CN114389949A - Route upgrading method, electronic equipment and storage medium - Google Patents

Abstract

The embodiment of the application relates to the technical field of communication transmission and discloses a route upgrading method, electronic equipment and a storage medium. The route upgrading method is applied to network equipment and comprises the following steps: receiving a backup instruction of a central controller, and backing up a current main routing table according to the backup instruction; receiving an upgrading instruction sent by a central controller under the condition that all network equipment is successfully backed up, wherein the central controller is in communication connection with all the network equipment; upgrading the routing software according to the upgrading instruction, and routing according to the backup main routing table in the upgrading process of the routing software; and after receiving a switching instruction sent by the central controller under the condition that each network device is successfully upgraded, routing according to a routing table generated by the upgraded routing software. In the embodiment of the application, the problems of interruption of service flow and the like caused by route loss due to processes such as restarting and the like when the dynamic routing software is updated are avoided, and the dynamic routing software of the network equipment is smoothly updated.

Description

Routing upgrade method, electronic device and storage medium

technical field

The present invention relates to the technical field of communication transmission, and in particular, to a route upgrade method, an electronic device and a storage medium.

Background technique

In a network based on Software Defined Wide Area Network (SD-WAN, Software Defined Wide Area Network), by using dynamic routing software, multiple network devices in an enterprise can realize autonomous dynamic routing learning.

When upgrading/replacing the dynamic routing software, there is a risk of errors in the routing information of the network equipment. For example, during the upgrade process, there will be data deletion, data input, data update, etc., which may lead to loss or error of routing information, affecting the running Routing actions in , such as the process of restarting after the upgrade is completed, may also cause the routing of service traffic to be interrupted. If an enterprise has multiple network devices and needs to upgrade/replace the dynamic routing software, it will result in multiple errors or interruptions of the enterprise's business traffic.

SUMMARY OF THE INVENTION

The main purpose of the embodiments of the present application is to propose a route upgrade method, electronic device and storage medium, which are used to ensure the normal operation of service traffic and avoid traffic errors or interruptions.

In order to achieve the above purpose, an embodiment of the present application provides a route upgrade method, which is applied to a network device, including: receiving a backup instruction from a central controller, and backing up the current main routing table according to the backup instruction; The upgrade instructions sent when all backups are successful, and the central controller communicates with each network device; upgrades the routing software according to the upgrade instructions, and performs routing according to the backup main routing table during the upgrade process of the routing software; After the switching instruction sent by the central controller under the condition that all network devices have been upgraded successfully, routing is performed according to the routing table generated by the upgraded routing software.

In order to achieve the above purpose, an embodiment of the present application also provides a route upgrade method, which is applied to a central controller, including: sending a backup instruction to a network device for the network device to back up the current main routing table according to the backup instruction; obtaining each network device When the backup status of each network device is successful, an upgrade command is sent to each network device, so that the network device can upgrade the routing software according to the upgrade command and perform routing according to the backup main routing table during the upgrade process of the routing software; The upgrade status of each network device sends a switching command to each network device when all network devices are successfully upgraded; the switching command is used to instruct the network device to perform routing according to the routing table generated by the upgraded routing software.

To achieve the above object, an embodiment of the present application further provides an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor , the instructions are executed by at least one processor, so that the at least one processor can execute the above-mentioned route upgrade method applied to the network device, or can execute the route upgrade method applied to the central controller.

In order to achieve the above purpose, the embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. The controller's route upgrade method.

In this application, routing upgrade is performed by receiving and executing the instructions issued by the central controller, including informing all devices to back up the dynamic routing table into a static routing table before upgrading, so as to switch the business traffic of the enterprise to the back up during the upgrade process routing table. That is to say, the upgrade process does not affect the transmission of service traffic. The original service is routed according to the backup routing table. After the routing software is upgraded, it is switched to the routing table generated by the upgraded routing software to avoid the process of restarting the dynamic routing software during the upgrade. This leads to the loss of routes, which leads to problems such as interruption of service traffic, and realizes the smooth upgrade of dynamic routing software of network equipment. In addition, the central controller determines whether to proceed to the next step according to the feedback status of each network device in each upgrade stage, so that the upgrade progress of each network device is consistent. The upgrade status of each network device is consistent, avoiding the state where some upgrades are successful and some are not upgraded or failed, thereby avoiding the impact on service traffic caused by inconsistent device states during the entire upgrade process.

Description of drawings

1 is a flowchart of a route upgrade method provided according to an embodiment of the present application;

2 is a schematic diagram of a route upgrade method provided according to an embodiment of the present application;

3 is a flowchart of a route upgrade method provided according to another embodiment of the present application;

4 is a schematic diagram of a route upgrade method provided according to another embodiment of the present application;

FIG. 5 is a schematic diagram of an electronic device provided according to an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clear, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that, in each embodiment of the present application, many technical details are provided for the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be realized. The following divisions of the various embodiments are for the convenience of description, and should not constitute any limitation on the specific implementation of the present application, and the various embodiments may be combined with each other and referred to each other on the premise of not contradicting each other.

The terms "first" and "second" in the embodiments of the present application are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of this application, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a system, product or device comprising a series of components or units is not limited to the listed components or units, but may optionally also include components or units not listed, or Other parts or units inherent in the equipment. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

quagga/frr is a dynamic routing software that implements routing protocols such as RIP (Routing Information Protocol, Routing Information Protocol), OSPF (Open Shortest Path First, Open Shortest Path First), BGP (Border Gateway Protocol, Border Gateway Protocol). The network built based on SD-WAN (Software Defined Wide Area Network, software-defined wide area network realizes interconnection networking), through the use of quagga/frr software, realizes the automatic dynamic routing learning of multiple network devices in the enterprise, and completes the networking. However, upgrading/replacing the dynamic routing software will cause the loss of routes from other devices to this device, resulting in interruption of service traffic. Business traffic was interrupted several times.

One embodiment of the present invention relates to a route upgrade method. Applied to network equipment, the specific process is shown in Figure 1.

Step 101: Receive a backup instruction from the central controller, and back up the current main routing table according to the backup instruction.

Step 102: Receive an upgrade instruction sent by the central controller under the condition that all network devices are backed up successfully, and the central controller is in communication connection with each network device.

Step 103: Upgrade the routing software according to the upgrade instruction, and perform routing according to the backup main routing table during the upgrade process of the routing software.

Step 104, after receiving the switching instruction sent by the central controller under the condition that all network devices are upgraded successfully, perform routing according to the routing table generated by the upgraded routing software.

The implementation details of the route upgrade method of the present embodiment will be specifically described below, and the following contents are only provided for the convenience of understanding, and are not necessary for implementing this solution.

In step 101, a backup instruction from the central controller is received, and the current main routing table is backed up according to the backup instruction. That is, the central controller can determine the progress of the upgrade process, and the network device performs a preliminary backup after receiving an instruction from the central controller. The backup result is used to route the data to be transmitted when the route upgrade is performed. Optionally, when the central controller determines that all network devices that need to be upgraded are in normal connection with the central processing unit, or that all network devices that need to be upgraded are online, the process in this example is started, so as to avoid The upgrade efficiency is affected by external problems such as communication connections.

In one example, the priority of the backup main routing table is higher than the priority of the current main routing table. If the priority of the main routing table after backup is higher than the priority of the current main routing table, after the main routing table after backup is generated, the data routing will be transferred to the main routing table after backup due to the priority. Realization, that is, automatically switching from the original main routing table (the current main routing table) to the backed up main routing table, and implementing data routing with the information in the backed up main routing table.

In one example, after backing up the current main routing table according to the backup instruction, the method further includes: if a deletion backup instruction sent by the central controller in the case of a backup failure in each network device is received, deleting the backup backup instruction according to the deletion backup instruction the main routing table data and end the upgrade. That is, since the number of upgrade devices is not limited, and multiple devices (or a communication network composed of multiple devices) are allowed to be upgraded together, it is possible that when multiple network devices are backed up together, some devices may not be backed up. In the case of success, the data that has been backed up needs to be deleted at this time; for example, the parameters in the network devices that have been successfully backed up and those that have failed to be backed up should be deleted, so that the next time the backup is re-executed, it will not be affected by the data that failed this backup. At the same time, clearing the backup data can avoid routing errors caused by partial switching of the routing after the backup is completed.

In one example, after backing up the current main routing table according to the backup instruction, the method further includes: sending a backup status to the central controller, where the backup status includes backup success or backup failure; or receiving and replying to the first query message sent by the central controller, The first query message is used to query the backup status of the network device; after upgrading the routing software according to the upgrade instruction, it further includes: determining the upgrade status based on the number of destination IPs of the dynamic routes generated after the upgrade of the routing software is completed; sending the upgrade and upgrade to the central controller The upgrade status includes upgrade success or upgrade failure; or receiving and replying to the second query message sent by the central controller, where the second query message is used to query the upgrade status of the network device. That is, the information exchange between the central controller and each network device can be actively requested by the central processor to the network device, and each network device feeds back to the central processor; or each network device actively sends the status to the central processing unit. The state includes a backup state and an upgrade state. The central processor may send a first query message to the network device for querying the backup status of the network; and may send a second query message to the network device for querying the upgrade status of the network. That is to say, the information exchange between the central processing unit and the network device is not limited to being initiated by one party, and both parties can act as the initiator of the information exchange to increase the way of status feedback/acquisition.

Wherein, for the determination of the upgrade status, the upgrade status can be determined by the number of destination IPs of the dynamic routing after the routing software completes the upgrade. Or the number of target IPs in the backup main routing table is the same, it is judged that the routing software is upgraded successfully. During the feedback of the upgrade status, the network device can directly feed back the upgrade status, that is, the upgrade is successful or the upgrade fails, or the network device can feed back the number of destination IPs of the dynamic route, the original main routing table or the backup main routing table. The number of destination IPs for the central processor to perform judgment processing to reduce the computing pressure of the network device; further, the network device can receive and reply to the third query message sent by the central controller, and the third query message is used to query all The number of destination IPs of the dynamic routing and the number of destination IPs of the original main routing table or the backup main routing table are described for the central processing unit to judge and process.

In addition, if the number of destination IPs of the dynamic routing after the upgrade is not the same as the number of destination IPs in the original main routing table, or the number of destination IPs in the backup main routing table, enter the periodic check, and in the second If the time threshold or other preset time is still inconsistent, the feedback routing software upgrade fails.

In step 102, an upgrade instruction sent by the central controller under the condition that all network devices are backed up successfully is received, and the central controller is in communication connection with each network device. When the central processing unit obtains the information that each network device has been successfully backed up, it will issue an upgrade instruction, that is, push each network device to enter the next stage of upgrade.

In step 103, the routing software is upgraded according to the upgrade instruction, and in the process of upgrading the routing software, routing is performed according to the backup main routing table.

The routing upgrade is completed according to the upgrade instruction issued by the central controller. Since the backup has been completed in the previous stage, while the upgrade is performed, the backup main routing table is used for routing, so that the routing process is not affected by the upgrade operation. Specifically, routing data may be replaced, lost, or incomplete during the routing upgrade process, which is not enough to ensure that the data routing process is the same as the non-upgrade period. Therefore, the original main routing table cannot meet the routing requirements in the routing upgrade; however, this implementation In the method, there is a backup process before the upgrade, and the backup main routing table is used for routing during the upgrade, so that the data routing requirement can be fulfilled while the routing upgrade is completed.

In step 104, after receiving the handover instruction sent by the central controller under the condition that all network devices are upgraded successfully, routing is performed according to the routing table generated by the upgraded routing software. That is, after the routing upgrade is completed, the backup main routing table is switched to the routing table generated by the upgraded routing software for routing.

In one example, after receiving the switching instruction sent by the central controller under the condition that all network devices have been successfully upgraded, perform routing according to the routing table generated by the upgraded routing software, including: After the switching instruction is sent when all network devices are successfully upgraded, the backup main routing table is deleted according to the switching instruction; after the backup main routing table is deleted, it is switched to the routing table generated by the upgraded routing software for routing. That is, routing table switching can be realized by the action of deleting the backup main routing table, and after deleting the backup main routing table, the routing table generated by the upgraded routing software can be independently searched for routing. For example, when the priority of the backup main routing table is higher than that of the original main routing table and the routing table generated by the upgraded routing software, if the routing software is successfully upgraded and a new routing table is generated, delete the routing table with higher priority. The backup main routing table can autonomously switch to the new routing table for routing.

In addition, after the deletion operation is completed, the network device can feed back the deletion status to the central controller, such as successful deletion or failure to delete; if the deletion fails, it will receive a deletion instruction issued by the central controller again until the deletion is successful. The deletion operation may also add a time threshold as one of the criteria for judging success or failure.

In an example, the successful backup further includes: completing the backup within a preset first time threshold; the successful upgrade further includes: completing the upgrade within a preset second time threshold. That is, set a time threshold for the backup and upgrade process, and the backup/upgrade is successful only when the backup is completed within the corresponding time, and it is considered to be a failure if the corresponding time threshold is exceeded; the time used for the backup and upgrade process is constrained to avoid taking a long time. Time is not yet able to draw conclusions about upgrade or backup results, improving execution efficiency. That is, the criterion for judging that the execution of the backup or upgrade state is completed is included in the preset time, so as to ensure the execution efficiency of the solution. It can be understood that the relationship between the first time threshold and the second time threshold is not limited, and may be the same or different, allowing adjustment according to actual needs.

For ease of understanding, the above embodiments are described below with an actual execution process. It can be understood that, it is only for illustration, and does not limit the above embodiments substantially. Refer to Figure 2, including but not limited to:

S1. The central controller notifies all network devices of the enterprise to perform the first upgrade stage: backup routing.

S2. The device receives the backup routing instruction from the central controller, and copies the current main routing table of the device into a policy routing table with a higher priority (that is, the above-mentioned backup main routing table), so that the traffic of the device is automatically Switch to the policy routing table with higher priority. Since the policy routing table is static, it is not affected by routing software upgrades, thus ensuring uninterrupted service traffic.

S3. After all devices complete the backup routing operation, report the backup results to the central controller. After receiving the message that all devices are backed up normally, the central controller notifies all devices to perform the second stage: replace the routing software. If the network device fails to be successfully backed up in the first stage, or the central controller does not receive the backup routing result reported by the device within the specified time, the central controller will not notify each network device to perform the second stage.

S4. After all the devices of the enterprise receive the replacement routing software command from the central controller, they start to upgrade the routing software, and the routing software can also be replaced. Take the replacement of qugga software with frr software as an example: first install the frr software, then Copy the quagga configuration file to the frr configuration file directory. Since the listening port used by the frr and quaga components is the same, you must first close the quagga component of this enterprise, and then start the frr software.

S5. After replacing the enterprise's qugga software with frr software, the frr software will automatically generate and learn dynamic routes. After upgrading frr, check whether the dynamic routes generated by the frr software are normal: compare the dynamic routes of the generated main routing table Whether the number of destination IP segments is the same as the number of destination IP segments in the policy routing table replicated in the first phase. If they are consistent, the upgrade is considered successful; if they are inconsistent, the upgrade is considered unsuccessful. Each network device judges the upgrade result, and then reports the upgrade result to the central controller. Wherein, if it is a routing software upgrade process, the aforementioned steps of replacing different software will not be generated, and only self-upgrade is required.

S6. After receiving the message that all network devices are normally upgraded, the central controller notifies all network devices to perform the third stage: delete the backup route. If there is a network device that is not successfully upgraded in the second stage, or the central controller does not receive the upgrade result reported by the network device within the specified time, the central controller will not notify all devices to go to the third stage, and the traffic will continue to run in the first stage. The policy routing table backed up in the first stage does not affect the business traffic.

S7. After receiving the command to delete the backup route from the central controller, all network devices of the enterprise start to delete the backup route. After the backup route table is deleted, the traffic automatically reruns the main route table generated after the upgrade, and all network devices delete the backup route. Routing table, and report the deletion result to the central controller.

S8. After receiving the message that all network devices have normally deleted the backup route, the central controller ends the upgrade process, and sets the upgrade result as successful.

In this embodiment, routing upgrade is performed by receiving and executing the instructions issued by the central controller, including informing all devices to back up the dynamic routing table into a static routing table before upgrading, so as to switch the enterprise business traffic to the backup during the upgrade process after the routing table. That is to say, the upgrade process does not affect the transmission of service traffic. The original service is routed according to the backup routing table. After the routing software is upgraded, it is switched to the routing table generated by the upgraded routing software to avoid the process of restarting the dynamic routing software during the upgrade. This leads to the loss of routes, which leads to problems such as interruption of service traffic, and realizes the smooth upgrade of dynamic routing software of network equipment. In addition, the central controller determines whether to proceed to the next step according to the feedback status of each network device in each upgrade stage, so that the upgrade progress of each network device is consistent. The upgrade status of each network device is consistent, avoiding the state where some upgrades are successful and some are not upgraded or failed, thereby avoiding the impact on service traffic caused by inconsistent device states during the entire upgrade process.

The steps of the above various methods are divided only for the purpose of describing clearly. During implementation, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as the same logical relationship is included, they are all within the protection scope of this patent. ;Adding insignificant modifications to the algorithm or process or introducing insignificant designs, but not changing the core design of the algorithm and process are all within the scope of protection of this patent.

One embodiment of the present invention relates to a route upgrade method. Applied to the central controller, the specific process is shown in Figure 3.

Step 201, sending a backup instruction to the network device for the network device to back up the current main routing table according to the backup instruction;

Step 202: Acquire the backup status of each network device, and send an upgrade instruction to each network device under the condition that each network device is backed up successfully, so that the network device can upgrade the routing software according to the upgrade instruction, and during the upgrade process of the routing software, according to the backup data. The main routing table for routing. Wherein, acquiring the backup status of each network device includes: receiving a backup status sent by each network device, where the backup status includes backup success or backup failure; or sending a first query message to each network device, and receiving each network device's response to the first query message reply; the first query message is used to query the backup status of the network device. That is, both the network device and the central processor are allowed to act as active initiators of state acquisition/feedback, increasing the way for the central processor to acquire the backup state.

Step 203: Acquire the upgrade status of each network device, and send a switching instruction to each network device when all network devices are successfully upgraded; the switching instruction is used to instruct the network device to perform routing according to the routing table generated by the upgraded routing software. Wherein, acquiring the upgrade status of each network device includes: receiving the upgrade status sent by each network device, where the upgrade status includes upgrade success or upgrade failure; or sending a second query message to each network device, and receiving each network device's response to the second query message reply; the second query message is used to query the upgrade status of the network device. That is, both the network device and the central processor are allowed to act as active initiators of status acquisition/feedback, increasing the way for the central processor to acquire the upgrade status.

For ease of understanding, the above embodiments are described below with an actual execution process. It can be understood that, it is only for illustration, and does not limit the above embodiments substantially.

Enterprise 1's Beijing headquarters and Xiamen branch use SD-WAN (the enterprise networking equipment includes CPE (CustomerPremise Equipment, literally translated as customer pre-installation equipment), POP (Point of Presence, access point). CPE, POP and central control The device establishes a long connection, receives and reports messages. The CPE establishes tunnels with POP and POP-POP, and generates dynamic routes through dynamic routing software to realize interconnection between devices (each device has a route to any other device) . With reference to the structure of Figure 4, the specific upgrade process includes but is not limited to:

A1. The central controller determines whether all the network devices of the enterprise are normally connected to it, and the status is online. When all the devices of the enterprise are online, the controller starts the upgrade process.

A2. The central controller sends a backup instruction to all CPE and POP devices of the enterprise 1, so as to realize the backup of the main routing table.

A3. When the CPE and POP devices receive the backup routing message, first check whether the routing table with the highest priority in the ip rule, such as table252, exists, or if there is residual data. If it exists, delete the routing table [ip rule del table252], and in the Before the backup routing operation, clear the routing table [ip route flush table 252] to ensure that the routing table does not have any remaining routes. The main routing table is backed up by copying the destination IP address segment of the main routing table and the next hop to routing table 252. After copying all the routes, check whether the main table routing is consistent with the policy routing table (that is, the main routing table after backup) Consistent; confirm whether the destination network segments of the main table route exist in the policy routing table, and if they exist, the backup operation is successful; otherwise, the backup is considered to have failed, and the routing table 252 is added after the backup is successful, because the priority of the routing table 252 is higher than that of the main route. Table height (linux system, the priority is determined according to the id of the routing table, the id of the main routing table is usually 254, and the priority is lower than the aforementioned 252 routing table), after adding routing table 252, all traffic is cut to the walking routing table 252. Set the id of the policy routing table (backup routing table) to 252, because the traffic that originally went to the main routing table should go to the policy routing table, but it should not affect the traffic to go to other policy routing tables.

A4. After the CPE and POP devices have completed their backup operations, they report the results of the backup operations to the central controller.

A5. After receiving the backup success message of all devices, the central controller determines that the [backup routing] of the first stage is successful, and can perform the second stage of [replace dynamic routing software] to notify all devices to replace the dynamic routing software. If the device backup route fails in the first stage, the central controller notifies all network devices to delete the backup routing table and restore to the state before the upgrade. This round of upgrade ends, and the upgrade result is a failure.

A6. The CPE and POP devices receive the [Replace Dynamic Routing Software] message sent by the central controller, and perform the operation of replacing the dynamic software. Taking the replacement of quagga to frr as an example, the process of replacing routing software for CPE and POP devices is different:

Steps performed by the CPE device: Install the dynamic routing software frr, and then copy the configuration file of the original routing software quagga to the configuration file directory of the frr software. Since the listening ports of the two software are the same, the software quagga should be closed first, and then frr should be started.

Steps performed by the POP device: The routing software is installed on the POP device, and each enterprise runs in separate processes. When replacing the routing software for the first time, install the dynamic routing software frr first, and then replace the routing software of the current enterprise: copy the configuration file under the enterprise ID directory of quagga to the enterprise ID configuration file directory of the frr software. Kill the quagga process of the company, and then start the frr process of the company. Processes of other companies cannot be operated, and quagga cannot be stopped directly.

A7. Close the quagga software (CPE)/close the enterprise's quagga process (POP), the dynamic routes learned by the main routing table will disappear, but the traffic will go to the backup policy routing table at this time, so the traffic will not be interrupted. After the frr process is started, frr will automatically relearn the dynamic routing to the main table, and check whether the destination IP address segment of the dynamic routing table of the main table is consistent with the backup policy routing table every preset time (for example, 5s). If the routing software is successful, it reports the success information to the central controller. If it is inconsistent, it is checked periodically. The maximum check time threshold is set. For example, the maximum check time is 90s. After 90s, the destination IP address segment of the main routing table is still inconsistent with the backup policy routing table. Then it fails to report the replacement of the routing software.

A8. After receiving the message that all devices have successfully replaced the routing software, the central controller determines that the second stage [replace the routing software] is successful, and can proceed to the third stage [delete the backup routing table] to notify all devices to delete the backup routing surface. If a device fails to replace the routing software in the second stage, human intervention is required. After checking the cause of the failure, after the routing software of the device is replaced normally, the central controller notifies all network elements to delete the backup routing table in the third stage.

A9. The CPE and POP devices receive the [Delete Backup Routing Table] message, delete the routing table 252 first, then clear all routes in the routing table 252, and switch traffic back to the main routing table. Each device reports the operation result of deleting the backup routing table to the central controller.

A10. After receiving the successful message of deleting the routing table of all the devices, the central controller determines that the [deleting the backup routing table] in the third stage is successful, and completes the upgrade of all the devices of the enterprise. The upgrade is over, and the upgrade result is successful.

In this embodiment, the instructions issued by the central processing unit to the network devices perform routing upgrade, including informing all devices to back up the dynamic routing table into a static routing table before the upgrade, so as to switch the enterprise service traffic to the back up during the upgrade process routing table. That is to say, the upgrade process does not affect the transmission of service traffic. The original service is routed according to the backup routing table. After the routing software is upgraded, it is switched to the routing table generated by the upgraded routing software to avoid the process of restarting the dynamic routing software during the upgrade. This leads to the loss of routes, which leads to problems such as interruption of service traffic, and realizes the smooth upgrade of dynamic routing software of network equipment. And the central controller can determine whether to proceed to the next step according to the feedback status of each network device in each upgrade stage, so that the upgrade progress of each network device is consistent. The upgrade status of each network device is consistent, avoiding the state where some upgrades are successful and some are not upgraded or failed, thereby avoiding the impact on service traffic caused by inconsistent device states during the entire upgrade process. In this embodiment, the central controller controls the entire upgrade process, and informs all network devices to back up the dynamic routing table to a static routing table with a high priority before the upgrade, so that the enterprise service traffic is switched to the backup routing table for upgrade, which solves the problem of upgrade. In the case of dynamic routing software, the loss of routes leads to the interruption of service traffic, so that the dynamic routing software of network devices can be smoothly upgraded.

An embodiment of the present invention relates to an electronic device, as shown in FIG. 5 , comprising at least one processor 301; and a memory 302 communicatively connected to the at least one processor 301; wherein the memory 302 stores data that can be accessed by Instructions executed by the at least one processor 301, the instructions are executed by the at least one processor 301, so that the at least one processor 301 can execute the above routing upgrade method applied to a network device, or can execute a method applied to a network device. The route upgrade method of the central controller.

The memory and the processor are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors and various circuits of the memory. The bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium. The data processed by the processor is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor.

The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. Instead, memory may be used to store data used by the processor in performing operations.

One embodiment of the present invention relates to a computer-readable storage medium storing a computer program. The above method embodiments are implemented when the computer program is executed by the processor.

That is, those skilled in the art can understand that all or part of the steps in the method for implementing the above embodiments can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium and includes several instructions to make a device ( It may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the present invention, and in practical applications, various changes in form and details can be made without departing from the spirit and the spirit of the present invention. scope.

Claims (10)

1. A route upgrading method is applied to network equipment and comprises the following steps:

receiving a backup instruction of a central controller, and backing up a current main routing table according to the backup instruction;

receiving an upgrade instruction sent by the central controller under the condition that the backup of each network device is successful, wherein the central controller is in communication connection with each network device;

upgrading the routing software according to the upgrading instruction, and routing according to the backup main routing table in the upgrading process of the routing software;

and after receiving a switching instruction sent by the central controller under the condition that each network device is upgraded successfully, routing according to a routing table generated by the upgraded routing software.

2. The route upgrade method according to claim 1, wherein the priority of the backup master routing table is higher than the priority of the current master routing table.

3. The method for upgrading a route according to claim 2, wherein after receiving a switching instruction sent by the central controller when each of the network devices is upgraded successfully, performing routing according to a routing table generated by upgraded routing software, includes:

after receiving a switching instruction sent by the central controller under the condition that each network device is upgraded successfully, deleting the backed-up main routing table according to the switching instruction;

and after the backup main routing table is deleted, switching to the routing table generated by the upgraded routing software for routing.

4. The route upgrade method according to claim 1, wherein after the backing up the current primary routing table according to the backup instruction, the method further comprises:

and if a backup deleting instruction sent by the central controller under the condition that the backup fails in each network device is received, deleting the backed-up main routing table data according to the backup deleting instruction, and finishing the upgrading.

5. The route upgrade method according to claim 1, wherein after the backing up the current primary routing table according to the backup instruction, the method further comprises:

sending a backup state to the central controller, wherein the backup state comprises a backup success or a backup failure;

or receiving and replying a first query message sent by the central controller, wherein the first query message is used for querying the backup state of the network equipment;

after the routing software is upgraded according to the upgrading instruction, the method further comprises the following steps:

determining an upgrading state based on the target IP number of the dynamic route generated after the route upgrading software is completed;

sending the upgrading state to the central controller, wherein the upgrading state comprises upgrading success or upgrading failure;

or receiving and replying a second query message sent by the central controller, wherein the second query message is used for querying the upgrade state of the network equipment.

6. The route upgrade method according to any one of claims 1 to 5, wherein the backup is successful, further comprising: completing backup within a preset first time threshold;

the upgrading is successful, and the method further comprises the following steps: and completing upgrading within a preset second time threshold.

7. A route upgrading method is applied to a central controller and is characterized by comprising the following steps:

sending a backup instruction to network equipment, so that the network equipment can back up a current main routing table according to the backup instruction;

obtaining the backup state of each network device, sending an upgrading instruction to each network device under the condition that each network device is successfully backed up, so that the network devices can upgrade routing software according to the upgrading instruction and carry out routing according to a backed-up main routing table in the upgrading process of the routing software;

obtaining the upgrading state of each network device, and sending a switching instruction to each network device under the condition that each network device is upgraded successfully; and the switching instruction is used for indicating the network equipment to perform routing according to a routing table generated by the upgraded routing software.

8. The route upgrade method according to claim 7, wherein the obtaining the backup status of each of the network devices comprises:

receiving backup states sent by each network device, wherein the backup states comprise backup success or backup failure;

or sending a first query message to each network device, and receiving the reply of each network device to the first query message; the first query message is used for querying the backup state of the network equipment;

the obtaining of the upgrade status of each network device includes:

receiving an upgrade state sent by each network device, wherein the upgrade state comprises upgrade success or upgrade failure;

or sending a second query message to each network device, and receiving a reply of each network device to the second query message; the second query message is used for querying the upgrade status of the network device.

9. An electronic device, comprising:

at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a route upgrade method as claimed in any one of claims 1 to 6, or to perform a route upgrade method as claimed in any one of claims 7 to 8.

10. A computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the route upgrade method of any one of claims 1 to 6, or is capable of implementing the route upgrade method of any one of claims 7-8.

Images