JPH05189338A - Data repeater system for computer network - Google Patents

Abstract

PURPOSE:To improve the transmission efficiency of a line by holding a storage area in a repeating station in the origin of transmission, and transmitting data by the address of the destination of transmission or the number of the storage area. CONSTITUTION:A computer 2 which receives data 11 searches a corresponding table 8 by a destination of transmission logical address when the designation of transmission is the designation of a logical address, and returns the number of the No.1 of the found position to a computer 1 as data 13, and transmits the data 13 to a computer 3. The computer 1 searches a corresponding table 7 by the destination of transmission logical address, and when the pertinent designation of transmission logical address is found in the corresponding table, a table No. is set at the No.2 of the found position. Then, at the time of the generation of the request of the transmission of the data from the computer 1 through the computer 2 to the computer 3, the corresponding table 7 is searched by the destination of transmission logical address, and the data are transmitted by using the case of the No.2 of the found position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data relay system for computer networks, and more particularly, as an address.
The present invention relates to a relay system in which data is transmitted via a computer by using two types of a physical address of a relay station and a logical address of a final destination.

[0002]

2. Description of the Related Art In a conventional computer network data relay system, when data is transmitted from a computer 1 to a computer 3 via a computer 2 as shown in FIG. Corresponding to the logical addresses 4, 5 and 6, each computer 1 to 2 has a correspondence table of the destination logical address and the destination physical address, and using this table, the data 51 and 52 are sent out on the line. Was.

Here, as shown in FIG. 6, data 51,
52, each time data is sent, the destination physical address of the relay station, the source physical address, the destination logical address of the final destination, and the source logical address are attached and transmitted. The process of indexing the destination physical address of the final destination from the address and sending the data to the indexed final destination is performed every time the data is sent.

[0004]

In this conventional computer network data relay method, a destination physical address, a source physical address, a destination logical address, and a source logical address are added every time data is transmitted, Since it was sent over the line, there was a problem that the transmission efficiency of the line was poor.

It is an object of the present invention to provide a data relay system for a computer network which improves the transmission efficiency of the line.

[0006]

To achieve the above object, in a computer network data relay system according to the present invention, a data relay station of a computer network holds an area for storing a destination address, and When a message is relayed to, the address storage area is used to store the destination address and the number corresponding to the stored area is returned to the sender. The process of deciding the destination from the added address storage area number and sending a message to that destination, and the sender holding the storage area of the destination storage area number in the relay station and sending the first message As opposed to
When the destination storage area number is returned from the relay station, that number is stored in the number storage area, and when sending the second and subsequent messages, the message is stored using this stored number instead of the destination address. It performs the process of sending.

[0007]

In the relay station, the area for storing the address of the transmission destination is held, the processing of returning the stored area number to the transmission source, the processing of transmitting a message from the storage area number to the transmission destination, and the transmission source In step 2, the area for storing the number of the storage area in the relay station is held, and the processing is performed to transmit at the destination address or the number of this storage area.

[0008]

The present invention will be described below with reference to the drawings. 1 and 2 are schematic diagrams showing a data relaying method in a computer network according to an embodiment of the present invention. FIG. 1 is a diagram showing the first data transmission, and FIG. 2 is a diagram showing the second and subsequent data transmission. ..

The present embodiment shown in the figure is an example in which data is transmitted from the computer 1 to the computer 3 via the computer 2, and the addresses of the computers 1, 2, 3 are addresses 4, 5, 6 respectively. Indicate.

The data 11, 12, and 13 shown in FIG. 1 are transferred from computer 1 to computer 2, computer 2 to computer 3, and computer 2 to computer 1.
2 and the data 21 and 22 in FIG.
From the computer 2 to the computer 2 and from the computer 2 to the computer 3.

FIG. 3 is a transmission process on the computer 1, FIG.
Is a relay process on the computer 2, and FIG.
It is a processing flow of the above reception processing.

The operation of one embodiment of the present invention will be described below with reference to FIGS. 1 to 5 using a specific example.

When there is a request from the computer 1 to transmit data to the computer 3 via the computer 2, the transmission process (FIG. 3) on the computer 1 first operates to search the correspondence table 7 with the destination logical address. (Process 31).

When there is a corresponding destination logical address in the correspondence table 7 (comparison 32), the No. of that item is further added.
Check whether or not the column is 0 (comparison 33).

In the case of the first transmission, this is 0, and the destination logical address is used to transmit the data 11 (process 34).

Computer 2 receiving this data 11
Then, the relay process (FIG. 4) operates and it is checked whether the destination is a logical address (comparison 41). In this case, since the logical address is designated, the correspondence table 8 is searched by the destination logical address (process 42), and if found (comparison 44), the No. of the position found is found. Is returned to the computer 1 as the data 13 (process 45).

Further, using the destination logical address,
The data 12 is transmitted to the computer 3 (process 47).

In the computer 1 which has received the data 13, the receiving process (FIG. 5) operates and the correspondence table 7 is searched by the destination logical address (process 51).

When the corresponding destination logical address is found in the correspondence table (comparison 52), N of the found position is found.
o. Table No. Set.

Next, when a request for transmitting data from the computer 1 to the computer 3 via the computer 2 is made, the transmission process (FIG. 3) on the computer 1 operates and the correspondence table 7 is set in the destination logical address. After searching (process 31), the No. of the found (comparison 32) is found. No. is not 0 this time (Comparison 33). The case 21 is used to transmit the data 21.

Computer 2 receiving this data 21
Then, the relay process (FIG. 4) operates and the destination is not a logical address (comparison 41). The correspondence table 8 is searched by (process 43) and found (comparison 46).
In that case, the data 22 is transmitted to the computer 3 using the destination logical address (process 47).

[0022]

As described above, according to the present invention, the relay station holds the area for storing the destination address,
When the message is relayed for the first time, the address of the destination is stored in this address storage area, and the process of returning the number corresponding to the stored area to the sender is added to the message when relaying the second and subsequent messages. Determine the destination from the number in the address storage area,
Performs the process of transmitting a message to the destination, and at the source, holds the storage area of the destination storage area number in the relay station, and for the first message transmission,
When the destination storage area number is returned from the relay station, that number is stored in the number storage area, and when sending the second and subsequent messages, the message is stored using this stored number instead of the destination address. Since data is sent, it is not necessary to add a destination logical address and a source logical address each time data is transmitted from the data transmission source to the relay station.
This has an effect that the line can be effectively used and the transmission speed is increased, and further, there is an effect that the process of the final destination does not need to be changed at all.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention and is a diagram showing a first data transmission.

FIG. 2 is a diagram showing a second and subsequent data transmissions.

FIG. 3 is a flowchart showing a transmission process on the computer 1 of FIG.

FIG. 4 is a flowchart showing a relay process on the computer 2 of FIG.

5 is a flow chart showing a reception process on the computer 1 of FIG. 1. FIG.

FIG. 6 is a schematic view showing a conventional example.

[Explanation of symbols]

 1,2,3 computer 4,5,6 address 7,8 address correspondence table 11,12,13,21,22 data

Claims (1)

[Claims] 1. A data relay station of a computer network holds an area for storing an address of a transmission destination, and stores the address of the transmission destination in this address storage area when the message is relayed for the first time. The process of returning the number corresponding to the specified area to the sender, and the process of determining the destination from the number of the address storage area added to the message and transmitting the message to the destination when relaying the second and subsequent messages The sender holds the storage area of the destination storage area number in the relay station, and when the destination storage area number is returned from the relay station for the first message transmission, that number is stored in the storage area of the number. When sending the second and subsequent messages, the stored number is used instead of the destination address. Data relay method of a computer network, characterized by performing a process of sending a di.