JP4755164B2 - Packet stethoscope, packet auscultation method, packet auscultation program and recording medium - Google Patents

Description

  The present invention relates to a packet stethoscope, a packet auscultation method, a packet auscultation program, and a recording medium on which a packet auscultation device that supports monitoring of packets flowing on an IP network and identifying the cause of a network trouble is recorded.

  Tools for monitoring packets for identifying the cause of IP network connection problems have been developed. Currently, the most common tool has a function that lists and displays information obtained by decoding packets that flow on the network in units of packets, and allows you to view detailed information about the packets when you select an arbitrary packet. . However, this tool can analyze the IP network in detail, but since all the information is text information, a high skill is required for an operator who analyzes packet information.

Therefore, in order to facilitate the information analysis of this packet, a method of visualizing the two-way communication state between the communicating terminals by displaying a ladder (ladder), or displaying a plurality of terminals on a concentric circle, A method has been proposed in which a communication state between terminals is displayed in a concentric circle with a line segment and visualized (see, for example, Non-Patent Document 1).
Sumisho Information System Co., Ltd. homepage, network management product in product information, network analyzer, product name “sniffer portable”, address “http://www.scs.co.jp/sniffer/sales/portable_index.html”, 2007 November 9 search. Hobbs Co., Ltd. homepage, product information cable tracer general INDEX, “(1) Digital tone probe, smart probe”, address “http://www.hobes.co.jp/shop/cabletracer.html”, November 2007 Search on 9th of month.

  However, when the communication state is visualized by these methods, there is a problem that an expensive display device is necessary. Even if these methods are adopted, in order to grasp the cause of the IP network trouble, the skill of visually inspecting the visualized packet of the display device to identify the part to be noticed and estimating the cause However, the point that is required of workers is also a problem.

  On the other hand, a technology that understands the communication status by converting packets into sound is also known in order to realize a system with only speakers that are generally cheaper than display devices as output devices without requiring high skills from workers. (For example, see Non-Patent Document 2.) In this technology, when a tone signal transmitted from a tone signal transmitter is detected, it is notified as an alarm sound, so that the operator can identify the cable that is the target of the alarm sound from a plurality of cables. . However, there is a problem that it is difficult to grasp the detailed communication status of packets on the IP network.

  The present invention has been made to solve the above-described problems, and does not require a display device, and does not require high skill from an operator, and makes it easy to grasp the detailed communication status of packets on an IP network. It is an object of the present invention to provide a recording medium in which a packet auscultation method and a packet auscultation program are recorded.

  In order to achieve the above object, a packet auscultation device, a packet auscultation method and a packet auscultation program recording medium according to the present invention output a voice corresponding to the type of packet to notify the operator of the communication state. It was decided to.

  Specifically, a packet stethoscope according to the present invention converts an electric signal on an IP network into a bit string, divides the bit string into packets, and combines the packet signal into packets, and the packet signal receiver A voice processing unit that assigns a voice type to each packet type, and a voice reproduction unit that plays back the voices of the voice type assigned to the packet by the voice processing unit in packet order.

  In the packet auscultation method according to the present invention, a packet signal receiving unit converts an electric signal on an IP network into a bit string, divides the bit string into packets and collects them into packets, and a voice processing unit includes: After the packet signal receiving procedure, a voice processing procedure for assigning a voice type for each packet type to the packet from the packet signal receiving unit, and a voice reproducing unit assigning the packet by the voice processing unit after the voice processing procedure A voice playback procedure for playing back the voices of the selected voice type in packet order.

  The operator can listen to the communication state of the IP network with voice corresponding to the type of packet, and can record the voice rhythm of the normal communication state by the voice of the continuous packet. For this reason, when a rhythm different from the normal state is heard, the operator can grasp the detailed connection status even without high skill.

  Therefore, the present invention provides a packet stethoscope, a packet auscultation method, and a packet auscultation program that do not require a display device, require high skill from an operator, and can easily grasp the detailed communication status of packets on an IP network. A recorded recording medium can be provided.

  The voice processing unit of the packet stethoscope according to the present invention adds a buffer having a queue and a packet to which the voice type is assigned to the end of the queue of the buffer, and the packet exists in the queue of the buffer. In this case, the elapsed time from the time when the audio of the previous packet is reproduced by the audio reproduction unit is compared with a preset threshold value, and if the elapsed time is greater than the threshold, the first packet in the buffer queue is And a time adjusting means for paying out from the buffer.

  After the voice processing procedure of the packet auscultation method according to the present invention, before the voice playback procedure, the voice processing unit adds a packet to which the voice type is assigned to the end of the buffer queue, and the buffer queue When there is a packet, the elapsed time from the time when the audio of the immediately previous packet was reproduced by the audio reproduction procedure is compared with a preset threshold value, and the queue of the buffer is compared if the elapsed time is greater than the threshold value It is preferable to further include a time adjustment procedure for paying out the first packet from the buffer.

  Even when the time interval between packets is short, by adjusting the time of voice reproduction, it is possible to make the rhythm of the voice of consecutive packets easy for the operator to hear.

  The packet auscultation program according to the present invention causes a computer to execute the packet auscultation method. The packet stethoscope according to the present invention is controlled by a computer. When the computer executes the packet auscultation program according to the present invention, the packet stethoscope according to the present invention executes the packet auscultation method according to the present invention.

  Furthermore, the recording medium according to the present invention records a program for causing a computer to execute the packet auscultation method. Since the computer is equipped with the recording medium according to the present invention or connected to the recording medium according to the present invention, the computer can execute the packet auscultation program according to the present invention.

  The present invention records a packet stethoscope, a packet auscultation method, and a packet auscultation program that do not require a display device, require high skill from an operator, and can easily grasp the detailed communication status of packets on an IP network. A recording medium can be provided.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The embodiment described below is an example of the configuration of the present invention, and the present invention is not limited to the following embodiment. In the present specification and drawings, the same reference numerals denote the same components.

(Embodiment 1)
FIG. 1 is a block diagram showing the system configuration of the packet stethoscope 10 of this embodiment. The packet stethoscope 10 converts an electric signal on the IP network 5 into a bit string, divides the bit string into packet units, and collects the packets into packets, and the packet from the packet signal receiver 20 for each packet type. A voice processing unit 30 to which the voice types are assigned, and a voice reproduction unit 40 that plays back the voices of the voice types assigned to the packets by the voice processing unit 30 in the order of packets.

  The electrical signal acquisition means 7 is arranged at a location to be inspected in the IP network 5 and acquires an electrical signal on the IP network 5 at the location. For example, the electric signal acquisition means 7 connects the means for acquiring from the network card of the terminal that terminates the IP network 5 or the cable connecting the terminals from both upstream and downstream to the repeater type hub, It is means for copying the electrical signal flowing through the port to the inspection port. In the case of the latter means, there are cases where uplink and downlink electrical signals are acquired separately and merged and acquired collectively.

  The packet signal receiving unit 20 receives the electrical signal acquired by the electrical signal acquisition unit 7. Further, the packet signal receiving unit 20 converts the received electrical signal into a bit string, divides the bit string into packets, and collects the packets. For example, when the electrical signal acquisition unit 7 acquires uplink and downlink electrical signals separately, the packet signal reception unit 20 assigns metadata “up / down” to the packet depending on the acquisition source port. May be.

  The voice processing unit 30 includes a voice control unit 31 and a voice type assignment rule 32 and assigns a voice type for each packet type to the packet from the packet signal receiving unit 20. The voice processing unit 30 receives the packet transferred from the packet signal receiving unit 20 by the voice control unit 31.

  When receiving the packet from the packet signal receiving unit 20, the voice control unit 31 determines the type of the packet, inquires the voice type assignment rule 32 about the voice type, and assigns the voice type according to the response from the voice type assignment rule 32. Here, the packet type means a packet protocol type or a signal uplink / downlink type. For example, when the voice type assignment rule 32 has a table as shown in FIG. 2, the voice control unit 31 assigns the voice type according to the protocol type of the packet and the voice type according to the uplink / downlink type to the packet. . Furthermore, the audio control unit 31 instructs the audio reproduction unit 40 to reproduce the audio type assigned to the packet.

  The voice type assignment rule 32 records an assignment rule associated with a packet type and a voice type. When there is an inquiry from the voice control unit 31, the voice type assignment rule 32 refers to the assignment rule and returns a voice type corresponding to the packet type. FIG. 2 shows an example of the assignment rule of the voice type assignment rule 32. In the example of FIG. 2, an assignment rule that links the protocol attribute of the packet and the scale attribute of the sound is described. As the protocol layer goes up, so do de, les, mi and scales. In this example, the uplink / downlink attribute of the packet is associated with the octave.

  Also, the voice type assignment rule 32 may be a conversion formula instead of the table as shown in FIG. For example, the voice type assignment rule 32 quantifies the protocol layer height as a layer level, and has a relational expression such that the assigned sound type octave and the sound volume are directly proportional to the layer level. Also good.

  The audio reproduction unit 40 reproduces the audio type assigned to the packet according to the instruction of the audio control unit 31 and outputs the audio 50. For example, the audio reproduction unit 40 is a speaker.

  FIG. 3 is a flowchart for explaining a packet auscultation method of the packet stethoscope 10. The packet auscultation method of the packet stethoscope 10 includes a packet signal reception procedure S11 in which the packet signal receiving unit 20 converts an electrical signal on the IP network 5 into a bit string, divides the bit string into packets and collects them into packets, After the packet signal reception procedure S11, the processing unit 30 assigns an audio type for each packet type to the packet from the packet signal reception unit 20, and the audio reproduction unit 40 performs an audio process after the audio processing procedure S12. An audio reproduction procedure S13 for reproducing the audio of the audio type assigned to the packet by the processing unit 40 in the order of packets;

  In the packet signal reception procedure S <b> 11, it is determined whether the packet reception unit 20 has received an electrical signal from the electrical signal acquisition unit 7. Further, when receiving the electric signal, the packet receiving unit 20 converts the electric signal into a bit string, divides the bit string into packets, collects the packets, and transfers the packet to the voice processing unit 30.

  In the voice processing procedure S12, when the voice control unit 31 receives a packet from the packet signal receiving unit 20, the packet type is determined, the voice type is assigned to the voice type assignment rule 32, and the voice type is determined according to the response from the voice type assignment rule 32. Assign. Thereafter, the audio control unit 31 instructs the audio reproduction unit 40 to reproduce the audio.

  In the audio reproduction procedure S13, the audio reproduction unit 40 reproduces audio in the order of packets in accordance with instructions from the audio control unit 31.

  The packet stethoscope 10 can inspect electrical signals on the IP network 5 as described below in a packet auscultation method. For example, when there is a response from the server via the downlink using the HTTP protocol after the request to the server via the uplink using the HTTP protocol, the packet stethoscope 10 uses the same scale as “Mimi” and different octave voices. Will be issued. The operator can learn the rhythm of the normal state of the IP network 5 by repeatedly listening to this rhythm. For this reason, when the rhythm different from the normal state is heard, the worker can grasp which protocol is abnormal in the up / down direction.

  Therefore, in a situation where connection is not possible in the IP network 5, even a worker who does not have detailed technical knowledge can use the packet stethoscope 10 to determine which protocol can be communicated to the server using the uplink. It becomes possible to grasp the detailed connection status such as whether a response is returned to the downlink in response to the request only by voice. Further, since the packet stethoscope 10 does not require an expensive display device, the manufacturing cost can be reduced. In addition, since the worker only has to listen to the voice, it becomes hands-free and the cause of the trouble can be easily identified while performing other work.

  In order to inspect the electrical signal on the IP network 5 by the packet auscultation method, the packet stethoscope 10 may include a computer not shown in FIG. The packet stethoscope 10 may be connected to an external computer. The computer has a computer-readable recording medium, and a packet auscultation program for causing the computer to execute the packet auscultation method is recorded on the recording medium. For example, the recording medium is a hard disk. The packet stethoscope 10 inspects an electrical signal on the IP network 5 by a packet auscultation method according to an instruction from a computer executing a packet auscultation program.

(Embodiment 2)
FIG. 4 is a block diagram showing the system configuration of the packet stethoscope 11 of the present embodiment. The difference between the packet stethoscope 11 and the packet stethoscope 10 in FIG. 1 is that the voice processing unit 30 has a buffer 35 having a queue, and the voice control unit 31 receives a packet to which a voice type is assigned as a buffer 35. And when the packet is present in the queue of the buffer 35, the elapsed time from the time when the sound reproduction unit 40 reproduced the sound of the immediately previous packet is compared with a preset threshold value, The time adjustment means for paying out the first packet in the queue of the buffer 35 from the buffer 35 when the elapsed time is larger than the threshold value.

  Unlike the packet stethoscope 10 of FIG. 1, the voice control unit 31 does not immediately issue a voice playback instruction to the voice playback unit 40 after assigning a voice type to the packet, but temporarily receives the packet to which the voice type is assigned. Add to end of queue in buffer 35. When a packet addition request and a payout request are received from the time adjusting means, the buffer 35 adds to the queue and pays out by the first-in first-out method.

  In addition, the audio control unit 31 performs time adjustment control on audio reproduction by the time adjustment unit, independently of the above processing. The time adjustment means holds the reproduction time at which the audio reproduction unit 40 reproduced the previous packet in a register, and when the elapsed time from the reproduction time exceeds a threshold (for example, 0.1 second), the buffer 35 Request a withdrawal. The buffer 35 pays out the first packet in the queue, and the audio control unit 31 instructs the audio reproduction unit 40 to reproduce the audio type assigned to the packet. On the other hand, if the elapsed time does not exceed the threshold, the time adjustment means stops the payout request to the buffer 35 until the threshold is exceeded.

  5 and 6 are flowcharts for explaining a packet auscultation method of the packet stethoscope 11. FIG. The packet auscultation method of the packet stethoscope 10 is the same as that of the packet auscultation method of FIG. 3 but before the audio reproduction procedure S13, the audio processing unit 30 sends the packet assigned the audio type to the end of the queue of the buffer 35. When the packet exists in the queue of the buffer 35, the elapsed time from the time when the voice of the previous packet is reproduced in the audio reproduction procedure S13 is compared with a preset threshold value, and the elapsed time is compared with the threshold value. When it is larger, a time adjustment procedure for paying out the first packet in the queue of the buffer 35 from the buffer 35 is further provided.

  More specifically, the packet auscultation method of the packet stethoscope 10 consists of two processes. One is a packet addition process including a packet addition step S21 for adding a packet to the buffer 35 shown in the flowchart of FIG. The other is an adjustment process including a packet confirmation process S22 for confirming whether or not there is a packet in the buffer 35 and a threshold comparison process S23 for adjusting the audio reproduction time, as shown in the flowchart of FIG. That is, the time adjustment procedure includes a packet addition process S21, a packet confirmation process S22, and a threshold comparison process S23.

  In the packet addition process S21, the voice control unit 31 adds the packet assigned the voice type to the buffer 35 as a queue record of the first-in first-out method. Thereafter, the process returns to the packet signal reception procedure S11.

  In the packet confirmation process S22, the voice control unit 31 checks the buffer 35. If the buffer 35 is not empty, the process proceeds to a threshold comparison process S23.

  In the threshold comparison process S23, the audio control unit 31 holds the reproduction time of the packet immediately before the audio reproduction unit 40 reproduces in the register, and whether the elapsed time from that time exceeds the threshold (for example, 0.1 second). Judge whether or not. If the elapsed time from the reproduction time is a threshold, if it exceeds, a payout request is made to the buffer 35. If the elapsed time does not exceed the threshold, the payout request to the buffer 35 is stopped until the threshold is exceeded.

  In this manner, the packet auscultator 11 reproduces the voice type of the packet that is dispensed from the buffer 35 by the voice control unit 31 having the time adjusting means at an elapsed time that is equal to or greater than the threshold value. , It can be avoided that the worker cannot hear the rhythm due to the chain of packets.

  Similarly to the packet stethoscope 10 of FIG. 1, the packet stethoscope 11 is also connected to an internal computer or an external computer, and the packet auscultation program may be recorded on a computer-readable recording medium.

  Any IP network that uses packets can be applied to a public communication network, a dedicated network, a LAN (Local Area Network), and the like.

It is a block diagram explaining the system configuration | structure of the packet stethoscope which concerns on this invention. It is an example of the allocation rule which the audio | voice type allocation rule of the packet stethoscope which concerns on this invention has. It is a flowchart explaining the packet auscultation method which concerns on this invention. It is a block diagram explaining the system configuration | structure of the packet stethoscope which concerns on this invention. The flowchart explaining the packet auscultation method which concerns on this invention WHEREIN: The packet addition process including the packet addition process which adds a packet to a buffer is demonstrated. In the flowchart explaining the packet auscultation method according to the present invention, an adjustment process including a packet confirmation process for confirming whether or not a packet exists in a buffer and a threshold comparison process for adjusting an audio reproduction time is described.

Explanation of symbols

5: IP network 7: electrical signal acquisition means 10, 11: packet stethoscope 20: packet signal receiving unit 30: audio processing unit 31: audio control unit 32: audio type assignment rule 35: buffer 40: audio reproduction unit 50: audio S11: Packet signal reception procedure S12: Audio processing procedure S13: Audio reproduction procedure S21: Packet addition process S22: Packet confirmation process S23: Threshold comparison process

Claims (6)

A packet signal receiving unit that converts an electric signal on the IP network into a bit string, divides the bit string into packets, and collects the packets into packets;
A voice processing unit that assigns a voice type for each packet type to the packet from the packet signal receiving unit;
An audio reproduction unit that reproduces audio of the audio types assigned to the packets in the audio processing unit in packet order;
A packet stethoscope comprising. The voice processing unit
A buffer with a queue,
A packet assigned with the audio type is added to the end of the queue of the buffer, and when there is a packet in the queue of the buffer, an elapsed time from the time when the audio of the previous packet is reproduced by the audio reproduction unit; A time adjustment means for comparing a preset threshold value and, when the elapsed time is greater than the threshold value, paying out the first packet in the buffer queue from the buffer;
The packet stethoscope according to claim 1, comprising: A packet signal receiving unit that converts an electrical signal on the IP network into a bit string, divides the bit string into packets and bundles them into packets; and
An audio processing procedure, after the packet signal receiving procedure, assigns an audio type for each packet type to the packet from the packet signal receiving unit;
An audio playback procedure in which, after the audio processing procedure, audio of the audio type assigned to the packet in the audio processing unit is played in packet order;
A packet auscultation method comprising: After the audio processing procedure and before the audio playback procedure,
The time when the voice processing unit adds the packet to which the voice type is assigned to the end of the buffer queue, and when the packet exists in the buffer queue, the voice of the previous packet is played back by the voice playback procedure. A time adjustment procedure for comparing the elapsed time from the buffer with a preset threshold value and, when the elapsed time is greater than the threshold value, paying out the first packet in the queue of the buffer from the buffer. The packet auscultation method according to claim 3.   A packet auscultation program for causing a computer to execute the packet auscultation method according to claim 3 or 4.   A computer-readable recording medium on which a program for causing a computer to execute the packet auscultation method according to claim 3 or 4 is recorded.

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