JPH01140833A - Internetwork data transfer system - Google Patents

Abstract

PURPOSE:To attain data transfer only by means of designating the identification name of the affiliation network and the terminal number of a transmission terminal in a data transmission source by providing a means for storing network path data on an internetwork connection device. CONSTITUTION:When a frame A where the identification name of a network to which the transmission terminal belongs and the transmission terminal number are set to a transmission address is transmitted to a terminal 9, for example, a frame transmitterreceiver 10 in the internetwork connection device 3 receives the frame and a character retrieval device 12 collates a previously registered network identification name with the network identification name obtained from the received frame A. When they coincide, network path data to be transferred next is read, is set to the transmission address to be transmitted next, is added with the network connection equipment which is read to the frame A, whereby it is transmitted to a network 6 as a frame B. Data is similarly transferred in the network and is transmitted to the terminal 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inter-network data transfer system for a network in which a plurality of networks are connected.

[Conventional technology]

Conventionally, in this type of inter-network data transfer method, all the inter-network connection devices that pass from the source terminal to the destination terminal are specified as the transmission address of the transfer frame, and the software in the inter-network connection device specifies the transmission address from the transmission address section. The network route was selected and the data was transferred to the source terminal.

[Problem that the invention seeks to solve]

In the conventional inter-network data transfer method described above, the source terminal specifies all the inter-network connection devices that it passes through to the destination terminal, adds it to the data frame as transmission address information, and transmits it.
The network connection device that receives this uses software to determine the next transmission route based on the transmission address information of the received frame, transmits the frame to another network, and transfers the data to the destination terminal. Since the network route is selected by software, the processing speed is slow, and data cannot be transferred unless the sender or the sending terminal can specify all the routes to the destination terminal.

[Means for solving problems]

The inter-network data transfer method according to the present invention includes means for registering a character string of m characters in m words, collating an input character string with a registered character string, and outputting a match signal and a storage address of the matched registered data when they match. , a means for storing and reading network route data registered in advance, a means for adding the read network route data to a frame as a transmission address, a means for receiving a frame within the network, and a means for adding the network route data to the frame. and means for transmitting the frame.

[Effect]

In this invention, the data transmission source automatically selects a network route through the network connection device without being aware of the data transfer route by simply specifying the destination terminal's alias name and terminal number, and sends the data to the terminal within the destination network. Data transfer can be performed at high speed.

〔Example〕

FIG. 1 is a network configuration diagram showing an embodiment of an inter-network data transfer system according to the present invention. In the same figure, 1
is the first network to which BUSA is given as an independent network identification group (number), and 2 is the first network that has an independent terminal number within the network.
Terminals 3.4 and 5 connected to network 1 are inter-network connection devices whose detailed configuration is shown in FIG. 2, and 6. γ and 8 are LOOPA as independent network identification groups (numbers).
, LOOPB, and BUS B are given to the second network, third network, and fourth network. 9 is a terminal that has an independent terminal number within the network and is connected to the fourth network 8.

In the inter-network connection devices 3, 4 and 5 shown in FIG. 2, 10 has receiving means for receiving frames from the network and means for transmitting frames from the frame control device described below to the network, A frame transmitting/receiving device inputs a transmitting frame to an input terminal 10a and outputs received data from an output terminal 10b; 11 is a means for adding network route data retrieved from the following storage device to the frame as a transmitting address; The received data is input to the input terminal 11m and the input terminal 11 has a means for extracting the identification group.
A match signal is input to b, network route data is input to input terminal 11c, a network identification group is output from output terminal 11d, and output terminal 1
Frame control device 1 that outputs network route data from 1e
2 is a number of networks having independent network identification groups (numbers).
A string of characters (data) can be registered as m words (words).The input string (input data) and the registered string (registered data) are compared and if they match, a match signal is output from the output terminal 12b and a match is sent from the output terminal 12e. A character string search device 13 outputs the storage address of the registered data registered in advance, and a match signal is input to the input terminal 13m, a K address code is input to the input terminal 13b, and network route data is output from the output terminal 13e. A storage device that stores route data.

Note that the inter-network connection device 3 connects the first network 1 and the second network 6, the inter-network connection device 4 connects the second network 6 and the third network 7, and the inter-network connection device 5 connects the first network 1 and the second network 6. connects the third network 7 and the fourth network 8. Further, in the character string search device 12 and the storage device 13, collation line identification names and corresponding network route data are registered in advance as shown in the table below.

-1/' Also, Figures 3(a) to 3(d) are from terminal 2 to terminal 9.
FIG. 3 is a diagram showing changes in a transfer frame when transferring data to a computer; Note that FC8I and Fe12 are false detection codes.

Next, the operation of the inter-network data transfer system with the above configuration will be explained. First, from the source terminal, for example, terminal 2, as shown in Figure 3 (
Frame A shown in a), that is, the network identification name (BUSB) to which the destination terminal belongs and the destination terminal number (terminal B
) is sent to the terminal 9, the frame transmitting/receiving device 10 of the network connection device 3 receives the frame, and outputs the received data to the frame control device 11 from the output terminal 10b. Therefore, the frame control device 11 extracts the network identification name "BUSB" from the transmission address field of the received frame A and outputs it to the character string search device 12 from the output terminal 11d. Therefore, this character string search device 12 compares the network identification name registered in advance with the network identification name "BUSB" obtained from the received frame A, and when the network identification name "BUSB" matches, the output terminal 12b A match signal is outputted from the frame control device 11 and the storage device [13], and an address code in which the registered data is stored is outputted from the output terminal 12e to the storage device 13.

Therefore, upon input of the coincidence signal, the frame control device 11 sends network route data "LOOPA inter-network connection device 4" consisting of the network identification name and the network connection device name to be transferred next from the storage device 13. Frame A shown in Figure 3 (,) is the transmission address for reading data and transmitting it next.
Figure 3 (b) with 4m of LOOPA network connection equipment added to
) is sent to the second network 6. Next, the network connection device 4 receives this and, as described above, stores the next transfer information in the character string search device 12 and storage device 13.
Search for OOPB network connection device 5″ and frame control device 1
1 assembles a frame C shown in FIG. Furthermore, the inter-network connection device 5 receives the frame C shown in FIG. In this case, the frame D shown in FIG. 3(d) from which the transmission address added by the other network connection device has been removed is transmitted not to the network that received the frame but to another connected network. As a result, the frame A shown in FIG. Network connection device 4. The data can reach the fourth network 8 via the inter-network connection device 5 and be transferred to the terminal 9. In this manner, by repeating the above-described operations, data transmitted from one network can be transferred to another network and transmitted to a terminal within the network.

Although the frame control device 11 newly calculates and adds an error detection code when adding a transmission address, it is of course not necessary to add it. Further, in the above description, the address part is explained in units of bytes, but it is not limited to this, and it goes without saying that inter-network data transfer can be performed in units of bits as well. It goes without saying that it can also be used for routing in high-speed packet switching.

〔Effect of the invention〕

As explained in detail above, according to the inter-network data transfer method according to the present invention, the character string search device that searches for the network identification name of the sending address of the received frame and the storage device that stores the network route data are used to store the data. The network route data for transfer can be selected, added or changed as a transmission address by the frame control device, and transmitted by the frame transmitting/receiving device, so there is no need for the sender to specify all the network routes to be passed. , data can be transferred simply by specifying the network identification name to which the destination terminal belongs and the destination terminal number, and it has the advantage of being able to transfer data at a higher speed than data transfer using software processing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an inter-network data transfer system according to the present invention, FIG. 2 is a block diagram showing a detailed configuration of the inter-network connection device of FIG. 1, and FIGS. Figure 3 (d
) is a diagram showing changes in transfer frames to explain the operations in FIGS. 1 and 2. FIG. 1...First network, 2...Terminal, 3, 4 and 5
...Inter-network connection device, 6, 7 and 8...Second network, third network and fourth network, 9...Terminal, 10...
. . . Frame transmission/reception device, 11. . . Frame control device, 12. Fist.. Character string search device, 13. . . . Memory device.

Claims (1)

[Claims] In an inter-network data transfer method in which multiple networks are connected by nodes and data is transferred via other networks, when a character string of m characters can be registered in m words and the input character string is compared with the registered character string and they match. means for outputting a matching signal and a storage address of matched registered data; means for storing and reading network route data registered in advance; means for adding the read network route data to a frame as a transmission address; 1. An inter-network data transfer system comprising: means for receiving a frame within the network, and means for transmitting a frame with a network route added thereto.