JPH0879248A - Network address management device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a network address management device capable of efficiently setting an address for a network address management device that manages addresses necessary for connecting an information processing device to a network and performing packet communication. The purpose is to do. [Constitution] The packet monitoring unit 15 and the operation monitoring unit 17 detect the used address, and set the address information for determining the unused address managed by the address information management unit 12 according to the detection result. When an unregistered address or a duplicate address is detected at 15, the address setting unit 14 and the duplication processing unit 16 set an address, send an e-mail or a message based on the address information of the address information management unit 12, and unregister the address. Early resolution of network failures caused by address setting and address duplication.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network address management device, and more particularly to a network address management device for managing an address required for connecting an information processing device to a network and performing packet communication.

[0002] In recent years, such networks tend to expand rapidly, and in order to make these information processing devices usable, it is necessary to set unique addresses in the information processing devices. However, the number of addresses itself is finite, and it is inevitable that the number of addresses will fall short of being simply added in accordance with the addition of information processing devices.
Therefore, it is necessary to enable reuse of addresses.

[0003]

2. Description of the Related Art FIG. 8 shows a schematic configuration diagram of a network system. Information processing devices WS1 to WSN such as workstations are connected to the network 18, and information communication is performed for each packet via the network 18 between the information processing devices WS1 to WSN. At this time, an IP address for identifying the network 18 to which the own device belongs and a MAC address for identifying the own device are set in the information processing devices WS1 to WSN, respectively, and communication is performed in each of the information processing devices WS1 to WSN. It is performed based on the set IP and MAC addresses.

In the past, most of the management of addresses for these information processing devices WS1 to WSN was done manually. In addition, the mechanized (automated) function is also a function of initial setting (assignment) of an address, and a function of determining an unused address or reusing an address is not included.

[0005]

However, in the conventional network, whether or not the address is unused is not managed in particular, and when a new setting is made, a shortage of addresses occurs, and the unused addresses are rushed to manually. Since I was looking for it, there was a problem such as duplicate addresses being set without sufficient investigation and confirmation. In addition, there is a problem that it takes time to conduct a strict survey. In the worst case, there is a problem that an address is arbitrarily set, which causes the network to not function.

The present invention has been made in view of the above points, and an object thereof is to provide a network address management device capable of efficiently setting an address.

[0007]

FIG. 1 shows the principle of the present invention. The packet monitoring means 1 monitors packets on the network 2 and detects addresses used.

The address management means 3 manages the usage state of the address according to the detected address of the packet monitoring means 1.

According to a second aspect of the present invention, the packet monitoring means 1 is configured to have an operation monitoring means for transmitting a packet for confirming the usage status to the network and detecting a used address according to a response to the packet.

According to a third aspect of the present invention, when the detected address detected by the packet monitoring means 1 is an unmanaged address, the address management means 3 sets the address in a network within a predetermined range specified in advance. The configuration has a setting means.

In the present invention, the address management means 3 has a duplication processing means for setting a new address for another requester when another requester overlapping the managed address is detected.

According to a fifth aspect of the present invention, the duplication processing means is configured to send the information indicating the duplication of the address to the device having the duplicated address.

[0013]

According to the first aspect of the present invention, the packet monitoring means monitors the packet on the network to detect the used address, and the address management means manages the address detected by the packet monitoring means. As a result, an address that has not been used for a long time can be detected, and by reusing this address, the address can be effectively used.

According to the second aspect of the present invention, it is possible to transmit a packet for confirming the usage status to the network, detect the address for which the response is made, as an address in the usage status, and use the unused address according to the detection of the usage address. Can be detected.

According to the third aspect, since the address can be set to the network in the range designated in advance by the address setting means, the degree of freedom in setting the address can be improved.

According to the fourth aspect, an address which is not registered in the address management means for another requester who makes a network connection request due to an address overlapping the address managed by the address management means by the duplication processing means. Since it is reset, network failure due to address duplication can be prevented.

According to the fifth aspect, the duplicate processing means can request the setting of a new address to another requester at the same address, so that the other requester recognizes the duplication of the address, It is possible to set a new address and prevent duplication of addresses, and thus prevent network failure due to duplication of addresses.

[0018]

FIG. 2 is a block diagram of an embodiment of the present invention. The network address management device 11 of this embodiment is
Address information storage unit 12 having various information required for network address management, management of address information management table, address information management control unit 13 for determining whether or not unused, information necessary for address setting The address setting unit 14 for setting, the packet monitoring unit 15 for acquiring all packets passing through the network, the address resetting, and the occurrence of a packet from the old requester for the reset address At the same time, the duplication processing unit 16 for notifying the network administrator of that fact and the operation monitoring unit 17 for sending an operation monitoring packet and processing the response thereof are configured, and are connected to the network 18 and are connected to the network 18. The network addresses of the workstations WS1 to WSN are managed.

The address information management unit 11 includes a host name, an IP address and a MA for the information processing devices WS1 to WSN.
In addition to the C address, it has unused period information (), last use date information (), last response date information (), and unused judgment information (), and the last use date information or last response date information is the final It is the date information that can be recognized on the network, and as an example, it is determined whether or not it is unused depending on the number of days specified by this date and the unused period information or whether the date is exceeded.

The address information management function unit 12 manages the address information management unit 11 to read and update information, and holds the following various information. In addition, this function checks various kinds of information, makes a judgment of unused, and records the information.

FIG. 3 shows an explanatory diagram of the address information management unit 11. FIG. 3A shows the contents of the address information management table 11a. The address information management table 11a is used period information indicating that the address requester can determine that the address is unused when it is set, and the last use date indicating the date when the address passes through the network. information,
There is a case where the workstations WS1 to WSN are simply not communicating, and the date to be updated when there is a response when the operation confirmation packet is sent to the workstations WS1 to WSN in order to grasp this. Based on the combination of the last response date information indicating the above, and the above information, if it is determined that it is unused, it is recorded as unused if not unused, unused determination information, and when the corresponding address is reset. , Old requester information indicating information about the immediately preceding user, and new requester information indicating information about the user when setting the corresponding address.

The unused period information may be determined to be unused when the user of the information processing device specifies the unused period at the time of setting and it is not used at all within this period. . If not specified, this apparatus has an omitted period, and this period is specified.

As the last usage date information, all packets on the network are monitored by the packet monitoring function, and the date of the last monitoring can be stored for each address to grasp the usage status.

The final response date information is a function for inquiring whether the information processing apparatuses WS1 to WSN registered in the address information management table 12a by the operation monitoring unit 16 are regularly used. If the response is correct, the date is stored and the usage status is grasped.

By combining these pieces of information,
It is possible to determine whether or not the information processing devices WS1 to WSN are used. Information indicating the used / unused determination result is unused determination information, and the unused determination information records information indicating that it is unused. As a result, when an address setting request is issued from a new information processing device, the unused determination information can be retrieved and the address can be reused, and the address can be effectively used.

If a packet from an unregistered information processing device is received and is not in the address information management unit 12, the address setting unit 14 automatically manages the management table 12.
registered in a. FIG. 3B is a notation of an address management range table used at the time of registration, in which a start address and an end address are stored and only an address between the start address and the end address is managed. .

FIG. 4 shows a block diagram of the operation monitoring unit 17. The operation monitoring unit 17 reads all addresses from the address information management table and generates a monitoring packet for checking the operation for all addresses.
a, a monitoring packet sending unit 17b for sending the monitoring packet to the network 18, a response packet receiving unit 17c for receiving a packet reply to the monitoring packet within a fixed time after sending the monitoring packet, and address information about the responding address The management table 12a includes a final response date setting unit 17d that updates the final response date information to the date of the current day. Further, the operation monitoring unit 17 is regularly operated in order to suppress unnecessary communication.

Although the address determined to be unused is reset, the duplication processing unit 16 is set in case the information processing apparatus determined to be unused is recovered.

FIG. 5 shows a block diagram of the address setting unit 14, the packet monitoring unit 15, and the duplication processing unit 16. The packet monitoring unit 15 compares the addresses acquired by the packet acquisition unit 15a that acquires all the packets on the network and the packet acquisition unit 15a with the information stored in the address table 15b and the registered address, and the registered address is detected. In the case where the unregistered address is detected, the address processing unit 16 is notified, and when the unregistered address is detected, the address setting unit 14 is notified of the corresponding address.
It is composed of The duplication processing unit 16 reads the information of the old requester information and the new requester information from the management table 12a based on the corresponding address and acquires the requester information acquisition unit 16a, the new requester, the old requester, and the old requester. The error notification unit 16b is configured to send a mail or an interrupt message indicating that the addresses are duplicated to all or some of the managers of the devices used.

The address setting unit 14 checks the new address within the address management range set as shown in FIG. 3B, and the address information management unit 14a checks the address management range when the new address is within the address management range. It is configured by a setting information generation unit 14b that sets / registers an address based on 12 pieces of information.

FIG. 6 shows a block diagram of the address information management control unit 13. The address information management control unit 13 includes an information registration unit 13a that registers information in the address information management unit 12, an information reference unit 13b that refers to information registered in the address information management unit 12, and an unused determination unit that determines an unused address. 13c, which is composed of an information maintenance unit 13d that publishes information to the administrator and sets information by the administrator,
According to requests from the address setting unit 14, the packet monitoring unit 15, the duplication processing unit 16, and the operation monitoring unit 17, the management table is registered and referred to. Moreover, the management table 12a is periodically provided.
The unused period and the last use date and the response date are checked to determine whether the address is unused or not, and the fact is recorded in the management table 12a, and a new address request is made. If this is the case, this unused address is assigned.

FIG. 7 shows an operation explanatory diagram of an embodiment of the present invention.

The address information management table 12a has unused period information, last used date information, last response date information and unused determination information in addition to the host name, IP address and MAC address of the information processing device. It is possible to determine whether or not it is unused based on these information.

It is necessary to strictly grasp whether or not the address is in use, and in order to realize this, the operation monitoring unit 17 performs dynamic monitoring for sending a monitoring packet to each information processing device, and packet monitoring. The monitoring unit 15 performs both static monitoring for monitoring packets passing through the network 18 (step S1 _-1 ). If the monitored packet is not in the address information management table 12a, the address setting unit 14 automatically registers it in the management table 12a. During registration registers confirmed to be within the scope of the management range table 12b (step S1 _-2, S1 _-3).

In the unlikely event that duplication is detected in the address reset by the duplication processing section 16, all the new requesters, the old requesters, and the managers of the devices used by the old requester are found from the address information management table 12a. By sending mail or interrupt message to the effect that the address is duplicated, it is possible to resolve the problem early. The old requester's MAC address is used to detect duplicates. As described above, according to this embodiment, all packets on the network 18 are monitored in order to solve the shortage of addresses, and the address information management table 12a is used to
Whether it is in use or in an unused state is sequentially managed, and when it is determined that it is not used, it is reallocated to another information processing device (steps _S1-4 , _S1-5 ).

According to the present embodiment, it is possible to monitor whether or not an address, which has been set once, is unused, determine that it is unused, and set it again in another information processing device.
The limited address shortage can be eliminated, and the address duplication processing function can eliminate the address duplication at an early stage, thereby enabling early resolution of the failure.

The network address management device of this embodiment is, for example, a telenet server, a mail server,
It can also operate on a server that is frequently used, such as a news server, and in this case, a dedicated device is not always necessary, and a management table and a judgment technique can be added to function as a management device.

[0038]

According to the first aspect of the present invention, the packet monitoring means monitors the packet on the network to detect the used address, and the address management means manages the address detected by the packet monitoring means. By doing so, it is possible to detect an address that has not been used for a long period of time, and by reusing this address, it is possible to effectively use the address.

According to the second aspect, it is possible to transmit a packet for confirming the usage status to the network, detect the address for which the response is made, as an address in the usage status, and use the unused address according to the detection of the usage address. It has the feature that it can detect

According to the third aspect, since the address can be set to the network in the range designated in advance by the address setting means, there is a feature that the degree of freedom in setting the address can be improved.

According to the present invention, the address which is not registered in the address management means for another requester who makes a network connection request due to an address which overlaps with the address managed by the address management means by the duplication processing means. Since it is reset, it has features such as preventing network failure due to address duplication.

According to the fifth aspect, since it is possible to request another requester at the same address to set a new address by the duplication processing means, the other requester recognizes the duplication of the address, It has a feature that a new address can be set and the duplication of the address can be prevented, so that the network failure due to the address duplication can be prevented.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a block diagram of an embodiment of the present invention.

FIG. 3 is an explanatory diagram of an address information management unit according to an embodiment of the present invention.

FIG. 4 is a block diagram of an address information management control unit according to an embodiment of the present invention.

FIG. 5 is a block diagram of an essential part of an embodiment of the present invention.

FIG. 6 is a block diagram of an operation monitoring unit according to an embodiment of the present invention.

FIG. 7 is an operation explanatory diagram of the embodiment of the present invention.

FIG. 8 is a schematic configuration diagram of a network system.

[Explanation of symbols]

 1 packet monitoring means 2 network 3 address management means 11 network management device 12 address information management unit 13 address information management control unit 14 address setting unit 15 packet monitoring unit 16 duplication processing unit 17 operation monitoring unit 18 network WS1 to WSN information processing device

Claims (5)

[Claims] 1. A packet monitoring means for monitoring a packet on a network and detecting a used address, and an address management means for managing a use state of the address according to a detected address of the address detecting means. A network address management device having. 2. The packet monitoring means includes an operation monitoring means for transmitting a packet for confirming a usage status to the network and detecting a used address according to a response to the packet. Network address management device. 3. The address management means, when the detected address detected by the packet monitoring means is an unmanaged address, has address setting means for setting the address in a network in a predetermined range specified in advance. The network address management device according to claim 1 or 2. 4. The address management means has duplication processing means for setting a new address to another requester when another requester overlapping the managed address is detected. The network address management device according to any one of claims 1 to 3. 5. The network address management device according to claim 4, wherein the duplication processing means transmits information indicating an address duplication to a device having the address duplication.