JPH05173959A - Communication controller with protocol analysis function - Google Patents

Abstract

PURPOSE:To realize the communication controller which has an OSI communication function and an OSI protocol analysis function together. CONSTITUTION:An OSI protocol analysis data queue 5 of a communication control card 1 is directly connected to a MAC (medium control part) sublayer of an OSI application layer, and communication data in the MAC layer and higher layers required for analysis is temporarily stored. This stored data is transferred to a RAM disk file 8 of an OSI communication equipment 2 as a device on the host CPU side and is analyzed by a mounted OSI protocol analysis program 10, and the analysis result is stored in a hard disk 11. This path for protocol analysis is constituted in parallel with an essential data communication path to realize the communication control which has the OSI protocol analysis function also.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control device used in a communication system using OSI (abbreviation of open system interconnection, which is a communication standard defined by ISO).

[0002]

2. Description of the Related Art In OSI, logically the seventh layer (physical layer) is used.
Since the communication model is adopted for communication, the communication frame is complicated, and it is necessary to use a protocol analyzer dedicated to OSI for analyzing the frame on the network. The protocol analyzer is a measuring instrument that captures data on a communication line or transmits / receives a signal as a communication partner to / from a communication control device such as a terminal or a host computer to analyze an error in a communication procedure.

[0003]

The protocol analyzer described above is expensive, and it is troublesome to separately prepare and connect it. However, with the communication control device alone,
Since it has a simple error analysis function at best, it cannot analyze communication frames.

The present invention has been made by paying attention to such a problem, and an object thereof is to establish a communication function of OSI and an OS.
It is to realize a communication control device that also has the I protocol analysis function.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a seventh aspect of OSI.
Supports protocols up to layer (application layer)
A communication control card having a data queue for SI communication and a data queue for OSI protocol analysis, and an OSI communication device for exchanging data with the communication control card to process data are provided. , OSI
A communication program and an OSI protocol analysis program, a RAM disk file for storing the data stored in the protocol analysis data queue of the communication control card, and data stored in the RAM disk file are analyzed by the OSI protocol analysis. It has a storage means (hard disk) for storing a result analyzed by a program.

[0006]

The OSI protocol analysis data queue of the communication control card is directly connected to the MAC (media control unit) sublayer of the OSI7 layer, and temporarily stores communication data of the MAC layer and above required for analysis.

Next, the stored data is transferred to the host C.
It is transferred to the RAM disk file of the OSI communication device, which is the device on the PU side, analyzed by the OSI protocol analysis program installed, and the analysis result is stored in the hard disk.

By constructing such a path for protocol analysis in parallel with the original data communication path, a communication control device having an OSI protocol analysis function is realized.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.

The communication control device according to the present embodiment has a communication line 1
5. In addition to the function of exchanging data with the terminal A via the node 16, for example, it has a function of analyzing a communication protocol when a communication failure or the like occurs.
Communication control card 1 for controlling the OSI communication protocol
An OSI communication device (device on the host CPU side) 2 equipped with a data processing program, a display 12,
It comprises an interface device such as a keyboard 13 and a printer 14.

The communication control card 1 includes a control program 4 that supports up to the seventh layer (physical layer) of OSI and O
Data queue (queue) 5 for SI protocol analysis,
It has a communication data queue (queue) 6.

Further, the OSI communication device (host CPU) 2
Has a communication control card driver 7, a RAM disk file 8, an OSI communication program 9, an OSI protocol analysis program 10, and a hard disk 11.

Next, the operation of this embodiment will be described. Normally, OSI communication is performed using the OSI communication program 9 and OSI7.
It is performed with the layer control program 4 via the communication data queue 6.

When the user side uses the OSI protocol analysis function, the operation is as follows. (1) First, the OSI protocol analysis program is started by input from the keyboard 13 to initialize the OSI protocol analysis data queue 5 on the communication control card 1 side. (2) The OSI protocol analysis queue 5 is directly connected to the MAC (media control unit) sublayer 7 of the OSI 7 layer, and data equal to or higher than the MAC is stored in the communication data queue 6 and initialized at the same time. The data is also stored in the data queue 5 for protocol analysis. (3) The communication control card driver 7 handles the data in the communication data queue 6 and at the same time stores the data in the protocol analysis data queue 5 in the designated RAM disk file 8. (4) OSI protocol analysis program 10 is RAM
The analysis is executed based on the information stored in the disk file 8, the OSI layers are divided and displayed on the display 12 (or output to the printer 14), and the analysis result is stored in the hard disk 11. .

[0015]

As described above, according to the present invention, the communication control device is provided with the OSI protocol analysis function, so that when a communication failure occurs, the same communication can be performed without preparing an expensive dedicated protocol analyzer. This has the effect that the device can perform protocol analysis.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of a communication control device of the present invention.

[Explanation of symbols]

 1 Communication Control Card 2 OSI Communication Device 4 OSI 7 Layer Control Program 5 Protocol Analysis Data Queue 6 Communication Data Queue 7 Communication Control Card Driver 8 RAM Disk File 9 OSI Communication Program 10 OSI Protocol Analysis Program 11 Hard Disk 12 Display 13 Keyboard 14 Printer

Claims (1)

[Claims] 1. A communication control device used in a communication system using OSI (Open System Interconnection), which supports protocols up to the seventh layer (application layer) of OSI, and is for OSI communication. A communication control card (1) having a data queue (5) and an OSI protocol analysis data queue (6), and an OSI communication device (2) for exchanging data with the communication control card and processing the data. And this OS
The I communication device (2) is a RAM for storing the OSI communication program (9) and the OSI protocol analysis program (10), and the data stored in the protocol analysis data queue (6) of the communication control card.
A protocol analysis function comprising: a disk file (8); and a storage means (11) for storing a result of analyzing the data stored in the RAM disk file by the OSI protocol analysis program. Communication control device to have.