Method for automatic binding of wired switching equipment to wireless broadband channel equipment

Abstract

The application provides a method for automatically binding a wired switching device and a wireless broadband channel device, and utilizes a two-layer multicast message to realize information interaction between the wired switching device and each wireless broadband channel device, to complete determination of a wireless service port and a wireless management port of the wired switching device, to complete mapping of the wireless service port and the corresponding wireless broadband channel device, and to complete automatic binding of a legal mapping relationship. The application completes the above three steps by sending and receiving responses of the two-layer multicast message, guarantees stability, accuracy and high efficiency of the automatic binding, takes ID information of the wireless broadband channel device as a basis for judging legality and verifying identity, and further guarantees correctness. The application can efficiently complete automatic binding of the wired switching device and each wireless broadband channel device under the premise of stability and accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of backbone networks and wireless access networks, in particular to a method for automatically binding wired switching equipment and wireless broadband channel equipment. Background Art

[0002] Hybrid networking refers to building a stable backbone network through wired switching equipment, while using wireless broadband channel equipment for flexible access. Hybrid networking can not only ensure the efficient operation of the network, but also achieve convenient network expansion.

[0003] In the existing technology, in order to ensure the accuracy and stability of hybrid network data transmission, it is necessary to verify the mapping and binding relationship of the existing hybrid network on demand, and to complete the mapping and binding when a new network is established, and to complete the mapping and binding when a new wireless zone wide channel device is added. Wireless zone wide channel devices can self-organize to form a wireless network, but the mapping and binding between wired switching devices and wireless zone wide channel devices require configuration to be implemented. The configuration methods of wired switching devices and wireless zone wide channel devices are different, and the configuration complexity of each device is also different. If manual intervention is required to complete the configuration in each case, the mapping and binding cannot be completed flexibly and dynamically, which not only causes a waste of manpower, but also greatly reduces the configuration efficiency. Therefore, it is necessary to propose a method for automatically binding wired switching devices and wireless zone wide channel devices to improve the configuration efficiency while ensuring stability and flexibility. Summary of the Invention

[0004] The present invention provides a method for automatically binding a wired switching device with a wireless zone-wide channel device, solving the problem of "low efficiency in binding a wired switching device with a wireless zone-wide channel device" in the prior art.

[0005] The present invention solves the technical problem through the following technical solutions:

[0006] A method for automatically binding a wired switching device and a wireless zone-wide channel device, wherein the wired switching device includes at least one wireless port, and the number of wireless zone-wide channel devices is at least one, and each wireless zone-wide channel device self-organizes to form a wireless network, comprising the following steps:

[0007] (1) Confirm the wireless management port and wireless service port of the wired switching device:

[0008] For each wireless port, send a first perception message through the wireless port, and if the wireless port receives at least one first perception response message corresponding to the first perception message, set the wireless port as a wireless management port; otherwise, set the wireless port as a wireless service port;

[0009] (2) Find the wireless zone bandwidth channel device mapped to each wireless service port:

[0010] 1) Close all wireless service ports;

[0011] 2) Open one of the wireless service ports as the current wireless service port, send a second sensing message through the wireless management port of the wired switching device, at most one wireless broadband channel device responds to the second sensing message and provides a second sensing response message corresponding to the second sensing message to the wireless management port, the second sensing response message is filled with the identity information of the responding wireless broadband channel device which has uniqueness;

[0012] The wired switching device makes a legality judgment on the identity information, if it is legal, it maps the wireless broadband channel device corresponding to the identity information with the current wireless service port, otherwise it discards the identity information and prohibits the access of the wireless broadband channel device corresponding to the identity information;

[0013] Close the current wireless service port;

[0014] 3) Open the next wireless service port as the current wireless service port, execute step 2) until all wireless service ports execute step 2);

[0015] (3) Further confirm the mapping relationship and perform binding:

[0016] For each wireless service port of the wired switching device which has mapped a wireless broadband channel device, send a setting message carrying the identity information corresponding to the wireless service port to the wireless broadband channel device corresponding to the identity information, the corresponding wireless broadband channel device performs identity verification, if it is consistent, return a setting response message corresponding to the setting message, the wired switching device completes the automatic binding of the wireless service port and the wireless broadband channel device according to the setting response message, otherwise give up the access of the wireless broadband channel device which fails to provide the setting response message.

[0017] Further, another confirmation method of the wireless management port of the wired switching device in step (1) is:

[0018] For each wireless broadband channel device, the wireless broadband channel device actively sends a first sensing response message to the wired switching device, if one of the wireless ports of the wired switching device receives the first sensing response message, the wireless port is then set to a wireless management port pending state;

[0019] The wired switching device sends a first sensing message through the wireless port set to the wireless management port pending state, if the wireless port set to the wireless management port pending state receives a first sensing response message from a wireless broadband channel device, the wireless port set to the wireless management port pending state is set to a wireless management port state.

[0020] If the wired switching device sends the first perception message three times in a row through the wireless port set to the wireless management port pending state, and the wireless port set to the wireless management port pending state does not receive the first perception response message from the wireless zone wide channel device, then the wireless port is adjusted from the wireless management port pending state to the unknown port state.

[0021] Furthermore, another method for confirming the wireless service port of the wired switching device in step (1) is:

[0022] For each wireless port, a first perception message is sent through the wireless port. If another wireless port receives the first perception message, the other wireless port is set as a wireless service port.

[0023] Furthermore, there is at least one wired switching device, and each wired switching device is cascaded through a wired management port;

[0024] One wired switching device corresponds to one wireless network; for each wired switching device, the wired switching device is automatically bound to each wireless zone wide channel device in the corresponding wireless network by executing steps (1)(2)(3).

[0025] Furthermore, the wired switching device in step 2) makes a judgment on the legitimacy of the identity information, specifically: the wired switching device pre-stores the identity information of each wireless zone bandwidth channel device in a cache pool in advance. If the identity information carried by the second perception response message does not exist in the cache pool, the identity information carried by the second perception response message is deemed to be legal, and the wireless zone bandwidth channel device corresponding to the legal identity information is mapped to the current wireless service port. Otherwise, the identity information is discarded and access to the wireless zone bandwidth channel device corresponding to the identity information is prohibited.

[0026] The advantages and effects of the invention are:

[0027] 1. First, the wireless management port and wireless service port of the wired switching device are confirmed by sending a first perception message and receiving a first perception response message. Secondly, for each wireless service port, the wireless management port is used to send a second perception message and receive a second perception response message to obtain the identity information of the wireless zone broadband channel device corresponding to the wireless service port and perform a legitimacy judgment. For legal identity information, the corresponding wireless zone broadband channel device is mapped to the current wireless service port; otherwise, it is discarded. Finally, for each mapping relationship, a setting message is sent to the corresponding wireless zone broadband channel device through the wireless service port to reconfirm the identity. The relationship is bound or discarded based on the verification result. The above three steps make full use of the port performance of the wired switching device, the sending and response of the second layer multicast, and the legitimacy judgment and further confirmation of the uniquely identified identity information of each wireless zone broadband channel device, accurately and efficiently realizing the automatic binding of the wired switching device and the wireless zone broadband channel device. Whether it is an existing hybrid network, a new group hybrid network or a hybrid network with a newly added wireless zone broadband channel device, it can be efficiently configured through this solution.

[0028] 2. Regarding confirming the wireless management port of the wired switching device, a method is also provided in which the wireless zone wide channel device actively sends a first perception response message to realize active mapping of the wireless zone wide channel device and the wired switching device, thereby further improving the efficiency of automatic binding. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Flow chart of the method of the present invention.

[0030] Figure 2 This is a diagram of the connection relationship between wired switching equipment and each wireless zone wide channel equipment.

[0031] Figure 3 It is a connection relationship diagram between the wired switching equipment and each wireless zone wide channel equipment in a specific embodiment. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the following examples, but the present invention is not limited to these examples.

[0033] A method for automatically binding a wired switching device and a wireless zone-wide channel device, wherein the wired switching device includes at least one wireless port, and the number of wireless zone-wide channel devices is at least one, and each wireless zone-wide channel device self-organizes to form a wireless network, comprising the following steps:

[0034] (1) Confirm the wireless management port and wireless service port of the wired switching device:

[0035] For each wireless port, send a first perception message through the wireless port, and if the wireless port receives at least one first perception response message corresponding to the first perception message, set the wireless port as a wireless management port; otherwise, set the wireless port as a wireless service port;

[0036] (2) Find the wireless zone bandwidth channel device mapped to each wireless service port:

[0037] 1) Close all wireless service ports;

[0038] 2) opening one of the wireless service ports as the current wireless service port, sending a second perception message through the wireless management port of the wired switching device, at most one wireless zone bandwidth channel device responds to the second perception message, and provides a second perception response message corresponding to the second perception message to the wireless management port, where the second perception response message is filled with unique identity information of the responding wireless zone bandwidth channel device;

[0039] The wired switching device determines the legitimacy of the identity information. If the identity information is valid, the wireless zone bandwidth channel device corresponding to the identity information is mapped to the current wireless service port. Otherwise, the identity information is discarded and the wireless zone bandwidth channel device corresponding to the identity information is prohibited from accessing.

[0040] Close the current wireless service port;

[0041] 3) Open the next wireless service port as the current wireless service port and execute step 2) until all wireless service ports have completed step 2);

[0042] (3) Further confirm the mapping relationship and bind:

[0043] For each wireless service port of the wired switching device that has been mapped to a wireless zone bandwidth channel device, a setting message carrying the identity information corresponding to the wireless service port is sent to the wireless zone bandwidth channel device corresponding to the identity information. The corresponding wireless zone bandwidth channel device verifies the identity. If they are consistent, a setting response message corresponding to the setting message is returned. The wired switching device completes the automatic binding of the wireless service port and the wireless zone bandwidth channel device according to the setting response message. Otherwise, access to the wireless zone bandwidth channel device that fails to provide the setting response message is abandoned. The flowchart of the present invention is as follows. Figure 1 shown.

[0044] In a hybrid network, each wireless zone wide channel device is known to have one wireless management port and one wireless service port. However, the wireless service port and wireless management port of a wired switching device are not fixed. What is known is that a wired switching device has multiple wireless ports, one of which must be a wireless management port, and the remaining wireless ports can be used as wireless service ports. The wireless management port of a wired switching device can connect to the wireless management ports of m (m≥1) wireless zone wide channel devices, while one wireless service port of a wired switching device can only connect to the wireless service port of one wireless zone wide channel device. The correct binding relationship is as follows: Figure 2 The connection relationship between the wired switching device and each wireless zone bandwidth channel device is shown as follows: the wireless management port of the wired switching device is connected to the wireless management ports of wireless zone bandwidth channel device 1, wireless zone bandwidth channel device 2, and wireless zone bandwidth channel device m; the first wireless service port of the wired switching device is connected to the wireless service port of wireless zone bandwidth channel device 1; the second wireless service port of the wired switching device is connected to the wireless service port of wireless zone bandwidth channel device 2; and the mth wireless service port of the wired switching device is connected to the wireless service port of wireless zone bandwidth channel device m. Therefore, step (1) must be executed before further searching for mapping relationships and performing automatic binding.

[0045] The first perception message, first perception response message, second perception message, second perception response message, setup message, and setup response message are all implemented via Layer 2 multicast messages. The multicast MAC address of the Layer 2 multicast message is 01-80-C2-00-50-2D, the protocol type is defined as 0x8590, and the message data field content is implemented using fixed-length message content.

[0046] The format of a Layer 2 multicast message is shown in Table 1:

[0047] Table 1 Layer 2 multicast message format

[0048]

[0049]

[0050] Specifically, D_MAC is a fixed value 01-80-C2-00-50-2D, S_MAC is the MAC address of the packet transmission network device (i.e., the wired switching device), TYPE is a fixed value 0x8590, DATA is other detailed name fields in the Find command, and FCS is the checksum of the entire Ethernet Layer 2 multicast.

[0051] The definition table of the DATA field of the Find perception message is shown in Table 2:

[0052] Table 2 Definition of the DATA field in the Find perception message

[0053]

[0054] MainVersion is the main version information, currently defined as 2; SubVersion is the sub-version number, currently defined as 1; CommandType is the command type, Find perception message is defined as automatic discovery message, automatic discovery message is defined as 1, Set setting message is defined as setting message, setting command is defined as 2, Report reporting message is defined as reporting message, among which Find_Report search response message, search response command is defined as 3, Set_Report setting response message, setting response command is defined as 4; Length is the length field of the subsequent field, which does not include itself and the content of the previous field. The content of the Length field in the Find command, Set command and Report command is fixed length of 12 bytes, and the length of the Report reporting message increases with the R eport reported; LocalType is the device type of the wired switching device, and different wired switching devices have different port resources; LocalID is the MAC address of the wired switching device, which is unique and provided by the wired switching device to the wireless zone broadband channel device. Subsequently, the wireless zone broadband channel device uses the MAC address and the port number of the wired device to form the neighbor information of the wireless zone broadband channel device; LocalPort is the port sequence number of the wired switching device, and the sequence number value works together with the MAC address of the wired switching device to provide wireless neighbor information to the wireless zone broadband channel device; WirelessID is the ID information of the wireless zone broadband channel device. The legal ID of the wireless zone broadband channel device ranges from 1 to 65535, indicating that the wireless network supports a maximum of 65535 wireless zone broadband channel devices to be networked simultaneously.

[0055] Only when the wireless management port and wireless service port of the wired switching device are both in the linkUp state (connectable state) can the wired switching device send a Find perception message to each wireless zone broadband channel device. When sending a Find perception message, the wired switching device fills 0 in the WirelessID field, indicating that the wired switching device does not know the ID value of the specific wireless zone broadband channel device. The wireless zone broadband channel device replies by filling in the Find_Report response message. When sending a Set command, the wired switching device fills a non-zero value (specific ID information) in this area, indicating that the current message is a message explicitly sent by the wired switching device to the wireless zone broadband channel device corresponding to the ID information. The Report message carries the ID information of the current wireless zone broadband channel device to identify the source wireless zone broadband channel device of the current Report message.

[0056] The definition of the Report message provided by the wireless zone broadband channel device is shown in Table 3:

[0057] Table 3 Detailed definition of each field in the Perception Report message data domain

[0058]

[0059] MainVersion is the main version information, and the current version number is defined as 2; SubVersion is the subversion number, and the current subversion number is defined as 1; CommandType is the command type, and the Report report message is defined as the report message, among which Find_Report is a search response message, and the search response command is defined as 3, and Set_Report is a setting response message, and the setting response command is defined as 4; the length of the Report report message changes with the content of the Report report; SwitchType, SwitchID, and SwitchPort are the information of the wired switching device announced by the wired switching device in the Find perception message, which is filled in by the wireless zone broadband channel device and returned to the corresponding wired switching device. If there is no wired switching device information in the Report data packet, SwitchType, SwitchID, and SwitchPort are filled with 0; WirelessID is the ID information of the current wireless zone broadband channel device filled in by the wireless zone broadband channel device, indicating the identity of the current wireless zone broadband channel device.

[0060] The first perception message is specifically a Find perception message, i.e., a Layer 2 multicast message containing the Find command. The first perception response message is a Find_Report perception response message, i.e., a Find_Report command, which contains the identity information of the wireless broadband channel device, i.e., ID information. The second perception message is the same as the first perception message, both being Find perception messages (using the Find command). The second perception response message is the same as the second perception response message, both being Find_Report perception response messages (using the Find_Report command). The set message is a Set setting message (using the Set command), and the set response message is a Set_report setting response message (using the Set_report command).

[0061] When step (1) confirms whether the wireless port of the wired switching device is a wireless management port or a wireless service port, a Find perception message is sent through one wireless port, the WirelessID in the Find perception message is filled with 0, the wireless port that can receive the Find_Report response message is the wireless management port, and the others are wireless service ports.

[0062] In step (2), based on step (1), a wireless zone bandwidth channel device with a mapping relationship is searched for each wireless service port: only one wireless service port is opened at a time, and a Find perception message is sent through the wireless management port of the wired switching device. No or only one wireless zone bandwidth device provides a Find_Report perception response message to the wireless management port of the wired switching device, and the WirelessID of the Find_Report perception response message is filled with the ID information of the wireless zone bandwidth channel device that responds; in step 2), the wired switching device judges the legitimacy of the identity information (ID information), and The structure is: the wired switching device pre-stores the identity information (ID information) of each wireless zone bandwidth channel device into a cache pool in advance. If the identity information (ID information) carried by the second perception response message (Find_Report perception response message) does not exist in the cache pool, the identity information (ID information) carried by the second perception response message (Find_Report perception response message) is deemed to be legal, and the wireless zone bandwidth channel device corresponding to the legal identity information is mapped to the current wireless service port; otherwise, the identity information is discarded and access to the wireless zone bandwidth channel device corresponding to the identity information is prohibited.

[0063] In step (3), the mapping relationship is further confirmed and bound based on step (2): for the wireless service port of the wired switching device and the wireless zone bandwidth channel device that already have a mapping relationship, a Set setting message is sent through the wireless management port of the wired switching device. The Set setting message contains the ID information of the wireless zone bandwidth channel device. The wired switching device sends the Set setting message to the wireless zone bandwidth channel device corresponding to the ID information. After receiving the Set setting message, the wireless zone bandwidth channel device verifies the ID information with its own actual ID information. If correct, it returns a Set_report setting response message to the wireless management port of the wired switching device, indicating that the mapping relationship is correct and can be automatically bound immediately. Otherwise, no Set_report setting response message is returned, and the wired switching device prohibits access to the wireless zone bandwidth channel device.

[0064] Furthermore, another method for confirming the wireless management port of the wired switching device in step (1) is:

[0065] When both the wireless service port and the wireless management port are in the linkup state (connectable state), for each wireless zone bandwidth channel device, the wireless zone bandwidth channel device actively sends a first perception response message (Find_Report perception response message) to the wired switching device; when one of the wireless ports of the wired switching device receives the first perception response message (Find_Report perception response message), the wireless port is set to the wireless management port pending state; the wired switching device sends a first perception message (Find perception message) through the wireless port set to the wireless management port pending state, as shown in FIG. If the wireless port in pending state receives the first perception response message (Find_Report perception response message) from the wireless zone wide channel device, the wireless port set as the wireless management port pending state is set as the wireless management port state; if the wired switching device sends the first perception message (Find perception message) through the wireless port set as the wireless management port pending state three times in a row, and the wireless port set as the wireless management port pending state does not receive the first perception response message (Find_Report perception response message) from the wireless zone wide channel device, the wireless port is adjusted from the wireless management port pending state to the unknown port state. This method for determining the wireless management port is applicable to when a new wireless zone wide channel device is added, and the wireless zone wide channel device actively makes a binding request, rather than passively waiting for the wired switching device to send the Find perception message, which can improve the efficiency of automatic binding.

[0066] Furthermore, another method for confirming the wireless service port of the wired switching device in step (1) is:

[0067] For each wireless port, a first perception message (Find perception message) is sent through the wireless port. If another wireless port receives the first perception message (Find perception message, not Find_Report perception response message), the other wireless port is set as a wireless service port.

[0068] Furthermore, there is at least one wired switching device, and each wired switching device is cascaded through a wired management port; one wired switching device corresponds to one wireless network; for each wired switching device, the wired switching device is automatically bound to each wireless zone width channel device in the corresponding wireless network by executing steps (1)(2)(3).

[0069] The automatic binding method is described by taking a wired switching device and two wireless zone wide channel devices as an example. The two wireless zone wide channel devices form a wireless network by self-organizing. Figure 3 As shown. The specific binding method is:

[0070] (1) For wireless ports Eth-0-1, Eth-0-2, and Eth-0-10, a Find perception message is sent through Eth-0-1. If Eth-0-1 receives a Find_Report perception response message, Eth-0-1 is set as a wireless management port. Otherwise, it is set as a wireless service port. The same operation is repeated for Eth-0-2 and Eth-0-10 until a wireless management port is found. The following steps are described using Eth-0-1 and Eth-0-2 as wireless service ports and Eth-0-10 as a wireless management port.

[0071] (2) Close Eth-0-1 and Eth-0-2, open Eth-0-1, and send a Find perception message through Eth-0-10. No or only one wireless zone wide channel device (such as wireless zone wide channel device 1) provides a Find_Report perception response message to Eth-0-10. The Find_Report perception response message is filled with the ID information of the wireless zone wide channel device (such as 10). The wired zone wide channel device determines whether 10 is legal. If it is legal, it maps Eth-0-1 to wireless zone wide channel device 1.

[0072] Close Eth-0-1, open Eth-0-2, and confirm the mapping between Eth-0-2 and wireless broadband channel device 2 (ID is 20).

[0073] (3) The wired switching device sends a Set message (containing a specific ID information, such as 10) through Eth-0-10. After receiving the Set message, wireless zone wide channel device 1 takes out 10 and verifies it with its own ID information. If they are consistent, it sends a Set_report response message to Eth-0-10 to confirm that the mapping relationship is correct and automatic binding can be performed. If they are inconsistent, no Set_report response message is sent, and the wired switching device will discard 10, prohibiting wireless zone wide channel device 1 from accessing the hybrid network. The same operation is performed on wireless zone wide channel device 2 to complete the mapping and automatic binding.

Claims

1. A method for automatically binding a wired switching device and a wireless zone wide channel device, wherein the wired switching device includes at least one wireless port, the number of wireless zone wide channel devices is at least one, and each wireless zone wide channel device self-organizes to form a wireless network, characterized in that: The steps include: (1) Confirm the wireless management port and wireless service port of the wired switching device: For each wireless port, send a first perception message through the wireless port, and if the wireless port receives at least one first perception response message corresponding to the first perception message, set the wireless port as a wireless management port; otherwise, set the wireless port as a wireless service port; (2) Find the wireless zone bandwidth channel device mapped to each wireless service port: 1) Close all wireless service ports; 2) opening one of the wireless service ports as the current wireless service port, sending a second perception message through the wireless management port of the wired switching device, at most one wireless zone bandwidth channel device responds to the second perception message, and provides a second perception response message corresponding to the second perception message to the wireless management port, where the second perception response message is filled with unique identity information of the responding wireless zone bandwidth channel device; The wired switching device determines the legitimacy of the identity information, and if so, maps the wireless zone bandwidth channel device corresponding to the identity information to the current wireless service port; otherwise, the identity information is discarded and the access of the wireless zone bandwidth channel device corresponding to the identity information is prohibited; Close the current wireless service port; 3) Open the next wireless service port as the current wireless service port and execute step 2) until all wireless service ports have completed step 2); (3) Further confirm the mapping relationship and bind: For each wireless service port of the wired switching device that has been mapped to a wireless zone bandwidth channel device, a setting message carrying the identity information corresponding to the wireless service port is sent to the wireless zone bandwidth channel device corresponding to the identity information. The corresponding wireless zone bandwidth channel device performs identity verification. If they are consistent, a setting response message corresponding to the setting message is returned. The wired switching device completes the automatic binding of the wireless service port and the wireless zone bandwidth channel device according to the setting response message. Otherwise, access is abandoned on the wireless zone bandwidth channel device that fails to provide a setting response message.

2. The method for automatically binding a wired switching device and a wireless broadband channel device according to claim 1, characterized in that: Another method for confirming the wireless management port of the wired switching device in step (1) is: For each wireless zone bandwidth channel device, the wireless zone bandwidth channel device actively sends a first perception response message to the wired switching device; when one of the wireless ports of the wired switching device receives the first perception response message, the wireless port is set to a wireless management port pending state; The wired switching device sends a first perception message through the wireless port set to the wireless management port pending state, and if the wireless port set to the wireless management port pending state receives a first perception response message from the wireless zone wide channel device, setting the wireless port set to the wireless management port pending state to the wireless management port state; If the wired switching device sends the first perception message three times in a row through the wireless port set to the wireless management port pending state, and the wireless port set to the wireless management port pending state does not receive the first perception response message from the wireless zone wide channel device, then the wireless port is adjusted from the wireless management port pending state to the unknown port state.

3. The method for automatically binding a wired switching device and a wireless broadband channel device according to claim 1, characterized in that: Another method for confirming the wireless service port of the wired switching device in step (1) is: For each wireless port, a first perception message is sent through the wireless port. If another wireless port receives the first perception message, the other wireless port is set as a wireless service port.

4. The method for automatically binding a wired switching device and a wireless broadband channel device according to claim 1, characterized in that: There is at least one wired switching device, and each wired switching device is cascaded through a wired management port; One wired switching device corresponds to one wireless network; for each wired switching device, the wired switching device is automatically bound to each wireless zone wide channel device in the corresponding wireless network by executing steps (1)(2)(3).

5. The method for automatically binding a wired switching device and a wireless broadband channel device according to claim 1, characterized in that: In step 2), the wired switching device judges the legitimacy of the identity information, specifically: the wired switching device pre-stores the identity information of each wireless zone bandwidth channel device in a cache pool in advance. If the identity information carried by the second perception response message does not exist in the cache pool, the identity information carried by the second perception response message is deemed to be legal, and the wireless zone bandwidth channel device corresponding to the legal identity information is mapped to the current wireless service port. Otherwise, the identity information is discarded and access to the wireless zone bandwidth channel device corresponding to the identity information is prohibited.

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