JP2012156853A - Communication network test data generation device and communication network test data generation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve work efficiency by facilitating a communication network test.SOLUTION: A communication network test data generation device: monitors an IP packet transmitted for diagnosis to a diagnosis target IP apparatus from another IP apparatus, and an IP packet returned as a reply from the diagnosis target IP apparatus; extracts an IP packet which is a target of a communication network test from the plurality of monitored IP packets; extracts a data region changing depending on communication network environment from the extracted IP packet, and marks it; generates test data used in the communication network test by using the extracted IP packet and the marked changeable data region; and outputs the generated test data to a storage means to make the storage means store it.

Description

  The present invention relates to a technique for generating test data used when diagnosing an IP device connected to a TCP / IP communication network.

  In general, when diagnosing whether the operation of an IP device (network device) such as a router is normal or abnormal, whether there is an error in setting, etc., the IP device to be diagnosed is connected to a communication network and another IP It is possible to diagnose whether or not the IP device is normal by transmitting a specific IP packet from the device and monitoring the response IP packet from the IP device to be diagnosed.

  It is also possible to remotely monitor whether an IP device is operating normally by using an IP device monitoring protocol such as SNMP (Simple Network Management Protocol).

  Furthermore, by confirming communication of the communication network using a protocol such as ICMP (Internet Control Message Protocol) to an IP device such as a server or PC remote from the IP device to be diagnosed, It is also possible to indirectly confirm whether the operation of a certain IP device is normal.

  On the other hand, there is a method using a traffic generator as another means for diagnosing an IP device. For example, a traffic generation system including a plurality of packet transmission / reception devices and a traffic control device is connected to both sides of a communication network sandwiching an IP device to be diagnosed, and a predetermined packet is transmitted from a packet transmission / reception device. Transmit to another packet transmitting / receiving device. The packet transmitting / receiving apparatus that has received the packet confirms the communication speed of the communication network from the received packet (see Patent Document 1). As a result, it is possible to check whether the operation of the IP device to be diagnosed is normal.

JP 2008-48096 A

  If the IP device to be diagnosed is compatible with a network monitoring protocol such as SNMP, monitoring may be performed using those protocols. However, in the case of an inexpensive IP device such as a home router, diagnosis using a network monitoring protocol may not be possible because it does not support SNMP.

  In addition, when the IP device to be diagnosed is connected to a small communication network such as a LAN (Local Area Network), diagnosis can be performed by connecting a traffic generator to both sides of the IP device. However, in the case of a large-scale communication network such as the Internet, it is difficult to connect a traffic generation device, which may not be realistic.

  Furthermore, in the case of a method of confirming communication of a communication network using a protocol such as ICMP for a remote server or PC, it can be confirmed that the IP device is not operating due to power interruption or hang-up. However, in order to check whether various functions for connecting an IP device to a communication network such as a DNS (Domain Name Sysmte) relay are correctly set and operating, a DNS protocol test is also required. Since various necessary protocols need to be tested, the protocol transmission method becomes complicated.

  In order to solve such a problem, a method of generating a series of IP packet groups including various protocols for a test and transmitting the IP packet groups to a network device is also conceivable. For example, by sequentially transmitting ICMP, DNS, and HTTP protocols to the HTTP server, it is possible to confirm whether the router can normally process the HTTP access.

  However, in order to generate and transmit such a protocol using an IP device such as a PC, various knowledge about the communication network and the PC is required, and it is difficult to implement unless the user is skilled in the work. There is also a problem that the operation takes time.

  For example, an HTTP test can be performed by accessing a specific Web server using a Web browser. However, when the cache when the Web server is accessed last time remains in the Web browser, the HTTP protocol does not occur. For this reason, it is necessary to access the Web server after explicitly clearing the cache of the Web browser, but it takes time to perform an operation for clearing the cache and knowledge that such work is necessary in advance. It is necessary to learn.

  The present invention has been made in view of the above, and an object of the present invention is to facilitate diagnosis (communication network test) of an IP device connected to a communication network and improve work efficiency.

  The communication network test data generation device according to claim 1, wherein an IP packet transmitted for diagnosis from another IP device to an IP device to be diagnosed, and an IP packet returned as a response from the IP device to be diagnosed Monitoring means for extracting the data, extraction means for extracting an IP packet targeted by the communication network test from a plurality of monitored IP packets, and extracting a data area that varies depending on the communication network environment from the extracted IP packet And generating means for generating test data to be used at the time of testing the communication network, using the extracted IP packet and the marked changeable data area, and storing the generated test data Output means for outputting to the means for storage.

  According to the present invention, an IP packet transmitted from another IP device for diagnosis to an IP device to be diagnosed and an IP packet returned as a response from the IP device to be diagnosed are monitored and monitored. IP packets targeted for communication network testing were extracted from a plurality of IP packets, and a data area that varies depending on the communication network environment was extracted and marked from the extracted IP packets, and was marked as an extracted IP packet The test data used at the time of the communication network test is generated using the data area that can be changed, and the generated test data is output and stored in the storage means, so that complicated knowledge is not used in a short time. Test data can be easily generated and work efficiency required for a communication network test can be improved.

  In addition, according to the present invention, a data area that varies depending on the communication network environment is extracted from the extracted IP packet and marked, and a test that is used during a communication network test using the marked changeable data area. Compared to manual editing of all data areas included in test data during communication network testing to generate data, only the marked data area can be changed. Can be reduced.

  The communication network test data generation device according to claim 2 is a display means for displaying a selection candidate as a diagnostic rule at the time of the communication network test in the communication network test data generation device according to claim 1. And selecting means for selecting an arbitrary diagnosis rule from the displayed plurality of diagnosis rules.

  The communication network test data generation device according to claim 3 is the communication network test data generation device according to claim 1 or 2, wherein the extraction means selects and displays protocol information included in each of a plurality of monitored IP packets. And a selection means for selecting the protocol information targeted in the communication network test from the displayed plurality of protocol information, and extracting an IP packet having the selected protocol information And

  The communication network test data generation device according to claim 4 is the communication network test data generation device according to claim 3, wherein the changeable data areas are a source IP address and a destination IP address that can be arbitrarily set. The generation means includes the test data for transmission including at least the protocol data included in the IP packet at the time of transmission, the type of the protocol, the source IP address, and the destination IP address; The test data having the protocol data included in the IP packet, the type of the protocol, the test data for reception including at least the source IP address and the destination IP address are generated.

  The communication network test data generation method according to claim 5 is the communication network test data generation method performed by a computer, wherein the IP packet transmitted for diagnosis from another IP device to the diagnosis target IP device, and the diagnosis target A monitoring step of monitoring an IP packet returned as a response from the IP device, an extracting step of extracting an IP packet targeted in a communication network test from the plurality of monitored IP packets, and an extracted IP packet Test data used in the communication network test is generated using a marking step for extracting and marking a data area that varies depending on a communication network environment, and the extracted IP packet and the marked changeable data area. Generation steps and generated trials An output step of and store output in a storage unit data, to have a characterized.

  According to the present invention, an IP packet transmitted from another IP device for diagnosis to an IP device to be diagnosed and an IP packet returned as a response from the IP device to be diagnosed are monitored and monitored. IP packets targeted for communication network testing were extracted from a plurality of IP packets, and a data area that varies depending on the communication network environment was extracted and marked from the extracted IP packets, and was marked as an extracted IP packet The test data used at the time of the communication network test is generated using the data area that can be changed, and the generated test data is output and stored in the storage means, so that complicated knowledge is not used in a short time. Test data can be easily generated and work efficiency required for a communication network test can be improved.

  In addition, according to the present invention, a data area that varies depending on the communication network environment is extracted from the extracted IP packet and marked, and a test that is used during a communication network test using the marked changeable data area. Compared to manual editing of all data areas included in test data during communication network testing to generate data, only the marked data area can be changed. Can be reduced.

  The communication network test data generation method according to claim 6 is the communication network test data generation method according to claim 5, wherein the plurality of generated test data are displayed as selection candidates as diagnostic rules for the communication network test. And a selection step of selecting an arbitrary diagnosis rule from the displayed plurality of diagnosis rules.

  7. The communication network test data generation method according to claim 7, wherein the extraction step selects the protocol information included in each of a plurality of monitored IP packets as a selection candidate display. And a selection step of selecting protocol information targeted in the communication network test from the displayed plurality of protocol information, and extracting an IP packet having the selected protocol information And

  The communication network test data generation method according to claim 8 is the communication network test data generation method according to claim 7, wherein the changeable data areas are a source IP address and a destination IP address that can be arbitrarily set. In the generation step, the test data for transmission including at least the protocol data included in the IP packet at the time of transmission, the type of the protocol, the source IP address and the destination IP address, and the reply at the time The test data having the protocol data included in the IP packet, the type of the protocol, the test data for reception including at least the source IP address and the destination IP address are generated.

  According to the present invention, it is possible to facilitate a communication network test and improve work efficiency.

It is a figure which shows the functional block structure of a communication network test data generation apparatus. It is a figure which shows an example of IP address information and protocol information. It is a figure which shows an example of the protocol list for diagnosis. It is a figure which shows an example of a diagnostic rule.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. However, the present invention can be implemented in many different modes and should not be construed as being limited to the description of the present embodiment.

  In order to solve the above-described problems, the present invention captures various diagnostic IP packets transmitted and received on a communication network, and uses the captured IP packets to obtain a series of IP packet groups to be used in a test in advance. The technical idea of generating is introduced.

  At the time of testing, an IP packet group generated using captured IP packets can be transmitted from a PC, a dedicated IP terminal, or the like to a communication network, and as a result, the IP device can be diagnosed from the received IP packets. .

  However, since the IP packet includes various data that needs to be changed according to the communication network environment, such as the destination and the source IP address, it is necessary to change the data according to the network environment. Also pay attention.

  First, the function of the communication network test data generation device will be described.

  FIG. 1 is a diagram showing a functional block configuration of a communication network test data generation apparatus according to the present embodiment. The communication network test data generation device 1 is connected to a communication network 2 through which a plurality of IP devices (including IP devices to be diagnosed) are communicating, and includes an IP packet monitoring unit 10, an IP packet extracting unit 20, and a diagnosis. It is comprised with the rule production | generation part 30. FIG.

  The IP packet monitoring unit 10 transmits an IP packet transmitted from another IP device for diagnosis to the IP device to be diagnosed via the communication network 2, and the other IP device as a response from the IP device to be diagnosed. It has a function of monitoring the IP packet returned to. Specifically, the IP packet receiving unit 101, the IP address extracting unit 102, the protocol identifying unit 103, the IP address information storing unit 104, and the protocol information storing unit 105 are configured.

  The IP packet extraction unit 20 has a function of extracting, from a plurality of IP packets monitored by the IP packet monitoring unit 10, an IP packet targeted for a communication network test to be performed later, based on a user designation. ing. Specifically, the test IP packet determination unit 201, the protocol selection unit 202, and the protocol list display unit 203 are configured.

  The diagnostic rule generation unit 30 has a function of generating a diagnostic rule used at the time of a communication network test using the IP packet extracted by the IP packet extraction unit 20. Specifically, it includes a variation factor marking unit 301, a test data generation unit 302, a test data output unit 303, a diagnostic rule display unit 304, and a diagnostic rule selection unit 305.

  The communication network test data generating device 1 includes a display device 3 represented by a monitor, an input device 4 represented by a mouse, a keyboard, a touch pen, etc., and a storage device 5 represented by a flash memory, a hard disk, etc. It is connected. In particular, the arrangement of the storage device 5 may be a storage medium that can be accessed via a communication network such as a LAN regardless of the inside or outside of the communication network test data generation device 1.

  Moreover, each said function part which comprises the communication network test data generation apparatus 1 is implement | achieved by processing means, such as CPU, and the processing operation of these each function part is performed by a program.

  Next, the processing operation of the communication network test data generation device will be described.

  First, the IP packet receiving unit 101 receives all IP packets transmitted through the communication network 2 (S101).

  Next, the IP address extraction unit 102 acquires the IP address included in the received IP packet, stores it in the IP address information storage unit 104, and stores the IP packet itself in the IP address information storage unit 104 (S102). .

  Next, the protocol identification unit 103 acquires an IP packet from the IP address extraction unit 102, determines which protocol the IP packet is, and in the case of a predetermined protocol such as ICMP, HTTP, DNS, etc. The protocol information is stored in the protocol information storage unit 105, and discarded for other protocols (S103).

  For example, ARP (Address Resolution Protocol) is a frequently occurring protocol, but is discarded because it is not related to the diagnosis of the IP device. Thereby, the kind of protocol information used as a selection candidate in the IP packet extraction part 20 of a back | latter stage can be suppressed.

  An example of data stored in the IP address information storage unit 104 and the protocol information storage unit 105 is shown in FIG. The IP address information storage unit 104 stores an IP address table 104a and an IP packet table 104b. The IP address table 104a includes a list of IP addresses acquired from received IP packets. The IP packet table 104b includes a source IP address, a destination IP address, a protocol type, and protocol contents in addition to the packet data expressed by the original byte string.

  A pointer is pasted from each IP address in the IP address table 104a to each IP packet in the IP packet table 104b. Thereby, an IP packet having the IP address can be searched from the IP packet table 104b from the IP address of the IP address table 104a.

  On the other hand, the protocol information storage unit 105 includes a list of protocol information acquired from the received IP packet. A pointer is attached to each IP packet in the IP packet table 104b from each protocol information. Thereby, the IP packet having the protocol information can be searched from the IP packet table 104b from the protocol information of the protocol information storage unit 105.

  That is, the IP address stored in the IP address information storage unit 104 and the protocol information stored in the protocol information storage unit 105 are an IP packet including the IP address from a specific IP address, and a protocol from the specific protocol information. Each IP packet that matches the information can be specified.

  Next, when a certain time has elapsed from the start of IP packet reception, or when the user explicitly instructs the completion of capturing of the IP packet using the input device 4, the IP packet extracting unit 20 The unit 10 is instructed to end reception of the IP packet and instruct to end storage of the IP address information and protocol information (S104).

  Next, the test IP packet determination unit 201 uses the IP address information stored in the IP address information storage unit 104 and the protocol information stored in the protocol information storage unit 105 as a diagnostic protocol to be a selection candidate. The list is aggregated and generated for each source IP address, and the protocol list display unit 203 displays the diagnostic protocol list on the display device 3 as a selection candidate (S105).

  Next, when the input device 4 is operated by the user and a protocol for generating a diagnostic rule (protocol information targeted in the communication network test) is designated from the diagnostic protocol list, the protocol selection unit 202 The designated protocol information is selected from the diagnostic protocol list (S106). From the viewpoint of the IP packet extraction unit 20, an IP packet having the protocol information selected here is extracted.

  At this time, the number of protocols to be selected is not limited to one but may be plural. For example, by selecting DNS and HTTP, it is possible to test the status of Web server access by a general Web browser.

  An example of a diagnostic protocol list displayed on the display device 3 is shown in FIG. The display device 3 displays protocol information monitored by each IP address for each transmission / reception IP address.

  For example, DNS and HTTP are displayed in a list of diagnostic protocols transmitted / received between an IP device having an IP address of 192.168.1.10 and an IP device having an IP address of 192.168.1.1. Also, SSDP (Simple Service Discovery Protocol) is displayed in the diagnostic protocol list transmitted and received between the IP device of 192.168.1.11 and the IP device of 255.255.255.0.

  Next, the variation factor marking unit 301 extracts a part (a data area that changes) that needs to be changed depending on the communication network environment from the IP packet (extracted IP packet) including the selected protocol information, Marking is performed (S107).

  For example, since the source IP address and the destination IP address vary, marking is performed with different labels. At this time, the same label is assigned to the same IP address. Depending on the protocol, the IP address information may be included in the protocol, so marking is also performed on such a location.

  Next, the test data generation unit 302 uses the extracted IP packet and the location (marked changeable data area) to which the marking label is attached, as the test data used during the communication network test. It is generated in a format that can be interpreted during the test (S108).

  Next, the test data output unit 303 outputs the generated test data to the storage device 5 for storage (S109).

  At this time, the test data stored in the storage device 5 is not limited to one but may be a plurality. For example, test data for Web server access test generated using an IP packet having DNS and HTTP selected at a certain timing, or an IP packet having only DNS selected at the next timing This is test data for a DNS test.

  Next, the diagnostic rule display unit 304 reads the test data from the storage device 5, and displays a plurality of test data generated by the test data generation unit 302 on the display device 3 as diagnostic rules at the time of the communication network test. (S110).

  Finally, when the user operates the input device 4 and a desired diagnosis rule is specified, the diagnosis rule selection unit 305 displays a plurality of the specified diagnosis rules (arbitrary diagnosis rules) being displayed. A diagnosis rule is selected (S111).

  Here, an example of a diagnostic rule (corresponding to test data) generated by the diagnostic rule generator 30 is shown in FIG.

  For each type of protocol information selected, the diagnostic rule includes the protocol contents (protocol data) included in the IP packet having the protocol at the time of protocol transmission, and the actual packet data included in the IP packet. A transmission diagnosis IP packet having a transmission source IP address and a transmission destination IP address that can be arbitrarily set according to the test environment, a transmission flag, and a protocol content included in the IP packet having the protocol when the protocol is received; The reception packet is composed of actual packet data included in the IP packet, a source IP address and a destination IP address that can be arbitrarily set according to the test environment, and a reception flag. . Serial numbers are assigned to these transmission diagnostic IP packets and reception diagnostic IP packets.

  The function and processing operation of the communication network test data generation device have been described above.

  Finally, a communication network test method performed using the generated diagnostic rule will be described. Note that the test method described below may be executed by the communication network test data generation device itself after generating the diagnostic rule, or may be executed by another IP device that has received the diagnostic rule.

  First, the source IP address and the destination IP address of each IP packet in the test data generated as a diagnostic rule are changed to the address of the IP device to be diagnosed (S201).

  Specifically, each of Addr1, Addr2, and Addr3 is replaced with an actual IP address. At this time, Addr1 designates the IP address of the IP device that transmits the IP packet, Addr2 designates the DNS server, and Addr3 designates the IP address of the HTTP server. For example, in a general home network, since the router is a DNS server, the IP address of the router is designated in Addr2.

  At this time, if the transmission source IP address and the transmission destination IP address are located at specific positions of the packet data, the IP addresses designated for Addr1, Addr2, and Addr3 are replaced.

  Next, the transmission / reception flag in the diagnostic rule is sequentially checked from the top. If it is send, the IP packet is transmitted, and if it is receive, it is confirmed whether or not the IP packet is received (S202).

  Finally, if the IP packet cannot be received, if the protocol content contains an error, or if the generated IP packet and the received IP packet do not match the protocol content, there is a problem with the IP device. Is determined to have occurred (S203).

  The above processing is repeated, and if no problem occurs until the last IP packet, it is determined that the IP device is operating normally (S204).

  When diagnosing a setting error of an IP device, a diagnostic rule is generated with an IP device that has been intentionally set in advance, and a specific setting error in the IP device is determined by testing using the diagnostic rule. It is also possible to detect.

  As described above, according to the present embodiment, an IP packet transmitted from another IP device for diagnosis to an IP device to be diagnosed and an IP packet returned as a response from the IP device to be diagnosed Monitor, extract IP packets targeted for communication network test from multiple monitored IP packets, extract and mark the points that need to be changed according to the communication network environment from the extracted IP packets Since the test data used at the time of the communication network test is generated using the IP packet and the part to which the marking label is attached, and the generated test data is output to the storage device 5 and stored, it is complicated. Test data can be easily generated in a short time without using knowledge, and work efficiency required for communication network testing is improved. It can be.

  In addition, according to the present embodiment, a portion that needs to be changed depending on the communication network environment is extracted from the extracted IP packet and marked, and the portion to which the marking label is attached is used during a communication network test. In order to generate the test data to be used, it is possible to change only the marked part compared to manually editing all the data areas included in the test data during the communication network test. Can reduce errors.

  In other words, an IP packet is composed of a large number of data strings, and in general, in order to create / modify it, a high level of work is required, for example, dedicated software is required. By marking the information that needs to be changed to indicate that it can be changed later, it is possible to easily change the information, such as inputting an appropriate IP address or the like at the time of diagnosis.

DESCRIPTION OF SYMBOLS 1 ... Communication network test data generation apparatus 10 ... IP packet monitoring part 101 ... IP packet receiving part 102 ... IP address extraction part 103 ... Protocol identification part 104 ... IP address information storage part 105 ... Protocol information storage part 20 ... IP packet extraction part DESCRIPTION OF SYMBOLS 201 ... Test IP packet determination part 202 ... Protocol selection part 203 ... Protocol list display part 30 ... Diagnosis rule generation part 301 ... Variation factor marking part 302 ... Test data generation part 303 ... Test data output part 304 ... Diagnosis rule display part 305 Diagnostic rule selection unit 2 Communication network 3 Display device 4 Input device 5 Storage device S101 to S111, S201 to S204 Processing steps

Claims (8)

Monitor means for monitoring IP packets transmitted for diagnosis from other IP devices to the diagnosis target IP device and IP packets returned as a response from the diagnosis target IP device;
Extracting means for extracting an IP packet targeted in a communication network test from a plurality of monitored IP packets;
Marking means for extracting and marking a data area that varies depending on the communication network environment from the extracted IP packet;
Generating means for generating test data to be used during the communication network test using the extracted IP packet and the marked changeable data area;
Output means for outputting and storing the generated test data in the storage means;
A communication network test data generation device comprising: Display means for displaying a plurality of generated test data as selection candidates as diagnostic rules at the time of the communication network test,
A selection means for selecting an arbitrary diagnosis rule from a plurality of displayed diagnosis rules;
The communication network test data generation device according to claim 1, further comprising: The extraction means includes
Display means for displaying candidate selections of protocol information included in each of a plurality of monitored IP packets;
Selecting means for selecting protocol information targeted in the communication network test from a plurality of displayed protocol information,
3. The communication network test data generation apparatus according to claim 1, wherein an IP packet having the selected protocol information is extracted. The changeable data area is a source IP address and a destination IP address that can be arbitrarily set,
The generating means includes
The protocol data included in the IP packet at the time of transmission, the type of the protocol, the transmission test data including at least the source IP address and the destination IP address, and included in the IP packet at the time of reply 4. The communication network test data according to claim 3, wherein the test data includes test data for reception including at least protocol data, a type of the protocol, the source IP address, and the destination IP address. Generator. In a communication network test data generation method performed by a computer,
A monitoring step of monitoring an IP packet transmitted for diagnosis from another IP device to an IP device to be diagnosed, and an IP packet returned as a response from the IP device to be diagnosed;
An extraction step of extracting an IP packet targeted in a communication network test from a plurality of monitored IP packets;
A marking step of extracting and marking a data region that varies depending on a communication network environment from the extracted IP packet;
Generating the test data to be used during the communication network test using the extracted IP packet and the marked changeable data area;
An output step of outputting and storing the generated test data in a storage means;
A communication network test data generation method characterized by comprising: A display step of displaying a selection candidate as a diagnostic rule at the time of the communication network test, respectively, a plurality of generated test data;
A selection step for selecting an arbitrary diagnosis rule from the plurality of displayed diagnosis rules;
The communication network test data generation method according to claim 5, further comprising: The extraction step includes
A display step for displaying selection candidates of protocol information included in each of a plurality of monitored IP packets;
A selection step of selecting protocol information targeted in the communication network test from a plurality of displayed protocol information,
7. The communication network test data generation method according to claim 5, wherein an IP packet having the selected protocol information is extracted. The changeable data area is a source IP address and a destination IP address that can be arbitrarily set,
The generating step includes
The protocol data included in the IP packet at the time of transmission, the type of the protocol, the transmission test data including at least the source IP address and the destination IP address, and included in the IP packet at the time of reply 8. The communication network test data according to claim 7, wherein the test data having protocol data, a type of the protocol, test data for reception including at least the source IP address and the destination IP address is generated. Generation method.

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