JP3275957B2 - Automatic IP address generation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically generating an IP address in a network including a ring network, and more particularly, to a method for storing a node address allocated to each node on a ring network and a sub-network address between nodes. How to automatically generate.

[0002]

2. Description of the Related Art In a network system in which a new terminal device (node) is to be connected to a network, it is necessary to generate and assign IP address information to a newly introduced node. is there. For example, Japanese Unexamined Patent Publication No. Hei 9-1628787 entitled "Method and Network System" discloses that a host computer cannot accept a download request by BOOTP performed simultaneously with turning on a newly installed terminal device. The host computer receives the download request by inputting the address, the host IP address of the connection destination, and the server name. The host computer that has received the download request exchanges with the terminal device by ARP in the address resolution information generation means, and the terminal IP address is stored in the ARP table. And a physical address set, and a corresponding server program is downloaded to a terminal device. The host computer of this system registers the new setup information (terminal IP address, terminal physical address, host IP address, server name) in the storage file in the setup information generating means started after the ARP reply in the above operation. It is configured.

In this type of IP address assignment, it is important to automatically assign an IP address because the number of nodes increases and the assignment operation becomes complicated as the size of the network increases. is there.

As a method of automatically generating an IP address, an address generation rule for generating a node address of each node on a network and a sub-network address between nodes is determined in advance, and a node is generated according to the address generation rule. Patent No. 271322 for automatically generating addresses and sub-network addresses
No. 6, "Method of Automatically Generating IP Address in Network".

[0005]

SUMMARY OF THE INVENTION Patent No. 2713226
In the conventional method for automatically generating an IP address in the network, the IP address on the ring network is
The present invention relates to a method of automatically generating an address and assigning it to each node. However, it has not been possible to automatically generate an IP address value for a node including a node outside a ring network connected to a ring network.

(Object) It is an object of the present invention to provide an automatic IP address generation method for automatically generating an IP address including a node constituting a ring network and a node connected to the node.

[0007]

An automatic IP address generation system according to the present invention comprises a plurality of nodes connected in a ring, and a node outside the ring is connected to at least one of the nodes on the ring. In an IP address automatic generation method for generating a node address for each node and a sub-network address between nodes as a multi-digit IP address of each node in the network, a node ID previously assigned to each node
The node address is generated by assigning a node ID to a predetermined digit, and a sub-network address between nodes connected in a ring shape is
A sub-network address between a node on the ring and a node on and outside the ring is generated by allocating an addition value of a node ID and the number of nodes on a network to the digit. It is characterized by being generated by assigning a serial number from the sum of m times (m: a natural number of 2 or more) +1 and the number of the above nodes.

The IP address is composed of a four-digit value, and the first and second digits are assigned a value determined by the network, the third digit is assigned a value based on the node ID, The fourth digit is characterized in that a fixed value is assigned for the node address and a value indicating the direction between nodes is assigned for the sub-network address. The value of the fourth digit in the subnetwork address is assigned different values depending on whether the node on the ring is clockwise or counterclockwise, and the subnetwork address between a node on the ring and a node outside the ring is on the ring. Different values are assigned depending on whether the direction is the node direction or not.

Further, the order of the serial numbers is clockwise or counterclockwise of the nodes on the ring or the order of introducing the nodes.

(Operation) An IP address is an address composed of a plurality of digits, and an identifiable value for each node is assigned to a predetermined digit other than a digit having a common value used by a user. The IP address includes a node address for each node and a subnetwork address between nodes. By using a node ID assigned to each node in advance, a plurality of nodes connected in a ring and all nodes in a network in which at least one of the nodes on the ring is connected to a node outside the ring Automatically assign the IP address of the node. The value of the predetermined digit of the node-to-node sub-network address needs an allocation rule that can avoid duplication with other IP addresses.

[0011] As the digit value, a node ID is a node ID, a node-node subnetwork address is a node ID + the number of nodes, and a subnetwork address between a node on the ring and a node on and outside the ring is: By serially assigning the node ID + twice the number of nodes on the network + 1 sequentially, the IP address is automatically assigned without error.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION (Structure of Embodiment) An embodiment of a method for automatically generating an IP address in a network according to the present invention will be described.

FIG. 1 is a diagram showing an example of an automatic IP address generation system for realizing the present invention. The automatic IP address generation system includes an input device 1 such as a keyboard,
A data processing device 2 that operates under program control, a storage device 3 that stores information, and outputs IP address information to a display device or a printing device, and notifies or sets each node on a network or the like. And an output device 4 for outputting the same. Also, the data processing device 2
Has an address generation unit 21, and the storage device 3 has an address storage unit 31.

Each device of the present system operates as follows.

First, existing terminal devices (nodes) connected to the network are provided with serial node IDs. Whenever a newly introduced node occurs, the next number of the node is assigned to the node. A node ID is specified, and the total number of nodes in the system including the node is input from the input device 1. In the address storage unit 31 of the storage unit 3,
The node ID, node address, and subnetwork address of each node before the new introduction of the node are stored. The address generation unit 21 uses the data in the address storage unit 31 of the storage device based on the total number of nodes input from the input device 1 to determine the node address of each node and the numerical value of a predetermined digit of the subnetwork address in detail below. Each digit in the address storage unit 31 is rewritten by calculation according to the generation rule.

Such an operation is performed every time a node is added. Each node, node address, and subnetwork address obtained by the address generation unit 21 are stored in the address storage unit 31, and the latest address information is always stored. Is done.

(Operation of Embodiment) Next, FIGS. 1 and 2
The IP address generation operation of the present embodiment will be described in detail with reference to FIG.

In the present embodiment, as a basic configuration of a network, a plurality of nodes constitute a ring network, and the plurality of nodes have a network configuration in which another node outside the ring is connected. I have.

FIG. 2 is a diagram showing a configuration example of the network according to the present embodiment. In the example of this network, first to fourth nodes 1 to 4 are connected in a ring shape, and second and fourth nodes 1 and 4 on the ring are connected to fifth and sixth nodes 5, 5 respectively. 6 are connected. In such a network, each node is given a node ID of a serial number, and an IP address is assigned to each node. The assigned IP address includes a node address assigned to each node and a subnetwork address for each direction between the nodes.

FIG. 3 is a diagram showing an address generation rule. In the present embodiment, the IP address and the subnetwork address are automatically determined according to the address generation rule shown in FIG.

Each node on the network is assigned a number called a node ID in advance. In FIG. 2, the first to sixth nodes respectively include:
"1", "2", "3",. . . The node ID “6” is assigned. Here, in each node on the ring, the clockwise line is referred to as line 1 and the counterclockwise line is referred to as line 2. The sub-network address comprises a first sub-network address on line 1 and a second sub-network address on line 2.

In this example, the IP address is represented by four digits as shown in FIG. 3, the upper first and second digits are indicated by A and B, and the lower third and fourth digits are indicated by C and D. Is shown.

The first and second digits of the IP address (A in FIG. 3)
And B) are upper addresses determined by the network, which are arbitrarily determined by the user. In the present embodiment, as shown in FIG. 2, an upper address is assigned to the network in the form of “130.1.XX”.

Next, in the third and fourth digits (C and D in FIG. 3) of the IP address, in the case of a node address, C is a node ID and D is an arbitrary value, for example, "1". Determines the node address. In the case of a sub-network address between nodes, C is the node ID + n (n is the number of all nodes on the network) on the line 1 side, and C is the counterclockwise adjacent node on the line 1 side on the line 2 side. And the same as As D, the line 1 side is, for example, “1”, and the line 2 side is “2”. In the case of a subnetwork address (LS in FIG. 3) with another node connected to a node on the ring, the nodes on the ring have C as a serial number starting from 2 × n + 1 and set D to, for example, “1”.
And In the case of another node connected to a node on the ring, D is set to “2”.

In FIG. 2, focusing on the first node 1, since the node ID of the first node 1 is "1",
The node address of the first node 1 is “130.1.1.
As for the subnetwork address of the first node 1, the value of C on the line 1 side is "7" because the node ID is "1" and the number n of nodes on the network is "6". And the first sub-network address on the line 1 side is “130.1.7.1”.
For example, in the case of the first sub-network address on the line 1 side of the fourth node 4, since C is 6 + 4, "13"
0.1.10.1 ".

The second sub-network address on the line 2 side of the first node 1 is “130.1.10.1” when the first sub-network address on the line 1 side of the counterclockwise adjacent node 4 is “130.1.10.1”. ”, It becomes“ 130.1.8.2 ”.

Next, focusing on the node 2, the node 2 is connected to the node 5, and the sub-network address between the nodes 2 and 5 is the sub-network address C of the node 2 by the number of nodes 6 × 2 + 1. "13
On the node 5 side, the address D on the node 2 side is set to “2” and “130.13.
Similarly, the subnetwork address of the fourth node 4 is C, which is a serial number 14, and “130.1.1”.
In the subnetwork address of the node 6 connected to the node 4, D becomes 2 and “130.1.1” is obtained.
4.2 ".

FIGS. 4 and 5 show the generation of the IP address of each node when a new node is newly introduced while the IP address shown in FIG. 2 is stored in the address storage unit 31 of the storage device. FIG. 6 is a diagram illustrating the contents of rewriting to an address storage unit.

FIG. 4 shows an example of changing the IP address when a node 7 outside the ring is newly introduced into the existing node 3 on the ring. The IP addresses of the nodes including the new node 7 are allocated without changing the order of the sequential numbers of the subnetwork addresses of the existing nodes 2-5 and 4-6. The node address of the new node 7 is 130.
1.7.1, and the C of the subnetwork address between the nodes 3-7 is 17 (7 × 2 + 3).

If the order of the serial numbers is not changed in this way, the subnetwork addresses of nodes 1, 2, 3, and 4 on the ring can be obtained by simply increasing C by +1 to the original value both clockwise and counterclockwise. Well, between nodes 2-5, node 4
The subnetwork address between −6 is obtained by adding C to the original value +
You only need to do 2.

FIG. 5 shows that a new node 7 is introduced on the ring from the configuration shown in FIG.
4 shows an example of address generation in the case where is connected. Assuming that the node IDs of the nodes 7 and 8 are 7 and 8, respectively, the node addresses C are 7 and 8, respectively, and the subnetwork addresses C between the nodes 2-5, 4-6 and 7-8 are C It becomes a serial number from 17. In this example, the order of the serial numbers is clockwise on the ring. Node 7-8
The C of the subnetwork address in between becomes 18, and there is no change in the C of the node address of the existing node.

In the above embodiment, in the IP address generation rule, in the case of a subnetwork address (LS) between another node connected to a node on the ring,
Although C of the subnetwork address is twice the number n of nodes, it is obvious that this may be a natural number m times 2 or more. Further, the present invention can be applied to a system in which another node is further connected to a node other than the node on the ring connected to the node on the ring as a network configuration. Further, the generation of the IP address of the node can be performed not only when the node is added but also when the node is deleted.

[0033]

According to the present invention, an IP address can be easily and automatically determined without error based on a node ID assigned to each node including a node on the ring and a node connected to the node. be able to. Therefore, it is possible to mechanically assign the IP address without the user having to determine the IP address one by one.

[Brief description of the drawings]

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

FIG. 2 is a diagram illustrating an example of a network configuration and a generated IP address according to the embodiment;

FIG. 3 is a diagram showing an address generation rule.

FIG. 4 is a diagram illustrating an example of an IP address generated by newly introducing a node;

FIG. 5: IP generated by new introduction of a different node
FIG. 4 is a diagram illustrating an example of an address.

[Explanation of symbols]

 1, 2, 3, 4, 5, 6, 7, 8 node 10 input device 20 data processing device 21 address generation unit 30 storage device 31 address storage unit 40 output device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04L 12/56 H04L 12/28 H04L 12/40

Claims (5)

(57) [Claims] 1. A plurality of nodes connected in a ring,
A node address for each node and a sub-network address between nodes are generated as an IP address having a plurality of digits of each node in a network in which a node outside the ring is connected to at least one of the nodes on the ring. In the automatic IP address generation method, the node address is generated by assigning a node ID to a predetermined digit based on a node ID assigned to each node in advance, so that a node between nodes connected in a ring shape Is generated by allocating an addition value of a node ID and the number of nodes on a network to the digit, and a subnetwork address between a node on the ring and a node on and outside the ring is Digit is the node ID and m times the number of nodes on the network (M: natural number of 2 or more)
An automatic IP address generation system, wherein the IP address is generated by assigning a serial number from a value added to the number +1. 2. The IP address is made up of a four-digit value, the upper first and second digits are assigned a value determined by the network, the lower third digit is assigned a value based on the node ID, and the fourth digit is assigned. 2. The IP address automatic generation system according to claim 1, wherein a fixed value is assigned to a digit in the node address, and a value indicating a direction between nodes is assigned to the subnetwork address. 3. The value of the fourth digit in the sub-network address is assigned differently depending on whether the node on the ring is clockwise or counterclockwise.
3. The automatic IP address generation system according to claim 2, wherein different values are assigned to the subnetwork addresses between the nodes on and outside the ring depending on whether or not the direction is toward the node on the ring. 4. The order of serial numbers from the added value of the subnetwork addresses between the nodes on the ring and the nodes on and outside the ring is clockwise or counterclockwise of the nodes on the ring. The IP address automatic generation system according to claim 1, 2 or 3, wherein: 5. The sequence of serial numbers from the added value of the subnetwork address between a node on a ring and nodes on and outside the ring is the order of introduction of the nodes. An automatic IP address generation system as described above.