TW202232985A - A method of network device locating - Google Patents

Abstract

A system for locating a network device comprises a network management controller and at least one controlled network. Multiple devices in the controlled network include a first-layer network switch, a wireless base station or a second-layer network switch connected to the first-layer network switch, and a wired device or a wireless device connected to the second-layer network switch or wireless base station. The network management controller uses continuous multiple broadcast packets to collect the statuses of all devices in the controlled network and obtain the logic and related locations of the devices and store the same, and reads the information of a new device when a new device is found, so as to rebuild the network topology. When an abnormality is found in a device, the network management controller can confirm the line status of the upper-layer device of the device that has an abnormal state, and determine the location and cause of the device that has the abnormal state.

Description

Network equipment location and search system

The present invention relates to a network system, in particular to a network equipment positioning and searching system.

In the past, the management of network devices was mainly through a Simple Network Management Protocol (SNMP) software, and all controlled devices would report their status to SNMP through the Management Information Base (MIB) of SNMP If there is a problem with the managed device, the SNMP software cannot know the status of the device or the related connections of the device. Therefore, it takes time for the administrator to understand and search from different devices. Similarly, it also needs to rely on the management The user experience is used to find the faulty network terminal equipment, nodes, and relay connection network equipment for subsequent processing.

For example, in the network architecture shown in FIG. 1A , the network workstation 11 is connected to the departmental Ethernet switch 12 , and the departmental Ethernet switch 12 is further connected to the backbone switch 13 . When the SNMP network manager finds that the network workstation 11 has lost the connection, or receives a report from the user that the connection is lost, the network manager needs to go to the departmental Ethernet switch 12 or the network workstation 11 to find out the cause of the disconnection or failure. In another example of the network architecture shown in FIG. 1B , the wireless user or the notebook computer 14 is wirelessly connected to the departmental wireless base station 15 , and the departmental wireless base station 15 is in turn connected to the network switch 16 . Wireless users in the area cannot use the area wireless normally. Therefore, the response to the SNMP network manager cannot be used. Or the SNMP manager wants to find the wireless user location. Network management also personally went to the wireless site to understand the actual situation of the point of failure.

Therefore, the present invention proposes a network device positioning and searching system in view of the above-mentioned deficiencies of the prior art and future needs. The network administrator can find the abnormal location of the network through the network management controller without going to the site. The specific architecture and its implementation will be described in detail below:

The main purpose of the present invention is to provide a network equipment location and search system, which reports the status of the scattered network equipment to the network management controller in a centralized manner, so that the network administrator can know the equipment status in real time. The topology and related information of the new equipment can be immediately known.

Another object of the present invention is to provide a network device positioning and searching system, which can not only know the abnormal state of the abnormal device, locate the location of the abnormal device, but also know the location of the abnormal point when the device is abnormal. For example, a network line breakpoint or a wireless anomaly point.

In order to achieve the above object, the present invention provides a system for locating and finding network equipment, including: at least one controlled network, including a plurality of devices, the devices include: at least one layer 1 network switch; at least one layer 2 network A network switch or at least one wireless base station, connected to the first-layer network switch; and at least one wired device or wireless device, connected to the second-layer network switch or wireless base station; and a network management controller, Connected to the first-layer network switch in the managed network, the network management controller uses continuous multiple broadcast packets to collect the status of all devices in the managed network, obtain the logic and related positions of the devices and store them In a database, it includes information such as the network address (MAC Address), IP address, physical connection or wireless connection of the device. When a new device is found, the information of the new device is read to rebuild the network topology. When a device with an abnormal state is found in the device, the network management controller confirms the line status of the upper-layer device of the abnormal state device, and judges that the state is abnormal. The location of the device and why.

According to an embodiment of the present invention, the network management controller detects the new device using a smart discovery protocol (Smart Discovery).

According to an embodiment of the present invention, the network management controller uses a Simple Network Management Protocol (SNMP) to check the status of each device in the managed network, and to confirm the connection status of the new device.

According to an embodiment of the present invention, when the new device is a new network switch, the network management controller uses a physical line detection (Cable Diagnose) to scan the network connection to confirm all the network switches on the new network switch. After the status of the physical network line, remotely order the new network switch to perform a digital detection monitoring (Digital Diagnose Monitoring) of an optical fiber interface to read data, and then order a link layer discovery protocol (Link Layer Discovery Protocol) from the remote end. Discovery Protocol, LLDP) for data reading of the new network switch and data reading of at least one connected device on the new network switch.

According to an embodiment of the present invention, when the new device is a new wireless base station, the network management controller determines whether the new wireless base station is directly connected to the Layer 1 network switch, and if so, uses a physical line detection (Cable Diagnose) to scan the network connection to confirm the status of all physical lines in the managed network and record it in a switch data table, and then perform remote control and access peripheral equipment according to the number of channels of the new wireless base station .

According to an embodiment of the present invention, when the new device is a new wired device, the network management controller confirms the topology attribute of the new wired device with a plurality of test packets, and uses a physical line detection (Cable Diagnose) for network connection. Line scan to record the physical line location of new wired equipment, and then write the topology attributes into the database.

According to an embodiment of the present invention, the topology attribute of the new wired device includes an end node or a terminal device, and the terminal device is a camera or a phone.

According to an embodiment of the present invention, when the new device is a new wireless device, the network management controller confirms the physical route of the new wireless device, and confirms the attributes of the new wireless device with a plurality of test packets, and determines that the new wireless device is a new route or new wireless base station, and write the new wireless equipment into one of the corresponding data tables.

According to an embodiment of the present invention, the test packets include RFC1213, PLANET Smart Discovery (PLANET Smart Discovery) packets, ONVIF Discover packets, Link Layer Discovery Protocol (LLDP) packets and/or Universal Naming Convention (UNC) packets.

According to the embodiment of the present invention, the first layer network switch, the second layer network switch and the wireless base station are located in a network equipment layer of the managed network, and the wired equipment and the wireless equipment are located in the controlled management network. One of the paths is the terminal device layer.

According to an embodiment of the present invention, the network management controller stores the information of the network address (MAC Address), IP address, physical connection or wireless connection of the device.

According to an embodiment of the present invention, the wired device or the wireless device includes a wireless base station, a network camera, a network phone, or a router.

According to an embodiment of the present invention, the database of the network management controller further stores the physical line length of the device. When the abnormal state device is a layer 2 network switch or a wired device, the device on the upper layer of the abnormal state device uses the Simple Network Management Protocol (SNMP) is set to automatically report messages to the network management controller. The network management controller uses a physical circuit detection (Cable Diagnose) to determine the status of the physical circuit, and compares the circuit length of the abnormal device with the data. The physical lines of the library have the same length to determine the abnormal cause of the abnormal state equipment.

According to an embodiment of the present invention, when the abnormal state device is a wireless base station or a wireless device, the network management controller finds out from the database the upper-layer device and its wireless network name that the abnormal state device is attached to, and then according to The upper-layer device previously received a signal strength value of the abnormal state device to determine the initial position of the abnormal state device, and read a signal strength value of the abnormal state device and its surrounding wireless base stations, and locates according to the signal strength values. The location of the abnormal state equipment.

According to an embodiment of the present invention, each of the wireless devices is further connected to the wireless base station through a second layer wireless base station, respectively.

According to an embodiment of the present invention, the network management controller has Simple Network Management Protocol (SNMP), Open Network Video Interface Forum (ONVIF), Link Layer Discovery Protocol ( Link Layer Discovery Protocol, LLDP) and PLANET Smart Discovery.

The present invention provides a network equipment positioning and searching system, which is used for managing a plurality of equipments in a managed network and locating the abnormal equipment when an abnormal state occurs.

Please refer to FIG. 1 , which is a system architecture diagram of the network device location and search system 20 of the present invention. The network device locating and searching system 20 of the present invention includes a network management controller 22 and at least one managed network 30 connected thereto. The network management controller 22 is used to monitor and manage the managed network 30 . plural devices. The devices in the managed network 30 include at least one layer 1 network switch 302, at least one layer 2 network switch 304 or at least one wireless base station 306 and a plurality of terminal devices. The first layer network switch 302 is connected to the network management controller 22 , and the first layer network switch 302 has a plurality of connection ports, which are respectively connected to the second layer network switch 304 or the wireless base station 306 . The plurality of terminal devices include wired users 308, wired devices 310, wireless devices 314 or 318, and these wired or wireless devices may include wireless base stations, network cameras, Internet phones, or routers. Wherein, when the terminal device is the wired user 308 or the wired device 310 , the terminal device is directly connected to the layer 2 network switch 304 . When the terminal device is the wireless device 314 or 318, there are two possible connection methods. As shown in the figure, one is that the wireless device 314 is connected to the second-layer network switch 304 through a second-layer wireless base station 312. , between the wireless device 314 and the second-layer wireless base station 312 is wireless transmission, while the second-layer wireless base station 312 and the second-layer network switch 304 are physical lines; and another connection method is wireless The device 318 is connected to the wireless base station 306 through a second-layer wireless base station 316 , and wireless transmission is performed between the wireless device 318 , the second-layer wireless base station 316 and the wireless base station 306 . In an embodiment of the present invention, the first layer network switch 302 , the second layer network switch 304 , the wireless base station 306 and the second layer wireless base stations 312 , 316 are located in one network of the managed network 30 The wired user 308 , the wired device 310 and the wireless devices 314 , 318 are located at a terminal device layer of the managed network 30 .

The network management controller 22 will continuously send out multiple broadcast packets to collect the status of all the devices in the managed network 30, obtain the logic and related positions of the devices, and store them in a database (not shown in the figure). , the database may be located in the network management controller 22 or connected to the network management controller 22 . The logical and related location of the device includes the logical location and the physical location of the device. The logical location is the location that the network management controller 22 finds with a protocol (at least any one of the several communication protocols and protocols mentioned in the following paragraph), which is a logically relative location, such as "port 9 of switch A. ". The relevant location is the location description entered by the administrator, such as "printer on the ninth floor". When the network management controller 22 discovers a new device using the broadcast packet, it reads the information of the new device to reconstruct the network topology. When a device in the managed network 30 is found to have an abnormal state, the network management controller 22 will confirm the line status of the device on the upper layer of the abnormal state device, and determine the location and cause of the abnormal state device.

In the present invention, the network management controller 22 has Simple Network Management Protocol (SNMP), Open Network Video Interface Forum (ONVIF), Link Layer Discovery Protocol (Link Layer) Discovery Protocol, LLDP) and PLANET Smart Discovery (PLANET Smart Discovery) capabilities. For example, the network management controller 22 uses the smart discovery protocol to detect new devices; for example, the network management controller uses the Simple Network Management Protocol (SNMP) to check the status of each device in the managed network 30, and confirm The connection status of the new device.

Please refer to FIG. 2 and FIG. 3 at the same time, the following describes in detail the actions of the network management controller 22 when the discovered new devices are different devices.

As described in steps S10 to S12, when the network management controller 22 uses the PLANET smart discovery protocol to discover that there is a new device in the managed network 30, it first determines whether the device is a terminal device, and if not, it may be a new device The second layer network switch 304, the new wireless base station 306, or the new second layer wireless base station 312 or 316. If the new device is a new network switch, use a physical line detection (Cable Diagnose) to scan and record all physical network lines for the first time as described in steps S14-S18 to confirm the new network The status of all physically connected network lines on the switch. For example, if the new network switch is a network switch with 8 UTP ports and 2 fiber ports, the network management controller commands the new network from the remote The circuit switch will detect the physical circuit of the whole machine, so the information in the following table 1 will be obtained: UTP port Cord Length - Pair A Cord Length - Pair B Line - Pair C Line - Pair D 1 43m – open 43m – open 43m – open 43m – open 2 15m – close 14m – close 15m – open 15m – open 3 83m – close 82.5m – close 83m – close 82.6m—close 4 Open Open Open Open 5 Open Open Open Open 6 Open Open Open Open 7 80m – close 81m – close 80m – close 79m – short 8 Open Open Open Open Table I

After the network management controller 22 obtains the physical line information of all twisted-pair ports, it remotely commands the new network switch to perform a digital detection monitoring (Digital Diagnose Monitoring) of the optical fiber interface to read the data, and then, The network management controller 22 commands from the remote end to perform data reading of the new network switch and data reading of at least one connected device on the new network switch using the Link Layer Discovery Protocol (LLDP), so as to obtain Information in Table 2 below: SFP port module distance wavelength TX DB RX DB 9 SFP-XXX Multimode 20KM 1330nm -9dbm -30dbm LLDP-9' SFP-XXX Multimode 20KM 1330nm -9dbm -27dbm 10 - - - - - LLDP-10' - - - - - Table II

Wherein, LLDP-9' and LLDP-10' are the peer device information read by the link layer discovery protocol. Therefore, from the above two tables, the network management controller 22 can learn the information of the initial up-down link of the newly discovered new network switch as shown in Table 3: Device properties switch Device IPv4 address NNN.NNN.NNN.NNN Device MAC A8F7E0-XXXXXX Device IPv6 address FF.FF.FF.FF.FF.FF Device port type TP 8x 1000BASE-T Device port type fiber 2x SFP 1000BASE-X Device port type wireless none Device port type other none topology parent node Port 9 port Physical connection status physical distance Topology Child Node Type 1 no connected device 43m NA 2 Have 15m wireless base station 3 Have 83m EN 4…..6, 8 none none NA 9 Have 20KM Topology PN 10 none none NA

Among them, NA represents no child node, EN represents that it is an end node, PN represents a parent node (Parent Node), which is the upper connection port of the new network switch discovered by the network management controller 22, that is, the new network switch. A port that responds to the smart discovery protocol to the network management controller 22 . The network management controller 22 stores the information in the database for later processing decisions when the device is abnormal.

If the new device is a new wireless base station, as described in steps S20-S24, the network management controller 22 also uses the physical circuit detection to scan and record the physical network lines, so as to confirm all the new wireless base stations. The status of the physically connected network line. However, since the new wireless base station may be directly connected to the first-layer network switch 302, or may be located at the position of the second-layer network switch 312 or 316, it is also necessary to determine which layer the new wireless base station is at, and also That is, the routing of the physical connection is confirmed. The network management controller 22 first confirms the basic information of the new wireless base station according to RFC1213, including the attribute of its port CN. If the record is not PN, it means that there is no other wireless device between the new wireless base station and the network management controller 22. , then use the physical line detection to record the physical line location and topology attributes, for example, record it as a wireless base station, such as the second port in Table 3 above. Next, a physical line detection is performed to confirm the physical line status again, and the information is recorded in the data table of the switch that found the new wireless base station. The network management controller 22 performs remote control according to the number of wireless channels of the new wireless base station and reads the periphery of the new wireless base station, including wireless connection or wireless inquiry equipment information, so as to establish relevant data in the network management controller 22 Table, as shown in Table 4 below: Device properties wireless base station Device IPv4 address NNN.NNN.NNN.NNN Device MAC A8F7E0-XXXXXX Device IPv6 address FF.FF.FF.FF.FF.FF Wireless channel A enable Wireless Channel A Properties 2.4GHz Wireless channel B enable Wireless Channel B Properties 5GHz  …  …  …  … physical location Nxxx°- Exxx° Location description - Channel A Information Peripheral base station information base station name Use SSID Signal Strength (RSSI) MAC address link attribute AP11 CCCCC -76db A8F7E0-ABABAB EN AP13 DDDDD -85db A8F7E0-CFCFCF NA ... link terminal equipment Equipment name Use SSID signal strength MAC address link attribute IPHONE_A QQQQQ -65db A8F7E0-234567 EN XP_PC QQQQQ -72db 00C002-224466 NA ... Channel B information Peripheral base station information base station name Use SSID Signal Strength (RSSI) MAC address link attribute 5G_AP7 ABABA -82db A8F7E0-334455 NA 5G_AP9 CDCDC -86db A8F7E0-445566 NA ... link terminal equipment device name Use SSID signal strength MAC address link attribute IPHONE_A PPPPP -53db A8F7E0-777777 NA  … Table 4

In the above table 4, the physical location location means that when the network device is equipped with GPS or the device is configured, the geographic information is filled in the field data. When the connection attribute of the base station in the peripheral base station information is CN, it means that there is a connection, and it is the down-connected device of the new wireless base station; if it is NA, it means that the peripheral base station is not connected.

After the above steps of data collection in steps S14 to S24, the network management controller 22 can first establish the basic information of the network device layer in the managed network 30, and can also establish in the network management controller 22 A tabular description or hierarchical, graphical representation of the network architecture diagram.

Next, when it is determined in step S12 that the new device is a terminal device, then in step S26 it is determined whether the new device is a wired device or a wireless device, if it is a wired device, including a wired terminal device or a wired user, the steps S28-S32 As mentioned above, the network management controller 22 first confirms the topology attributes of the new wired equipment with a plurality of test packets, the test packets include RFC1213, PLANET Smart Discovery (PLANET Smart Discovery) packets, ONVIF Discover packets, Link Layer Discovery Protocol (LLDP) packets and/or universal naming convention (UNC) packets, etc. If the port attribute of the wired port of the upper-layer switch of the new wired device is found to be blank, fill in the attribute according to the responding device. Taking FIG. 4A and FIG. 4B as an example, it is assumed that the network management controller 40 is connected to the switch A 42, the switch B 44, the switch C 46 and the new wired device 48 in sequence, and the switch A 42 has an upper connection port 422 and lower port 424, switch B 44 has an upper port 442 and a lower port 444, switch C 46 has an upper port 462 and a lower port 464, in other words, the upper layer switching of the new wired device 48 The switch is switch C 46. In the figure, the attributes in the upper and lower ports are the relationship of the connected devices. For example, the attribute filled in the upper port 422 of the switch A 42 is root, which means it is connected to the network management controller 22, which is The first layer network switch; the attribute filled in the lower port 424 of the switch A 42 is the PN of B, which means that the switch A 42 is the parent node of the switch B 44; the upper port 442 of the switch B 44 The attribute filled in is the CN of A, which means that switch B 44 is a child node of switch A 42, and so on. When it is found that the port 464 under the switch C 46 of the upper layer of the new wired device 48 is blank as shown in FIG. 4A, then as shown in FIG. 4B, the attribute is filled in the port 464 under the switch C 46 is EN, representing the new wired device 48 as an end node, such as a computer host. If the new wired device 48 is a camera or a camera (ONVIF), it is set to the Camera attribute, and the same is true for a telephone set, a router, etc., and different attributes are filled in the lower port 464 of the switch C 46 respectively.

In this way, after the network management controller 22 confirms the physical route and records the relevant attributes of the new wired equipment in the database, for example, after updating the data table of the switch C 46, the network management controller 22 instructs the switching The switch C 46 performs physical line detection on the port of the new wired device 48 to finally confirm the length of the physical line of the new wired device 48. For example, it is found that the distance between the new computer host and the physical network line of the switch C 46 is 83 meters. Write to the data table of switch C 46 for future equipment detection and reporting.

When it is determined in step S26 that the new device is a wireless device, as described in steps S34 to S38, the network management controller 22 confirms the physical route of the new wireless device, and confirms the properties of the new wired device with a plurality of test packets. The test packets also include RFC1213, PLANET Smart Discovery (PLANET Smart Discovery) packets, ONVIF Discover packets, Link Layer Discovery Protocol (LLDP) packets and/or Universal Naming Convention (UNC) packets, etc. Next, the network management controller 22 confirms the device information of the new wireless device using the smart discovery protocol or the hierarchical discovery protocol, determines that the new wireless device is a new route or a new wireless base station, and writes the new wireless device into one of the corresponding ones in the data sheet. Taking FIG. 5A and FIG. 5B as an example, it is assumed that the network management controller 40 is connected to the switch A 42, the switch B 44, the wireless base station C 50 and the new wireless device 52 in sequence, and the switch A 42 has an upper The connection port 422 and the lower connection port 424, the switch B 44 has an upper connection port 442 and a lower connection port 444, the wireless base station C 50 has a lower connection port 504, in other words, the upper layer device of the new wireless device 52 is a wireless base station C 50. In the figure, the attributes in the upper and lower ports are the relationship of the connected devices. For example, the attribute filled in the upper port 422 of the switch A 42 is root, which means it is connected to the network management controller 22, which is The first layer network switch; the attribute filled in the lower port 424 of the switch A 42 is the PN of B, which means that the switch A 42 is the parent node of the switch B 44; the upper port 442 of the switch B 44 The attribute filled in is the CN of A, which means that the switch B 44 is a child node of the switch A 42, and the attribute filled in the lower port 444 of the switch B 44 is AP, which represents the next layer device of the switch B 44 is a wireless base station, and so on. When it is found that a new wireless device 52 is connected to the back end of the wireless base station C 50 as shown in FIG. 5A, then, as shown in FIG. 5B, the connection port 504 under the wireless base station C 50 is filled with the attribute D. PN indicates that the wireless base station C 50 is the parent node of the new wireless device 52 , and the upper port 522 of the new wireless device 52 is filled with CN of C, indicating that it is the child node of the wireless base station C 50 . If the new wireless device 52 is a video camera or a camera (ONVIF), it is set to the Camera attribute, and the same is true for a telephone set, a router, etc., and different attributes are filled in the lower port 504 of the wireless base station C 50 respectively.

In addition, the network management controller 22 will also fill in the information in the SSID field according to the wireless network name (SSID) that the new wireless device is attached to. If the wireless device is IPHONE_A, write the network address of the IPHONE_A, the signal strength, and the connection attribute between the new wireless device IPPONE_A and its upper wireless base station in the SSID field it is attached to, namely SSID:QQQQQ. If the new wireless device is also another wireless base station, as shown in AP11 in Table 4 above, the base station information of the new wireless device is written into the data table in the same SSID used by the wireless base station.

Since the network management controller 22 continuously searches for devices and maintains the database within the reach of the broadcast packets, including the physical connection location between the network management controller 22 and the device, if the relevant device When offline or disconnection occurs, the network management controller 22 will report the device status according to the collected data, so as to solve the problem that the network administrator needs to go to each device or each physical location to debug the device by himself.

When the abnormal device is a wired device, such as the Layer 2 network switch 304, the wired user 308, or the wired device 310, there are many reasons for the disconnection of the wired device, including loose connectors and physical lines damaged by external forces. If the device is broken or damaged, the upper-layer device of the abnormal device will automatically report a message to the network management controller 22 by using the Simple Network Management Protocol (SNMP). Taking FIG. 4A as an example, if the network line between the switch B 44 and the switch C 46 is broken, the simple network management protocol of the switch B 44 will automatically report a message to the network management controller 22 . Next, the network management controller 22 uses the physical line detection to determine the physical line status, particularly the physical line status and the physical line length between the switch B 44 and the switch C 46 . Since the physical line length of each device is stored in the database of the network management controller 22, the network management controller 22 can compare whether the line length of the abnormal device is consistent with the physical line length of the database, so as to determine whether the abnormal device has the same physical line length. Abnormal. If the obtained physical line length is the same as the length in the database, it is determined that the line end is abnormal, including the possible line loose or the end abnormality of the switch C 46 being powered off. However, if it is found that the obtained physical line length is partially open and partially open, or the length of any network line is different from the expected length in the database, it will be deemed that the physical line is abnormal. After summarizing, the network management controller 22 reports the status to the network manager according to the relevant analysis data, and reports the disconnection of the switch C 46 and its related equipment to the network manager. Obtain information, such as the physical line is disconnected, the disconnection point is located at a certain meter of the line, or the related line is loose and the connection status of the switch C 46 needs to be confirmed. If the upper-layer switch B 44 has recorded the geographic location of the switch C 46, this information will also be provided to the network management controller 22 for easy positioning.

In addition, when the abnormal state device is a wireless base station or a wireless device, the network management controller 22 finds the upper layer device and its wireless network name (SSID) attached to the abnormal state device from the database, and then according to the upper layer device The device previously received a signal strength value of the device in abnormal state to determine the initial position of the device in abnormal state. At the same time, because the wireless base station also continuously updates the connections of all wireless devices, the network management controller 22 also reads the data of the abnormal state device and its surrounding (or affiliated) wireless base stations when inquiring. The read information includes a signal strength value (RSSI), and the position of the abnormal state equipment is located according to these signal strength values, for example, at least three signal strength values are used for positioning by triangulation. Table 4 above is an example, if the last record of IPHONE_A in the network management controller 22 is AP_C, and IPHONE_A is not found in the associated wireless base stations found around AP_C, it can be confirmed that the last offline location of IPHONE_A is at AP_C. When the administrator wants to search for IPHONE_A, if the database of AP_C (ie, the network management controller 22 ) and AP_C device information still exist, or the wireless base stations around AP_C also have relevant data and signal strength values, then The network management controller 22 will calculate the position of the IPHONE_A (for example, the three-point positioning method) according to the obtained signal strength values, and report the possible prediction results to the administrator after the calculation.

Therefore, by means of the network device location and search system provided by the present invention, the remote network devices can be centrally managed, especially when a plurality of network devices are scattered everywhere, such as network devices and IoT network connection devices built in Everywhere, in the situation that the management of equipment status is difficult, the status and location of each network equipment can be reported to the central administrator, so that the administrator can know the current status of the equipment in real time, and can quickly locate the location of abnormal equipment.

Only the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications made according to the features and spirits described in the scope of the application of the present invention shall be included in the scope of the application for patent of the present invention.

11: Network workstation 12: Departmental Ethernet Switch 13: Backbone switch 14: Wireless users or laptops 15: Departmental wireless base station 16: Network switch 20: Network equipment location and search system 22: Network Management Controller 30: Managed network 302: Layer 1 Network Switch 304: Layer 2 Network Switch 306: Wireless Base Station 308: Wired user 310: Wired Devices 312: Layer 2 wireless base station 314: Wireless Devices 316: Second floor wireless base station 318: Wireless Devices 40: Network Management Controller 42: Switch A 422: upper port 424: lower port 44: Switch B 442: upper port 444: lower port 46: Switch C 462: upper port 464: lower port 48: New Wired Equipment 50: Wireless base station C 504: Down port 52: New Wireless Device D 522: upper port

FIG. 1A and FIG. 1B are schematic diagrams of abnormality in the wired network and the wireless network, respectively. FIG. 2 is a system architecture diagram of the network device location and search system of the present invention. FIG. 3 is a flow chart of the network device location and search system of the present invention when a new device is discovered. Figures 4A and 4B are schematic diagrams of filling in attributes in the upper-layer device when the new device is a wired device. Figures 5A and 5B are schematic diagrams of filling in attributes in the upper-layer device and the new device when the new device is a wireless device.

20: Network equipment location and search system

22: Network Management Controller

30: Managed network

302: Layer 1 Network Switch

304: Layer 2 Network Switch

306: Wireless Base Station

308: Wired user

310: Wired Devices

312: Layer 2 wireless base station

314: Wireless Devices

316: Second floor wireless base station

318: Wireless Devices

Claims (16)

A network device positioning and searching system, comprising: At least one managed network, including a plurality of devices, including: at least one layer 1 network switch; at least one layer 2 network switch or at least one wireless base station connected to the layer 1 network switch; and at least one wired device or wireless device connected to the layer 2 network switch or the wireless base station; and a network management controller connected to the layer 1 network switch in the managed network, the network management controller collects all the The status of the devices, the logical and relative positions of the devices are obtained and stored in a database, when a new device is found, the information of the new device is read to reconstruct the network topology, when a state is found in the devices When there is an abnormal device, the network management controller confirms the line status of the upper-layer device of the abnormal state device, and judges the location and reason of the abnormal state device. The network device location finding system of claim 1, wherein the network management controller detects the new device using a smart discovery protocol (Smart Discovery). The system for locating and finding network equipment according to claim 1, wherein the network management controller uses a Simple Network Management Protocol (SNMP) to check the information about the equipment in the managed network. status, and confirm the connection status of the new device. The network device locating and finding system according to claim 1, wherein when the new device is a new network switch, the network management controller uses a physical line detection (Cable Diagnose) to scan the network connection, After confirming the status of all physical network lines on the new network switch, remotely order the new network switch to perform a digital detection monitoring (Digital Diagnose Monitoring) of a fiber interface to read the data, and then remotely The terminal instructs a Link Layer Discovery Protocol (LLDP) to perform data reading of the new network switch and data reading of at least one connected device on the new network switch. The network device location and search system according to claim 1, wherein when the new device is a new wireless base station, the network management controller determines whether the new wireless base station is directly connected to the first-layer network switch, If so, use a physical line detection (Cable Diagnose) to scan the network connection to confirm the status of all physical lines in the managed network and record it in a switch data table, and then based on the new wireless base The number of channels of the station can be used for remote control and access to peripheral devices. The network device location finding system according to claim 1, wherein when the new device is a new wired device, the network management controller confirms the topology attribute of the new wired device with a plurality of test packets, and uses a physical circuit Detect (Cable Diagnose) to scan the network connection to record the physical line position of the new wired device, and then write the topology attribute into the database. The network device location and search system according to claim 6, wherein the topology attribute of the new wired device includes an end node or a terminal device, and the end device is a camera or a telephone. The network device location finding system according to claim 1, wherein when the new device is a new wireless device, the network management controller confirms the physical route of the new wireless device, and confirms the new wireless device with a plurality of test packets attribute, determine that the new wireless device is a new route or a new wireless base station, and write the new wireless device into a corresponding data table. The network device location finding system as described in claim 6 or 8, wherein the test packets include RFC1213, PLANET Smart Discovery (PLANET Smart Discovery) packets, ONVIF Discover packets, Link Layer Discovery Protocol (LLDP) packets and/or Universal naming convention (UNC) package. The network equipment location and search system as claimed in claim 1, wherein the first-layer network switch, the second-layer network switch and the wireless base station are located at a network equipment layer of the managed network , and the wired device and the wireless device are located at a terminal device layer of the managed network. The network device location and search system as claimed in claim 1, wherein the network management controller stores the information of the network addresses (MAC Address), IP addresses, physical connections or wireless connections of the devices. The network device location and search system according to claim 1, wherein the wired device or the wireless device includes a wireless base station, a network camera, an Internet phone or a router. The network device location and search system as claimed in claim 1, wherein the database of the network management controller further stores the physical line lengths of the devices, when the abnormal state device is the layer 2 network switch Or when the wired device is used, the device on the upper layer of the abnormal state device uses the Simple Network Management Protocol (SNMP) to set an automatic report message to the network management controller. The network management controller uses a physical line detection (Cable Diagnose) to determine the state of the physical line, and compare whether the line length of the abnormal device is consistent with the physical line length of the database to determine the abnormal cause of the abnormal device. The network device location and search system according to claim 1, wherein when the abnormal state device is the wireless base station or the wireless device, the network management controller finds out from the database the device attached to the abnormal state device. The upper-layer device and its wireless network name, and then according to a signal strength value of the abnormal state device previously received by the upper-layer device to determine the initial position of the abnormal state device, and read the abnormal state device and its surrounding. A signal strength value of the wireless base station is used to locate the position of the abnormal state equipment according to the signal strength values. The network device location and search system of claim 1, wherein each of the wireless devices is further connected to the wireless base station through a second-layer wireless base station, respectively. The network device location and search system according to claim 1, wherein the network management controller has Simple Network Management Protocol (SNMP), Open Network Video Interface Forum (Open Network Video Interface Forum) , ONVIF), Link Layer Discovery Protocol (LLDP) and PLANET Smart Discovery.

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