area 3-1 to be allocated in the area of the matrix 1-2 is selected by the operation unit (for example, a mouse or a keyboard) of the browser terminal 2. For example, when operating with a mouse, it is possible to apply a method of selecting an area 3-1 to be allocated while pressing the left click from the first to the last basket.

  In addition, at the time of new registration, the selected area can be registered by selecting an add button displayed on the display screen of the browser terminal 2 (S102).

  For example, when an operation is performed with a mouse, a method of selecting the “add” menu by causing the “add” menu 3-1 to be displayed by right-clicking the mouse can be applied.

  The browser terminal 2 gives “addition” selected by the user and the selected area 3-1 to the server 1, and the server 1 acquires the additional area information (S103). When selecting the “Add” button, information regarding a segment to which an IP address is allocated in prefix units may be input, and at that time, the browser terminal 2 also provides the server 1 with information regarding the input segment. .

  In the server 1, the adding unit 134 of the IP / prefix calculation unit 13 allocates the IP address of the selection area 3-1 received from the browser terminal 2 to the segment in prefix units and stores it in the database 12.

  Here, the IP address that can be added by the adding unit 134 needs to be one prefix, and allocation across a plurality of prefixes is not permitted. That is, it is necessary to allocate IP addresses in prefix units.

  Therefore, when allocating IP addresses in prefix units, it is necessary to determine whether or not an area to be allocated (for example, an area selected by a mouse) is a correct prefix.

  Therefore, when a new IP address is allocated in prefix units, the IP duplication determination unit 138 determines whether the area is correctly designated (S104).

  Here, as the determination method by the IP duplication determination unit 138, since it is necessary to allocate the IP address area in units of prefixes, various methods can be applied as long as it can be determined whether the selection is correct.

  The first embodiment exemplifies a case where the IP duplication determination unit 138 determines that the selected prefix is correct when the following two conditions are satisfied, and otherwise determines that it is not correct.

(Condition 1) In the case of a prefix of 2 ^N cells with less than 1 line, the start position satisfies the following formula (N and M are natural numbers)
Start position = 2 ^N square x M
(Condition 2) When there are one or more rows, all 2 ^N rows are selected (N is a natural number). Furthermore, the following calculation formula should be satisfied (IP address XOR of start position ((X >> P) << P) == 0)
X: 0xFFFF for IPv4
For IPv6, 0xFFFFFFFFFFFFFFFF
P: (32-prefix) for IPv4
For IPv6, (128-prefix).

  In addition to the above two conditions, the IP duplication determination unit 138 also needs a condition that “the area painted with the mouse does not include wrinkles other than white”. In other words, this is a condition that it has not been allocated.

  FIG. 5 shows a case where IP addresses (prefixes) are allocated on the matrix 1-2. In FIG. 5, 4-1 to 4-5 indicate selection of correct prefixes, and 4-6 to 4-9 indicate selection of incorrect prefixes.

  For example, in FIG. 5, 4-1 selects the region from the second cell to the first cell, and satisfies the condition that the region is selected in units of prefixes. Also in the case of 4-2 to 4-4, the condition is satisfied because the selected area is selected for each prefix.

  On the other hand, in 4-6, the 2nd area is selected, but since the start position is the second area, the area is not selected in units of prefixes, and matching is not achieved. Therefore, for the area selection 4-6, the IP duplication determination unit 138 determines that the IP address area is not correctly selected.

  If the IP duplication determination unit 138 determines that the prefix is correctly selected, the adding unit 134 allocates the selected area to the segment and stores it in the database 12 (S105).

  On the other hand, if the IP duplication determination unit 138 determines that the information is not correct, a dialog indicating that the information is not correct is given to the browser terminal 2 (S106), and the browser terminal 2 displays the dialog (S107) to call attention.

(A-2-3) Detailed Display, Deletion, and Movement Next, processing for displaying detailed information and deleting a region selected on the matrix 1-2 will be described.

  FIG. 6 is an explanatory diagram illustrating detailed information display and area deletion processing. FIG. 7 is a flowchart showing the detailed information display process. FIG. 8 is a flowchart showing the area deletion processing.

  As described above, when registration is performed in units of prefixes of IP addresses on the matrix 1-2, the adding unit 134 displays, for example, the IP address area allocated in units of prefixes in black (hatched display) and is allocated. For example, an area that is not displayed is displayed in white. As a result, the user can determine whether the area is allocated.

  In addition, the user can select a region of the matrix 1-2 with an operation unit (for example, a mouse). For example, the selection of the area on the matrix 1-2 is performed while pressing the left click from the first to the last selection of the selection area. At this time, the area selected by the mouse is painted.

  In FIG. 7, the user selects an area 5-1 on the matrix 1-2 with an operation unit such as a mouse (S201), and selects a “detail” button 5-2 (S202). The browser terminal 2 gives the selected information to the server 1.

  The selection method of the “detail” button is not particularly limited, and various methods can be widely applied. For example, the “detail” menu is displayed by right-clicking the mouse, and the user can select the “detail” menu. The method of selection can be applied.

  Here, a case where an area where an IP address has already been assigned in prefix units is selected and right-clicked is illustrated in a state where the area selected by the mouse is not painted.

  In the server 1, the detailed display unit 135 of the IP / prefix calculation unit 13 reads the detailed information of the selected area from the database 12 (S203), and transmits the read detailed information to the browser terminal 2 (S204). Thereby, the browser terminal 2 can display the detailed information of the said area | region. Here, as the detailed information, information such as the IP address and prefix of the selected area can be applied.

  In FIG. 8, the user selects an area 5-1 on the matrix 1-2 with an operation unit such as a mouse (S301), and selects a “delete” button 5-2 (S302). The browser terminal 2 gives the selected information to the server 1.

  For example, as the method for selecting the “delete” button, various methods can be widely applied as in the case of the “detail” button. Here, a method is adopted in which an area that has already been allocated is selected with no mouse painted area, a “delete” menu is displayed by right-clicking, and the user selects the “delete” menu.

  In the server 1, the deletion unit 136 of the IP / prefix calculation unit 13 refers to the database 12 and releases the segment in which the IP address of the selected area is allocated in prefix units (S303).

  Next, the process of moving an already allocated IP address area will be described with reference to FIGS.

  FIG. 9 is an explanatory diagram for explaining the process of area movement. FIG. 10 is a flowchart showing the region movement process.

  For example, the user selects the area 6-1 on the matrix 1-2 with the operation unit such as a mouse (S401), selects the “move” button 6-2 (S402), and sets the movement destination of the selected area. A certain destination area 6-3 is selected (S403).

  Here, various methods can be widely applied to the selection method of the “move” button. In the first embodiment, when an area to which an IP address has already been assigned has been selected in a state where the area selected by the mouse has been painted, the example illustrated in FIG. 9 is illustrated. As shown, the “Move” menu is displayed. It is assumed that the user selects this “move” menu.

  When the server 1 acquires movement area information related to area movement from the browser terminal 2 (S404), the movement unit 137 of the IP / prefix calculation unit 13 moves the selected already allocated area to the movement destination area. .

  At this time, since the IP address is assigned in units of prefixes, it is necessary to determine whether or not the destination area is a correct prefix.

  Therefore, the IP duplication determination unit 138 determines whether or not the destination area is a correct prefix (S405). Note that the same method as in the case of the new registration (addition) process can be applied to the determination method by the IP duplication determination unit 138.

  When the IP duplication determination unit 138 determines that the prefix has been correctly selected, the moving unit 137 allocates the selected already allocated area to the destination area and stores it in the database 12 (S406). .

  On the other hand, if the IP duplication determination unit 138 determines that the information is not correct, a dialog indicating that the information is not correct is given to the browser terminal 2 (S407), and the browser terminal 2 displays the dialog (S408) to call attention.

  At this time, the movement unit 137 compares the number of folds in the area 6-1 already allocated in FIG. 9 with the number of folds in the movement destination area 6-3. If it is small, it means that the number of allocated IP addresses is reduced. In that case, the moving unit 137 can also alert the user by displaying a warning dialog.

(A-3) Effects of the First Embodiment As described above, according to the first embodiment, by using the expression of the matrix, the following effects can be obtained and the convenience of the user can be expected to be improved. .

(1) By expressing the situation allocated in prefix units by color coding on the matrix, it is possible to easily grasp a vacant space.

(2) Since the IP address space displayed on the matrix can be changed by the display area movement buttons 1-3 and 1-4, the situation can be easily grasped.

(3) The range of the prefix displayed on the matrix can be changed by the enlargement display change button 1-5 and the reduction display change button 1-6, and the details can be easily grasped and the whole can be grasped. You can also.

(4) By selecting an area to be allocated on the matrix with an operation unit (for example, a mouse), allocation can be easily performed in prefix units.

(5) Detailed confirmation and deletion can be easily performed by a menu displayed by right-clicking an area already allocated on the matrix.

(6) It is possible to easily move by a menu displayed by selecting a free area on the matrix and right-clicking an already allocated area.

(B) Other Embodiments In the above-described first embodiment, the case where the display screen is a matrix display has been exemplified. However, if the IP address can be allocated in units of prefixes, the display may not be a matrix display.

  In the first embodiment described above, the server 1 implements various processes by so-called software processing. For example, the server 1 has a hardware configuration such as a CPU, ROM, RAM, EEPROM, etc., like a normal server, and the CPU reads a processing program stored in the ROM and executes the processing program using necessary data. By doing so, the various processes described above can be realized.

  In the first embodiment described above, the server is described as being physically one device. However, if the various functions of the server described in the first embodiment can be realized, the server is a single device. A plurality of devices that execute various functions may be distributed on the network.

  DESCRIPTION OF SYMBOLS 1 ... Server, 11 ... Control part, 12 ... Database, 13 ... IP / prefix calculation part, 131 ... Display area movement part, 132 ... Enlargement display change part, 133 ... Reduction display change part, 134 ... Addition part, 135 ... Details Display unit 136 ... Delete unit, 137 ... Move unit, 138 ... IP duplication determination unit, 1-1 ... Row, 1-2 ... Matrix, 1-3 and 1-4 ... Display area move button, 1-5 ... Enlarge Display change button, 1-6... Reduced display change button.

Claims (7)

In an address information management system for managing IP addresses used in a network and displaying an IP address allocation status on a terminal,
Storage means for storing IP address space in a matrix format and storing information relating to a screen for displaying the status of IP addresses allocated in prefix units;
Screen display means for giving the screen to the terminal for display;
When an instruction to change the IP address space expressed in the matrix format is received from the terminal, the IP address space on the screen is changed, and information on the screen expressing the changed IP address space is stored in the storage means. An address information management system comprising: an IP address space changing means for storing.   2. The IP address space changing means, when receiving an instruction to enlarge or reduce a display area from the terminal, recalculates the number of IP addresses of one element constituting the matrix. The address information management system described.   3. The address information management system according to claim 1, wherein the IP address space changing unit moves the display area on the screen when receiving an instruction to move the display area from the terminal.   When an allocation instruction, a deletion instruction, a detailed information display instruction or a movement instruction is received for the area selected in prefix units from the terminal, the registration, deletion, detailed information display or movement to the movement destination area is performed for the selected area. The address information management system according to any one of claims 1 to 3, further comprising processing means for performing the following.   5. The address information management system according to claim 4, further comprising determination means for determining whether or not the area to which an IP address is allocated is selected in prefix units. In an address information management apparatus for managing IP addresses used in a network and displaying an IP address allocation status on a terminal,
Storage means for storing IP address space in a matrix format and storing information relating to a screen for displaying the status of IP addresses allocated in prefix units;
Screen display means for giving the screen to the terminal for display;
When an instruction to change the IP address space expressed in the matrix format is received from the terminal, the IP address space on the screen is changed, and information on the screen expressing the changed IP address space is stored in the storage means. An address information management device comprising: an IP address space changing means for storing. In an address information management program of an address information management apparatus for managing IP addresses used in a network and displaying an IP address allocation status on a terminal,
A storage unit that stores information related to a screen that displays an IP address space in a matrix format and displays a status of an IP address allocated in prefix units,
Computer
Screen display means for giving the screen to the terminal for display;
When an instruction to change the IP address space expressed in the matrix format is received from the terminal, the IP address space on the screen is changed, and information on the screen expressing the changed IP address space is stored in the storage means. An address information management program which functions as an IP address space changing means to be stored.

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