Method and network device for realizing automatic switching of independent network ports

Abstract

The invention relates to the technical field of network management, in particular to a method for realizing automatic switching of independent network ports and a network device. The method comprises the following steps that a computer is connected to a control unit through an input network port, the state of the input network port is monitored, whether a new connection request exists or not is recognized, when the new connection request exists, the control unit selects an optimal output network port according to a preset rule, and the control unit commands a change-over switch to establish connection between the input network port and the selected output network port; therefore, the independent connection with the client device of the selected output network port is realized. And after the connection is completed, the control unit continues to monitor the state of the input network port and enters the next monitoring period. According to the method for realizing automatic switching of the independent network ports and the network device, the optimal network port can be automatically selected according to actual requirements, so that resource waste is avoided, network resources are allocated and used most reasonably, and the fault-tolerant capability and the fault recovery speed of the system are also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of network management, and in particular to a method and a network device for realizing automatic switching of independent network ports. Background Art

[0002] Modern Internet applications and services have put forward higher requirements on the stability, speed and security of the network. Whether it is video streaming, online games or remote office, users expect to get a high-quality service experience. Traditional network management methods are difficult to meet these high standards. Modern Internet applications and services have put forward higher requirements on the stability, speed and security of the network. Whether it is video streaming, online games or remote office, users expect to get a high-quality service experience. Traditional network management methods are difficult to meet these high standards. In this context, the stability and rapid response of the network become crucial. However, traditional network management often requires manual monitoring and manual adjustment, which is time-consuming, labor-intensive and error-prone. When a network port fails or the load is too high, it will take a long time to manually switch to the backup network port. Users may experience delays or interruptions, affecting the user experience. Therefore, a method and network device for realizing automatic switching of independent network ports are provided. Summary of the invention

[0003] The purpose of the present invention is to provide a method and a network device for realizing automatic switching of independent network ports, so as to solve the problem proposed in the above background technology that when a network port fails or the load is too high, manual switching to a backup network port will take a long time and the user may experience delays or interruptions.

[0004] To achieve the above object, the present invention provides a method for realizing automatic switching of independent network ports, comprising the following steps: S1. A computer is connected to a control unit via an input network port. The control unit includes multiple output network ports, each of which is connected to a different client device separately. S2, the control unit monitors the status of the input network port and identifies whether there is a new connection request, and can also identify the current connection status of each output network port, including whether it is occupied and which client device is connected; S3. When there is a new connection request, the control unit selects the best output network port according to a preset rule, and the control unit instructs the switch to establish a connection between the input network port and the selected output network port, thereby realizing an independent connection with the client device of the selected output network port; S4. When the independent connection between the input network port and the client device of the selected output network port is successful, the control unit will continue to monitor the status of the input network port and enter the next monitoring cycle.

[0005] As a further improvement of the present technical solution, in S1, the computer is connected to the input network port of the control unit via a network cable. After the physical connection is completed, the control unit first performs initialization configuration and then performs a handshake process of the network protocol.

[0006] As a further improvement of the technical solution, the specific steps of S2 are as follows: S21, the control unit monitors the data flow on the input network port, captures the incoming data packets, and the captured data packets are stored in the buffer; S22, extracting header information from the captured data packet, and parsing relevant information in the header according to the protocol used by the data packet; S23. Once the data packet is parsed to be a connection request, the control unit queries the state table maintained internally in the connection request to obtain current state information of each output network port.

[0007] As a further improvement of the present technical solution, in S23, the current status information of each output network port is specifically used to identify whether each output network port has been occupied. If the output network port has been occupied, the identity information of the client device connected to the output network port can also be identified.

[0008] As a further improvement of the technical solution, the specific steps of S3 are as follows: S31, each time a new connection request is detected, confirming the validity of the request; S32, selecting the best output network port according to the current status information of each output network port and the preset rules. After the selection is completed, the control unit generates a switch control instruction, which can instruct the switch to physically connect the input network port with the selected output network port. In the process of selecting the best output network port, the factors affecting the reliability and bandwidth utilization of the network port are introduced for optimization; S33. After the physical connection is completed, the control unit sends a handshake signal to complete the secondary connection establishment. After the connection is established, the control unit updates its internal state table to record the new connection state.

[0009] As a further improvement of the technical solution, the specific method for confirming the validity of the request in S31 is as follows: Check whether the source address is legal and whether it belongs to the predefined trusted domain IP address segment. Check whether the destination address correctly points to itself or the allowed destination address. Check whether the protocol field is correct and whether the header information is complete. Confirm whether the authentication information in the request matches the preset whitelist. If not, check whether the request comes from a device in the blacklist. At the same time, dynamically adjust the threshold for receiving new connections based on the current load.

[0010] As a further improvement of the present technical solution, the preset rules in S32 are: if the connection requests have different priorities, the output network port with a higher priority is selected first; if multiple output network ports have the same priority; the output network port that is not currently occupied is selected; if multiple output network ports are not occupied, the output network port with a lower current load is selected; if the loads of multiple output network ports are the same, the output network port with the lowest delay is selected.

[0011] As a further improvement of the technical solution, in S32, the best output network port is selected according to the current state of each output network port and a preset rule, as follows: ; in, It is the collection of all unoccupied network ports; Indicates The network ports are not occupied; It is the collection of all network ports; ; in, It is the set of all unoccupied network ports whose priority is greater than or equal to the request priority; For the The priority of each network port; is the priority of the request; If there are high-priority network ports, select the one with the highest priority: ; in, is the currently selected network port; For the The current load of each network port; If there is no high-priority network port, select the one with the lowest load among all unoccupied network ports: ; If there are multiple network ports with the same load, further select the one with the lowest latency: ; in, For the The current latency of each network port; For the unoccupied network ports; For the unoccupied network ports; Finally select the network port: ; in, The network port that is finally selected; In the process of selecting the best output network port, the factors affecting the reliability and bandwidth utilization of the network port are introduced for optimization. The optimization results are as follows: ; in, It is the set of all network ports that are not occupied, have a priority greater than or equal to the request priority, and meet the reliability and bandwidth utilization requirements; It is the minimum reliability threshold of the network port; is the maximum allowed bandwidth utilization; For the The reliability of each network port; For the Bandwidth utilization of each network port; Represents logical and operation; If there are several high-priority network ports, select the network port with the lowest load and latency among the highest priority network ports, and the network port with the highest reliability: ; If there is no network port that meets the high priority condition, select a network port that meets the reliability and service quality requirements from all unoccupied network ports: ; in, The network port selected after optimization; Finally select the network port: ; in, The network port that is finally selected.

[0012] As a further improvement of the present technical solution, in S33, recording the new connection status includes recording which input network port and which output network port have established a connection and a timestamp of the connection.

[0013] On the other hand, the present invention provides a network device for realizing automatic switching of independent network ports, comprising a sensor, a storage, a processor, and a computer program stored in the storage and executable on the processor, wherein the processor implements the steps of the above-mentioned method for realizing automatic switching of independent network ports when executing the computer program.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the method and network device for realizing automatic switching of independent network ports, the optimal network port can be automatically selected according to actual needs, so as to avoid waste of resources and make the most reasonable allocation and use of network resources. At the same time, the automatic selection of the best output network port reduces the need for manual intervention and improves the efficiency of network management. When a network port fails or the load is too high, the system can quickly switch to another healthy network port, and the fault tolerance and fault recovery speed of the system are also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a flow chart of the overall method of the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0017] See also Figure 1 As shown, this embodiment provides a method for realizing automatic switching of independent network ports. The present invention is a method and a network device for realizing automatic switching of independent network ports. A computer is connected to the device through an input network port, and a one-to-one independent connection with a client network device is realized by switching a switch without affecting the normal operation of other network devices. The following steps are included: S1. A computer is connected to a control unit via an input network port. The control unit includes multiple output network ports, each of which is connected to a different client device separately. The control unit is the core part of the network device, responsible for managing and coordinating the work of each output network port. It is an intelligent device with certain processing capabilities and can execute various control logics. At the same time, the control unit may run an operating system or firmware, which can receive data from the input network port and process the data according to predetermined strategies.

[0018] In S1, the computer is connected to the input network port of the control unit through a network cable. After the physical connection is completed, the control unit first performs initialization configuration and then performs the handshake process of the network protocol to ensure that the devices at both ends can communicate normally; Among them, the initialization configuration includes assigning IP addresses and setting network parameters; assigning IP addresses is to give the computer a unique network identifier so that it can be identified in the network. The IP address is the basis for data transmission on the network. Only with a valid IP address can data be exchanged between devices; setting the subnet mask is to define the scope of the network, distinguish between the network part and the host part, so as to correctly send data packets to the local network or the external network, and configure the default gateway address so that the computer knows how to send data packets to destinations outside the local network.

[0019] S2, the control unit monitors the status of the input network port and identifies whether there is a new connection request, and can also identify the current connection status of each output network port, including whether it is occupied and which client device is connected; The specific steps of S2 are as follows: S21, the control unit monitors the data flow on the input network port and captures the incoming data packets. The captured data packets are stored in the buffer, which can prevent the loss of data packets and facilitate subsequent processing, while also leaving enough time for the analysis and processing of data packets; the monitoring cycle is executed based on the arrival of data packets, and the monitoring is performed according to the actual arrival of data packets, rather than a fixed cycle, so that changes in network traffic can be more flexibly responded to, resources can be saved and efficiency can be improved; S22. Extracting header information from the captured data packets. Extracting header information can help the control unit quickly identify basic attributes of the data packets, such as source address, destination address, etc., to provide necessary information for subsequent processing, and parse relevant information in the header according to the protocol used by the data packet. Parsing header information according to different protocols can accurately identify the type and purpose of the data packet to ensure the accuracy of subsequent processing; if it is a TCP protocol, the control unit will check the SYN flag in the TCP header to determine whether it is a connection request. For non-TCP protocols, the control unit will identify the characteristics of the connection request according to the protocol specification to ensure that all types of connection requests can be processed correctly; S23, once the data packet is parsed to be a connection request, the control unit queries the state table maintained internally by the connection request to obtain the current state information of each output network port; The current status information of each output network port specifically identifies whether each output network port has been occupied. If the output network port has been occupied, the identity information of the client device connected to the output network port can also be identified; The occupied status is indicated by the flag bit in the status table. For each output network port, there will be one or more flag bits in the status table to indicate the status of the network port. If a flag bit is set, it means that the corresponding output network port is occupied; otherwise, it is not occupied. The identity information of the client device is confirmed by the MAC address and IP address. Each network device has a unique physical address, namely the MAC address, which can be used to uniquely identify a device. At the network level, the IP address is used to identify the device on the network and is the basis for data packet routing. S3. When there is a new connection request, the control unit selects the best output network port according to a preset rule, and the control unit instructs the switch to establish a connection between the input network port and the selected output network port, thereby realizing an independent connection with the client device of the selected output network port; The specific steps of S3 are as follows: S31, each time a new connection request is detected, first confirm the validity of the request; The specific method to confirm the validity of the request is as follows: Preliminary limited verification: Check whether the source address is legal and belongs to the predefined trust domain IP address segment, check whether the destination address correctly points to itself or the allowed destination address, check whether the protocol field is correct, and whether the header information is complete; confirm whether the authentication information (such as MAC address, IP address, etc.) in the request matches the preset whitelist. If it does not match, check whether the request comes from a device in the blacklist. By checking whether the source address is legal and belongs to the predefined trust domain IP address segment, traffic from unknown or malicious sources can be prevented from entering the network. In addition, checking the destination address can ensure that the request is indeed sent to the current device, thereby avoiding incorrect data processing. Verifying the integrity of the protocol field and header information helps ensure that the data packet follows the correct communication protocol, preventing data transmission failure or system instability due to inconsistent protocols. By matching with the preset whitelist, it can ensure that only authorized devices can establish a connection. At the same time, the blacklist mechanism can help block access attempts from known malicious devices, further strengthening security protection. At the same time, the threshold for accepting new connections can be dynamically adjusted according to the current load. If the system load is high, the threshold can be increased to reduce the acceptance of new connections. In addition, in high-load situations, high-priority requests are processed first, and the processing speed of priority requests is reduced to ensure that the system can still maintain efficient operation during busy periods and give priority to those requests with higher priorities, thereby maintaining service quality. S32, selecting the best output network port according to the current state information of each output network port and the preset rules, and after the selection is completed, the control unit generates a switch control instruction, and the switch control instruction can instruct the switch to physically connect the input network port with the selected output network port; The contents of the switch control instruction include: input network port number, target output network port number, connection request identifier and other information; The control unit sends the command to the switch through an internal communication protocol (such as I2C, SPI, UART, etc.). The internal communication is usually carried out through a dedicated control line to ensure the reliable transmission of the command; The preset rules are: if connection requests have different priorities, the output network port with a higher priority is selected first; if multiple output network ports have the same priority, the output network port that is not currently occupied is selected; if multiple output network ports are not occupied, the output network port with the lower current load is selected; if multiple output network ports have the same load, the output network port with the lowest delay is selected.

[0020] By giving priority to output network ports with higher priorities, it is possible to ensure that critical tasks or high-priority services are processed in a timely manner. For example, in an enterprise network, important business traffic can be given priority to ensure the normal operation of key applications; when multiple output network ports have the same priority, selecting an output network port that is currently unoccupied can avoid the load being concentrated on a few network ports, thereby achieving load balancing and improving the utilization and efficiency of the entire network; if multiple output network ports are not occupied, selecting an output network port with a lower current load can further avoid future congestion and ensure that data packets can be transmitted more smoothly; when the load is the same, selecting the output network port with the lowest delay can minimize the delay in data transmission and improve the user-perceived response speed and service quality.

[0021] This rule ensures efficient use of network resources and avoids resource waste, allowing the network to better cope with changes in various traffic patterns and can be flexibly adjusted according to actual conditions, allowing network managers to make the most appropriate decisions based on current network conditions and business needs; Select the best output network port based on the current status of each output network port and the preset rules, as follows: ; in, It is the collection of all unoccupied network ports; Indicates The network ports are not occupied; It is the collection of all network ports; ; in, It is the set of all unoccupied network ports whose priority is greater than or equal to the request priority; For the The priority of each network port; is the priority of the request; If there are high-priority network ports, select the one with the highest priority: ; in, is the currently selected network port; For the The current load of each network port; If there is no high-priority network port, select the one with the lowest load among all unoccupied network ports: ; If there are multiple network ports with the same load, further select the one with the lowest latency: ; in, For the The current latency of each network port; For the unoccupied network ports; For the unoccupied network ports; Finally select the network port: ; in, The network port that is finally selected; It is the abbreviation of the English word "such that", which means "so that" or "satisfies". It is used to limit conditions and usually appears in constraints or theorem statements to specify the conditions that a variable or expression must satisfy. In the above formula, it represents the elements in the set Must meet In other words, only those priorities Greater than or equal to the request priority Network port will be considered; Indicates that in all Select the load in the network port and delay The smallest network port; otherwise, select the load from the unselected network port and delay The smallest network port.

[0022] In the process of selecting the best output network port, the factors affecting the reliability and bandwidth utilization of the network port are introduced for optimization. The reliability of each network port can be a metric, especially for mission-critical applications. Reliability can be based on factors such as historical error rates or network jitter. Bandwidth utilization can help us avoid selecting network ports that are close to their maximum transmission capacity. After optimization, the details are as follows: ; in, It is the set of all network ports that are not occupied, have a priority greater than or equal to the request priority, and meet the reliability and bandwidth utilization requirements; It is the minimum reliability threshold of the network port; is the maximum allowed bandwidth utilization; For the The reliability of each network port; For the Bandwidth utilization of each network port; Represents a logical AND operation, meaning that the conditions on both sides of the symbol must be true for the entire expression to be true; If there are several high-priority network ports, select the network port with the lowest load and latency among the highest priority network ports, and the network port with the highest reliability: ; If there is no network port that meets the high priority condition, select a network port that meets the reliability and service quality requirements from all unoccupied network ports: ; in, The network port selected after optimization; Finally select the network port: ; in, The network port that is finally selected.

[0023] By introducing reliability This factor ensures that the selected network port has a high reliability history, which helps reduce data transmission interruptions or other problems caused by network port failures. By considering bandwidth utilization This ensures that the selected network port will not be overloaded, thus maintaining a good data transmission rate.

[0024] S33, after the physical connection is completed, the control unit sends a handshake signal (such as TCP's three-way handshake) to complete the secondary connection establishment. After the connection is established, the control unit updates its internal state table to record the new connection state; Recording the new connection status includes recording which input network port is connected to which output network port and the timestamp of the connection; data can be transferred between the computer and the selected client device without affecting other established connections. If the connection is no longer needed, the control unit disconnects the current connection and reconfigures the connection as needed; S4. When the independent connection between the input network port and the client device of the selected output network port is successful, the control unit will continue to monitor the status of the input network port and enter the next monitoring cycle.

[0025] Embodiment 2: This embodiment provides a network device for realizing automatic switching of independent network ports, including a sensor, a storage, a processor, and a computer program stored in the storage and executable on the processor. When the processor executes the computer program, the steps of the method for realizing automatic switching of independent network ports are realized.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A method for realizing automatic switching of independent network ports, characterized in that: The following steps are involved: S1. A computer is connected to a control unit via an input network port. The control unit includes multiple output network ports, each of which is connected to a different client device separately. S2, the control unit monitors the status of the input network port and identifies whether there is a new connection request, and can also identify the current connection status of each output network port, including whether it is occupied and which client device is connected; S3. When there is a new connection request, the control unit selects the best output network port according to a preset rule, and the control unit instructs the switch to establish a connection between the input network port and the selected output network port, thereby realizing an independent connection with the client device of the selected output network port; S4. When the independent connection between the input network port and the client device of the selected output network port is successful, the control unit will continue to monitor the status of the input network port and enter the next monitoring cycle.

2. The method for realizing automatic switching of independent network ports according to claim 1, characterized in that: In S1, the computer is connected to the input network port of the control unit via a network cable. After the physical connection is completed, the control unit first performs initialization configuration and then performs a handshake process of the network protocol.

3. The method for realizing automatic switching of independent network ports according to claim 2, characterized in that: The specific steps of S2 are as follows: S21, the control unit monitors the data flow on the input network port, captures the incoming data packets, and the captured data packets are stored in the buffer; S22, extracting header information from the captured data packet, and parsing relevant information in the header according to the protocol used by the data packet; S23. Once the data packet is parsed to be a connection request, the control unit queries the state table maintained internally in the connection request to obtain current state information of each output network port.

4. The method for realizing automatic switching of independent network ports according to claim 3, characterized in that: In S23, the current status information of each output network port is specifically used to identify whether each output network port has been occupied. If the output network port has been occupied, the identity information of the client device connected to the output network port can also be identified.

5. The method for realizing automatic switching of independent network ports according to claim 4, characterized in that: The specific steps of S3 are as follows: S31, each time a new connection request is detected, confirming the validity of the request; S32, selecting the best output network port according to the current status information of each output network port and the preset rules. After the selection is completed, the control unit generates a switch control instruction, which can instruct the switch to physically connect the input network port with the selected output network port. In the process of selecting the best output network port, the factors affecting the reliability and bandwidth utilization of the network port are introduced for optimization; S33. After the physical connection is completed, the control unit sends a handshake signal to complete the secondary connection establishment. After the connection is established, the control unit updates its internal state table to record the new connection state.

6. The method for realizing automatic switching of independent network ports according to claim 5, characterized in that: The specific method for confirming the validity of the request in S31 is as follows: Check whether the source address is legal and whether it belongs to the predefined trusted domain IP address segment. Check whether the destination address correctly points to itself or the allowed destination address. Check whether the protocol field is correct and whether the header information is complete. Confirm whether the authentication information in the request matches the preset whitelist. If not, check whether the request comes from a device in the blacklist. At the same time, dynamically adjust the threshold for receiving new connections based on the current load.

7. The method for realizing automatic switching of independent network ports according to claim 6, characterized in that: The preset rule in S32 is: if the connection requests have different priorities, the output network port with a higher priority is selected first; if multiple output network ports have the same priority, the output network port that is not currently occupied is selected; If multiple output network ports are not occupied, the output network port with the lower current load is selected; if the loads of multiple output network ports are the same, the output network port with the lowest delay is selected.

8. The method for realizing automatic switching of independent network ports according to claim 7, characterized in that: In S32, the best output network port is selected according to the current state of each output network port and the preset rules, as follows: ； in, It is the collection of all unoccupied network ports; Indicates The network ports are not occupied; It is the collection of all network ports; ； in, It is the set of all unoccupied network ports whose priority is greater than or equal to the request priority; For the The priority of each network port; is the priority of the request; If there are high-priority network ports, select the one with the highest priority: ； in, is the currently selected network port; For the The current load of each network port; If there is no high-priority network port, select the one with the lowest load among all unoccupied network ports: ； If there are multiple network ports with the same load, further select the one with the lowest latency: ； in, For the The current latency of each network port; For the unoccupied network ports; For the unoccupied network ports; Finally select the network port: ； in, The network port that is finally selected; In the process of selecting the best output network port, the factors affecting the reliability and bandwidth utilization of the network port are introduced for optimization. The optimization results are as follows: ； in, It is the set of all network ports that are not occupied, have a priority greater than or equal to the request priority, and meet the reliability and bandwidth utilization requirements; It is the minimum reliability threshold of the network port; is the maximum allowed bandwidth utilization; For the The reliability of each network port; For the Bandwidth utilization of each network port; Represents logical and operation; If there are several high-priority network ports, select the network port with the lowest load and latency among the highest priority network ports, and the network port with the highest reliability: ； If there is no network port that meets the high priority condition, select a network port that meets the reliability and service quality requirements from all unoccupied network ports: ； in, The network port selected after optimization; Finally select the network port: ； in, The network port that is finally selected.

9. The method for realizing automatic switching of independent network ports according to claim 8, characterized in that: In S33, recording the new connection status includes recording which input network port and which output network port have established a connection and a timestamp of the connection.

10. A network device for realizing automatic switching of independent network ports, comprising a sensor, a storage, a processor, and a computer program stored in the storage and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for realizing automatic switching of independent network ports as described in any one of claims 1 to 9 are implemented.

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