JPS5999843A - Network connecting system - Google Patents

Abstract

PURPOSE:To attain a flexible network constitution by converting a logical and a physical addresses by a centralized control station and transferring information to a gate device to simplify the operation and to have only to change the address conversion information of the control station. CONSTITUTION:A means producing an address between networks to which a terminal 105 of opposite party belongs is provided in the centralized control station 201 of a system, where plural local area networks having different numbering zones are connected mutually. The number is changed in the control station 201 for the address by a producing means in case of the connection between networks and the converting information is transmitted to gate devices 108(108-1, 108-2) in the transmission local area network. Communication is attained between terminals 105 based on the modifying information. As a result, it is not required to produce the address and to change the function by the device 108, and the forming of a mapping table is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inter-network connection system for interconnecting a plurality of local area networks.

Conventionally, in this type of system, when interconnecting networks, it was necessary to generate the address of the gateway device installed in each network. requires an address translation function, but as the system becomes larger, the equipment for address translation not only becomes larger but also becomes more complex.

This barrier device must store the address of the entire system, and if the location of the accommodating terminal is changed or expanded, it is necessary to change all the barrier devices located in each network. This had the disadvantage that operations were complicated.

The purpose of the present invention is to install a centralized control station and perform centralized control to eliminate the complexity of number conversion.
It is an object of the present invention to provide an inter-network connection system that has increased flexibility for changes and can easily interconnect a plurality of local area networks.

According to the present invention, a plurality of 11
=-5/Stage for interconnecting power area networks
In the system, means for generating addresses within the network to which the two communication partner terminals belong is provided in the central control station of the system, and in the case of inter-network connection, the address generating means is provided with a number exchange function at the upstream control station. ,.

An inter-network connection characterized in that the conversion information is transferred to a barrier device in the originating LI Boolean area i node work (7, hereinafter, communication is performed between the target terminal and the target terminal using the conversion information) Next, two network control devices according to the present invention will be explained with reference to the drawings.

FIG. 1 shows an example of the construction of a conventional integrated workpiece to which the present invention is applied.

, 7, 101, 104.1o3 is a local-1 network with different configurations (■,
AN) medium (-) are respectively called branbo-type, loop-type, and star-type yarns. V-knee-like configurations include J, donkey ℃, and branch type cisnano・1o1 from one terminal 105. When communicating with the terminal 106 in the other blunt V stem 102 via the loop system system 104, or when communicating with the terminal in the star system 106 and the terminal in the loop thread system 104, ,
first.

In the throat work belonging to loop yarn 1/spum 104',>
107 is a branched yarn (2 is a barrier device that belongs to 7+1); in the case of a star type, it is connected to a barrier device built in 4.103. ., then these barrier outfits] 6-2,
[I run the address conversion function in order to configure the address of the other party's terminal.

In this case, +) iJ As mentioned above, the conversion function is complicated (secondary), which inevitably causes problems when changing or adding terminals.

Figure 2 shows examples 1 to 2 of a simple system configuration as an embodiment of the present invention.

In this figure, 201 indicates a centrally installed control station, and an address conversion device (6) is shown there. General combinations, - evening, etc. are used.

Now, call information including the destination address is sent from the copy book 105. In reality, as in packet switching type 79, bucket 1 containing the address is transferred only at the beginning of the data transfer.
-4 and later, there are two methods: one is to communicate using logical channel numbers, and the other is to include the other party's address in each pakut. Here, we will explain the latter case (- is also applicable to FliJ).

5 are diagrams for explaining the flow of information in the embodiment of FIG. 2. FIG. In this figure.

The call information including the destination address L/S from the terminal iOS passes through the address filter of the gateway station 108-1.

By detecting this, it is determined that the address is not for private users, and after converting it to the address of the control station 201, it is transferred to the l-tooth station 107-1 of the loop system 104. This information iit, , is transferred to control station 2 [] 1 through the path 3, where,
Addresses are generated and translated.

Transferred to the barrier devices 108-, -1 via the path 6
, the barrier device t 108-1 performs at1/s conversion based on this information, and transfers it to the terminal 106 of the other branch system via the path (2).

After that, a path is set up between the terminals 105 and 106, and the bus setting method is the same known technique as in the case of the normal bag node exchange method. Because it's cold.

I will omit the explanation. Paths set in such T order■
Through the +, the data axis of the bribe, the transmission is sent 4, the 4th
The figure is applied to the F, E example.

401 is a message sent from the originating terminal 105. Kanmonso @ 108-1, which received this Bakut 401, 11) determines from the AO that the tip of the leaf is other than the work, and returns the information of the Pakeno 1 formant shown in 402 ν<-1 Loop 4', /
1 to transfer to Subumu, and 402 format 2.
- and the CA is e; control station adrep.

OA is your address. This information is open side 1 station 20
If you can get it at 1, you will get 1. )Ao, SAo is used as beta to generate ,SA, to the other party's address ().

406 format allows barrier device +08. -1・\
Send it back. In the barrier device 108-1, this 4 ('J
Based on the information in 3, when the call setting information shown in 404 is transferred to the loop system system, the barrier device ff of the partner network 102, 1013-2 is captured by I) A, and the terminal 106 of 108-2 distribution F is captured. will be forwarded to. Here, DA, SA, are unique numbers C for the entire system.
According to the example of the 1-point system, Jl.
ing,.

Figure 5 shows an example of the μ-type south number system that is applied to the embodiment described in Section 2.13For example, 501 is 41 in Figure 4.1
D Ao and S At1 shown in -C represent the contents of -C, of which (4 forms a closed number area, 1<) represents the bit indicating whether to leave the network or not. .If 0 = 1, the 9th order A II) 1τ1
is used for communication between the terminal and the partition IIIj3.
For example, specify the service name or the terminal type (2).

Assign an address determined by the system. Therefore, this address directly points to the end of the other party's ・ke;
There's nothing wrong with that. Also, N5-AD of 502 is from node station to
51 mi, 0N-Ar, ) is each i/
Steno, (1 shows the 11 rus of the barrier device to which it belongs. DTE
-ADH indicates the actual terminal address, that is, the physical address. Conclusion and 12.

The contents of D A + and S A + are converted into physical addresses as shown in Figure 5 (-) 3, and - C, 111 side 1 station 201 converts the logical address and physical address. j/: (pause...-) The main job is to perform the conversion.

Each barrier device processes information from the control station (see Section 2.7).

64th D (-1 like address manobingdeso L
・With ・I old t L) Ao, L) from the terminal
A (r for the following f3 regarding H) A,,
Communication can be performed by using SA. , : In the address mapping solution, 6
U1's information is transferred from the terminal under my control.

Information 602 is transferred from a centrally installed control station.

In addition, in the case of reception, (1) sent from the hand barrier device, C is SAo for A, and SAo for SA]
) It is necessary to generate tables 603 and 604 for Aoi pair U;:,:.

From the following description, it is clear that according to the present invention, a centrally installed control station provides a logical address system.

By converting the physical address and transferring the information to the barrier device, it becomes very easy to create a mapping table created by the barrier device, which has a significant effect on the operational aspect of the system. is big.

Moreover, since this control station is of a centralized type, the address conversion information only needs to be changed at the control station.
1J capability and great flexibility in network configuration.

[Brief explanation of drawings]

FIG. 1 is a dimensional drawing showing an example of the configuration of a conventional integrated sotower to which the present invention is applied, and FIG. 2 is a schematic diagram. Figure 5 showing a simple configuration example as an embodiment of the present invention.
4 is an explanatory diagram showing the flow of information in the embodiment of FIG. 2. FIG.
Figure 15 is a diagram showing an example of a specific numbering system applied to the embodiment in Figure 2, and Figure 6 is a diagram showing an example of a specific numbering system applied to the embodiment in Figure 2. FIG. 3 is a diagram showing an applied address mapping boosol. In the figure, 101 and 102 are bra>'y-system system ram, 104 is /L-p yarn system, 1f15.106
C terminal, 107. -1-107-3 is 8-doste-john. 108-1, 108-, -2 are barrier devices, 201 is a control station, 1° shape 4 Figure 5 Figure 248- Figure 6

Claims (1)

[Claims] 1. In a system that interconnects a plurality of local area networks with different number ranges, 2. A central control station of the system is provided with a means for generating an address within the network to which the communicating terminal belongs, and in the case of inter-network connection, The address generation means converts the number at the control station, transfers the conversion information to a barrier device in the originating local area network, and thereafter communicates with the partner terminal based on the conversion information. An inter-network connection method characterized by: