KR102436942B1 - METHOD FOR MANAGING IoT DEVICE BY CONTROLLING PORT POWER OF PoE SWITCH AND SERVER USING THE SAME - Google Patents

Abstract

The present invention relates to an IoT equipment management method through port power control of a PoE switch and a server using the same. According to an embodiment of the present invention, a diagram showing a case in which each of a management server, PoE switches, and IoT devices (eg, CCTV, Sensor, etc.) are configured as a single IP class network. According to an embodiment of the present invention, in Figure 3, each of the management server, PoE switches, and IoT equipment (eg, CCTV, Sensor, etc.) is composed of a plurality of different IP class networks. Therefore, by using the PoE switches in the network configuration of the IoT devices, power can be reset by selectively controlling power for the specific IoT device having a problem.

Description

IoT device management method through port power control of PoE switch and server using the same

The present invention relates to a method of managing the power of an IoT device connected to a corresponding port to be remotely reset through port power control of a PoE switch, and a server using the same.

For each of the existing IoT devices that are configured and operated as a network, when a problem occurs in the process of operation, the administrator must directly move to the installation location of the IoT device and take action in order to respond.

However, there are many cases where problems occurring in IoT equipment can be solved by simply resetting the power of the IoT equipment.

Accordingly, there is a high need for a method capable of remotely resetting the power of each IoT device in operating a network of IoT devices.

An object of the present invention is to solve all of the above problems.

Another object of the present invention is to selectively control power only for a specific IoT device having a problem so that the power can be reset by using a PoE switch in the network configuration of the IoT device.

In addition, the present invention provides a method in which power can be controlled for a specific IoT device having a problem even when the management server manages only IP information about the IoT device, so that the management server efficiently manages IoT device information It serves another purpose to make it possible.

According to an aspect of the present invention, there is provided a method for managing IoT devices connected to a PoE switch through port power control of the PoE switch, wherein (a) each of the first IoT device to the nth IoT device includes the first cluster to the kth cluster, respectively. clustered as a plurality of devices, each of the first IoT device to the n-th IoT device has a first Power over Ethernet (PoE) switch to a k-th PoE switch corresponding to each of the first cluster to the k-th cluster, respectively. A management server that manages IP information of each of the first IoT device to the nth IoT device in a state that is connected to at least one of the ports and operates while receiving power to configure at least one IoT network , determining an abnormal specific IoT device among each of the first IoT device to the nth IoT device with reference to server-side clue data; (b) the management server refers to a database managing the first IP information to the n-th IP information corresponding to each of the first IoT device to the n-th IoT device, and uses a predetermined protocol to each of the IoT networks By transmitting the specific IP information corresponding to the specific IoT device to at least some of the check whether address information is stored, and (ii) if the specific IP information and the specific MAC address information are stored, refer to the specific MAC address information to further check the specific port information to which the specific IoT device is connected (iii) resetting the power of the specific IoT device through the specific port; and (c) the management server causes the specific PoE switch to which the specific IoT device is connected to transmit specific link status information and specific packet traffic status information of the specific port, and the transmitted specific link status information and the specific packet Checking whether the power of the specific IoT device has been successfully reset by referring to the traffic state information; is provided.

According to an example of the present invention, in the step (a), the server-side clue data is (i) a pth of each of the first data to the nth data transmitted from each of the first IoT device to the nth IoT device Data indicating that data has not been updated for a predetermined period of time, and (ii) time to check whether each of the first data to the n-th data is abnormal are referred to as a T_1 th time to a T_n th time, respectively, and the T_1 th time When it is assumed that data transmitted from each of the first IoT device to the n-th IoT device at a predetermined past point in time based on each of the time point to the time T_n are (1_t)-th data to (n_t)-th data, respectively, the first Data representing a case in which each of the data to the n-th data is compared with each of the (1_t)-th data to the (n_t)-th data, and the p-th data is changed from the (p_t)-th data by a predetermined threshold or more Including at least a part of, wherein the management server determines that the p-th data is abnormal with reference to the server-side clue data, and determines the p-th IoT device corresponding to the p-th data as the specific IoT device A method is provided, characterized in that

According to an example of the present invention, in step (a), the management server causes each of the first PoE switch to the kth PoE switch to include link state information and packet traffic state information of each of the ports included in each. is monitored, and there is an abnormality in link state information and packet traffic state information corresponding to a q-th port among ports included therein from a q-th PoE switch among the first PoE switch to the k-th PoE switch. When switch-side clue data indicating that the switch-side clue data includes IP information of the qth IoT device connected to the qth port and performing data transmission- is obtained, the management server There is provided a method comprising determining the qth IoT device as the specific IoT device by further referring to the clue data.

According to an example of the present invention, in step (a), each IP corresponding to the same IP class is assigned to each of the first PoE switch to the k-th PoE switch and each of the first IoT device to the n-th IoT device. Thus, in a state in which the IoT network is configured as a single IoT network, the management server managing IP information of each of the first IoT device to the n-th IoT device refers to the first IoT device by referring to the server-side clue data. Determine the abnormal specific IoT equipment among each of the equipment to the n-th IoT equipment, and in step (b), the management server includes: a first protocol as the predetermined protocol - the first protocol is of the same IP class A method is provided, comprising transmitting the specific IP information to the single IoT network using a protocol that supports request and response in a single network, including an Address Resolution Protocol (ARP).

According to an example of the present invention, in step (a), the IoT network is configured in plurality, and (i) one of the plurality of IoT networks includes at least one of the first cluster to the kth cluster, respectively. The r cluster corresponds to each of the IoT devices included in the r-th cluster and the r-th PoE switch corresponding to the r-th cluster, respectively, are given IPs corresponding to the same IP class, and (ii) a plurality of IoT devices Each of the IPs given to each network is characterized in that they are IPs corresponding to different IP classes, and in the step (b), the management server, the second protocol as the predetermined protocol - the second protocol A protocol that supports requests and responses even between a plurality of the IoT networks of the different IP classes, including at least some of PoE_SSDP (PoE_Simple Service Discovery Protocol) and WS-Discovery (Web Service Dynamic Discovery) - using A method is provided, characterized in that the specific IP information is transmitted to at least a part of each of the plurality of IoT networks.

According to an example of the present invention, in step (a), the IoT network is configured in plurality, and (i) one of the plurality of IoT networks includes at least one of the first cluster to the kth cluster, respectively. The r cluster corresponds to each of the IoT devices included in the r-th cluster and the r-th PoE switch corresponding to the r-th cluster, respectively, are given IPs corresponding to the same IP class, and (ii) a plurality of IoT devices Each of the IPs assigned to each network is characterized in that they are IPs corresponding to different IP classes, and in step (b), the first protocol is used so that requests and responses are made in the network corresponding to the same IP class. Supporting protocols include Address Resolution Protocol (ARP), and the second protocol is a protocol that supports requests and responses even between a plurality of IoT networks that are different IP classes, PoE_SSDP (PoE_Simple Service Discovery Protocol) and When including at least a part of WS-Discovery (Web Service Dynamic Discovery), the management server transmits the specific IP information using the predetermined protocol, the specific IP information using the first protocol is transmitted to the network corresponding to the same IP class among the IoT networks, and if it is determined that there is no response for a predetermined waiting time, the specific IP information is transmitted to the same IP class of the IoT networks using the second protocol There is provided a method characterized in that the transmission is performed to other networks except for the corresponding network.

According to an example of the present invention, in the step (a), each of the first PoE switch to the kth PoE switch, the first IoT device to the nth IoT device, respectively, the first cluster to the kth cluster After the connection is completed to correspond to each of the first PoE switch to the kth PoE switch, for each of the first PoE switch to the kth PoE switch, the first IoT equipment to the nth IoT connected to each Requesting a response to each of at least a portion of each of the devices, (i) extracting each of the obtained response IP information, and transmitting it to the database for management; (ii) a response MAC address corresponding to each of the response IP information In a state in which MAC ADDRESS TABLE is generated so that each of the information and the response port information is additionally extracted so that each of the extracted response MAC addresses and the extracted response port information correspond to each other, the management server, the server side clue data with reference to determining the abnormal specific IoT device among each of the first IoT device to the nth IoT device, and in step (b), each of the first PoE switch to the kth PoE switch comprises: When the specific IP information is confirmed, the specific port to which the specific IoT device corresponding to the specific IP information is connected is provided with reference to the response IP information and the MAC ADDRESS TABLE stored therein do.

According to an example of the present invention, in step (b), the management server causes at least some of the first PoE switch to the kth PoE switch to further check the manufacturer identification code part included in the specific MAC address information. There is provided a method characterized in that the power of the specific IoT device corresponding to the specific MAC address information is reset.

According to an example of the present invention, the management server is configured to perform the first PoE through a predetermined management program, the management program being installed in the management server or installed in each of the first PoE switch to the kth PoE switch. switch to each of the kth PoE switches, wherein the management program determines switch management information including information on at least one PoE switch among each of the first PoE switch to the kth PoE switch. (i) when the management program is installed in the management server, the management program is executed on the management server so that the management server acquires the switch management information, (ii) the When a management program is installed in each of the first PoE switch to the kth PoE switch and operates as a web server, when the management server connects to at least one of each of the first PoE switch to the kth PoE switch, the The method is provided, wherein the management program is executed in at least one of the first PoE switch to the kth PoE switch, respectively, and the management server receives the switch management information as a client.

According to another aspect of the present invention, there is provided a management server for managing IoT equipment connected to a PoE switch through port power control of the PoE switch, comprising: at least one memory for storing instructions; and at least one processor configured to execute the instructions; Each of the equipment to the nth IoT equipment is connected to at least one port among a plurality of ports of each of the first Power over Ethernet (PoE) switch to the kth PoE switch corresponding to each of the first cluster to the kth cluster. a process of determining an abnormal specific IoT device from each of the first IoT device to the nth IoT device with reference to server-side clue data in a state in which at least one IoT network is configured by being connected and receiving power; (II) referring to a database managing first IP information to n-th IP information corresponding to each of the first IoT device to the n-th IoT device, and using a predetermined protocol By transmitting specific IP information corresponding to the IoT device, at least some of the first PoE switch to the k-th PoE switch can (i) store the specific IP information and specific MAC address information of the specific IoT device corresponding thereto. (ii) if the specific IP information and the specific MAC address information are stored, refer to the specific MAC address information to further check the specific port information to which the specific IoT device is connected, (iii) ) a process of resetting the power of the specific IoT device through the specific port; and (III) cause the specific PoE switch to which the specific IoT device is connected to transmit specific link status information and specific packet traffic status information of the specific port, and refer to the transmitted specific link status information and the specific packet traffic status information a process of confirming whether the power of the specific IoT device has been successfully reset; A management server that performs the

According to an example of the present invention, in the process (I), the server-side clue data is: (i) a pth of each of the first data to the nth data transmitted from each of the first IoT device to the nth IoT device Data indicating that data has not been updated for a predetermined period of time, and (ii) time to check whether each of the first data to the n-th data is abnormal are referred to as a T_1 th time to a T_n th time, respectively, and the T_1 th time When it is assumed that data transmitted from each of the first IoT device to the n-th IoT device at a predetermined past point in time based on each of the time point to the time T_n are (1_t)-th data to (n_t)-th data, respectively, the first Data representing a case in which each of the data to the n-th data is compared with each of the (1_t)-th data to the (n_t)-th data, and the p-th data is changed from the (p_t)-th data by a predetermined threshold or more , wherein the processor determines that the p-th data is abnormal with reference to the server-side clue data, and determines the p-th IoT device corresponding to the p-th data as the specific IoT device. A management server is provided.

According to an example of the present invention, in the process (I), the processor causes each of the first PoE switch to the k-th PoE switch to obtain link state information and packet traffic state information of each of the ports included in each. monitoring, and detecting that there is an abnormality in the link state information and packet traffic state information corresponding to the q-th port among the ports included therein from the q-th PoE switch among the first PoE switch to the k-th PoE switch When switch-side clue data indicating data - the switch-side clue data includes IP information of a q-th IoT device connected to the q-th port and performing data transmission- is obtained, the processor performs the switch-side clue data With further reference to , there is provided a management server, characterized in that the q-th IoT device is determined as the specific IoT device.

According to an example of the present invention, in the process (I), each IP corresponding to the same IP class is assigned to each of the first PoE switch to the k-th PoE switch and each of the first IoT device to the n-th IoT device. Thus, in a state in which the IoT network is configured as a single IoT network, the processor managing the IP information of each of the first IoT device to the n-th IoT device refers to the server-side clue data, and the first IoT device to determine the abnormal specific IoT device among each of the n-th IoT devices, and in the (II) process, the processor includes: a first protocol as the predetermined protocol, wherein the first protocol is the single network of the same IP class A management server is provided, characterized in that it transmits the specific IP information to the single IoT network using - as a protocol supporting the request and response in the ARP (Address Resolution Protocol).

According to an example of the present invention, in the process (I), the IoT network is configured in plurality, and (i) one of the plurality of IoT networks includes an rth that is at least one of the first cluster to the kth cluster, respectively. The cluster corresponds to each of the IoT devices included in each of the r-th cluster and the r-th PoE switch corresponding to the r-th cluster are given IPs corresponding to the same IP class, respectively, (ii) a plurality of the IoT networks Each of the IPs assigned to each is characterized in that they are IPs corresponding to different IP classes, and in the process (II), the processor includes: a second protocol as the predetermined protocol - the second protocol is each other A protocol that supports requests and responses to be made even between a plurality of the IoT networks of different IP classes, including at least some of PoE_SSDP (PoE_Simple Service Discovery Protocol) and WS-Discovery (Web Service Dynamic Discovery). A management server is provided, which transmits the specific IP information to at least a part of each of the IoT networks.

According to an example of the present invention, in the process (I), the IoT network is configured in plurality, and (i) one of the plurality of IoT networks includes an rth that is at least one of the first cluster to the kth cluster, respectively. The cluster corresponds to each of the IoT devices included in each of the r-th cluster and the r-th PoE switch corresponding to the r-th cluster are given IPs corresponding to the same IP class, respectively, (ii) a plurality of the IoT networks Each of the IPs assigned to each is characterized in that they are IPs corresponding to different IP classes, and in the process (II), the first protocol supports requests and responses in the network corresponding to the same IP class. As a protocol that includes an Address Resolution Protocol (ARP), the second protocol is a protocol that supports requests and responses between a plurality of IoT networks that are different IP classes, and PoE_SSDP (PoE_Simple Service Discovery Protocol) and WS - When it includes at least a part of Discovery (Web Service Dynamic Discovery), when transmitting the specific IP information using the predetermined protocol, the processor transmits the specific IP information using the first protocol. After transmitting to the network corresponding to the same IP class among IoT networks, if it is determined that there is no response for a predetermined waiting time, the specific IP information is transmitted to the network corresponding to the same IP class among the IoT networks using the second protocol There is provided a management server, characterized in that the transmission to other networks other than the network.

According to an example of the present invention, in the process (I), each of the first PoE switch to the k-th PoE switch includes the first IoT device to the n-th IoT device, respectively, the first cluster to the k-th cluster After the connection is completed to correspond to each of the first PoE switch to the kth PoE switch, for each of the first PoE switch to the kth PoE switch, the first IoT equipment to the nth IoT connected to each Requesting a response to each of at least a portion of each of the devices, (i) extracting each of the obtained response IP information, and transmitting it to the database for management; (ii) a response MAC address corresponding to each of the response IP information In a state in which MAC ADDRESS TABLE is generated so that information and response port information are additionally extracted so that each of the extracted response MAC addresses and each of the extracted response port information correspond to each other, the processor receives the server-side clue data It is characterized in that the specific IoT equipment is determined abnormal among each of the first IoT equipment to the n-th IoT equipment with reference, and in the process (II), each of the first PoE switch to the kth PoE switch includes: When specific IP information is confirmed, the management server, characterized in that the specific port to which the specific IoT device corresponding to the specific IP information is connected, is provided by referring to the response IP information and the MAC ADDRESS TABLE stored therein do.

According to an example of the present invention, in the process (II), the processor causes at least some of the first PoE switch to the kth PoE switch to further confirm the manufacturer identification code part included in the specific MAC address information. Thus, there is provided a management server, characterized in that the power of the specific IoT device corresponding to the specific MAC address information is reset.

According to an example of the present invention, the processor, the first PoE switch through a predetermined management program, the management program is installed in the management server, or installed in each of the first PoE switch to the kth PoE switch to manage each of the k-th PoE switches, wherein the management program generates a predetermined switch management information including information on at least one PoE switch among each of the first PoE switch to the k-th PoE switch. provided through an interface, wherein (i) when the management program is installed in the management server, the management program is executed on the management server so that the processor acquires the switch management information, (ii) the management program When installed in each of the first PoE switch to the kth PoE switch and operating as a web server, when the processor connects to at least one of each of the first PoE switch to the kth PoE switch, the first PoE switch The management server is provided, characterized in that the management program is executed in at least one of a switch to each of the kth PoE switches, the management server receives the switch management information as a client, and the processor acquires the switch management information do.

According to the present invention, by using a PoE switch in the network configuration of the IoT device, it is possible to selectively control power for a specific IoT device having a problem so that the power is reset.

In addition, the present invention provides a method in which power can be controlled for a specific IoT device having a problem even when the management server manages only IP information about the IoT device, so that the management server efficiently manages IoT device information It has the effect of making it possible.

1 is a schematic diagram of IoT devices (eg, CCTV, Sensor, etc.) configuring a network through each of a plurality of PoE switches according to an embodiment of the present invention.
2 is a diagram schematically illustrating a case where each of a management server, PoE switches, and IoT devices (eg, CCTV, Sensor, etc.) is configured as a single IP class network according to an embodiment of the present invention.
3 is a diagram schematically illustrating a case in which each of a management server, PoE switches, and IoT devices (eg, CCTV, Sensor, etc.) is configured with a plurality of different IP class networks according to an embodiment of the present invention.
4 is a diagram schematically illustrating an interface of a predetermined NST PoE switch management manager (NPM) for managing detailed settings of a PoE switch according to an embodiment of the present invention.
5 is a diagram schematically showing information of MAC ADDRESS TABLE generated by a PoE switch according to an embodiment of the present invention.
6 is a diagram schematically showing a structure in which MAC address information includes a vendor code (OUI) and a serial number for each device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0016] Reference is made to the accompanying drawings, which show by way of illustration specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein with respect to one embodiment may be implemented in other embodiments without departing from the spirit and scope of the invention. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily practice the present invention.

1 is a schematic diagram in which IoT devices (eg, CCTV, Sensor, etc.) configure a network through a plurality of PoE switches according to an embodiment of the present invention.

Referring to FIG. 1 , IoT devices may be classified according to at least one cluster as needed, and may be connected to each PoE switch corresponding to each cluster.

In this case, the PoE switch is characterized in that it can supply and control power through each of the ports included therein. By connecting IoT devices using such a PoE switch, data transmission and power control of each IoT device can be simultaneously performed by the PoE switch. In addition, below, it will be described that the equipment connected to the PoE switch is a CCTV equipment and/or a sensor, and the data transmitted on the network is image data, but is not limited thereto, and is connected to the PoE switch according to the conditions of the invention. Various IoT devices in which a network can be configured may be adopted and used. Of course, it will be natural that data transmitted over the network may be other types of data than image data, depending on the type of IoT device.

Next, a predetermined management server may manage each PoE switch and data transmitted over the network through each of the PoE switches. For reference, in FIG. 1, since the video data transmitted through the CCTV equipment is managed, the name of VMS (Video Management System) is used, but as described above, it is not limited thereto. will use it.

In the network configured as described above, the management server may manage IP information given to each IoT device. In this case, each IP information given to each IoT device may be stored in a predetermined database, which may be included in the management server, but may be configured separately from the management server. In addition, when it is confirmed that a problem has occurred in the specific image data while the image data transmitted from each IoT device is monitored, the specific IoT device that transmitted the specific image data may be determined with reference to IP information of the database.

In this case, as an example of the invention, whether or not a problem has occurred in the image data transmitted from the IoT device is determined by (i) determining whether the corresponding image data has not been updated for a predetermined time, or (ii) converting the corresponding image data to a predetermined value. It may be determined by determining whether data has changed by more than a predetermined threshold value by comparing it with past image data acquired at a past time point. In the present invention, data indicating that the corresponding image data corresponds to at least some of the above conditions will be called "server-side clue data", and the management server refers to the server-side clue data and the corresponding image data has a problem By judging directly, it is possible to determine an abnormal specific IoT device.

In addition, as another example of the invention, when the management server obtains from a specific PoE switch among the PoE switches on the network that there is an abnormality in link status information and packet traffic status information corresponding to a specific port included therein, it is referred to. In this way, the IoT device connected to the specific port can be determined as the specific IoT device. In this case, the PoE switch monitors the link status information and packet traffic status information for each of the ports included therein to determine whether the status of the specific port is abnormal. can be checked

In the present invention, data indicating that there is an abnormality in link status information and packet traffic status information of a specific port will be called “switch-side clue data”, and the management server refers to the switch-side clue data to control the specific PoE switch. By determining that there is a problem in a specific port, it is possible to determine an abnormal specific IoT device connected to the specific port.

When a specific IoT device is determined through the above process, the management server may cause a specific PoE switch to which the specific IoT device is connected to perform port power control through a predetermined NST PoE switch management manager (NPM). In this case, the NST PoE switch management manager (NPM) may be installed in a management server, or may be installed in each PoE switch to allow the management server to access the network through a network, which may vary depending on the implementation conditions of the invention.

Hereinafter, a specific embodiment of the present invention will be described with reference to FIGS. 2 and 3 .

2 is a diagram illustrating a case in which each of the management server, PoE switches, and IoT devices (eg, CCTV, Sensor, etc.) is configured as a single IP class network according to an embodiment of the present invention, and FIG. 3 is a diagram of the present invention. A diagram illustrating a case in which each of the management server, PoE switches, and IoT devices (eg, CCTV, Sensor, etc.) is configured with a plurality of different IP class networks according to an embodiment.

First, referring to FIG. 2, each of the management server, a plurality of PoE switches (represented in the form of a black box having a plurality of ports connected from the management server through an L2 switch) and IoT equipment may be configured as a network of the same IP class. , an example in which an IP band of 192.1.1.xxx is used is shown in FIG. 2 . In addition, when classifying IoT devices into a plurality of clusters, each of a plurality of PoE switches can be used to correspond to each cluster, and since the corresponding network is a network of the same IP class, a Layer 2 switch is installed between each of the PoE switches and the server may be further used.

In such a state, when a specific IoT device that requires a response is determined as described above, the management server checks the specific PoE switch to which the specific IoT device is connected through the NST PoE switch management manager (NPM), and causes the specific PoE switch to By controlling the power of a specific port connected to a specific IoT device, the power of the specific IoT device can be reset. Here, the NST PoE switch management manager (NPM) may be operated including the PoE switch manager web program, and may obtain SNMP, Rmon, etc. from each IoT device. Here, SNMP is a protocol for tracking the basic status of network equipment, and Rmon is an extended form of SNMP and is a protocol for enabling more detailed analysis through traffic information transmission.

To this end, each PoE switch may obtain and store information on each IP information of each connected IoT device, each MAC address information of each IoT device, and each port to which each IoT device is connected in advance. The process is as follows.

First, the PoE switch uses a function that allows a predetermined request-response (eg, WebServer or Common Gateway Interface (CGI) and the home_login function with API) to use all devices (IoT devices) connected to the PoE switch. each), extracts the IPs whose responses are confirmed from among the available IP bands available in the PoE switch as actual IPs, and transmits information on the extracted actual IPs to the management server in the future to be managed. prepare to be In this process, the PoE switch may generate a MAC ADDRESS TABLE by acquiring the MAC address of each device connected to each of the ports included therein.

However, the MAC ADDRESS TABLE created through the above process requires an additional purification process. This is because, not only IoT devices but also other switches can be connected to each of the ports included in the PoE switch. This is because the first MAC ADDRESS TABLE can be created as the other switch and a plurality of IoT devices under the other switch are simultaneously connected. In this case, since the PoE switch cannot control the power of IoT devices connected to other switches, it is necessary to exclude them.

Accordingly, the MAC ADDRESS TABLE may be refined to include only MAC address information of the IoT device that is finally directly connected to the corresponding PoE switch. (That is, it is considered valid only when one MAC address is mapped to one port)

Referring to the MAC ADDRESS TABLE created through the above process and information on the actual IP used, the specific PoE switch to which the specific IoT device is connected checks the specific port to which the specific IoT device is connected, and controls the power of the specific port. It can be controlled so that the power of a specific IoT device is reset.

Then, the management server, based on the specific IP information of the specific IoT device in which the problem has occurred, performs a predetermined first protocol so that the specific PoE switch to which the specific IoT device is connected resets the power to the specific IoT device. Can be used. As an example, the first protocol may be an Address Resolution Protocol (ARP) in which requests and responses are made within the same IP class network.

Specifically, the management server transmits specific IP address information of a specific IoT device in which a problem occurs to the same IP class network using ARP, thereby causing PoE switches to a specific MAC corresponding to specific IP address information of a specific IoT device. The request may be made to confirm the address information and at the same time perform power control for the specific IoT device, thereby requesting to reset the power corresponding to the specific IoT device. And, in response to the request, the specific PoE switch to which the specific IoT device is connected refers to the IP information of the IoT devices connected thereto and the information of the MAC ADDRESS TABLE to refer to the specific MAC address information of the specific IoT device and the specific port corresponding thereto (that is, The port to which a specific IoT device is connected) can be checked, and power control for the specific port can be performed to reset the power of the specific IoT device. In addition, after the power of a specific IoT device is reset, the specific PoE switch transmits specific link status information and specific packet traffic status information of a specific port to which a specific IoT device is connected to the management server to check whether the reset is successful or not. you can make sure In some cases, at least a portion of specific port information and specific MAC address information of a specific IoT device may be transmitted to the management server to allow the management server to perform predetermined management.

Next, referring to FIG. 3 , each of the management server, PoE switch, and IoT device may be configured as a network of a different IP class by extending its range. In FIG. 3, an IP band of 192.1.1.xxx and 192.1. An example divided into each IP band of 2.xxx is shown.

In this case, a Layer 3 switch or router may be used to establish a connection between each of the PoE switches and the server.

For reference, even when a network of a single IP class is configured as shown in FIG. 2 , the network can be divided using virtual LAN (VLAN) technology, etc. In this case, each of the divided networks is divided into different networks. Since it can function, in this case, the configuration as shown in FIG. 3 can be similarly applied.

In addition, as shown in FIG. 3 , in order to transmit a request and a response packet between the management server and the PoE switches in a state in which different IP class networks are configured, the request passes through a Layer 3 switch or router, unlike the first protocol, and a second predetermined protocol through which a response packet may be transmitted may be used. That is, since the first protocol is assumed to be used in a single IP class network, there is a possibility that it may not operate normally in the network as shown in FIG. 3 . Accordingly, a predetermined second protocol different from the first protocol may be used in consideration of the characteristics of the network.

For example, ARP, which is an example of the first protocol, uses a broadcasting method in transmitting a packet. In this case, there is a technical limit in that it cannot pass through a Layer 3 switch or router. Therefore, another protocol capable of solving such a problem may be used as the second protocol. As an example of the second protocol, PoE_SSDP or WS-Discovery may be used.

A method of resetting the power of a specific IoT device having a problem using the second protocol is similar to the case of using the first protocol above, so a detailed description thereof will be omitted.

In this case, as another example of the invention, the network configuration of FIGS. 2 and 3 may be mixed. That is, in addition to a network corresponding to a single IP class, a network to which IPs corresponding to an IP class different from the network corresponding to the single IP class are provided is further extended, so that each of a plurality of networks may be connected. In order to be able to respond to this case as well, the first protocol and the second protocol may be used sequentially. That is, using ARP, an example of the first protocol, the specific IP information is transmitted to the network corresponding to the same IP class to request a response, and if the response is not confirmed for a predetermined time, the second protocol Using PoE_SSDP or WS-Discovery, which is an example, a response may be requested by transmitting the specific IP information to another network except for the network corresponding to the same IP class.

Referring to FIG. 3 , the NST PoE switch management manager (NPM) may typically install one in the center to perform centralized management for each IoT device belonging to the entire network, but is not limited thereto. Each of the plurality of NST PoE switch management managers (NPMs) may be installed to correspond to each PoE switch as shown in FIG. 2 . In the former case, as mentioned above, when a response to the specific IP information is not confirmed only by the first protocol, the response must be requested by transmitting the specific IP information using the second protocol, but in the latter In this case, since the NST PoE switch management manager (NPM) exists in each network, the specific IP information may be transmitted using only the first protocol to request a response.

Next, the management program for the management server to manage the PoE switch may provide switch management information including information on the corresponding PoE switch through a predetermined HTTP-based interface. FIG. 4 shows an example of such an interface. is shown as When such a management program (i) is installed in the management server, the management program is executed on the management server so that the management server acquires the switch management information, and (ii) is installed in the PoE switch and the PoE switch is installed on the Web When operating as a server, when the management server connects to the PoE switch, a management program is executed in the PoE switch so that the management server can receive the switch management information as a client.

And, FIG. 5 schematically shows a state in which information of the MAC ADDRESS TABLE as described above is provided based on the interface of FIG. 4 . Referring to FIG. 5, the MAC ADDRESS TABLE includes ports included in the PoE switch. It can be seen that information on each of the devices and MAC address information of each IoT device connected to each port are stored in correspondence with each other.

Also, FIG. 6 shows a structure in which MAC address information includes a vendor identification code part (Vender Code (OUI)) and a serial number part for each individual device (Serial Number). In particular, the information of the manufacturer identification code part is pre-allocated by IEEE, which is an organization that manages MAC address information, and its value is fixed and does not change.

Therefore, as another example of the invention, the PoE switch additionally checks the information of the manufacturer's identification code part (the first 3 bytes (24 bits) of the MAC address) in the MAC address information of IoT devices connected to the ports included therein, The power control and power reset management method as described above may be applied only to IoT equipment corresponding to MAC address information including an identification code corresponding to a specific manufacturer.

The embodiments according to the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the computer software field. Examples of the computer-readable recording medium include hard disks, magnetic media such as floppy disks and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and magneto-optical media such as floppy disks. , and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform processing according to the present invention, and vice versa.

In the above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , those of ordinary skill in the art to which the present invention pertains can devise various modifications and variations from these descriptions.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and not only the claims described below, but also all modifications equivalently or equivalently to the claims described below belong to the scope of the spirit of the present invention. will do it

Claims (18)

A method of managing IoT devices connected to a PoE switch through port power control of the PoE switch, the method comprising:
(a) Each of the first IoT devices to the nth IoT devices is clustered into a first cluster to a kth cluster, respectively, and each of the first IoT devices to the nth IoT devices includes the first cluster to the kth cluster, respectively The first Power over Ethernet (PoE) switch corresponding to the to the kth PoE switch is connected to at least one port among a plurality of ports and operates while receiving power to configure at least one IoT network, The management server managing the IP information of each of the first IoT device to the n-th IoT device determines an abnormal specific IoT device from each of the first IoT device to the n-th IoT device with reference to server-side clue data step;
(b) the management server refers to a database managing the first IP information to the n-th IP information corresponding to each of the first IoT device to the n-th IoT device, and uses a predetermined protocol to each of the IoT networks By transmitting specific IP information corresponding to the specific IoT device to at least some of the check whether address information is stored, and (ii) if the specific IP information and the specific MAC address information are stored, refer to the specific MAC address information to further check the specific port information to which the specific IoT device is connected (iii) resetting the power of the specific IoT device through the specific port; and
(c) the management server causes the specific PoE switch to which the specific IoT device is connected to transmit the specific link status information and specific packet traffic status information of the specific port, and the transmitted specific link status information and the specific packet traffic checking whether the power of the specific IoT device has been successfully reset by referring to the status information;
How to include. According to claim 1,
In step (a),
The server-side clue data may include: (i) data indicating that p-th data among each of the first data to the n-th data transmitted from each of the first IoT device to the n-th IoT device has not been updated for a predetermined time; and (ii) a time point for checking whether each of the first data to the n-th data is abnormal is referred to as a T_1 th time to a T_n th time, respectively, and at a predetermined past time based on each of the T_1 th to the T_n time points. When the data transmitted from each of the first IoT device to the n-th IoT device is each of (1_t)-th data to (n_t)-th data, each of the first data to the n-th data is the (1_t)-th data to compared with each of the (n_t)-th data, including at least a portion of data indicating a case in which the p-th data is changed from the (p_t)-th data by a predetermined threshold or more,
The method, characterized in that the management server determines the p-th data to be abnormal with reference to the server-side clue data, and determines the p-th IoT device corresponding to the p-th data as the specific IoT device. According to claim 1,
In step (a),
wherein the management server causes each of the first PoE switch to the kth PoE switch to monitor link state information and packet traffic state information of each port included in each,
Switch-side clue data, which is data indicating that there is an abnormality in link state information and packet traffic state information corresponding to the q-th port among ports included in the q-th PoE switch among the first PoE switch to the k-th PoE switch - When the switch-side clue data includes IP information of a q-th IoT device connected to the q-th port and performing data transmission - is obtained, the management server further refers to the switch-side clue data, and the Method characterized in that determining the qth IoT device as the specific IoT device. According to claim 1,
In step (a),
Each of the first PoE switch to the k-th PoE switch and each of the first IoT device to the n-th IoT device are each assigned an IP corresponding to the same IP class, so that the IoT network is configured as a single IoT network, The management server managing the IP information of each of the first IoT device to the n-th IoT device refers to the server-side clue data, and the specific IoT device abnormal among the first IoT device to the n-th IoT device, respectively to decide,
In step (b),
The management server includes a first protocol as the predetermined protocol, wherein the first protocol is a protocol that supports requests and responses to be made in the single IoT network of the same IP class, and includes an Address Resolution Protocol (ARP). using to transmit the specific IP information to the single IoT network. According to claim 1,
In step (a),
The IoT network is configured in plurality, and (i) an r-th cluster that is at least one of each of the first cluster to the k-th cluster corresponds to one of the plurality of IoT networks, and is included in each of the r-th clusters. Each of the IoT devices and the r-th PoE switch corresponding to the r-th cluster are given IPs corresponding to the same IP class, and (ii) each of the IPs assigned to each of the plurality of IoT networks is of a different IP class It is characterized in that it is an IP corresponding to
In step (b),
The management server includes a second protocol as the predetermined protocol. The second protocol is a protocol that supports requests and responses even between a plurality of IoT networks that are different IP classes, and includes a PoE_SSDP (PoE_Simple Service Discovery Protocol) and A method of transmitting the specific IP information to at least a part of each of the plurality of IoT networks using - including at least a part of Web Service Dynamic Discovery (WS-Discovery). According to claim 1,
In step (a),
The IoT network is configured in plurality, and (i) an r-th cluster that is at least one of each of the first cluster to the k-th cluster corresponds to one of the plurality of IoT networks, and is included in each of the r-th clusters. Each of the IoT devices and the r-th PoE switch corresponding to the r-th cluster are given IPs corresponding to the same IP class, and (ii) each of the IPs assigned to each of the plurality of IoT networks is of a different IP class It is characterized in that it is an IP corresponding to
In step (b),
The first protocol is a protocol that supports requests and responses to be made in the network corresponding to the same IP class, and includes an Address Resolution Protocol (ARP), and the second protocol is also between a plurality of the IoT networks of the different IP classes. As a protocol supporting the request and response, when it includes at least a part of PoE_Simple Service Discovery Protocol (PoE_SSDP) and Web Service Dynamic Discovery (WS-Discovery), the management server uses the predetermined protocol to In transmitting specific IP information, when it is determined that there is no response for a predetermined waiting time after transmitting the specific IP information to a network corresponding to the same IP class among the IoT networks using the first protocol, the second 2 Using a protocol, the specific IP information is transmitted to other networks except for networks corresponding to the same IP class among the IoT networks. According to claim 1,
In step (a),
Each of the first PoE switch to the k-th PoE switch is configured such that the first IoT device to the n-th IoT device are respectively connected to the first PoE switch to the k-th PoE switch for each of the first cluster to the k-th cluster. After the connection is completed so as to correspond to each other, by requesting a response from at least a portion of each of the first IoT device to the n-th IoT device connected to each of the first PoE switch to the k-th PoE switch, ( i) each of the obtained response IP information is extracted and transmitted to the database so that it can be managed; In a state in which MAC ADDRESS TABLE is generated so that each of the response MAC addresses and each of the extracted response port information correspond to each other, the management server refers to the server-side clue data, and the first IoT device to the n-th IoT device Characterized in determining the specific IoT equipment that is abnormal among each,
In step (b),
In each of the first PoE switch to the kth PoE switch, when the specific IP information is confirmed, the specific IoT device corresponding to the specific IP information is displayed with reference to the response IP information stored in each and the MAC ADDRESS TABLE. A method, characterized in that identifying the specific port connected. According to claim 1,
In step (b),
The management server causes at least some of the first PoE switch to the kth PoE switch to additionally check the manufacturer identification code part included in the specific MAC address information, so that the specific IoT corresponding to the specific MAC address information A method characterized in that the power of the equipment is reset. According to claim 1,
The management server, the first PoE switch to the kth PoE switch through a predetermined management program, the management program is installed in the management server, or installed in each of the first PoE switch to the kth PoE switch Characterized in managing each,
The management program provides switch management information including information on at least one PoE switch among each of the first PoE switch to the kth PoE switch through a predetermined interface, wherein (i) the management program manages the When installed in a server, the management program is executed on the management server so that the management server obtains the switch management information, and (ii) the management program is installed in each of the first PoE switch to the kth PoE switch. When installed and operating as a web server, when the management server connects to at least one of each of the first PoE switch to the kth PoE switch, at least one of the first PoE switch to the kth PoE switch A management program is executed so that the management server receives the switch management information as a client. A management server that manages IoT devices connected to a PoE switch through the port power control of the PoE switch,
at least one memory for storing instructions; and
at least one processor configured to execute the instructions;
The processor includes (I) each of the first IoT equipment to the n-th IoT equipment is clustered into each of the first cluster to the k-th cluster, and each of the first IoT equipment to the n-th IoT equipment includes the first cluster to the first cluster. The first Power over Ethernet (PoE) switch corresponding to each of the k-th cluster to the k-th PoE switch respectively are connected to at least one port among a plurality of ports to receive power and operate to configure at least one IoT network, in the present state, a process of determining an abnormal specific IoT device from each of the first IoT device to the nth IoT device with reference to server-side clue data; (II) referring to a database managing first IP information to n-th IP information corresponding to each of the first IoT device to the n-th IoT device, and using a predetermined protocol By transmitting specific IP information corresponding to the IoT device, at least some of the first PoE switch to the k-th PoE switch can (i) store the specific IP information and specific MAC address information of the specific IoT device corresponding thereto. (ii) if the specific IP information and the specific MAC address information are stored, refer to the specific MAC address information to further check the specific port information to which the specific IoT device is connected, (iii) ) a process of resetting the power of the specific IoT device through the specific port; and (III) cause the specific PoE switch to which the specific IoT device is connected to transmit specific link status information and specific packet traffic status information of the specific port, and refer to the transmitted specific link status information and the specific packet traffic status information a process of confirming whether the power of the specific IoT device has been successfully reset; management server that does 11. The method of claim 10,
In the process (I) above,
The server-side clue data may include: (i) data indicating that p-th data among each of the first data to the n-th data transmitted from each of the first IoT device to the n-th IoT device has not been updated for a predetermined time; and (ii) a time point for checking whether each of the first data to the n-th data is abnormal is referred to as a T_1 th time to a T_n th time, respectively, and at a predetermined past time based on each of the T_1 th to the T_n time points. When the data transmitted from each of the first IoT device to the n-th IoT device is each of (1_t)-th data to (n_t)-th data, each of the first data to the n-th data is the (1_t)-th data to compared with each of the (n_t)-th data, including at least a portion of data indicating a case in which the p-th data is changed from the (p_t)-th data by a predetermined threshold or more,
The processor determines the p-th data to be abnormal with reference to the server-side clue data, and determines the p-th IoT device corresponding to the p-th data as the specific IoT device. 11. The method of claim 10,
In the process (I) above,
The processor is configured to cause each of the first PoE switch to the kth PoE switch to monitor link state information and packet traffic state information of each port included in each,
Switch-side clue data, which is data indicating that there is an abnormality in link state information and packet traffic state information corresponding to the q-th port among ports included in the q-th PoE switch among the first PoE switch to the k-th PoE switch - When the switch-side clue data includes IP information of a q-th IoT device connected to the q-th port and performing data transmission - is obtained, the processor further refers to the switch-side clue data, and the second q Management server, characterized in that the IoT device is determined as the specific IoT device. 11. The method of claim 10,
In the process (I) above,
Each of the first PoE switch to the k-th PoE switch and each of the first IoT device to the n-th IoT device are each assigned an IP corresponding to the same IP class, so that the IoT network is configured as a single IoT network, The processor managing the IP information of each of the first IoT device to the n-th IoT device refers to the server-side clue data and selects the abnormal specific IoT device from each of the first IoT device to the n-th IoT device decide,
In the process (II) above,
The processor performs a first protocol as the predetermined protocol, wherein the first protocol is a protocol that supports requests and responses to be made in the single IoT network of the same IP class, including an Address Resolution Protocol (ARP). A management server, characterized in that it transmits the specific IP information to the single IoT network using 11. The method of claim 10,
In the process (I) above,
The IoT network is configured in plurality, and (i) an r-th cluster, which is at least one of the first cluster to the k-th cluster, corresponds to one of the plurality of IoT networks, and the IoT included in each of the r-th clusters Each of the devices and the r-th PoE switch corresponding to the r-th cluster is given an IP corresponding to the same IP class, and (ii) each of the IPs assigned to each of the plurality of IoT networks is in a different IP class. It is characterized by the corresponding IPs,
In the process (II) above,
The processor may include a second protocol as the predetermined protocol. The second protocol is a protocol that supports requests and responses even between a plurality of IoT networks that are different IP classes. PoE_SSDP (PoE_Simple Service Discovery Protocol) and WS -Including at least a part of Discovery (Web Service Dynamic Discovery) - Management server, characterized in that for transmitting the specific IP information to at least a part of each of the plurality of IoT networks. 11. The method of claim 10,
In the process (I) above,
The IoT network is configured in plurality, and (i) an r-th cluster, which is at least one of the first cluster to the k-th cluster, corresponds to one of the plurality of IoT networks, and the IoT included in each of the r-th clusters Each of the devices and the r-th PoE switch corresponding to the r-th cluster is given an IP corresponding to the same IP class, and (ii) each of the IPs assigned to each of the plurality of IoT networks is in a different IP class. It is characterized by the corresponding IPs,
In the process (II) above,
The first protocol is a protocol that supports requests and responses to be made in the network corresponding to the same IP class, and includes an Address Resolution Protocol (ARP), and the second protocol is also between a plurality of the IoT networks of the different IP classes. As a protocol supporting request and response, when it includes at least a part of PoE_Simple Service Discovery Protocol (PoE_SSDP) and Web Service Dynamic Discovery (WS-Discovery), the processor is configured to: In transmitting IP information, when it is determined that there is no response for a predetermined waiting time after transmitting the specific IP information to a network corresponding to the same IP class among the IoT networks using the first protocol, the second A management server, characterized in that by using a protocol to transmit the specific IP information to other networks other than the network corresponding to the same IP class among the IoT networks. 11. The method of claim 10,
In the process (I) above,
Each of the first PoE switch to the k-th PoE switch is configured such that the first IoT device to the n-th IoT device are respectively connected to the first PoE switch to the k-th PoE switch for each of the first cluster to the k-th cluster. After the connection is completed so as to correspond to each other, by requesting a response from at least a portion of each of the first IoT device to the n-th IoT device connected to each of the first PoE switch to the k-th PoE switch, ( i) each of the obtained response IP information is extracted and transmitted to the database so that it can be managed; In a state in which a MAC ADDRESS TABLE is generated so that each of the response MAC addresses and each of the extracted response port information correspond to each other, the processor refers to the server-side clue data, and each of the first IoT device to the n-th IoT device It is characterized in that it determines the specific IoT equipment that is abnormal among
In the process (II) above,
In each of the first PoE switch to the kth PoE switch, when the specific IP information is confirmed, the specific IoT device corresponding to the specific IP information is displayed with reference to the response IP information stored in each and the MAC ADDRESS TABLE. Management server, characterized in that for checking the connected specific port. 11. The method of claim 10,
In the process (II) above,
the processor, the specific IoT device corresponding to the specific MAC address information by causing at least a part of the first PoE switch to the kth PoE switch to additionally check the manufacturer identification code part included in the specific MAC address information Management server, characterized in that the power is reset. 11. The method of claim 10,
The processor, each of the first PoE switch to the kth PoE switch, through a predetermined management program, the management program being installed in the management server or installed in each of the first PoE switch to the kth PoE switch characterized by managing
The management program provides switch management information including information on at least one PoE switch among each of the first PoE switch to the kth PoE switch through a predetermined interface, wherein (i) the management program manages the When installed in a server, the management program is executed on the management server so that the processor obtains the switch management information, and (ii) the management program is installed in each of the first PoE switch to the kth PoE switch and operates as a web server, when the processor connects to at least one of each of the first PoE switch to the kth PoE switch, at least one of the first PoE switch to the kth PoE switch is executed, the management server receives the switch management information as a client, and the processor acquires the switch management information.

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