JP6583927B2 - Management device, management method, and management program - Google Patents

Description

  The present invention relates to a management device, a management method, and a management program.

  Currently, communication systems using a wireless local area network (LAN) are widely used (for example, Patent Document 1). Then, as a function of the wireless LAN router device, the network configuration including the wireless LAN devices connected to the wireless LAN router device (hereinafter, simply referred to as “device”) is managed, and the connection state of the devices is illustrated. A function (that is, a function to be visualized) has been installed.

JP 2009-2205060 A

  However, when the wireless LAN bridge device is connected to the wireless LAN router device, it is difficult for the wireless LAN router device side to grasp the network configuration including the devices connected under the wireless LAN bridge device. In particular, a device connected to a wireless LAN bridge device that is wired to the wireless LAN router device is connected to the wireless LAN bridge device wirelessly or wiredly when viewed from the wireless LAN router device. Regardless, it appears as a device that is wired to the wireless LAN router device. That is, conventionally, there is a possibility that the network configuration including one or a plurality of devices that are directly or indirectly connected to the wireless LAN router device by wire and wireless cannot be accurately grasped.

  An object of the present invention is to provide a management device, a management method, and a management device that can improve the accuracy of grasping one or a plurality of devices that are directly or indirectly connected to a wireless LAN router device by wire and wireless. And providing a management program.

  One or more management devices according to the first aspect of the present invention are connected directly or indirectly by wired and wireless to a wireless LAN router device configured to be connectable to a wireless LAN bridge device. A transmission control unit that transmits an inquiry signal for inquiring a MAC address to the IP address of the one or more devices to the communication interface of the wireless LAN router device, A wireless monitoring unit that monitors a wireless signal, and based on presence or absence of detection by the wireless monitoring unit of a wireless response signal to the inquiry signal wirelessly transmitted from the determination target device among the one or more devices, A determination unit that determines whether the determination target device is a device wirelessly connected to the wireless LAN bridge device.

  The management method according to the second aspect of the present invention includes one or a plurality of wired or wirelessly connected wireless LAN router devices configured to be connectable to a wireless LAN bridge device. A management method executed by a management device that manages a plurality of devices, wherein an inquiry signal for inquiring a MAC address to an IP address of the one or more devices is transmitted to a wired interface of the wireless LAN router device. Monitoring the wireless signal and determining whether the determination target device is wireless based on presence or absence of detection of a wireless response signal for the inquiry signal wirelessly transmitted from the determination target device of the one or more devices in the monitoring It is determined whether the device is wirelessly connected to the LAN bridge device.

  One or a plurality of management programs according to the third aspect of the present invention are connected directly or indirectly by wired and wireless to a wireless LAN router device configured to be connectable to a wireless LAN bridge device. A management device that manages the devices of the wireless LAN router is configured to transmit an inquiry signal for inquiring a MAC address to the IP address of the one or more devices to the wired interface of the wireless LAN router device, and monitor the wireless signal The determination target device is wirelessly connected to the wireless LAN bridge device based on presence or absence of detection of a wireless response signal for the inquiry signal wirelessly transmitted from the determination target device of the one or more devices in the monitoring. The process of determining whether or not the device has been performed is executed.

  Advantageous Effects of Invention According to the present invention, a management device, a management method, and a management that can improve the accuracy of grasping one or a plurality of devices that are directly or indirectly connected to a wireless LAN router device by wire and wireless. A program can be provided.

It is a block diagram which shows an example of the management apparatus of 1st Embodiment. It is a figure which shows an example of the communication network of 2nd Embodiment. It is a flowchart which shows an example of the processing operation of the management apparatus of 2nd Embodiment. It is a figure which shows the continuation of FIG. It is a figure which shows an example of a network management table. It is a figure which shows an example of a network management table. It is a block diagram which shows an example of the management apparatus of 3rd Embodiment. It is a figure which shows an example of the hardware constitutions of a management apparatus.

  Hereinafter, embodiments will be described with reference to the drawings. In the embodiment, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

<First Embodiment>
FIG. 1 is a block diagram illustrating an example of a management apparatus according to the first embodiment. The management apparatus 10 shown in FIG. 1 is used, for example, by being mounted on a wireless LAN router apparatus (not shown) configured so that a wireless LAN bridge apparatus (not shown) can be connected to the wireless LAN router apparatus. Manage one or more devices connected directly or indirectly by wire and wireless. In FIG. 1, the management apparatus 10 includes a transmission control unit 10A, a wireless monitoring unit 10B, and a determination unit 10C.

  The transmission control unit 10A makes an inquiry to a communication interface (not shown) of the wireless LAN router device for a MAC (Media Access Control) address addressed to an IP (Internet Protocol) address of the one or more devices. Send an inquiry signal.

  The radio monitoring unit 10B monitors radio signals. The wireless monitoring unit 10B can also monitor wireless signals other than those addressed to the wireless LAN router device by operating in a promiscuous mode, for example.

  The determination unit 10C determines whether the “determination target device” is based on whether or not the wireless monitoring unit 10B detects a wireless response signal with respect to an inquiry signal wirelessly transmitted from the “determination target device” among the one or more devices. It is determined whether the device is wirelessly connected to a wireless LAN bridge device (not shown). This determination process is performed for each device by sequentially changing the determination target device among the one or more devices.

  As described above, according to the first embodiment, the transmission control unit 10A in the management device 10 inquires of the communication interface of the wireless LAN router device about the MAC address to the IP address of the one or more devices. The inquiry signal is sent. Then, the determination unit 10C determines whether the determination target device is a wireless LAN based on the presence / absence of detection by the wireless monitoring unit 10B of a wireless response signal to the inquiry signal wirelessly transmitted from the determination target device among the one or more devices. It is determined whether the device is wirelessly connected to the bridge device.

  With the configuration of the management device 10, the determination target device is a device wirelessly connected to the wireless LAN bridge device based on the presence or absence of detection by the wireless monitoring unit 10B of the wireless response signal for the inquiry signal wirelessly transmitted from the determination target device. It can be determined whether or not there is. Thereby, the precision which grasps | ascertains the 1 or several apparatus directly or indirectly connected with the wireless LAN router apparatus by wire and radio | wireless can be improved.

Second Embodiment
The second embodiment relates to a more specific embodiment.

<Outline of communication network>
FIG. 2 is a diagram illustrating an example of a communication network according to the second embodiment. In FIG. 2, the communication network 1 includes a wireless LAN router device 20 and a plurality of devices connected to the wireless LAN router device 20 directly or indirectly by wire and wireless. The plurality of devices include a wireless LAN bridge device 30, wireless devices 40-1 and 40-2, and wired devices 50-1 and 50-2. In FIG. 2, the wireless device 40-1 is directly wirelessly connected to the wireless LAN bridge device 30, that is, indirectly connected to the wireless LAN router device 20. The wireless device 40-2 is directly wirelessly connected to the wireless LAN router device 20. The wired device 50-1 is directly connected to the wireless LAN bridge device 30 by wire, that is, indirectly connected to the wireless LAN router device 20. The wired device 50-2 is directly connected to the wireless LAN router device 20 by wire. Hereinafter, the wireless devices 40-1 and 40-2 may be collectively referred to as a wireless device 40. The wired devices 50-1 and 50-2 may be collectively referred to as a wired device 50. In FIG. 2, solid lines connecting the devices and between the devices and the devices indicate wired connections, and dotted lines indicate wireless connections.

<Configuration example of wireless LAN router device>
As illustrated in FIG. 2, the wireless LAN router device 20 includes a management device 11, a communication interface unit 21, and a display output unit 23.

  The management device 11 includes a table management unit 11A in addition to the transmission control unit 10A, the wireless monitoring unit 10B, and the determination unit 10C described in the first embodiment.

  In the second embodiment, for example, the determination unit 10C determines that the transmission source device of the wireless response signal detected by the wireless monitoring unit 10B is the “first type device” wirelessly connected to the wireless LAN bridge device 30. . In addition, the determination unit 10C is not a transmission source device of the wireless response signal detected by the wireless monitoring unit 10B, and the MAC address (BSSID :: Basic) included in the wireless response signal wirelessly transmitted from the first type device. A transmission source device that has transmitted a wired response signal including a MAC address satisfying the “similar criterion” with the service set indentifier is determined to be the wireless LAN bridge device 30. Here, the wireless response signal includes the IP address and MAC address of the transmission source device of the wireless response signal. The wired response signal includes the IP address and MAC address of the transmission source device of the wired response signal.

  Further, the determination unit 10C is not the transmission source device of the wireless response signal detected by the wireless monitoring unit 10B, and the MAC address (BSSID) included in the wireless response signal wirelessly transmitted from the first type device. A wireless LAN bridge device 30 in which a transmission source device that has transmitted a wired response signal including a MAC address that does not satisfy the “similarity criteria” between the wireless LAN router device 20 and the wireless LAN bridge device 30 is wired. It is determined that the device is not.

  “When the above similarity criterion is satisfied” is included in the MAC response (BSSID) included in the wireless response signal wirelessly transmitted from “first type device” and the wired response signal transmitted by wire from the transmission source device. This includes the case where the MAC address matches. Here, when the wireless LAN bridge device 30 has, for example, four BSSIDs, the MAC address of the wireless LAN bridge device 30 itself is used as one BSSID, and the remaining three BSSIDs are the MAC addresses of the wireless LAN bridge device 30. In some cases, a value obtained by adding 1, 2, 3 to each is used. This is an example of a BSSID creation rule. Therefore, even if the MAC address (BSSID) included in the wireless response signal wirelessly transmitted from the “first type device” does not match the MAC address included in the wired response signal wired from the transmission source device, both MACs When the address difference is any one of 1, 2, and 3, it can be regarded as “when the similarity criterion is satisfied”. That is, even if the MAC address (BSSID) included in the wireless response signal wirelessly transmitted from the “first type device” does not match the MAC address included in the wired response signal wired from the transmission source device, both MACs If there is a relationship corresponding to the BSSID creation rule in the wireless LAN bridge device 30 between the addresses, it can be determined that “the similarity criterion is satisfied”.

  The table management unit 11A manages the “network management table”. The table management unit 11A, for example, information on the device type corresponding to the connection state determined by the determination unit 10C for a plurality of devices connected directly or indirectly to the wireless LAN router device 20 by wire and wireless. Is used to update the network management table. The network management table and the update of the network management table will be described in detail later.

  The communication interface unit 21 is a communication interface with devices under the control of the wireless LAN router device 20. The communication interface unit 21 includes a wired connection processing unit 21A and a wireless connection processing unit 21B.

  The wired connection processing unit 21 </ b> A is an interface that performs a wired connection with a device that is subordinate to the wireless LAN router device 20 in the communication network 1. The wired connection processing unit 21A transmits the inquiry signal in response to an instruction from the transmission control unit 10A. Further, the wired connection processing unit 21 </ b> A receives a response signal sent from the wired device via the wire in response to the inquiry signal, and outputs the response signal to the management device 11.

  The wireless connection processing unit 21 </ b> B is an interface that wirelessly connects to a lower-level device of the wireless LAN router device 20 in the communication network 1.

  The display output unit 23 outputs the contents of the network management table managed by the table management unit 11A in a predetermined output mode. The predetermined output mode may be a mode of display on a display unit (not shown) included in the wireless LAN router device 20 or a mode of display as a web page.

<Configuration example of wireless LAN bridge device>
As shown in FIG. 2, the wireless LAN bridge device 30 includes a wired connection processing unit 30A, a wired connection processing unit 30B, and a wireless connection processing unit 30C.

  The wired connection processing unit 30 </ b> A is an interface that performs wired connection with a device (that is, the wireless LAN router device 20) that is higher than the wireless LAN bridge device 30 in the communication network 1. The wired connection processing unit 30A is connected to each of the wired connection processing unit 30B and the wireless connection processing unit 30C inside the wireless LAN bridge device 30.

  The wired connection processing unit 30 </ b> B is an interface that performs a wired connection with a lower-level device of the wireless LAN bridge device 30 in the communication network 1.

  The wireless connection processing unit 30 </ b> C is an interface that wirelessly connects to a lower-level device of the wireless LAN bridge device 30 in the communication network 1.

<Configuration example of wireless device>
As shown in FIG. 2, the wireless device 40 has a wireless connection processing unit 40A. The wireless connection processing unit 40A is an interface that wirelessly connects to a device (that is, the wireless LAN router device 20 or the wireless LAN bridge device 30) that is a higher rank of the wireless device 40 in the communication network 1.

<Configuration example of wired devices>
As shown in FIG. 2, the wired device 50 includes a wired connection processing unit 50A. The wired connection processing unit 50 </ b> A is an interface for wired connection with a device (that is, the wireless LAN router device 20 or the wireless LAN bridge device 30) that is higher in the communication network 1 than the wired device 50.

<Operation example of communication network>
An example of the processing operation of the communication network 1 having the above configuration will be described. In particular, the processing operation of the management apparatus 11 will be described. 3 and 4 are flowcharts illustrating an example of the processing operation of the management apparatus according to the second embodiment. FIG. 4 is a diagram showing a continuation of FIG. Here, at the stage before the flow of FIG. 3 and FIG. 4 starts, the table management unit 11A has a plurality of devices connected directly or indirectly to the wireless LAN router device 20 by wire and wireless. It is assumed that an IP address has been acquired and reflected in the network management table. An example of the network management table at this stage is shown in FIG.

  The table management unit 11A acquires the IP address of a device (in this case, the wireless device 40-2) that is directly wirelessly connected to the wireless LAN router device 20 from the wireless connection processing unit 21B, and in the network management table The information of the item “device type” of the entry including the acquired IP address is updated to “direct (wireless)” (step S11). This “direct (wireless)” means that the wireless LAN router device 20 is directly wirelessly connected.

  Next, the transmission control unit 10A transmits the IP of each of a plurality of devices connected to the wireless LAN router device 20 indirectly or directly to the wired connection processing unit 30B of the wireless LAN router device 20. An inquiry signal for inquiring about the MAC address is transmitted to the address (step S12).

  Next, the wireless monitoring unit 10B monitors the wireless signal, receives a wireless response signal transmitted wirelessly with respect to the inquiry signal, and outputs the wireless response signal to the determination unit 10C (step S13). That is, 10 C of determination parts acquire the radio | wireless response signal transmitted by radio | wireless with respect to an inquiry signal (step S13). In addition, the determination unit 10C acquires a wired response signal transmitted in a wired manner with respect to the inquiry signal via the wired connection processing unit 21A (step S14).

  Next, the determination unit 10C sets a device corresponding to one IP address among a plurality of entries that do not contain information in the item “device type” as “device to be determined” (step S15). That is, one of the “determination target device candidate groups” corresponding to the entry group that does not contain information in the item “device type” is first set as the “determination target device”.

  Next, the determination unit 10C determines whether or not the wireless response signal wirelessly transmitted from the determination target device is acquired via the wireless monitoring unit 10B (step S16).

  When the wireless response signal wirelessly transmitted from the determination target device is received (step S15 YES), the determination unit 10C determines that the determination target device is a wireless device wirelessly connected to the wireless LAN bridge device 30 (step S17). ). That is, when the determination target device is the wireless device 40-1, the determination is made in this way. Then, the table management unit 11A updates the item “device type” of the entry corresponding to the determination target device in the network management table to “indirect (wireless)” as illustrated in FIG. 6 (step S18). This “indirect (wireless)” means a device that is wirelessly connected to the wireless LAN bridge device 30 under the wireless LAN bridge device 30. Then, the determination unit 10C determines whether or not all of the determination target device candidate groups have been determined as determination target devices (step S19). When any one of the determination target device candidate groups is not set as the determination target device (NO in step S19), the flow returns to step S15, and the determination is not yet set as the determination target device in the “determination target device candidate group”. The target device candidate is set as the next determination target device. On the other hand, if all of the determination target device candidate groups have already been determined as determination target devices (step S19 YES), the processing flow ends.

  When the wireless response signal wirelessly transmitted from the determination target device has not been received (NO in step S15), the determination unit 10C acquires the MAC address included in the wired response signal wired from the determination target device and the wireless monitoring unit 10B. It is determined whether or not the MAC address included in the received wireless response signal satisfies the “similarity criterion” (step S20).

  When it is determined that the similarity criterion is satisfied (step S20 YES), the determination unit 10C determines that the determination target device is the wireless LAN bridge device 30 (step S21). Then, the table management unit 11A updates the item “device type” of the entry corresponding to the determination target device in the network management table to “direct (wired)” as illustrated in FIG. 6 (step S22). This “direct (wired)” means the wireless LAN bridge device 30. Then, the flow proceeds to step S19.

  When it is determined that the similarity criterion is not satisfied (NO in step S20), the determination unit 10C is a device other than the wireless LAN bridge device 30 in which the determination target device is wired to the wireless LAN router device 20 or the wireless LAN bridge device 30. It is determined that there is (step S23). That is, when the determination target devices are the wired devices 50-1 and 50-2, the determination is made in this way. Then, the table management unit 11A updates the item “device type” of the entry corresponding to the determination target device in the network management table to “direct or indirect (wired)” (step S24). This “direct or indirect (wired)” means a device connected to the wireless LAN router device 20 or the wireless LAN bridge device 30 by wire. Then, the flow proceeds to step S19.

  In the above description, the information input to the item “device type” is “direct (wireless)”, “indirect (wireless)”, “direct (wired)”, and “direct or indirect (wired)”. However, it is not limited to this. For example, instead of “indirect (wireless)”, “subordinate to the wireless LAN bridge device (wireless)” may be used. Further, a “wireless LAN bridge device (wired)” may be used instead of “direct (wired)”. Instead of “direct or indirect (wired)”, “under the wireless LAN router device or under the wireless LAN bridge device (wired)” may be used.

  As described above, according to the second embodiment, the determination unit 10C in the management device 11 uses the wireless response signal transmission source device detected by the wireless monitoring unit 10B as a device (wirelessly connected to the wireless LAN bridge device 30). That is, it is determined that the device is the first type device.

  With the configuration of the management device 11, it is possible to grasp devices that are wirelessly connected to the wireless LAN bridge device 30. That is, it is possible to improve the accuracy of grasping one or a plurality of devices that are directly or indirectly connected to the wireless LAN router device 20 by wire and wireless.

  Further, in the management device 11, the determination unit 10C is not the transmission source device of the wireless response signal detected by the wireless monitoring unit 10B, and the MAC address included in the wireless response signal wirelessly transmitted from the first type device A transmission source device that has transmitted a wired response signal including a MAC address satisfying the similarity criterion via a wire is determined to be the wireless LAN bridge device 30.

  With the configuration of the management device 11, it is possible to grasp the wireless LAN bridge device 30 that is directly connected to the wireless LAN router device 20 by wire. That is, it is possible to improve the accuracy of grasping one or a plurality of devices that are directly or indirectly connected to the wireless LAN router device 20 by wire and wireless.

  Further, in the management device 11, the determination unit 10C is not the transmission source device of the wireless response signal detected by the wireless monitoring unit 10B, and the MAC address included in the wireless response signal wirelessly transmitted from the first type device Other than the wireless LAN bridge device 30, which is connected to the wireless LAN router device 20 or the wireless LAN bridge device 30 by a transmission source device that has transmitted a wired response signal including a MAC address that does not satisfy the similarity criterion between the wireless LAN router device 20 and the wireless LAN bridge device 30 It is determined that this is a device.

  With the configuration of the management device 11, it is possible to grasp devices other than the wireless LAN bridge device 30 that are wired to the wireless LAN router device 20 or the wireless LAN bridge device 30. That is, it is possible to improve the accuracy of grasping one or a plurality of devices that are directly or indirectly connected to the wireless LAN router device 20 by wire and wireless.

<Third Embodiment>
The third embodiment relates to an embodiment in which the management device monitors a radio signal including a channel other than the channel of the wireless LAN router device. The basic configuration of the communication network of the third embodiment is the same as that of the communication network 1 of the second embodiment, and will be described with reference to FIG.

  FIG. 7 is a block diagram illustrating an example of a management apparatus according to the third embodiment. In FIG. 7, the management device 12 further includes a radio channel control unit 12 </ b> A compared to the management device 11 of the second embodiment.

  The wireless channel control unit 12A outputs a control signal to the wireless monitoring unit 10B, whereby the wireless LAN router device 20 (that is, the wireless connection processing unit 21B) uses the wireless channel and the wireless channel used by the wireless monitoring unit 10B. Both of the channels used by the LAN bridge device 30 are monitored. That is, the radio channel control unit 12A causes the radio monitoring unit 10B to monitor radio signals including channels other than the channels used by the wireless LAN router device 20 (that is, the radio connection processing unit 21B).

  Thereby, even when the wireless LAN bridge device 30 uses a different channel from the wireless LAN router device 20, the wireless response signal can be reliably detected.

<Other embodiments>
The management devices 10, 11, and 12 of the first to third embodiments may each have the following hardware configuration. FIG. 8 is a diagram illustrating an example of a hardware configuration of the management apparatus.

  In FIG. 8, the management apparatus 100 includes a wireless circuit 101, a processor 102, and a memory 103.

  The wireless monitoring unit 10B is realized by the wireless circuit 101. Further, the transmission control unit 10A, the determination unit 10C, the table management unit 11A, and the radio channel control unit 12A are realized by the processor 102 reading and executing a program stored in the memory 103. The network management table may be stored in the memory 103.

DESCRIPTION OF SYMBOLS 1 Communication network 10, 11, 12 Management apparatus 10A Transmission control part 10B Wireless monitoring part 10C Determination part 11A Table management part 12A Wireless channel control part 20 Wireless LAN router apparatus 21 Communication interface part 21A Wired connection process part 21B Wireless connection process part 23 Display output unit 30 Wireless LAN bridge device 30A Wired connection processing unit 30B Wired connection processing unit 30C Wireless connection processing unit 40 Wireless device 40A Wireless connection processing unit 50 Wired device 50A Wired connection processing unit

Claims (7)

A management device that manages one or a plurality of devices that are directly or indirectly connected by wire and wireless to a wireless LAN router device configured to be connectable to a wireless LAN bridge device,
A transmission control unit that transmits an inquiry signal for inquiring a MAC address to an IP address of the one or more devices to the communication interface of the wireless LAN router device;
A wireless monitoring unit for monitoring wireless signals;
The determination target device wirelessly transmits to the wireless LAN bridge device based on whether the wireless monitoring unit detects a wireless response signal to the inquiry signal wirelessly transmitted from the determination target device of the one or more devices. A determination unit for determining whether or not the device is connected;
A management apparatus comprising: The determination unit determines that the transmission source device of the wireless response signal detected by the wireless monitoring unit is a first type device wirelessly connected to the wireless LAN bridge device;
The management apparatus according to claim 1. The determination unit is not a transmission source device of the wireless response signal detected by the wireless monitoring unit, and is similar to the MAC address included in the wireless response signal wirelessly transmitted from the first type device. A transmission source device that has transmitted a wired response signal including a satisfying MAC address via a wire is determined to be the wireless LAN bridge device.
The management device according to claim 2. The determination unit is not a transmission source device of the wireless response signal detected by the wireless monitoring unit, and is similar to the MAC address included in the wireless response signal wirelessly transmitted from the first type device. Determination that the transmission source device that has transmitted the wired response signal including the MAC address that is not satisfied via the wire is a device other than the wireless LAN bridge device that is wired to the wireless LAN router device or the wireless LAN bridge device. To
The management device according to claim 3. The wireless monitoring unit monitors both a wireless channel of the wireless LAN router device and a wireless channel of the wireless LAN bridge device;
The management apparatus of any one of Claim 1 to 4. Management method executed by a management device that manages one or a plurality of devices that are directly or indirectly connected by wire and wireless to a wireless LAN router device configured to be connectable to a wireless LAN bridge device Because
An inquiry signal for inquiring a MAC address to the IP address of the one or more devices is transmitted to the wired interface of the wireless LAN router device,
Monitor radio signals,
The determination target device is wirelessly connected to the wireless LAN bridge device based on the presence / absence of detection of a wireless response signal with respect to the inquiry signal wirelessly transmitted from the determination target device of the one or more devices in the monitoring. To determine whether the device is
Management method. For a management device that manages one or a plurality of devices connected directly or indirectly by wire and wireless to a wireless LAN router device configured to be connectable to a wireless LAN bridge device,
An inquiry signal for inquiring a MAC address to the IP address of the one or more devices is transmitted to the wired interface of the wireless LAN router device,
Monitor radio signals,
The determination target device is wirelessly connected to the wireless LAN bridge device based on the presence / absence of detection of a wireless response signal with respect to the inquiry signal wirelessly transmitted from the determination target device of the one or more devices in the monitoring. To determine whether the device is
Management program that executes processing.

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