SU1658157A1 - Device for computer network users diagnostics - Google Patents

Abstract

The invention relates to computing technology. The aim of the invention is to increase the reliability of the control. To do this, a bus switching unit, a multi-channel unit for converting a parallel code into a device, was inserted into the device containing a mode setting and indication unit, a parallel exchange register unit, a parallel communication channel amplifier unit, a control unit, a buffer register and a program memory unit. Serial and block amplifiers of serial communication channels The device provides reliable control of multichannel network subscribers in autonomous and operating modes 6 or

Description

The invention relates to computing and can be used to verify subscribers working on computer networks.

The aim of the invention is to increase the reliability of the control.

FIG. 1 is a block diagram of the device; in fig. 2-5 are examples of the technical implementation of a control unit, a multichannel unit for reversible conversion of a parallel code to a serial block of parallel exchange registers, and a clock generation unit; Fig. 6 illustrates examples of connecting a device in the variants of autonomous testing of a mono channel subscriber (a), multichannel subscriber (b) , in listening mode (c) and translation mode (d).

The device contains (Fig. 1) a mode setting and indication unit 1, a control unit 2, a clock generation unit 3.

multichannel block 4 of reversible conversion of parallel code into serial block 5 of parallel exchange registers block 6 of program memory, buffer register 7, block 8 of bus switching, block 9 of amplifiers of serial communication channels, block 10 of amplifiers of parallel communication channels, bus 11 commands and data , data bus 12, address bus 13, control bus 14, device bus (lines) 15-22 interconnects, device bus (lines) 23-27.

The mode setting and indication unit 1 is intended for manual input and indication of commands and data and contains (FIG. 1) a keyboard (manual input unit) 28, an indication unit 29, a decoder 30 and a reset pulse generator 31 consisting of a reset button 32, register 33 and the capacitor 34. the element is NOT 35.

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The control unit 2 is designed to form control commands for the device units, generate data, analyze the data and the state of the verification process and contain (Fig. 2) a processing unit 36, a crystal oscillator 37, a resistor 38 connected to the positive power supply bus 39. FIG. Figure 2 shows the option of switching on the BIS 1816BE35 as a logical processing node 36.

The multi-channel unit 4 of the reversible conversion of a parallel code into a serial one is intended for the exchange of information between serial communication channels of the network subscribers being tested (via linear amplifiers of block 9) and parallel buses 12-14 of the device. Unit 4 should provide the ability to work with no less than with two serial communication channels, and can be built on a standard LSI type 580BB51. FIG. 3 shows an example of implementation of block 4 on an LSI of type 58QBB51, designed for operation in an asynchronous start-stop mode of operation with two communication channels. Block 4 contains nodes 40 and 41 (FIG. 3) of the reversible transformation of parallel-serial codes.

Block 5 of the parallel exchange registers is designed to exchange information between the device and the tested subscribers with parallel interfaces, and subscribers can be connected directly via buses 27 or through amplifiers of block 10. Block 5 must have at least two parallel registers 42 and 43 (Fig.4 ), the bit of which is determined by the number of lines of the interfaces of the subscribers being checked. FIG. 4 shows an example of the implementation of registers 42 (43) of the IBS580BB55.

The clock generation unit 3 is used to generate a sequence of clock pulses corresponding to transmission speeds over serial channels. Unit 3 contains (Fig. 5) programmable node 44 counting time, which can be used LSI type 580VI53, and a resistor 45.

Block 6 of the program memory is designed to store programs and constants required for the implementation of subscriber verification algorithms and the interaction of device blocks. Block 6 can be made in the form of a permanent memory, for example, based on a 573RF2 chip.

The device allows verification of various types of network devices (subscribers). Variants of connecting device 46 and subscribers 47 and 48 are shown in FIG. 6. Subscriber 47 is a technical or software / hardware (terminal, computer, printer),

connectable to the network through a single interface. Subscriber 48 here is a kind of hardware or software that operates on a network through a set of logically related

0 interfaces (channel concentrator and / or terminals, network node, data transmission equipment). These subscribers should be tested by testing several interfaces simultaneously.

5 The device works as follows.

After pressing the reset button 32, the driver 31, unit 2 proceeds to the selection of a command from the zero cell of memory block 6

0 programs exhibited on the bus 11 the lower eight bits of the address, accompanied by the generation of signals in lines 16 and 15. The buffer register 7 on the signal in line 16 captures the lower bits of the address and red5 gives them to the bus 13 addresses. The upper four bits of the address are transmitted to the bus 13 directly from the output of block 2,

Block G of the program memory at the address on the busbars 13 and the strobe signal in the line

0 15 issues a command to bus 11, from which the program of the device starts. Unit 2 in accordance with the program proceeds to scan the display unit 29 and the keyboard 28. Unit 2 through the same

5, the time intervals expose on lines 21 the binary code of the address of the element with which the exchange will take place in this scan cycle. In the case that the indication unit 29 is scanned, unit 2 puts the port to which the lines 20 are connected to output and outputs the code of the corresponding character to it. If the keyboard 28 is scanned, block 2 translates the port into input mode and, through lines 20, enters the code defining the key position in fear. The decoder 30 converts the binary-coded address to a position code, with

0 by which the display element of the node 29 is selected or the position in the keyboard 28 is activated, Block 2 through block 8, address bus 13, data bus 12 and control bus 14 has the ability

5 to exchange data and control words with blocks 3-5.

In the interactive setting mode, the operator of the device, using the mode setting and indication unit 1, writes information about the

the required modes of operation of blocks 5 3 and 4, as well as the commands defining the algorithm of the device operation in various modes of checking subscribers of the computer network. After that, the device starts up in one of the following modes:

The device operates in the following modes (Fig. 6): offline mono-channel test mode; offline multichannel verification mode; listening mode working configuration; translation mode and control in working configuration.

In the offline mono-channel test mode (Fig. 6a), device 46 is connected to subscriber 47 via one of the parallel channels without buffering 27, parallel with buffering 23 and 24, serial 25 or 26.

In this mode, block 2, via bus switching unit 8 and bus 12, transmits necessary commands from its internal memory to multichannel block 4, block 3 or block 5, accompanying the issuance of commands to buses 11 and

12 relevant information on the bus

13 addresses and control bus 14 After setting the operation modes of blocks 543, block 2 executes the algorithms on memory of block 6 V, and manual a1 block 2 reads information from carbon-ga 47 through one of the selected channels. this information, that y, m 9 to the operator for the visual, opydigch, reads the data entered by the operating system from the keyboard 28, and transmits both measures from one and the selected exchange channels, and 4

In the offline testing mode (Fig. 66), the device -16 is connected to the computational SRZH node of the subscriber, - to the national subscriber) 48 to test its performance in various modes. For this, channels 27, 23, 24, 25 and 26 can be used. Difference of this mode from the previous one, block 2 communicates with network node or multichannel subscriber 48 simultaneously via several exchange channels, and in the combination that is necessary to perform a full / full check. Analyzing information that passes the worm 48 do t conclusion about the state of the subscriber 48.

In the listen-in mode, the operating configuration hour (Fig. 6c), device 4b is connected to the channel (by channels) from the subscriber (the primary subscriber, for example node 48 with the subscriber - (for example, by terminal or computer)). Block. 2 transmitting to the 4 p S blocks the com comms that configure them to work pv to enter information on the bus 2 data

according to a predetermined algorithm, block 2 transmits data from the corresponding channel 27 17 or 18 via blocks 4 and 5, bus 12, bus switching unit 8, bus 11, port 1 of the CU2 and bus 20 to the display unit 29 for visual observation B the mode of translation and control of the working configuration (Fig. 6d), the device 46 is included in the rupture of the channel (s) connecting the node 48 and the subscriber 47

Unit 2 for determining the modes sends commands to blocks 5 4 and 3, and then proceeds to the execution of the operation algorithm, according to which it can receive data from one channel (for example, 25 and transmit them to another channel (for example, 26) (translate data) In the process of broadcasting unit 2 may, in accordance with the algorithm

to issue broadcast

data to display unit 29 for visual inspection,

transmit broadcast data to one of the free channels for

transfer to another device (data tap),

enter data and commands with the key in the broadcast message | s 28 and transmitting them to the channel associated with node 48 or subscriber 47 to control the operating unit, pami.v

Thus, the device p-ochchet oo. shcheo are the monokan and. and the subscribers of the subscriber s in the automatic

In the mode and in the configuration modes (without se disassembly), the o6t was eventually harvested by the more reliable | .1 field of re-iospospospol, individual subscribers and their working configurations.

feature for network configurations and their subscribers

Claims (1)

Claims Device for diagnosing subscribers computer network, with the holding unit for setting the target and indication by the output connected to the reset inputs of the block, the parallel exchange register and the control unit whose first and second outputs are connected to the gray corresponding to the synchronization inputs of the program memory block and the buffer register, the first group of outputs from the group of control inputs of the block of registers of parallel exchange of the first group information inputs-outputs of the subconnect to the first group of information in the chorus; u -trudes of the napa.i amplifier block; communication channels; the second group of informational inputs-outputs and the third group of informational inputs-you Parallel exchange register block moves are a group of device data I / O units for connecting subscriber’s tested code to input and output groups, characterized in that, in order to increase the control accuracy, a bus switching unit, a multi-channel reversible parallel code conversion unit in series, a block of amplifiers of serial communication channels and a block of generation of clock pulses, with the first group of information inputs-outputs and the second group of outputs Controls are connected respectively to the group of informational input-outputs and the group of gating inputs of the mode setting unit, and the indication, the group of informational inputs of the buffer register, and the group of outputs of the programmable memory unit are connected to the second group of informational inputs-outputs of the control unit and the first group of informational inputs -outputs of the bus switching unit, the second group of information inputs-outputs of which are connected to the second group of information inputs-outputs of the block of parallel exchange registers, the first the group of information inputs / outputs of the multi-channel reversible conversion unit parallel code in the serial and group of information inputs-outputs of the clock generation pulses, the group of address inputs of which are connected to the third group of information inputs-outputs of the control unit, the group of outputs of the buffer register and the group of address inputs of the program memory block, the first group of information inputs-outputs of the block amplifiers of serial communication channels is a group of input-output devices for connection to information inputs and outputs of a serial code nta, and the second group of information input-outputs is connected to the second group of information inputs-outputs of the multichannel block of reversible conversion of the parallel code into a serial one, the clock input of which is connected to the output of the clock generation unit, and the groups of control inputs - with the first group of outputs of the block control, a group of control inputs of a clock generation unit and a control input of a bus switching unit. the reset input of the multi-channel block of the reversible transformation of the parallel code to serial. connected to the output of the mode setting and indication unit. CSI  I. CVI CNJ about 5 J "T Uj CNi 00 in CD Uj l x TGTTSh-i RTC CIS / 4J 19.2 W FIG. five 6 23 (25} to l 26 (2 W Sh 2Ts26) 6