JPH0756990B2 - Communication control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a communication control device in a communication network system, and more particularly to a communication control device suitable for testing a network system.

[Conventional technology]

As the network scale increases, it tends to be difficult to test a network system by connecting an actual terminal to a communication control device.

Conventionally, as a method for testing a network system without an actual terminal, as described in, for example, JP-A-57-141159, a package-type pseudo call device including a microprocessor and a ROM is prepared and the device is tested. There is a method of simulating the operation of the real terminal by replacing the package accommodated in the line corresponding part of the communication control device with a function equivalent to that of the real terminal.

[Problems to be Solved by the Invention]

The above-mentioned conventional technique does not take into consideration the fact that the required number of pseudo packages increases remarkably as the number of lines that can be accommodated by the communication control device increases. That is, in the above-mentioned conventional technology, in the tendency that the network scale becomes large and the number of lines that can be accommodated in the communication control device increases, unless a pseudo package is installed in all the line-corresponding parts, a high traffic test or the like cannot be performed. Although it is not possible, it is impossible to actually install hundreds to thousands of pseudo packages, which causes a problem that a high-traffic test of a large-scale network system cannot be practically performed.

An object of the present invention is to provide a communication control device that enables a high traffic communication test of a network system without connecting an actual terminal.

[Means for Solving the Problems]

To achieve the above object, the present invention provides a microprogram type line control unit for controlling physical layer layers such as a plurality of subscriber lines and relay lines, and a communication control unit for controlling a frame level and a packet level layer. In a communication control device composed of a configuration control unit having network configuration information and a supervisor for controlling these control units as a whole, means for storing a pseudo terminal simulation program and a real terminal connection program, and a line control unit It is characterized in that a means for selecting which of the pseudo terminal simulation program and the real terminal connection program is loaded is provided for each line.

[Work]

Either the pseudo terminal simulation program or the real terminal connection program is loaded for an arbitrary line of the line control unit in the communication control device. As a result, it is possible to arbitrarily set a mode in which an arbitrary line operates by connecting a real terminal and a mode in which it operates as a pseudo terminal, and a high traffic test of the network can be performed without connecting the real terminal.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows an overall configuration diagram of an example of a network system targeted by the present invention. In FIG. 2, 1 is a host computer, 2 is a channel interface, 3 is a communication control device, 4 is a subscriber line, 5 is a relay line, and 6 is a terminal device. For example, the data from the terminal device 6 is the subscriber line 4
It reaches the communication control device 3 via. The communication control device 3 controls the other party and transfers the data to the host computer 1 via the channel interface 2 at some time. At another time, data is transferred to another terminal device 6 via another subscriber line 4 accommodated in the same communication control device 3. At some other time, the terminal device 6 accommodated in the communication control device 3 via another communication control device 3 via the relay line 5
Communicate with.

The present invention relates to a communication control device 3, and performs a high traffic communication test or the like in the network system on a real terminal device
Is to enable without connecting.

FIG. 1 is a block diagram of an embodiment of the communication control device 3 according to the present invention. This communication control device 3 has a program file 1
1, a supervisor 12, a line controller 13, a communication controller 14, and a configuration controller 15. The program file 11 stores selection data 111, a pseudo program for a pseudo terminal (a program for simulating a pseudo terminal) 112, a micro program for a real terminal (a program for connecting a real terminal) 113, a communication control section program 114, a configuration control data 115, etc. is doing. The program file 11 is stored in the host computer 11
May be given to 2. The supervisor 12 has a selection circuit 120. The line control unit 13 includes a plurality of line adapters 131, 132,
It consists of 133, ....

Line control unit 13 that accommodates a plurality of line adapters 131, 132, ...
Has a function of controlling the physical layer layer of the line.
On the other hand, the selection data 11 stored in the program file 11
1 is provided for each line adapter, and indicates whether the corresponding line adapter should select the pseudo program 112 for the pseudo terminal or the micro program 113 for the actual terminal. The supervisor 12 first fetches the selection data for the line adapter 131 from the program file 11 and selects the selection circuit 120.
When the selection data is "1", the pseudo program 112 for the pseudo terminal is selected, and when it is "0", the micro program 113 for the actual terminal is selected and loaded into the line adapter 131. By repeating the same procedure, each line adapter 131, 132, 133, ...
The pseudo program 112 for the pseudo terminal or the micro program 113 for the actual terminal in 11 is loaded. A flow chart in this case is shown in FIG.

The communication control unit 14 has a function of controlling the frame level and the packet level layer, in which the communication control program 114 stored in the program file 11 is used by the supervisor 1
It is loaded under the control of 2. Also, the configuration control unit 15
Has network configuration information and line attribute information, and has a function of controlling the configuration. The configuration control data 115 stored in the program file 11 is similarly loaded under the control of the supervisor 12.

Next, a specific operation example of the communication control device 3 will be described with reference to FIG. In Figure 4, line adapter 131 and line adapter 1
33 is a pseudo-terminal microprogram, line adapter
The microprogram for the actual terminal is said to be loaded in 132 and the line adapter 134. Each line adapter consists of a communication adapter 201 and a micro program control unit 2.
02 and line interface 203.

Since the line adapter 131 is loaded with the pseudo program for the pseudo terminal, the data from the line adapter 131 reaches the communication control unit 14 via the supervisor 12 via the communication adapter 201, and then the configuration control unit 15 operates the network. The route and terminal of the other party are determined from the configuration data of, and the line adapter 133 is selected. Therefore, the data of the line adapter 131 further reaches the line adapter 133 via the supervisor 12, and the pseudo program for the pseudo terminal of the line adapter 133 can receive the data and transfer the data.

Since the line adapter 132 is loaded with the real terminal microprogram, data from the terminal device 6 connected to the line adapter 132 is transferred to the line interface 20.
3, through the micro program control unit 202, via the communication adapter 201 via the supervisor 12 to reach the communication control unit 14, the configuration control unit 15 determines the route and terminal of the other party from the network configuration data, the line adapter 134 The terminal device 6 to be connected is selected. Therefore, the data further reaches the line adapter 134 via the supervisor 12, reaches the terminal device 6 connected to the line adapter 134, and data communication can be performed.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, in a network system accommodating hundreds to thousands of terminal lines, it is possible to perform a high traffic test by connecting unrealizable terminals of the actual equipment without requiring connection of the actual equipment terminals. It can be achieved without the need for product quality verification inside the factory.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a communication control device of the present invention, FIG. 2 is a configuration diagram of an example of a network system to which the present invention is applied, and FIG. 3 is loading of a pseudo terminal microprogram or a real terminal microprogram. FIG. 4 is a diagram showing a specific operation example of the communication control device. 1 ... Host computer, 3 ... communication control device, 6 ... terminal device, 11 ... program file, 112 ... pseudo-terminal microprogram, 113 ... actual terminal microprogram, 12 ... supervisor, 120 ... selection Circuit, 13 ... Circuit control unit, 131-134 ... Line adapter, 14 ... Communication control unit, 15 ... Configuration control unit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masao Takizawa Inventor Masao Takizawa, No. 1 Horiyamashita, Hadano City, Kanagawa Pref., Kanagawa Factory, Hiritsu Seisakusho Co., Ltd. (56) Reference JP-A-61-74438 (JP, A)

Claims (1)

[Claims] 1. A communication control device comprising a plurality of line control units for connecting at least one communication line, means for storing a pseudo terminal simulation program and a real terminal connection program, and the plurality of line controls. Each of the units is provided with means for loading one of the pseudo terminal simulation program and the real terminal connection program, and the line control unit operates based on the loaded program. Control device.