JPH0226159A - Terminal address control system - Google Patents

Abstract

PURPOSE:To reduce the storage capacity of a host by adding host identifying information to a telegraphic message with a terminal, converting the host identifying information to terminal identifying information with a repeating device, returning these terminal identifying information with being added to the telegraphic message with the host and converting these information to host information with the repeating device. CONSTITUTION:A terminal address control table 23 and a host address control table 24 are provided in a network repeating device 20. The host identifying information of a communication destination are added to the questioning telegraphic message by the respective terminals and transmitted to the repeating device 20. Then, the host identifying information are converted to the terminal identifying information of communication source by the repeating device 20 based on the terminal address control table 23 and transmitted to the designated host. These terminal identifying information are added to a responding telegraphic message as the terminal identifying information of the communication destination by the respective hosts and transmitted to the repeating device 20. The terminal identifying information of the communication destination to be added are changed to the host identifying information by the repeating device 20 based on the host address control table 24 and transmitted to the designated terminal. Thus, the capacity of a host main storage can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is applied to a terminal address management system of a distributed processing device. In particular, it relates to a terminal address management system that eliminates the need for terminal address management in a host computer.

〔overview〕

In the terminal address management system of the present invention, each terminal adds host identification information of the communication destination to an inquiry message and sends it, and the network relay device adds this communication destination host identification information to the communication source based on a terminal address management table. The terminal identification information is changed to the terminal identification information and an inquiry message is sent to the specified host, and the host adds this communication/original terminal identification information to the response message as the destination terminal identification information and sends it back, and the network relay device By changing the terminal identification information of the communication destination to the communication source host based on the address management table and sending the response message to the specified terminal, the capacity of the host's main storage device can be reduced, and the number of terminals can be increased or decreased. This eliminates the need for the host to create a system when changing the terminal network address, and also eliminates the need to select a host to establish a session.

[Conventional technology]

FIG. 4 is a block diagram of a conventional terminal address management device. FIG. 5 is a diagram showing the operation of a conventional terminal address management device. Table 3 is a table showing the host terminal address management table of the conventional terminal address management device. Table 4 is a table showing the terminal address management table of the network relay device of the conventional terminal address management device.

Conventionally, in the terminal address management method, as shown in FIG. 4, a host 10. Or host 10□ and terminal 30. .about.30, communicate with host 10. ．． 10□ and the network relay device 20, a correspondence table between the terminal names recognized by the application processing means 11 and the message processing means 21, and the network addresses used by the communication processing means 12.22 to communicate according to the transmission control procedure. was necessary.

Table 3 Host 10. When transmitting and receiving messages to and from the terminal 30, the applied business processing means 11. When sending a message, the general method is to specify the terminal name of the communication destination and execute the message transmission, and when receiving a message, the name of the communication source terminal and the received message are recognized.

4 and 5, host 1010 communication processing means 12. Now, for all the terminals that send messages, the applied business processing means 11. Terminal name specified by TOI~
T050 and communication processing means 12. Terminal address management table 13 as shown in Table 3, which associates terminal network addresses for physically communicating with each other. , refer to this terminal address management table 13t, and select the terminal name T.
A means of converting OI to TO50 into a terminal network address was required.

In the network relay device 20, the terminal name TOI defined in order to uniquely recognize the terminal 30 by the message processing means 21
~T050, the terminal network address determined between the host IO corresponding to this terminal 30 and the network relay device 20, and the network relay device 20 and the terminal 30
The terminal network address (host 10
It had a terminal address management table 25 shown in Table 4, which shows the terminal network address (different from the terminal network address determined between the network relay device 20 and the network relay device 20). When relaying a message between the host 10 and the terminal 30, the communication processing means 22 refers to the terminal address management table 25 to determine the terminal name from the terminal network address that can be recognized at the time of receiving the message, and sends the message along with the message to the message processing means 21. Notice.

(Hereinafter, the margin of this page) In order to send a message to the opposing host or terminal, the message processing means 21 notifies the communication processing means 22 of the terminal name TOI to T050 and the message, performs the sending process, and upon receipt of this, transmits the message. The processing means 22 uses the terminal address management table 25.
, determines the terminal network address between the terminal names TOI to T050 and the opposing host or terminal, and transmits the message.

As described above, the distributed processing device requires a terminal address management table whose size is proportional to the number of terminals 30 that communicate with the host 10 or the network relay device 20. This table must be changed whenever the number of terminals connected to this device increases or decreases or the network address changes.

In addition, in such a distributed processing device, when a terminal operator selects a host necessary for performing business from among multiple hosts, he or she must perform a session establishment operation to select the host before sending the business message. There was a need.

[Problem that the invention attempts to solve]

However, with this conventional terminal address management method,
Since an address management table of a size proportional to the number of connected terminals is required, the capacity of the main storage device becomes large.

Furthermore, each time a terminal is added or removed or address information is changed, there is a drawback that it is necessary to ensure the consistency of the addresses of the host, network relay device, and terminal, and to create a system for each device.

Furthermore, the host has a limitation in the number of terminals that can be connected due to the memory capacity and the number of connectable line control units, and even if the host has sufficient processing capacity, it has the disadvantage that it cannot make full use of its processing capacity.

Also, when selecting the required host from multiple hosts,
There was a drawback that it was necessary to perform a session establishment operation to select a host before sending a business message.

The present invention solves the above-mentioned drawbacks.The present invention can reduce the capacity of the host's main storage device, eliminates the need for the host to create a system when the number of terminals increases or decreases, or changes the terminal network address, and allows the host to be selected by a session. The purpose of this invention is to provide a terminal address management method that can eliminate establishment operations.

Means for Solving Two Problems] The present invention provides a method for connecting a plurality of hosts, a plurality of terminals, and the plurality of terminals and the plurality of hosts through a terminal network and a host network, respectively. each terminal includes a business processing means for transmitting an inquiry message to one of the plurality of hosts, receiving the response message, and performing business processing;
Each of the above-mentioned hosts includes a response processing means that performs processing according to the content of the inquiry message of one of the plurality of terminals and returns a response message, and the network relay device is configured to respond to the inquiry message of each of the terminals. According to the terminal address management method that includes a relay processing means for relaying response messages from each host, the network relay device generates a terminal address in which each terminal network identification information is associated with each terminal identification information. The business processing means includes a management table and a host address management table that associates each host network identification information with each host identification information, and the business processing means includes means for adding communication destination host identification information to the inquiry message. , the relay processing means changes the added communication destination host identification information to the communication source terminal identification information based on the terminal address management table, and sends the inquiry message to the host specified by this host identification information. The response processing means includes means for adding the terminal identification information of the communication source to the response message as the terminal identification information of the communication destination,
The relay processing means changes the added communication destination terminal identification information to communication source host identification information based on the host address management table, and returns the response message to the terminal specified by this terminal identification information. It is characterized by including means.

[Effect]

A terminal address management table that associates each terminal identification information with each terminal network identification information and a host address management table that associates each host identification information with each host network identification information are provided in the network relay device. The business processing means of each terminal adds communication destination host identification information to the inquiry message and sends it to the network relay device.

The relay processing means of the network relay device changes the communication destination host identification information added to this inquiry message to the communication source terminal identification information based on the terminal address management table,
Send to the host specified by this host identification information. The response processing means of each host adds the terminal identification information of the communication source to the response message as terminal identification information of the communication destination, and transmits the response message to the network relay device. The relay processing means of the network relay device changes the communication destination terminal identification information added to this response message to the communication source host identification information based on the host address management table, and sends it to the terminal specified by this terminal identification information. . The above operation reduces the capacity of the host's main storage, eliminates the need for the host to create a system when the number of terminals increases or decreases, or changes the terminal network address, and eliminates the need to establish a session to select a host. can.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of a terminal address management device according to an embodiment of the present invention. In FIG. 1, the terminal address management device includes a plurality of hosts 10. ．． 10a and multiple terminals 3
0. ~305o, and a plurality of terminals 30°~30. ．． and a plurality of hosts 101 and IO2 via a terminal network 50 and a host network 40, respectively;
Adaptive business processing means 31 and communication processing means 32 serve as business processing means for transmitting an inquiry message to one of the hosts 10 and receiving the response message to perform business processing.
Each host 10 includes an adaptive business processing means 11 and a communication processing means 12 as response processing means for processing according to the content of the inquiry message from one of the plurality of terminals 300 and returning a response message. , network relay device 20
The message processing means 2 serves as a relay processing means for relaying inquiry messages from each terminal 30 and response messages from each host 10.
1 and communication processing means 22.

Here, the feature of the present invention is that the network relay device 20 has a terminal address management table 23 that associates each terminal network identification information with each terminal identification information.
and 1. Host address management table 24 that associates each host network identification information with each host identification information
The adaptive business processing means 31 includes means for adding communication destination host identification information to the inquiry message, and the message processing means &21 and the communication processing means 22 add the above-mentioned information based on the terminal address management table 23. The adaptive business processing means 11 includes means for changing the host identification information of the communication destination to terminal identification information of the communication source and transmitting the inquiry message to the host specified by this host identification information, and the adaptive business processing means 11 The message processing means 21 and the communication processing means 22 include means for adding identification information as the terminal identification information of the communication destination to the response message, and the message processing means 21 and the communication processing means 22 add the added terminal identification information of the communication destination based on the host address management table 24. The present invention includes means for changing the response message to the host identification information of the communication source and returning the response message to the terminal specified by the terminal identification information.

The operation of the terminal address management device having such a configuration will be explained. FIG. 2 is a diagram showing the operation of the terminal address management device of the present invention. FIG. 3 is a flowchart showing the operation of the terminal address management device of the present invention. Table 1 is a table showing the terminal address management table of the network relay device of the terminal address management device of the present invention. Table 2 is a table showing the host address management table of the network relay device of the terminal address management device of the present invention.

In Table 1, 301-350 are terminals 301-30.
.

Indicates the terminal number.

In Table 2, 401.402 is host 10IS10
2 host number is shown.

Figure 1 shows an example of the configuration of a financial online system.
0 terminals can perform inquiry-response type business processing with the hosts 101 and 102 at any time.

Terminal 30 using FIG. 1, FIG. 2, Table 1, and Table 2.
．． and host 10. The operation of terminal address management related to inquiry-response-type business processing will be explained.

Table 1 Table 2 Terminal 30. When performing inquiry-response type business processing with the host 101 in this business process, the inquiry business message 110 with a host number 401 uniquely determined for the host added to the inquiry business message body addressed to the host IL is sent to the network relay device. 20
(Sl).

In the message processing means 21 of the network relay device 20,
It has a terminal address management table 23 that associates the terminal number uniquely defined for the terminal with the terminal network address determined by the configuration information, and when the inquiry business message 110 is received from the terminal, the terminal network address and the inquiry The joint business message 110 can be recognized.

Furthermore, the message processing means determines the host 10° to which the message will be communicated from the host number 401 of the inquiry business message 110. Furthermore, the terminal number 301 is determined by referring to the terminal address management table 23 from the terminal network address.

Furthermore, the host number 401 of the inquiry business message 110 is changed to the terminal number 301 of the communication source, and the inquiry business message 120 is changed to the specified host 10. (S2).

Host 10. Then, the application task is executed according to the contents of the received inquiry task message 120, and the result of the application task is returned to the communication source terminal as a response task message 130.

The host 10.0 applied business processing means 111 executes business processing based on the inquiry business message body of the inquiry business message 120, and stores the terminal number 301 of the communication source at the time of receiving the message in the response business message body indicating the result. The inquiry business message 130 added as the terminal number of the communication destination is transmitted to the network relay device 20 (S3).

At this time, the communication processing means 12 of the host t-1 (L) does not need to recognize the terminal as the communication destination, and the network relay device 2 is used as the optical device for transmitting and receiving all messages.
It is enough to be aware of only that.

Therefore, conventionally, hosts 10. required a terminal address management table 131 as shown in Table 3, but
The present invention does not require a host terminal address management table.

The message processing means 21 of the network relay device 20 has a host address management table 24 in which a host number uniquely defined for a host is associated with a host network address determined by configuration information.
When a response business message is received from , the host network address and response business message 130 can be recognized.

Further, the message processing means 21 uses the terminal number 301 of the communication destination of the response business message 130 to determine the destination terminal 30 of the response business message 130. Determine. Further, the communication source host number 401 is determined by referring to the host address management table 24 based on the host network address.

Furthermore, the terminal number 301 of the communication destination in the response business message 230 is changed to the host number 401 of the communication source, and the response business message 14
Terminal 30 with 0 specified. (S4).

Terminal 30. Then, the host number 401 that has been processed can be recognized from the response business message 140, it can be confirmed whether the process was performed by the original requesting host, and the process result can be obtained (S5). With the above steps, the predetermined business processing from the terminal is completed.

So far, we have explained the terminal address management method from when an inquiry business message from a specific terminal is processed by the host until a response is returned to the corresponding terminal.

In reality, between the host and the network relay device, inquiry business messages and response business messages between multiple terminals are processed simultaneously, so the host does not need to refer to the address management table at the host, so the processing speed is and the number of cases processed will be improved.

Note that the present invention is effective for any number of hosts and terminals within the range permitted by the resources of each device.

〔Effect of the invention〕

As explained above, the present invention can reduce the capacity of the host's main storage device, and is an excellent system that does not require any system creation work, as the host is not affected by increases or decreases in the number of terminals or changes in terminal network addresses. effective.

Therefore, even a small-scale host computer with a small main memory capacity and one communication line can communicate with many terminals, and selection of a host from a terminal is based on the host of the inquiry business message. There is an advantage that the session establishment operation of selecting a host to perform by referring to a number is not necessary.

[Brief explanation of the drawing]

FIG. 2 is a block diagram of a terminal address management device according to an embodiment of the present invention. FIG. 2 is a diagram showing the operation of the terminal address management device of the present invention. FIG. 3 is a flowchart showing the operation of the terminal address management device of the present invention. FIG. 4 is a block diagram of a conventional terminal address management device. FIG. 5 is a diagram showing the operation of a conventional terminal address management device. 10,. 10. ...host, 111.113.31
．． ~31s. ...Adaptive business processing means, 12. ．． 22.32. ~32
．． . ...Communication processing means, 131.132.23.25
...Terminal address management table, 20... Network relay device, 21... Message processing means, 24... Host address management table, 301-305°... Terminal, 40... Host network, 50 ...terminal network, 110.12G, 210.220...
Inquiry business telegram, 130.140.230.240...
Response business message. Figure Example Flowchart Figure 3

Claims (1)

[Claims] 1. A plurality of hosts (10) and a plurality of terminals (30)
and a network relay device (20) that connects the plurality of terminals and the plurality of hosts via a terminal network (50) and a host network (40), respectively.
), each of the above-mentioned terminals includes business processing means (31, 32) for transmitting an inquiry message to one of the hosts of the plurality of hosts, receiving the response message, and performing business processing; Each host is
Response processing means (11,
12), and the network relay device includes a terminal address management method including relay processing means (21, 22) that relays inquiry messages from each of the terminals and response messages from each host. are a terminal address management table (23) that associates each terminal network identification information with each terminal identification information, and a host address management table (24) that associates each host network identification information with each host identification information. The business processing means includes means for adding host identification information of the communication destination to the inquiry message, and the relay processing means adds the added host identification information of the communication destination based on the terminal address management table. The response processing means converts the communication source terminal identification information into the communication destination terminal identification information and transmits the inquiry message to the host specified by the host identification information. The relay processing means includes means for adding information to the response message, and the relay processing means changes the added communication destination terminal identification information to communication source host identification information based on the host address management table, and adds the information to the response message. A terminal address management method characterized by including means for returning the information to the terminal specified by the terminal identification information.