JPH11308228A - Atm network communication system, its address information storage method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the storage capacity to store address information. SOLUTION: Each of modules 11-14 that executes a protocol for the communication of the IP over ATM system uses an address information storage section 22 as a means of storing address information consisting of an IP address and an ATM address. A data conversion section 21 converts the address information in a form in matching with a protocol of each of the modules 11-14 to allow the modules 11-14 to share and manage the address information in common. Thus, a storage capacity to store the address information is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ATM (Asyn)
IP (Int), which is a communication means using a "chronous transfer mode" (asynchronous transfer mode).
The present invention relates to an ATM network communication system using an over ATM method.

[0002]

2. Description of the Related Art One of the methods for interconnecting an existing LAN with an ATM network is IP over A.
There is a TM system. In this method, data communication using an IP protocol is performed on an ATM network, and for that purpose, it is necessary to convert an IP address into an ATM address. To this end, modules such as a client module hold address information in which an IP address and an ATM address are paired in an address information storage unit.

[0003] When unicast or multicast communication is performed using this method, ATMARP (ATM Addr) is used in addition to the client module.
essResolution Protocol server module, MARS (Multicast Add)
less Resolution Server) module, MCS (MultiCast Server)
Multiple modules such as modules are required.

[0004] Each module that performs a protocol process for performing communication in the IP over ATM system stores address information individually on the same device.

[0005] Clients having an IP address and an ATM address respectively transmit and receive data via an ATM network communication system. However, this client is not always present. Therefore, when a client no longer needs to transmit and receive data, it becomes necessary to delete the client's IP address and ATM address from the stored address information. Also, if there is a new client who wants to send and receive data, it becomes necessary to add the IP address and ATM address of the client to the address information. Then, other clients can know the address of the newly added client by referring to the added address information,
It becomes possible to transmit and receive data to and from the client.

For this reason, each module performs deletion, addition, and reference processing on address information that is individually managed.

FIG. 3 shows such a conventional ATM network communication system.

The conventional ATM network communication system includes a protocol processing unit 1 and an address information storage unit 31.
To 34.

The protocol processing unit 1 has an IP over ATM client module 11, an ATMARP server module 12, a MARS module 13, and an MCS module 14 for performing processing of each protocol. Address information storage units 31 to
Reference numeral 34 denotes each module 1 of the protocol processing unit 1.
It is provided corresponding to each of 1 to 14 and records the address information managed by the corresponding module.

[0010] The client module 11 actually
It has a function for transmitting and receiving P data,
When there is a request to send IP data from the protocol,
The ATM address corresponding to the destination IP address of the IP data is resolved using the ATMARP server module 12 and the MARS module 13, and the data is transmitted on the ATM network using the resolved ATM address.

The ATMARP server module 12 manages a set of each client's IP address and ATM address in the unicast address in the address information storage unit 32. The address information managed by the ATMARP server module 12 includes an IP address and an ATM address.
The addresses correspond one-to-one.

The MARS module 13 manages a set of the IP address and the ATM address of each client and the MCS module 14 in the multicast address in the address information storage unit. MARS module 1
3 manages the IP address and A
The TM addresses correspond one to N (where N is a plurality).

When the client module 11 transmits data to a multicast address, the MCS module 14 acts as a proxy and sends the data to two or more clients as transmission destinations.

These modules 11 to 14 manage address information which comprises an IP address and an ATM address, respectively. However, each module 11-1
No. 4 does not have the same information because information specific to each module is further added to the address information.

For this reason, each of the modules 11 to 14 must individually manage the address information. When a process of deleting, adding, or referring to the address information occurs, each of the modules 11 to 14 individually processes the address information. Are doing.

However, since the address information managed by each of the modules 11 to 14 has a similar format and has a lot of overlapping data, storing the same information a plurality of times uses a wasteful storage capacity. Was. In order to secure a large amount of storage capacity, it is necessary to increase the number of storage devices, and using useless storage capacity is one of the factors that increase the cost of the device.

[0017]

SUMMARY OF THE INVENTION The conventional ATM described above.
The network communication system has a problem that useless storage capacity is used to store address information.

An object of the present invention is to provide an ATM network communication system capable of reducing a storage capacity for storing address information.

[0019]

In order to achieve the above object, an ATM network communication system according to the present invention comprises
a protocol processing unit having a plurality of modules for managing address information having an IP address and an ATM address as constituent elements for performing communication of an over ATM method, and the ATM address having a search key for the IP address And an address information storage unit holding information specific to the protocol of each module, and data for converting the address information stored in the address information storage unit into a data format suitable for the protocol of each module. And a data processing unit including a conversion unit.

According to the present invention, the data conversion section converts the address information into a format suitable for the protocol of each module, so that each module can share and manage the address information. Therefore,
Since the address information is stored, the storage capacity can be reduced.

[0021]

Next, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an ATM network communication system according to an embodiment of the present invention.
In the ATM network communication system of the present embodiment, the same numbers as those in FIG. 3 indicate the same components. The protocol processing unit 1 for performing the protocol processing and the addresses managed by the modules 11 to 14 of the protocol processing unit 1 A data processing unit 2 for storing information.

The data processing unit 2 has an address information storage unit 22 that uses an IP address as a search key and holds an ATM address and other information unique to each protocol, and an address stored in the address information storage unit 22. It has a data conversion unit 21 for converting information into a data format suitable for the protocol of each module 11 to 14.

Client module 11, ATMAR
P server module 12, MARS module 13, M
The CS module 14 manages address information based on the information of the IP address and the ATM address, and further adds information unique to each module. Each piece of address information managed by each of the modules 11 to 14 has a case where the IP address and the ATM address correspond one-to-one or a case where the address is one-to-N (where N is plural). is there. However, the search key is an IP address in every module, and the IP address and the ATM
The correspondence of the addresses has the same information in each of the modules 11 to 14. Therefore, it is possible to share the address information among the modules by sharing the address information among the modules 11 to 14 and converting only a different data portion for each module later corresponding to each module. it can.

Next, the operation of this embodiment will be described with reference to FIG.

First, when processing (deletion, addition, reference) for address information is required in any of the modules 11 to 14 (step 101), the module is added to the data conversion unit 21 to perform addition, deletion, and reference. A command is sent (step 102). Each module 11 to 14,
When this command is sent to the data processing unit 2, in addition to the protocol type and the IP address serving as a search key, an ATM address to be added when additional processing is performed, other protocol-specific information, and processing for deletion AT to delete
The M address and other information specific to the protocol are transmitted.

The data converter 21 having received the command from each of the modules 11 to 14 first determines the protocol type of the module which has transmitted the command (step 10).
3). Then, data in the address information storage unit 22 is searched using the IP address as a search key. After that, the data conversion unit 21 determines the type of table operation (deletion, addition, reference)
Is determined (step 104), and the address information storage unit 22
, A process corresponding to the determination result among the addition, deletion, and reference processes is performed (steps 105 to 108). When these processes are completed, the data conversion unit 21
Returns a response in a format according to the protocol that sent the command (step 109).

Each module 11 to 14 receiving the response
Performs the subsequent processing using the data (step 110).

Each of the modules 11 to 14 existing in the protocol processing unit 1 of FIG. 1 is generally mounted on the same device in many cases. In that case, address information having an IP address and an ATM address as components is stored in a similar format in each module, and there are duplicate entries between modules. In the present embodiment, by managing this address information by sharing it among the modules, it is possible to reduce the storage capacity as compared with the case where each module individually manages the address information.

Although not shown in FIG.
The TM network communication system includes a recording medium on which a program is recorded. This recording medium may be a magnetic disk, a semiconductor memory or another recording medium.

This program is read from the recording medium into the ATM network communication system and controls the operation of the ATM network communication system. Then, the ATM network communication system executes the processing described above under the control of the program.

[0032]

As described above, the present invention has an effect that the storage capacity for storing address information can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a flowchart illustrating an operation of the ATM network communication system of FIG. 1;

FIG. 3 is a block diagram showing a configuration of a conventional ATM network communication system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protocol processing part 2 Data processing part 11 Client module 12 ATMARP server module 13 MARS module 14 MCS module 21 Data conversion part 31-34 Address information storage part 101-110 Step

Claims (6)

[Claims] 1. A protocol processing unit having a plurality of modules for managing address information having an IP address and an ATM address as constituent elements for performing IP over ATM communication, and searching for the IP address An address information storage unit which holds the ATM address and information specific to the protocol of each module with a key; and converts the address information stored in the address information storage unit into a data format suitable for the protocol of each module. An ATM network communication system comprising: a data processing unit configured to convert the data into a data. 2. The ATM network communication system according to claim 1, wherein said plurality of modules are a client module, an ATMARP server module, a MARS module, and an MCS module. 3. Address information having an IP address and an ATM address as constituent elements is stored in an IP over AT
An address information storage method of an ATM network communication system for storing in correspondence with a plurality of modules each having a different protocol in order to perform M-mode communication, the method comprising: Is notified, the type of the protocol of the module that transmitted the command and the type of processing indicated by the command are determined, and the IP address is used as a search key to search for address information shared among the modules. An address information storage method for an ATM network communication system, which performs a process corresponding to the command on the retrieved address information and converts the address information into a data format suitable for a protocol of each module. 4. The method according to claim 3, wherein the plurality of modules are a client module, an ATMARP server module, a MARS module, and an MCS module. 5. The address information storage method for an ATM network communication system according to claim 3, wherein the type of processing for address information transmitted from each of said modules is deletion, addition, and reference of address information. 6. Address information having an IP address and an ATM address as constituent elements is stored in an IP over AT
A recording medium on which a program for causing a computer to execute an address information storage method of an ATM network communication system for storing in correspondence with a plurality of modules each having a different protocol for performing M-system communication is recorded. When a command for processing the address information is notified from each of the modules, a process of determining the type of the protocol of the module that transmitted the command and the type of the process indicated by the command, and using the IP address as a search key A process of searching for address information shared by each module, a process of performing a process corresponding to the command on the searched address information, and a process of converting the address information to a data format suitable for a protocol of each module. A method for storing address information of an ATM network communication system to be performed. A recording medium recording a program to be executed by the Yuta.