JPS63236436A - Name service system - Google Patents

Abstract

PURPOSE:To simplify the addition, deletion, and change of network address information and to evade confusion, by managing the network address information comprehensively by a name service device without performing the distributed management of them by each information processor. CONSTITUTION:The information processor 2a transmits data on which the physical address of its own device, the network address of the name service device 1, and the name of the information processor 2b are added as global data in a data format 4a to a transmission line 3 to obtain the physical address from the processor 2b. The device 1 replaces the network part of the device 1 with the data format 4a by the network address of the device 2b, and transmits it to the transmission line 3 in a data format 4b. The device 2b receiving the data transmits the physical address of the device 2a to the transmission line 3 setting the physical address of an opponent and that of the device 2b as the physical address of its own device in a data format 4c. Only the device 2a can receive the data, and in such a way, data transmission between the devices 2a and 2b is performed hereafter.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a name service device between contention-based packet communication systems in which all transmission path resources are shared among a plurality of information processing devices.

[Summary of the invention]

The present invention provides network address information (abbreviation given to information processing devices, hereinafter referred to as name) between contention-based packet communication systems in which transmission path resources are shared among a plurality of information processing devices.

and the corresponding logical address on the network.

Hereinafter, this will be referred to as a network address. ) is centrally managed in the name service device instead of distributed maintenance and management in each information processing device, the purpose is to easily add, delete, or change network address information and avoid confusion in the entire network. be.

[Conventional technology]

In the past, the network address information required for network connection was distributed among each information processing device, so it was difficult to add a new information processing device to the network, remove an existing information processing device from the network due to relocation, and reduce the network scale. Addition, deletion, and modification of network address information due to changes in address form due to expansion were performed asynchronously between information processing devices.

[Problem that the invention seeks to solve]

In the above conventional technology, even if the network address information in one information processing device is changed, the remaining information processing devices do not recognize it at all, so devices that were previously connected may no longer be able to connect due to the change in network address information. , it was not possible to connect to information processing devices that were newly added to the network, causing confusion in the network system.

[Means for solving problems]

In order to solve the above-mentioned problems, in the present invention, network address information, which was previously held in a distributed manner within each information processing device, is collectively managed by a name service device, and each information processing device can ask questions about it. I decided to make adjustments.

[Effect]

According to the above configuration, the network address information of the network system is managed centrally, so changes to it,
Deletion and addition are performed uniquely, and each information processing device makes an inquiry only regarding this, so an efficient network system can be constructed.

〔Example〕

Embodiments of the present invention will be described below with reference to FIG. Furthermore, the internal blocks of the name service device are shown in FIG. 2, and the data formats flowing through the transmission path are shown in FIGS. 3 to 5.

For convenience of explanation, a case in which data is transferred from information processing device f2a to information processing device f2b will be described in detail. Information processing device 2
A needs to know the physical address of the information processing device 2b. However, what is currently recognized is only the name of the information processing device 2b. Therefore, the information processing device 2b
In order to obtain the physical address from the name of the information processing device 2a
transmits global data to the transmission path 3 in the data format 4a shown in FIG. 3, to which its own physical address, the network address of the name service device 1, and the name of the information processing device 2b are assigned. All \@ locations connected to the transmission line 3 receive this data, but only the name service device 1 that matches the network address mentioned above can actually process it.

Name service device 1 that received the above data from 1N1
The name→network address search means 1b searches for the network address from the name/network address registration table 1a, and the transmission $ control means 1C retrieves the above data 4.
Replace the network address part of the name service device 1 of a with the network address of the information processing device 2b,
It is transmitted again to 3 from 0UTI in the data format 4b shown in FIG. As a result, the information processing device 2b
Receive data via N3.

The information processing device 2b uses the physical address of the information processing group @2a as the other party's physical address and the physical address of the information processing device 2b as its own physical address, and transmits it to the transmission path 3 from 0UT3 in the data format 4C shown in FIG. do.

The only device that can receive this data is the information processing device 2a, and since the information processing device 5t2a was able to recognize the physical address of the information processing device 2b by receiving the above data, future data transmission will be performed using this mutual physical address. This is performed between the information processing device t2a and the information processing device 2b using the information processing device t2a and the information processing device 2b. Similarly, love! 11! LA equipment 2
a, Information processing group other than information processing device 2b! Data transmission is also possible to 2C.

Change of name/network address registration table 1a,
Additions and deletions are performed by the name/network address registration control means 1d via the IN410UT4.

〔Effect of the invention〕

When communicating between such information processing devices, if each information processing device maintains its own network address as in the past, the addition of a network address due to the addition of a new information processing device, However, by storing the network address and the name of the information processing device all at once in the name service device, and using the name instead, it will greatly reduce the maintenance and management of the network system. Fulfill your role.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the network system of the present invention, FIG. 2 is a block diagram inside the name service device, FIG. 3 is a diagram showing the data format 4a, FIG. 4 is a diagram showing the data format 4b, and FIG. 5 is a diagram showing the data format 4b. Data format 4C
FIG. 2a, 2b, 2c... Information processing device 3... Transmission line 1... Name service device 1a... Name/network address registration table 1b... Name → network address search means 1C.
...Transmission control means 1d...Name/network address registration table control means Applicant Seiko Electronic Industries Co., Ltd. Agent Patent attorney Tsutomu Mogami (1 other person)

Claims (1)

[Claims] A plurality of information processing devices that transmit and receive data, a transmission path that transmits data of the information processing devices, and a name service device that is connected to the transmission path and maintains a table in which network addresses and names of the information processing devices are registered. The name service device includes a control means for registering, deleting, and changing the network addresses and names of the plurality of information processing devices, a means for searching the network address from the name in the registration table, and a physical A name service system comprising: a transmission control means for obtaining an address.