JP6743332B2 - Measuring device, measuring system and measuring method - Google Patents

Description

The present invention relates to a measuring device, a measuring system and a measuring method for measuring the performance of a network, for example.

Conventionally, as a measuring device connected to a network, a multi-user management device is known that is remotely controlled from a plurality of externally connected devices via the network and measures a device under test (see Patent Document 1).

The conventional apparatus described in Patent Document 1 performs a measurement corresponding to the measurement information on the basis of a measurement unit that measures the device under test and a control signal from an external control device and measurement information set by the user. And a control unit for controlling the control.

With this configuration, in the conventional device, when the external control device performs the remote command control or the remote GUI control, the control unit causes the measuring unit to measure the device under measurement according to the control content. ..

JP, 2016-171456, A

By the way, generally, the conventional measuring device is provided with a plurality of applications, a desired application is selected from the plurality of applications, and the application is executed to perform the measurement. Therefore, a configuration is conceivable in which the external control device described in Patent Document 1 switches the application executed by the measurement unit to a desired application, and the external control device and the measurement unit cooperate to measure the performance of the network.

However, the conventional technique has a problem that it is necessary to provide a control network for switching the application of the counter device which is the other party to cooperate with, in addition to the measured network to be measured.

Specifically, conventionally, the port of the measured network is managed by the application side, so if the other device shuts down the application that is currently running in order to switch the application, the other side of the measured network is connected. Since it becomes impossible to transmit the control signal to the counter device, it is necessary to newly provide a control network to transmit the control signal to the counter device.

Furthermore, if a new network for control is to be provided, the speed of the network of the station where the measuring device of the measured network is used is not always sufficient, and it is difficult to control using VNC or the like. There may be. In addition, there is a case where a control network does not exist in the station building, and there has been a demand for a measuring device that can switch the application of the opposite device without using the control network.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a measuring device, a measuring system, and a measuring method that can switch the application of the opposite device without providing a control network. And

The measurement device according to claim 1 of the present invention switches from at least one measurement device (45, 50, 55) having an application for measuring the performance of a measured network (2) as a measurement target from a switching source application. A measuring device (10) for instructing switching to a destination application, a switching target measuring device selecting means (11) for selecting a switching target measuring device (50) to be switched to the switching destination application, and the switching destination application. A transaction including a switching destination application selecting unit (21) for selecting, a switching processing of the switching source application, a startup processing of the switching destination application, and a setting processing of setting a predetermined parameter value in the switching destination application. An instruction command transmitting means (24) for transmitting an instruction command for instructing processing to the switching target measuring device via the network to be measured, and a switching target application by causing the switching target measuring device to execute the switching destination application. And a measuring means (13) for measuring the performance.

With this configuration, the measuring device according to claim 1 of the present invention causes the switching target measuring device, which is an opposite device, to perform a shutdown process of the switching source application, a startup process of the switching destination application, and a predetermined parameter value for the switching destination application. Since the setting process for setting and the transaction process including the instruction process are executed, it is possible to communicate with the other device via the network under test even after the other device switches the application.

Therefore, the measuring device according to claim 1 of the present invention can switch the application of the opposite device without providing a control network.

The measuring device according to claim 2 of the present invention further comprises a display means (14) for displaying an input screen for inputting the parameter value of the switching destination application, and the display means sets for each switching destination application. Displays the input screen of the required parameter values, and hides the input screen of the parameter values that do not require setting.

With this configuration, the measuring device according to claim 2 of the present invention displays the input screen of the parameter value that needs to be set and hides the input screen of the parameter value that does not need to be set. It is possible to prevent an erroneous operation by the user in setting.

A measuring instrument according to claim 3 of the present invention is the measuring instrument according to claim 1 or 2, wherein the instruction command receiving means (61) receives the instruction command from the measuring device via the network under measurement. ), a transaction processing executing means (62) for executing the transaction processing on condition that the instruction command is received, and a switching destination application executing means (51a) for executing the switching destination application. have.

With this configuration, the measuring device according to claim 3 of the present invention executes the transaction process on condition that the instruction command is received. Therefore, even after switching the application, the measuring device and the measuring device can communicate with each other via the network to be measured. Can communicate.

A measurement system according to claim 4 of the present invention has a configuration including the measurement device according to claim 1 or 2, and at least one measurement device according to claim 3.

With this configuration, the measurement system according to the fourth aspect of the present invention can switch the application of the opposite device without providing a control network.

A measurement method according to claim 5 of the present invention is such that at least one measuring device (45, 50, 55) having an application for measuring the performance of a measured network (2) as a measurement target is switched from a switching source application. A measuring method using a measuring device (10) that gives an instruction to switch to a destination application, and a switching target measuring equipment selecting step (S14) for selecting a switching target measuring equipment (50) to be switched to the switching destination application. A switching destination application selecting step (S17) for selecting the switching destination application, a shutdown processing for the switching source application, a startup processing for the switching destination application, and a setting processing for setting a predetermined parameter value in the switching destination application. And an instruction command transmitting step (S19) of transmitting an instruction command instructing a transaction process to the switching target measuring device via the network under measurement, and causing the switching target measuring device to execute the switching destination application. The measurement step (S22 to S24) for measuring the performance of the measured network is included.

With this configuration, in the measurement method according to claim 5 of the present invention, the switching target measurement device, which is an opposite device, performs a shutdown process of the switching source application, a startup process of the switching destination application, and a predetermined parameter value for the switching destination application. Since the setting process for setting and the transaction process including the instruction process are executed, it is possible to communicate with the other device via the network under test even after the other device switches the application.

Therefore, the measuring method according to the fifth aspect of the present invention can switch the application of the opposite device without providing a control network.

INDUSTRIAL APPLICABILITY The present invention can provide a measuring device, a measuring system, and a measuring method, which have the effect of being able to switch the application of a counter device without providing a control network.

It is a block configuration diagram in one embodiment of a measurement system according to the present invention. It is a block block diagram in one Embodiment of the server measuring device which concerns on this invention. It is a block block diagram in one Embodiment of the client measuring device which concerns on this invention. It is a figure which shows an example of the search result of a client measuring device in one Embodiment of the measuring system which concerns on this invention. It is a figure which shows the example of a setting screen of the parameter value of a reflector application in one Embodiment of the measurement system which concerns on this invention. It is a figure which shows the example of a setting screen of the parameter value of RFC2544 test in one Embodiment of the measurement system which concerns on this invention. It is a figure which shows the example of a setting screen of the parameter value of RFC6349 test in one Embodiment of the measurement system which concerns on this invention. It is a figure which shows the operation example in one Embodiment of the measuring system which concerns on this invention.

Embodiments of the present invention will be described below with reference to the drawings.

First, the configuration of an embodiment of the measurement system according to the present invention will be described. In the following description, the application may be abbreviated as APP.

As shown in FIG. 1, the measurement system 1 according to the present embodiment includes a server measurement device 10 and client measurement devices 45, 50 and 55 connected to a measured network 2 to be measured. This measurement system 1 targets a measured network 2. The network under test 2 may be, for example, a network that connects personal computers in a company or a network that connects a central government agency and a local government by wire communication or wireless communication.

The server measurement device 10 switches an application currently being activated by a client measurement device to a predetermined application and measures the characteristics of the measured network in cooperation with the client measurement device. The server measurement device 10 is an example of a measurement device. Hereinafter, an application activated by the client measuring device, which is a partner of the cooperation, before the switching is called a switching source application, and an application activated after the switching is called a switching destination application.

As shown in FIG. 2, the server measurement device 10 includes a client selection unit 11, a transaction instruction device 20, a server storage unit 30, a signal generation unit 12, a measurement unit 13, a display unit 14, an operation unit 15, and a server control unit 16. The server communication unit 17 is provided.

The client selection unit 11 is adapted to search for a client measuring device connected to the measured network 2. In addition, the client selection unit 11 selects one or a plurality of client measurement devices that are application switching targets from among the client measurement devices 45, 50, and 55 that are operating according to the operation of the operation unit 15 by the user. It is like this. In the present embodiment, the client selection unit 11 selects the client measuring device 50. That is, the client measuring device 50 is an example of a switching target measuring device, and the client selecting unit 11 is an example of a switching target measuring device selecting unit.

The transaction instruction device 20 includes an APP selection unit 21, a parameter value setting unit 22, an SCPI generation unit 23, and an SCPI transmission unit 24, and performs transaction processing (some information processing) on the client measurement device 50 selected by the client selection unit 11. To instruct. Note that SCPI is an abbreviation for “Standard Commands for Programmable Instruments”.

Specifically, the transaction instruction device 20 performs a transaction process including a shutdown process of a switching source application, a startup process of a switching destination application, and a setting process of setting a predetermined parameter value in the switching destination application, as a client measurement device. It is supposed to give instructions to 50.

The APP selecting unit 21 is adapted to select an application to be activated by the client measuring device 50. The APP selecting unit 21 is an example of a switching destination application selecting unit. It should be noted that the APP selecting unit 21 grasps in advance the information of the applications included in the client measuring devices 45, 50 and 55.

The parameter value setting unit 22 is configured to set a parameter value for performing a predetermined measurement for the application selected by the APP selecting unit 21.

The SCPI generating unit 23 is adapted to generate an SCPI command for instructing transaction processing. The SCPI command includes information for instructing a transaction process including a shutdown process for the switching source application, a startup process for the switching destination application, and a setting process for setting a predetermined parameter value in the switching destination application. ..

The SCPI transmitting unit 24 is configured to transmit the SCPI command generated by the SCPI generating unit 23 to a predetermined client measuring device. The SCPI transmitter 24 is an example of an instruction command transmitter.

The server storage unit 30 stores a plurality of applications for evaluating the performance of the measured network 2. For example, the server storage unit 30 stores applications such as a BER test APP31 for performing a BER (Bit Error Rate) test, an RFC2544 test APP32 for performing an RFC2544 test, and an RFC6349 test APP33 for performing an RFC6349 test. ing. The RFC2544 test and the RFC6349 test are tests based on the standards of RFC (Request For Comments) 2544 and 6349 determined by IETF (Internet Engineering Task Force), respectively.

The signal generator 12 is adapted to generate a signal for evaluating the characteristics of the network under test 2. For example, the signal generator 12 generates a test signal for performing a BER test and transmits the test signal to a predetermined client measurement device.

The measurement unit 13 is configured to perform a predetermined measurement based on an application executed by the server APP execution unit 16a described later. The measuring unit 13 is an example of measuring means.

The display unit 14 is configured to display information on the measurement result of the measurement unit 13 under the control of the server control unit 16. The display unit 14 is an example of a display unit.

The operation unit 15 is operated by the user to set parameters such as measurement items for measuring the measured network 2, measurement conditions, and judgment conditions. For example, a keyboard, dial, or It is composed of an input device such as a mouse and a control circuit for controlling these.

The server control unit 16 includes, for example, a CPU, a ROM, a RAM, etc., and controls the entire apparatus according to a program stored in the ROM. The server control unit 16 also includes a server APP execution unit 16a that executes an application designated by a user operating the operation unit 15.

The server communication unit 17 is configured to communicate with a predetermined client measuring device via the measured network 2.

Next, the configuration of the client measuring device 50 as a representative of the client measuring devices 45, 50 and 55 will be described with reference to FIG. These client measuring devices 45, 50 and 55 are examples of measuring devices. Instead of the client measuring device according to the present embodiment, for example, a device (for example, a router) that is not generally used as a measuring device may be provided with a function equivalent to the client measuring device.

As shown in FIG. 3, the client measurement device 50 includes a transaction processing device 60, a client storage unit 70, a client control unit 51, and a client communication unit 52.

The transaction processing device 60 includes an SCPI receiving unit 61 and a transaction processing unit 62.

The SCPI receiving unit 61 is adapted to receive an SCPI command sent from the server measurement device 10 for instructing transaction processing. The SCPI receiving unit 61 is an example of an instruction command receiving unit.

When the SCPI receiving unit 61 receives an SCPI command, the transaction processing unit 62 executes transaction processing related to application switching based on the information included in the SCPI command. The transaction processing unit 62 is an example of transaction processing execution means.

That is, in the measurement system 1 according to the present embodiment, the transaction processing unit 62 performs a shutdown process for the switching source application, a startup process for the switching destination application, and a setting process for setting a predetermined parameter value in the switching destination application. By processing as one transaction, the server measurement device 10 and the client measurement device 50 can communicate with each other via the measured network 2 even after switching to the switching destination application.

In other words, in the measurement system 1 according to the present embodiment, the server measurement device 10 causes the client measurement device 50, which is an opposite device of the server measurement device 10, to execute the above-described transaction processing, so that the server measurement device 10 transmits the measured data via the measured network 2. That is, in-band communication enables communication with the client measuring device 50.

The client storage unit 70 stores an application for evaluating the performance of the measured network 2. For example, the client storage unit 70 stores applications such as the reflector APP71, RFC2544 test APP72, RFC6349 test APP73, and the like.

The reflector APP71 is an application that replaces the MAC address and IP address of the frame received from the server measurement device 10 and returns the frame to the server measurement device 10, and is used, for example, in the BER test. The RFC2544 test APP72 is an application for performing a throughput test, a frame loss test, and the like according to the RFC2544 standard. RFC6349 test APP73 is an application for performing a TCP throughput test and the like according to the RFC6349 standard.

The client control unit 51 includes, for example, a CPU, a ROM, a RAM, etc., and controls the entire apparatus according to a program stored in the ROM. Further, the client control unit 51 includes a client APP execution unit 51a that executes an application designated by the server measurement device 10. The client APP execution unit 51a is an example of a switching destination application execution unit.

The client communication unit 52 communicates with the server measurement device 10 via the measured network 2.

Next, an example of a search result when the client selection unit 11 of the server measurement device 10 searches for the client measurement device will be described with reference to FIG. FIG. 4 shows an example in which the search result of the client measuring device connected to the predetermined network under measurement is displayed on the screen of the display unit 14.

As shown in FIG. 4, a nickname, an IP address, a lock state, and a currently activated application (switching source application) are displayed for each of the searched five client measuring devices having numbers 1 to 5. It should be noted that a device whose key mark is displayed in the locked state column is protected by a password.

Focusing on the switching source application, for example, it is shown that the application for the BER test is activated for the client measuring apparatus with number 1 and the RFC2544 test is activated for the client measuring apparatus with number 3.

Therefore, the measurement system 1 according to the present embodiment presents this screen to the user to select a client measurement device connected to a predetermined network under measurement, and switches the application to a desired application, thereby measuring the measurement target. The desired measurements can be made on the network.

Next, an example in which the parameter value setting unit 22 of the server measurement device 10 sets the parameter value of the switching destination application will be described with reference to FIGS.

FIG. 5 shows a parameter value setting screen 81 of the reflector APP71 selected by the APP selector 21 when the measurement system 1 according to the present embodiment performs the BER test on the measured network 2.

As shown in FIG. 5, the setting screen 81 of the reflector APP71 has columns for setting the parameter values of "Application", "MAC", "Password", and "IP". The “Application” column indicates that “Reflector” (reflector) has been selected from the pull-down menu. In the “MAC” column, the MAC address of the transmission destination (Dst) for switching the application is set. A password is entered in the "Password" field. The IP address of the sender (Src) is entered in the "IP" field.

FIG. 6 shows a parameter value setting screen 82 of the RFC2544 test APP72 selected by the APP selecting unit 21 when the measurement system 1 according to the present embodiment performs the RFC2544 test on the network under test 2. .. It should be noted that the description overlapping with FIG. 5 is omitted.

As shown in FIG. 6, the setting screen 82 of the RFC2544 test APP 72 is provided with columns for setting the parameter values of “Application”, “MAC”, “Password”, “IP”, “Gateway”, and “VLAN”. Has been. The “Application” column indicates that “RFC2544” (RFC2544 test) has been selected. In the “MAC” column, the MAC address of the transmission source (Src) is set in addition to the transmission destination (Dst). In the "IP" field, the IP address and network mask of the destination (Dst) are input in addition to the IP address of the source (Src). In the "Gateway" column, a check column for enabling the gateway and its address column are provided. The “VLAN” (Virtual LAN) column has a pull-down menu for setting whether VLAN is valid or invalid.

FIG. 7 shows the parameter value setting screen 83 of the RFC 6349 test APP 73 selected by the APP selecting unit 21 when the measurement system 1 according to the present embodiment performs the RFC 6349 test on the measured network 2. .. The setting screen 83 of this RFC 6349 test APP 73 is different from the setting screen 82 shown in FIG.

As described above, in the present embodiment, the setting screen 81 (see FIG. 5) of the reflector APP71 includes the setting screen 82 (see FIG. 6) of the RFC2544 test APP72 and the setting screen 83 (see FIG. 7) of the RFC6349 test APP73. By comparison, the number of input sections for setting parameter values is reduced. This is because, when the reflector application is used, the items for setting the parameter values are limited as compared with the RFC2544 test and the RFC6349 test. Specifically, in applications such as the RFC2544 test and the RFC6349 test, since the server measurement device 10 and the client measurement device 50 perform bidirectional communication, both the source and destination IP addresses are required. On the other hand, when the client measurement device 50 uses the reflector application, the client measurement device 50 itself does not transmit the packet, and thus the transmission IP address is unnecessary.

Therefore, in consideration of the difference in the setting of the parameter value depending on the application, in the present embodiment, the input screen of the parameter value that needs to be set is displayed, and the input screen of the parameter value that does not need to be set is hidden. .. With this configuration, the server measurement device 10 according to the present embodiment can prevent a user's erroneous operation in setting the parameter value of the application, and facilitate the setting even for a user who does not have specialized knowledge. be able to.

Next, the operation of the measurement system 1 according to this embodiment will be described with reference to FIG. An example in which the measurement system 1 performs a BER test on the measured network 2 will be given.

The client selection unit 11 of the server measurement device 10 transmits a search request packet for searching for the client measurement device via the measured network 2 by a broadcast or unicast method (step S11).

The client measuring devices 45, 50 and 55 that have received the search request packet return a search response packet in response to the search request packet to the server measuring device 10 via the network under measurement 2 (step S12). The search response packet is received by the server control unit 16 of the server measurement device 10, and the server control unit 16 recognizes that the client measurement devices 45, 50 and 55 have returned the search response packet.

According to the display control of the server control unit 16, the display unit 14 of the server measurement device 10 displays a list that the client measurement devices 45, 50 and 55 are present as the client measurement devices connected to the measured network 2 (step S13). ). At this time, the search result as shown in FIG. 4, for example, is displayed on the screen of the display unit 14.

The client selection unit 11 of the server measurement device 10 selects, for example, the client measurement device 50 as an application switching target according to the operation of the operation unit 15 by the user (step S14).

The server communication unit 17 of the server measurement device 10 and the client communication unit 52 of the client measurement device 50 establish a TCP connection with each other (step S15).

The server control unit 16 of the server measuring device 10 displays the parameter value setting screen of the BER test APP31 on the display unit 14, and sets the parameter value input by the user operating the operation unit 15 to the BER test APP31 (step S16).

The APP selecting unit 21 of the server measuring device 10 selects the reflector APP71 as the switching destination application of the client measuring device 50 in order to perform the BER test on the measured network 2 (step S17).

The parameter value setting unit 22 of the server measurement device 10 displays the parameter value setting screen 81 of the reflector APP71 shown in FIG. 5, for example, on the display unit 14, and acquires the parameter value input by the user operating the operation unit 15. Yes (step S18).

The SCPI generation unit 23 generates an SCPI command as an instruction command for instructing transaction processing, and the SCPI transmission unit 24 transmits the SCPI command to the client measurement device 50 (step S19). This SCPI command instructs transaction processing including shutdown processing for the switching source application, startup processing for the reflector APP71 that is the switching destination application, and setting processing for setting the parameter value acquired in step S18 in the reflector APP71. It is equipped with information for

The SCPI receiving unit 61 of the client measuring device 50 receives the SCPI command transmitted from the server measuring device 10, and the transaction processing unit 62, based on the information included in the SCPI command, performs the shutdown process of the switching source application and the reflector. The startup process of the APP 71 and the setting process of setting a predetermined parameter value in the reflector APP 71 are processed as one transaction. As a result, the application of the client measuring device 50 is switched to the reflector APP71 (step S20).

The transaction processing unit 62 transmits a completion notification message indicating that the application of the client measurement device 50 has been switched to the reflector APP71 to the server measurement device 10 (step S21).

Upon receiving the completion notification message, the server control unit 16 of the server measurement device 10 causes the server APP execution unit 16a to execute the BER test APP31, and measures the test signal generated by the signal generation unit 12 to perform the BER test. It is transmitted to the client measuring device 50 via the network 2 (step S22).

The client control unit 51 of the client measurement device 50 causes the client APP execution unit 51a to execute the reflector APP71, and transmits the received test signal to the server measurement device 10 via the network under test 2 as a signal under test (step S23).

The measurement unit 13 of the server measurement device 10 measures the bit error rate (step S24), and the display unit 14 displays the measurement result of the bit error rate (step S25).

As described above, the measurement system 1 according to the present embodiment sets, in the client measuring device 50, which is an opposite device, a shutdown process of a switching source application, a startup process of a switching destination application, and a predetermined parameter value in the switching destination application. Since the setting processing and the transaction processing including the setting processing are instructed and executed, the client measuring apparatus 50 can communicate with the client measuring apparatus 50 via the measured network 2 even after the client measuring apparatus 50 switches the application.

Therefore, the measurement system 1 according to the present embodiment can switch the application of the opposite device (client measurement device 50) without providing a control network.

It should be noted that although three client measuring devices are illustrated in the above-described embodiment, the present invention is not limited to this, and the same effect can be obtained even if the application is switched to at least one client measuring device. can get.

Further, in the above embodiment, only the measured network 2 is set as the measurement target, but the same effect can be obtained even when the devices connected to the measured network 2 are set as the measurement target.

As described above, the measuring device, the measuring system, and the measuring method according to the present invention have the effect of switching the application of the opposite device without providing a control network, and measure the performance of the network or the like. It is useful as a measuring device, a measuring system, and a measuring method.

1 measuring system 2 network to be measured 10 server measuring device (measuring device)
11 Client selection unit (switching target measurement device selection means)
13 Measuring unit (measuring means)
14 Display unit (display means)
16 server control unit 16a server APP execution unit 20 transaction instruction device 21 APP selection unit (switch destination application selection means)
22 parameter value setting unit 23 SCPI generation unit 24 SCPI transmission unit (instruction command transmission means)
31 BER Exam APP
32, 72 RFC2544 Test APP
33, 73 RFC 6349 Test APP
45, 50, 55 Client measuring device (measuring equipment)
51 client control section 51a client APP execution section (switch destination application execution means)
60 transaction processing device 61 SCPI receiver (instruction command receiving means)
62 transaction processing unit (transaction processing execution means)
71 Reflector APP
81 Reflector APP setting screen 82 RFC2544 test APP setting screen 83 RFC6349 test APP setting screen

Claims (5)

Measuring device (10) for instructing at least one measuring device (45, 50, 55) having an application for measuring the performance of the measured network (2) to be measured to switch from the switching source application to the switching destination application And
Switching target measuring device selecting means (11) for selecting a switching target measuring device (50) to be switched to the switching destination application,
Switching destination application selecting means (21) for selecting the switching destination application,
An instruction command for instructing a transaction process including a shutdown process of the switching source application, a startup process of the switching destination application, and a setting process of setting a predetermined parameter value in the switching destination application is transmitted via the measured network. Instruction command transmitting means (24) for transmitting to the switching target measuring device,
Measuring means (13) for measuring the performance of the measured network by causing the switching target application to execute the switching destination application;
A measuring device comprising: A display unit (14) for displaying an input screen for inputting the parameter value of the switching destination application;
The display unit displays an input screen of a parameter value that needs to be set and hides an input screen of a parameter value that does not need to be set, for each of the switching destination applications. 1. The measuring device according to 1. The measuring device according to claim 1 or 2, wherein
Instruction command receiving means (61) for receiving the instruction command from the measuring device via the network under measurement,
Transaction process executing means (62) for executing the transaction process on condition that the instruction command is received,
Switching destination application executing means (51a) for executing the switching destination application,
A measuring instrument characterized by comprising. A measuring system comprising: the measuring device according to claim 1 or 2; and at least one measuring device according to claim 3. Measuring device (10) for instructing at least one measuring device (45, 50, 55) having an application for measuring the performance of the measured network (2) to be measured to switch from the switching source application to the switching destination application A measurement method using
A switching target measuring device selecting step (S14) for selecting a switching target measuring device (50) to be switched to the switching destination application,
A switching destination application selecting step (S17) for selecting the switching destination application,
An instruction command for instructing a transaction process including a shutdown process of the switching source application, a startup process of the switching destination application, and a setting process of setting a predetermined parameter value in the switching destination application is transmitted via the measured network. An instruction command transmitting step (S19) for transmitting to the switching target measuring device,
A measurement step (S22 to S24) of measuring the performance of the measured network by causing the switching target application to execute the switching destination application;
A measuring method comprising:

Images