JP5360434B2 - COMMUNICATION DEVICE, COMMUNICATION MONITORING METHOD, AND COMMUNICATION MONITORING PROGRAM - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication apparatus, a communication monitoring method and a communication monitoring program which allow communication of a target device to be monitored in details by a simple configuration. <P>SOLUTION: A communication apparatus 101 comprises: an operation processing section 11; one or a plurality of target devices 13 connected to the operation processing section 11 via an internal bus; and an input/output section 12 for sending and receiving data between itself and other communication apparatus via a network 31. The operation processing section 11 creates monitor data by copying data transferred on the internal bus or data transferred from the operation processing section to the internal bus, and transmits the monitor data to the network 31 via the input/output section 12. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a communication apparatus, a communication monitoring method, and a communication monitoring program, and more particularly to a communication apparatus, a communication monitoring method, and a communication monitoring program for monitoring communication of devices in the apparatus.

  Monitoring data communication between devices in the apparatus and data communication with the outside of the apparatus using communication media is important in the development and debugging of the apparatus.

  As an example of a technique for monitoring such data communication, there is a syslog protocol (for example, “IT terminology dictionary e-Words”, [online], [search on January 25, 2011], Internet <URL: http: //e-words.jp/w/syslog.html> (see Non-Patent Document 1)).

“IT Glossary e-Words”, [online], [Search January 25, 2011], Internet <URL: http://e-words.jp/w/syslog.html>

  When the monitor data indicating the monitoring result of the data communication in the target device is stored in the target device, a large-capacity memory is required, and means for taking out the monitor data from the memory and confirming it is required. Become.

  As another method, a method of transferring monitor data to an external apparatus using a syslog or the like can be considered. However, in order to use the syslog, it is necessary to make a setting for the syslog communication such as the communication procedure of the syslog to the target device and which external device to transfer. Syslog is premised on client / server communication, and it is necessary to arrange a communication procedure such as TCP / IP between the target device and an external device.

  For example, in order to monitor data communication between a CPU (Central Processing Unit) in the apparatus and a target device, a bus signal passing on the board on which the CPU and the target device are mounted is taken out and monitored by a measuring instrument or the like. There is a need to. Even when data communication with the outside of the apparatus is monitored, when data communication via a dedicated medium is monitored, an apparatus for monitoring the data of the medium is necessary.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a communication device, a communication monitoring method, and a communication monitoring program capable of monitoring in detail communication of a target device with a simple configuration. It is to be.

  In order to solve the above-described problem, a communication apparatus according to an aspect of the present invention is a communication apparatus, and includes an arithmetic processing unit and one or a plurality of target devices connected to the arithmetic processing unit via an internal bus. An input / output unit for transmitting / receiving data to / from other communication devices via a network, and the arithmetic processing unit transfers data transferred on the internal bus or the internal bus to the internal bus The monitor data is generated by copying the data to be transmitted, and the monitor data is transmitted to the network via the input / output unit.

  As described above, the configuration in which the data on the internal bus is copied and transferred to another device eliminates the need for implementation of communication procedure functions and various settings in the communication device, and facilitates data communication between devices in the communication device. Can be monitored in detail by configuration.

  Preferably, the communication apparatus further includes a storage unit for storing identifiers respectively corresponding to at least any two of the arithmetic processing unit and the one or more target devices, and the arithmetic processing unit includes: The monitor data is transmitted by adding a header including the identifier or information corresponding to the identifier as transmission source information and transmission destination information.

  With such a configuration, the monitor data can be received by another device that handles a data format different from the data format in the communication device. In addition, the contents of data communication including the direction of data can be monitored.

  More preferably, the communication apparatus includes a plurality of target devices, and the arithmetic processing unit corresponds to the data obtained by copying one of the transmission source information and the transmission destination information as a self identifier and copying the other in the header. This is the identifier of the target device.

  With such a configuration, even when the communication apparatus includes a plurality of target devices, data transmitted or received by each target device can be easily identified by storing and using the identifier of each device.

  More preferably, the input / output unit transmits / receives an Ethernet (registered trademark) frame to / from the other device via the network, and the arithmetic processing unit includes a source MAC (Media Access Control) in the header. An address field, a destination MAC address field, and a frame type field are included.

  With such a configuration, the monitor data can be received by the device connected to the LAN, so that the versatility of the monitoring environment for data communication can be improved.

  More preferably, the arithmetic processing unit inserts its own identifier into one of the transmission source MAC address field and the transmission destination MAC address field, and inserts the identifier of the target device into the other.

  With such a configuration, the contents of data communication including the direction of data can be monitored in a general-purpose environment.

  More preferably, the communication apparatus includes a plurality of target devices, and the arithmetic processing unit stores its own identifier and a plurality of target device identifiers, and in the header, the source MAC address field and the destination The self identifier is inserted into one of the MAC address fields, and the identifier of the target device corresponding to the copied data is inserted into the other.

  With such a configuration, even when the communication apparatus includes a plurality of target devices, the data transmitted or received by each target device can be easily identified in a general-purpose environment by using the MAC address.

  Preferably, the arithmetic processing unit transmits the monitor data corresponding to the data to the network according to an order in which the data is transmitted to or received from the target device.

  With such a configuration, time-series information about data transmission and reception in the communication device can be obtained without including time information such as a time stamp in the monitor data in the communication device.

  Preferably, the arithmetic processing unit generates and transmits the monitor data in response to a transmission operation of the data to the target device or a reception operation of the data from the target device.

  As described above, the configuration for generating and transmitting the monitor data in response to the generation of the data to be monitored can reduce the memory capacity for storing the data for monitoring data transmission in the communication device. In addition, time series information about data transmission and reception in the communication apparatus can be obtained without including time information such as a time stamp in the monitor data in the communication apparatus.

  Preferably, the target device transmits a part or all of the data received from the arithmetic processing unit to another communication device or writes it to a recording medium, and from the data or recording medium received from another communication device. A part or all of the read data is transmitted to the arithmetic processing unit.

  With such a configuration for monitoring the communication of the target device, it is possible to easily monitor the data communication between the target device that is difficult to monitor directly and another communication apparatus or recording medium.

  Preferably, the input / output unit converts the monitor data received from the arithmetic processing unit into a format receivable by a device for analyzing the monitor data connected to the network and transmits the converted data to the network. .

  With such a configuration, the monitor data can be received by the device for analyzing the monitor data.

  In order to solve the above problems, a communication monitoring method according to an aspect of the present invention includes an arithmetic processing unit, one or more target devices connected to the arithmetic processing unit via an internal bus, and a network. A communication monitoring method in a communication device comprising an input / output unit for transmitting / receiving data to / from another communication device, the data being transferred on the internal bus or the data being transferred to the internal bus And generating monitor data, and transmitting the monitor data to the network via the input / output unit.

  As described above, the inter-device data communication in the communication apparatus can be monitored in detail with a simple configuration by copying the data between the arithmetic processing unit and the target device and transferring the data to another apparatus.

  In order to solve the above problems, a communication monitoring program according to an aspect of the present invention includes an arithmetic processing unit, one or more target devices connected to the arithmetic processing unit via an internal bus, and a network. A communication monitoring program in a communication device including an input / output unit for transmitting / receiving data to / from another communication device, wherein the data is transferred to the computer or transferred to the internal bus A program for executing a step of generating monitor data by copying data to be transferred and a step of transmitting the monitor data to the network via the input / output unit.

  As described above, the inter-device data communication in the communication apparatus can be monitored in detail with a simple configuration by copying the data between the arithmetic processing unit and the target device and transferring the data to another apparatus.

  According to the present invention, communication of a target device can be monitored in detail with a simple configuration.

It is a figure which shows the structure of the communication apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the ID table in the communication apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows an example of the monitor data in the communication apparatus which concerns on the 1st Embodiment of this invention. It is the flowchart which defined the operation | movement procedure at the time of the communication apparatus which concerns on the 1st Embodiment of this invention performing the monitoring process of data. It is the flowchart which defined the other example of the operation | movement procedure at the time of the communication apparatus which concerns on the 1st Embodiment of this invention performing the data monitoring process. It is a figure which shows the structure of the communication apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of the ID table in the communication apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of the monitor data in the communication apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows an example of the analysis result of the monitor data transmitted from the communication apparatus which concerns on the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<First Embodiment>
[Configuration and basic operation]

  FIG. 1 is a diagram showing a configuration of a communication apparatus according to the first embodiment of the present invention.

  Referring to FIG. 1, the communication apparatus 101 includes a CPU (Central Processing Unit) (arithmetic processing unit) 11, an Ethernet controller (input / output unit) 12, and a target device 13. The target device 13 may be a DSP (Digital Signal Processor), an arithmetic means other than the CPU 11, or a device such as a memory and various input / output interfaces.

  The terminal device 51 is a personal computer, for example. The communication device 101 and the terminal device 51 are connected via a LAN (Local Area Network) 31.

  In the communication apparatus 101, the CPU 11 transfers data to and from the target device 13 via, for example, an internal bus.

  The Ethernet controller 12 transmits / receives data to / from devices other than the communication device 101, for example, the terminal device 51. More specifically, the Ethernet controller 12 transmits and receives an Ethernet (registered trademark) frame to and from the terminal device 51 via the LAN 31.

  The CPU 11 generates monitor data by copying data to be transmitted to or transmitted to the target device 13 or data received from the target device 13. Then, the CPU 11 transmits the generated monitor data to the LAN 31 via the Ethernet controller 12.

  For example, the CPU 11 transmits monitor data corresponding to each data to the LAN 31 according to the order in which each data is transmitted to or received from the target device 13.

  More specifically, the CPU 11 generates and transmits monitor data in response to a data transmission operation to the target device 13 or a data reception operation from the target device 13.

  Further, for example, the CPU 11 generates, as monitor data, data obtained by adding a header for enabling the terminal device 51 to receive the copied data.

  Further, for example, the CPU 11 stores its own identifier and the identifier of the target device 13, includes the transmission source information and the transmission destination information in the header, sets one of the transmission source information and the transmission destination information as its own identifier, and sets the other as the target. The identifier of the device 13 is used.

  The CPU 11 can include a transmission source MAC (Media Access Control) address field, a transmission destination MAC address field, and a frame type field in the header of the transmission frame of the monitor data.

  For example, the CPU 11 stores its own identifier and the identifier of the target device 13, inserts its own identifier into one of the source MAC address field and the destination MAC address field, and inserts the identifier of the target device 13 into the other. Note that the CPU 11 may be configured to read a MAC address corresponding to each identifier from a storage unit such as a memory.

  The terminal device 51 monitors the Ethernet frame that flows through the LAN 31. More specifically, the terminal device 51 analyzes the Ethernet frame received from the LAN 31 and displays the analysis result. The user can check the operation of the communication apparatus 101 and perform failure analysis using the analysis result.

  FIG. 2 is a diagram illustrating an example of an ID table in the communication apparatus according to the first embodiment of the present invention.

  With reference to FIG. 2, the CPU 11 stores an ID table indicating the correspondence between each device and the identification number in the communication apparatus 101.

  Specifically, in this ID table, the identification number of the target device 13 is 1, and the identification number of the CPU 11 is 2. This ID table can be stored in a storage unit included in the communication apparatus 101. The CPU 11 can acquire the identification number by referring to the ID table of the storage unit.

  FIG. 3 is a diagram showing an example of monitor data in the communication apparatus according to the first embodiment of the present invention.

  With reference to FIG. 3, the CPU 11 includes a transmission destination MAC address field (MAC-DA), a transmission source MAC address field (MAC-SA), and a frame in data transmitted or received between the CPU 11 and the target device 13. An Ethernet frame to which a header including a type field (Type) is added is generated as monitor data.

  Specifically, the CPU 11 adds a header to the data “1123231212323” transmitted from the CPU 11 to the target device 13. In this header, “0x020000000001” corresponding to the identification number of the target device 13 is inserted into the transmission destination MAC address field, “0x020000000002” corresponding to the identification number of the CPU 11 is inserted into the transmission source MAC address field, and the frame type field. For example, “0x8888” is inserted.

  Further, the CPU 11 adds a header to the data “5656112233” transmitted from the target device 13 to the CPU 11. In this header, “0x020000000002” corresponding to the identification number of the CPU 11 is inserted into the transmission destination MAC address field, “0x020000000001” corresponding to the identification number of the target device 13 is inserted into the transmission source MAC address field, and the frame type field. For example, “0x8888” is inserted.

  The CPU 11 may be configured to further include time information such as a time stamp indicating when data is transmitted or received in the header.

  The Ethernet controller 12 converts the monitor data received from the CPU 11 into a format receivable by the terminal device 51 for analyzing the monitor data connected to the LAN 31 and transmits the converted data to the LAN 31. Specifically, the Ethernet controller 12 converts the monitor data received from the CPU 11 into an Ethernet frame format and transmits it to the LAN 31.

[Operation]
Next, an operation when the communication apparatus according to the first embodiment of the present invention performs data monitoring will be described.

  The communication apparatus 101 reads and executes each step of each flowchart shown below from a memory (not shown). This program can be installed externally. The installed program is distributed in a state stored in a recording medium, for example.

  FIG. 4 is a flowchart defining an operation procedure when the communication apparatus according to the first embodiment of the present invention performs a data monitoring process.

  Referring to FIG. 4, first, CPU 11 waits until transmission of data to target device 13 is scheduled (NO in step S1).

  In response to the data transmission operation to the target device 13, the CPU 11 generates and transmits monitor data. That is, when the transmission of data to the target device 13 is scheduled (YES in step S1), the CPU 11 copies the data to be transmitted when the monitor function is set to ON (YES in step S2). Then, a header is added and monitor data is generated (step S3).

  Next, the CPU 11 outputs the generated monitor data to the Ethernet controller 12. The Ethernet controller 12 transmits the monitor data received from the CPU 11 to the LAN 31 (step S4).

  Next, the CPU 11 transmits data to be transmitted to the target device 13 (step S5).

  On the other hand, when transmission of data to the target device 13 is scheduled (YES in step S1), the CPU 11 generates and transmits monitor data when the monitor function is set to OFF (NO in step S2). Instead, the data to be transmitted is transmitted to the target device 13 (step S5).

  Note that the execution order of step S4 and step S5 when the monitor function is set to ON may be reversed. That is, the CPU 11 may be configured to transmit the monitor data to the LAN 31 after transmitting the data to the target device 13. Moreover, step S4 and step S5 may be performed in parallel.

  FIG. 5 is a flowchart that defines another example of an operation procedure when the communication apparatus according to the first embodiment of the present invention performs a data monitoring process.

  Referring to FIG. 5, first, CPU 11 stands by until reception of data from target device 13 is completed (NO in step S11).

  In response to the data reception operation from the target device 13, the CPU 11 generates and transmits monitor data. That is, when the reception of data from the target device 13 is completed (YES in step S11), the CPU 11 copies the received data to the header if the monitor function is set to ON (YES in step S12). Is added to generate monitor data (step S13).

  Next, the CPU 11 outputs the generated monitor data to the Ethernet controller 12. The Ethernet controller 12 transmits the monitor data received from the CPU 11 to the LAN 31 (step S14).

  Next, the CPU 11 performs various processes on the received data (step S15).

  On the other hand, when reception of data from the target device 13 is completed (YES in step S11), the CPU 11 generates and transmits monitor data when the monitor function is set to OFF (NO in step S12). First, various processes are performed on the received data (step S15).

  Note that the execution order of step S14 and step S15 when the monitor function is set to ON may be reversed. That is, the CPU 11 may be configured to transmit the monitor data to the LAN 31 after performing various processes on the received data. Moreover, step S14 and step S15 may be performed in parallel.

  By the way, when the monitor data indicating the monitoring result of the data communication in the target device is stored in the target device, a large-capacity memory is required, and means for taking out and confirming the monitor data from the memory is provided. Necessary.

  As another method, a method of transferring monitor data to an external apparatus using a syslog or the like can be considered. However, in order to use the syslog, it is necessary to make a setting for the syslog communication such as the communication procedure of the syslog to the target device and which external device to transfer. Syslog is premised on client / server communication, and it is necessary to arrange a communication procedure such as TCP / IP between the target device and an external device.

  Further, for example, in order to monitor data communication between the CPU in the apparatus and the target device, it is necessary to take out a bus signal passing through the board on which the CPU and the target device are mounted and monitor it with a measuring instrument or the like. Even when data communication with the outside of the apparatus is monitored, when data communication via a dedicated medium is monitored, an apparatus for monitoring the data of the medium is necessary.

  On the other hand, in the communication apparatus according to the first embodiment of the present invention, the CPU 11 transmits and receives data to and from the target device 13. The Ethernet controller 12 transmits / receives data to / from devices other than the communication device 101, for example, the terminal device 51 via the LAN 31. Then, the CPU 11 generates monitor data by copying data to be transmitted to or transmitted to the target device 13 or data received from the target device 13, and transmits the generated monitor data to the LAN 31 via the Ethernet controller 12.

  As described above, the configuration in which data between the CPU 11 and the target device 13 is copied and transferred to the LAN 31 eliminates the need for implementation of communication procedure functions and various settings in the communication apparatus 101, for example, and data communication between devices in the communication apparatus 101. Can be monitored in detail with a simple configuration.

  Further, in the communication device according to the first embodiment of the present invention, the CPU 11 generates, as monitor data, data obtained by adding a header for enabling reception at the terminal device 51 to the copied data.

  With such a configuration, monitor data can be received by another device that handles a data format different from the data format in the communication device 101.

  In the communication apparatus according to the first embodiment of the present invention, the CPU 11 stores its own identifier and the identifier of the target device 13, includes the transmission source information and the transmission destination information in the header, and transmits the transmission source information and the transmission information. One of the previous information is set as an identifier of the self, and the other is set as an identifier of the target device 13.

  With such a configuration, the contents of data communication including the direction of data can be monitored.

  In the communication device according to the first embodiment of the present invention, the Ethernet controller 12 transmits and receives an Ethernet frame to and from the terminal device 51 via the LAN 31. Then, the CPU 11 includes a transmission source MAC address field, a transmission destination MAC address field, and a frame type field in the header.

  With such a configuration, the monitor data can be received by the device connected to the LAN, so that the versatility of the monitoring environment for data communication can be improved.

  Further, in the communication apparatus according to the first embodiment of the present invention, the CPU 11 stores its own identifier and the identifier of the target device 13, and has its own identifier in one of the source MAC address field and the destination MAC address field. And the identifier of the target device 13 is inserted into the other.

  With such a configuration, the contents of data communication including the direction of data can be monitored in a general-purpose environment.

  In the communication apparatus according to the first embodiment of the present invention, the CPU 11 transmits monitor data corresponding to each data to the LAN 31 according to the order in which each data is transmitted to or received from the target device 13.

  With such a configuration, time series information about data transmission and reception in the communication apparatus 101 can be obtained without including time information such as a time stamp in the monitor data in the communication apparatus 101.

  In the communication apparatus according to the first embodiment of the present invention, the CPU 11 generates and transmits monitor data in response to a data transmission operation to the target device 13 or a data reception operation from the target device 13. I do.

  Thus, the configuration for generating and transmitting monitor data in response to the generation of data to be monitored can reduce the memory capacity for storing data for monitor data transmission in the communication apparatus 101. Further, time series information about data transmission and reception in the communication apparatus 101 can be obtained without including time information such as a time stamp in the monitor data in the communication apparatus 101.

  In the communication apparatus according to the first embodiment of the present invention, the Ethernet controller 12 receives the monitor data received from the CPU 11 in a format that can be received by the terminal apparatus 51 for analyzing the monitor data connected to the LAN 31. Is converted and transmitted to the LAN 31.

  With such a configuration, it is possible to receive monitor data in an apparatus for analyzing monitor data that handles different data formats.

  In the communication apparatus according to the first embodiment of the present invention, both the data from the CPU 11 to the target device 13 and the data from the target device 13 to the CPU 11 are monitored. However, the present invention is limited to this. It is not a thing. It may be configured to monitor one of these data. That is, the CPU 11 performs at least one of an operation to copy monitor data to be transmitted to the target device 13 and generate monitor data, and an operation to copy monitor data received from the target device 13 and generate monitor data. Any configuration may be used.

  Moreover, although the communication apparatus according to the first embodiment of the present invention is configured to include the Ethernet controller 12 that transmits and receives Ethernet frames, the present invention is not limited to this. The configuration is not limited to transmitting and receiving Ethernet frames, and may be configured to transmit and receive other types of data with devices other than the communication device 101.

  In the communication apparatus according to the first embodiment of the present invention, the CPU 11 is configured to generate monitor data by copying data transmitted and received between itself and the target device 13. It is not limited to. The configuration may be such that monitor data is generated by copying data transmitted and received between a plurality of target devices in the communication apparatus 101. More specifically, the transfer data transferred between the target device A and the target device B connected by the internal bus is copied and acquired by the CPU 11 connected to the same internal bus, and transmitted as monitor data.

  In this case, the communication apparatus 101 includes a CPU 11 and one or more target devices connected to the CPU 11 via an internal bus. The CPU 11 then copies the data transferred on the internal bus or the data transferred by itself to the internal bus to generate monitor data, and transmits the monitor data to the LAN 31 via the input / output unit.

  With such a configuration, for example, the implementation of communication procedure functions and various settings in the communication apparatus 101 are not required, and data communication between devices in the communication apparatus 101 can be monitored in detail with a simple configuration.

  In this case, the storage unit in the communication apparatus 101 stores identifiers corresponding to the CPU 11 and at least any two of the one or more target devices. Then, the CPU 11 transmits monitor data by adding a header including the identifier or information corresponding to the identifier as transmission source information and transmission destination information.

  With such a configuration, monitor data can be received by another device that handles a data format different from the data format in the communication device 101. In addition, the contents of data communication including the direction of data can be monitored.

  Next, another embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

<Second Embodiment>
The present embodiment relates to a communication apparatus that monitors communication of a plurality of target devices as compared to the communication apparatus according to the first embodiment. The contents other than those described below are the same as those of the communication apparatus according to the first embodiment.

  FIG. 6 is a diagram showing a configuration of a communication apparatus according to the second embodiment of the present invention.

  Referring to FIG. 6, communication device 102 includes a plurality of target devices as compared to the communication device according to the first embodiment of the present invention. For example, the communication apparatus 102 includes a Bluetooth (registered trademark) device 21, an xDSL (Digital Subscriber Line) device 22, a USB (Universal Serial Bus) device 23, and an ONU (Optical Network Unit) device 24.

  These target devices transmit a part or all of the data received from the CPU 11 to a communication device other than the communication device 102 or write it to a recording medium, and also receive data or a recording medium received from a communication device other than the communication device 102 A part or all of the data read from is transmitted to the CPU 11.

  Specifically, the Bluetooth device 21 transmits / receives data to / from other communication devices by wireless communication. The xDSL device 22 and the ONU device 24 transmit / receive data to / from other communication devices by wired communication. The USB device 23 reads and writes data from and to a USB memory inserted into the communication device 102.

  The CPU 11 stores its own identifier and the identifiers of the target devices 21 to 24. In the header added to the copied data, one of the transmission source information and the transmission destination information is used as its own identifier, and the other corresponds to the copied data. The identifier of the target device to be used.

  Specifically, the CPU 11 stores its own identifier and the identifiers of the target devices 21 to 24, inserts its own identifier into one of the source MAC address field and the destination MAC address field in the header, and copies it to the other The identifier of the target device corresponding to the processed data is inserted.

  FIG. 7 is a diagram illustrating an example of an ID table in the communication apparatus according to the second embodiment of the present invention.

  Referring to FIG. 7, CPU 11 stores an ID table indicating the correspondence between each device and identification number in communication apparatus 102.

  Specifically, in this ID table, the identification number of the Bluetooth device 21 is 1, the identification number of the xDSL device 22 is 2, the identification number of the USB device 23 is 3, and the identification number of the ONU device 24 is 4 and the identification number of the CPU 11 is 5.

  FIG. 8 is a diagram showing an example of monitor data in the communication apparatus according to the second embodiment of the present invention. Here, data that the CPU 11 transmits to and receives from the xDSL device 22 will be described as a representative example. The format of data transmitted and received by the CPU 11 between the Bluetooth device 21 and the ONU device 24 is the same as that of the xDSL device 22. The data format that the CPU 11 transmits to and receives from the USB device 23 is data that does not include an IP header, for example, as shown in FIG.

  Referring to FIG. 8, CPU 11 adds a destination MAC address field (MAC-DA) and a source MAC address field (MAC-) to an IP packet that is data transmitted or received between CPU 11 and each target device. An Ethernet frame to which a header including SA) and a frame type field (Type) is added is generated as monitor data.

  Specifically, the CPU 11 adds a header to the IP packet including the information “11232312323” transmitted from the CPU 11 to the xDSL device 22. In this IP packet, the destination IP address is “192.168.1.2”, and the source IP address is “192.168.1.1”. In the header added to the IP packet, “0x020000000002” corresponding to the identification number of the xDSL device 22 is inserted into the transmission destination MAC address field, and “0x020000000005” corresponding to the identification number of the CPU 11 is inserted into the transmission source MAC address field. Is inserted, and “0x0800” indicating an IP packet is inserted in the frame type field.

  In addition, the CPU 11 adds a header to the IP packet including the information “565656112233” transmitted from the xDSL device 22 to the CPU 11. In this IP packet, the destination IP address is “192.168.1.1” and the source IP address is “192.168.1.2”. In the added header, “0x020000000005” corresponding to the identification number of the CPU 11 is inserted into the transmission destination MAC address field, and “0x020000000002” corresponding to the identification number of the xDSL device 22 is inserted into the transmission source MAC address field. “0x0800” indicating an IP packet is inserted into the frame type field.

  The CPU 11 inserts “0x020000000001”, “0x020000000003”, and “0x020000000004” corresponding to the respective identification numbers in the MAC address fields of the headers corresponding to the Bluetooth device 21, the USB device 23, and the ONU device 24.

  FIG. 9 is a diagram illustrating an example of the analysis result of the monitor data transmitted from the communication device according to the second embodiment of the present invention.

  Referring to FIG. 9, terminal device 51 displays windows W <b> 1 to W <b> 3 on the screen as an analysis result of the Ethernet frame received from LAN 31.

  In the window W1, the Ethernet frame number, arrival time, transmission source IP address, transmission destination IP address, data length, protocol, and other information are displayed in a list format.

  In the window W2, information that summarizes the information of the Ethernet frame selected in the window W1 in an easy-to-understand manner is displayed.

  In the window W3, the contents of the Ethernet frame selected in the window W1 are displayed in hexadecimal.

  As described above, in the communication device according to the second embodiment of the present invention, the CPU 11 stores its own identifier and the identifiers of the target devices 21 to 24, and in the header added to the copied data, One of the information and the destination information is set as its own identifier, and the other is set as the identifier of the target device corresponding to the copied data.

  With such a configuration, even when the communication apparatus includes a plurality of target devices, data transmitted or received by each target device can be easily identified by storing and using the identifier of each device.

  In the communication apparatus according to the second embodiment of the present invention, the CPU 11 stores its own identifier and the identifiers of the target devices 21 to 24, and in the header, the source MAC address field and the destination MAC address field. The self identifier is inserted on one side, and the identifier of the target device corresponding to the copied data is inserted on the other side.

  With such a configuration, even when the communication apparatus includes a plurality of target devices, the data transmitted or received by each target device can be easily identified in a general-purpose environment by using the MAC address.

  In the communication apparatus according to the second embodiment of the present invention, the target devices 21 to 24 transmit part or all of the data received from the CPU 11 to another communication apparatus or write it to a recording medium. Part or all of the data received from the communication device or the data read from the recording medium is transmitted to the CPU 11.

  With such a configuration for monitoring the communication of the target device, it is possible to easily monitor the data communication between the target device that is difficult to monitor directly and another communication apparatus or recording medium.

  Note that the communication apparatus 102 is not limited to a configuration using a MAC address, and may be configured to identify data transmitted or received by each target device by combining a MAC address and an IP address.

  Since other configurations and operations are the same as those of the communication apparatus according to the first embodiment, detailed description thereof will not be repeated here.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

11 CPU (arithmetic processing unit)
12 Ethernet controller (input / output unit)
13 Target device 21 Bluetooth device 22 xDSL device 23 USB device 24 ONU device 51 Terminal device 101, 102 Communication device

Claims (12)

A communication device,
An arithmetic processing unit;
One or more target devices connected to the arithmetic processing unit via an internal bus;
The internal bus is not connected, and includes an input / output unit for transmitting and receiving data to and from other communication devices via a network,
The arithmetic processing unit generates monitor data by copying data transferred on the internal bus or data transferred to the internal bus, and transmits the monitor data to the network via the input / output unit. And
A communication device capable of setting on / off of generation and transmission of the monitor data by the arithmetic processing unit . The communication device further includes:
A storage unit for storing identifiers respectively corresponding to at least any two of the arithmetic processing unit and the one or more target devices;
The communication apparatus according to claim 1, wherein the arithmetic processing unit transmits the monitor data with a header including the identifier or information corresponding to the identifier as transmission source information and transmission destination information. The communication device
Multiple target devices,
The calculation processing unit according to claim 2, wherein in the header, one of the transmission source information and the transmission destination information is set as an identifier of the self, and the other is set as an identifier of the target device corresponding to the copied data. Communication device. The input / output unit transmits / receives an Ethernet (registered trademark) frame to / from the other device via the network,
The arithmetic processing unit includes a source MAC (Media Access) in the header.
4. The communication apparatus according to claim 2, further comprising a control address field, a destination MAC address field, and a frame type field.   The communication apparatus according to claim 4, wherein the arithmetic processing unit inserts its own identifier into one of the transmission source MAC address field and the transmission destination MAC address field, and inserts the identifier of the target device into the other. The communication device
Multiple target devices,
The arithmetic processing unit stores its own identifier and identifiers of the plurality of target devices, and inserts its own identifier into one of the source MAC address field and the destination MAC address field in the header, The communication apparatus according to claim 5, wherein an identifier of the target device corresponding to the copied data is inserted.   The said arithmetic processing part transmits the said monitor data corresponding to each said data to the said network according to the order which each said data was transmitted or received between the said target devices, The any one of Claim 1-6 Item 1. The communication device according to item 1.   The calculation processing unit generates and transmits the monitor data in response to a transmission operation of the data to the target device or a reception operation of the data from the target device. The communication apparatus of any one of Claims. The target device transmits a part or all of the data received from the arithmetic processing unit via the internal bus to another communication device or writes it to a recording medium, and receives the data received from the other communication device or Sending part or all of the data read from the recording medium to the arithmetic processing unit via the internal bus ,
The said arithmetic processing part copies the data transmitted to the said target device, produces | generates the said monitor data, or copies the data received from the said target device, and produces | generates the said monitor data. 9. The communication device according to any one of 8.   The input / output unit converts the monitor data received from the arithmetic processing unit into a format receivable by a device for analyzing the monitor data connected to the network, and transmits the converted data to the network. The communication apparatus according to any one of claims 1 to 9. Data is transmitted / received between the arithmetic processing unit, one or more target devices connected to the arithmetic processing unit via an internal bus, and other communication devices that are not connected to the internal bus. A communication monitoring method in a communication device comprising an input / output unit for performing,
Check the ON / OFF setting of the monitoring function of the communication device, and copy the data transferred on the internal bus or the data transferred to the internal bus when the monitoring function is set to ON. Generating monitor data by
Transmitting the monitor data to the network via the input / output unit. Data is transmitted / received between the arithmetic processing unit, one or more target devices connected to the arithmetic processing unit via an internal bus, and other communication devices that are not connected to the internal bus. A communication monitoring program in a communication device including an input / output unit for performing on a computer,
Check the ON / OFF setting of the monitoring function of the communication device, and copy the data transferred on the internal bus or the data transferred to the internal bus when the monitoring function is set to ON. Generating monitor data by
A communication monitoring program for executing the step of transmitting the monitor data to the network via the input / output unit.

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