CN112564983B - Data transmission method, device, computer system and medium - Google Patents

Abstract

The present disclosure provides a data transmission method, including: based on the configured address information of the first SDWAN controller, establishing a first long connection channel with the first SDWAN controller; based on the address information of the second SDWAN controller, Establish a second long connection channel with the second SDWAN controller; receive the working status information of the first SDWAN controller through the first long connection channel, and receive the working status information of the second SDWAN controller through the second long connection channel; When receiving the working state of the first SDWAN controller as the main working state, transmit business data through the first long connection channel; when receiving the switching of the working states of the first SDWAN controller and the second SDWAN controller Next, switch the business data to the second long connection channel for transmission. The present disclosure also provides a data transmission device, a computer system and a storage medium.

Description

Data transmission method, device, computer system and medium

technical field

The present disclosure relates to the technical field of network communication, and more specifically, to a data transmission method, device, computer system and storage medium.

Background technique

With the rapid development of Internet technology, the operation of enterprises is increasingly inseparable from the support of the network. The failure of network equipment will cause business interruption, so it is very important for network communication to ensure business continuity in the event of a failure.

For a conventional local area network, based on VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol), node switching can be performed transparently when a network failure occurs without affecting data communication between hosts.

However, VRRP is a solution based on the same local area network. In the generalized network scenario, the application of this protocol is limited. Therefore, in the generalized network scenario, it is impossible to ensure transparent node switching when a network failure occurs without affecting data communication between hosts, resulting in service interruption.

Contents of the invention

In view of this, the present disclosure provides a data transmission method, device, computer system and storage medium.

One aspect of the present disclosure provides a data transmission method applied to a CPE terminal, including: establishing a first long connection channel with the first SDWAN controller based on configured address information of the first SDWAN controller; Based on the address information of the second SDWAN controller, establish a second long connection channel with the second SDWAN controller; receive the working status information of the first SDWAN controller through the first long connection channel, and pass The second long connection channel receives the working state information of the second SDWAN controller, and at the same time, one of the working states of the first SDWAN controller and the working state of the second SDWAN controller is the main working state , and the other is a standby working state; when receiving the working state of the first SDWAN controller as the main working state, transmit service data through the first long connection channel; after receiving the first SDWAN controller When the working states of the controller and the second SDWAN controller are switched, the service data is switched to the second long connection channel for transmission.

Another aspect of the present disclosure provides a data transmission method, which is applied to an SDWAN controller platform, and the SDWAN controller platform includes a first SDWAN controller and a second SDWAN controller, including: according to the received data from the CPE terminal A first connection request including the address information of the first SDWAN controller, establishing a first long connection channel between the first SDWAN controller and the CPE terminal; according to the received request from the CPE terminal including the second A second connection request for the address information of the SDWAN controller, establishing a second long connection channel between the second SDWAN controller and the CPE terminal; sending the work of the first SDWAN controller through the first long connection channel Status information, sending the working status information of the second SDWAN controller through the second long connection channel, at the same time one of the working status of the first SDWAN controller and the working status of the second SDWAN controller The main working state, the other is the standby working state; when the working state of the first SDWAN controller is the main working state, the service data is transmitted through the first long connection channel; in the first SDWAN controller When the working status of the first SDWAN controller and the second SDWAN controller is switched, send the switched working status of the first SDWAN controller and the second SDWAN controller to the CPE terminal; through the second SDWAN controller The two long connection channels transmit the service data.

Another aspect of the present disclosure provides a data transmission device applied to a CPE terminal, including: a first establishment module, configured to establish a relationship with the first SDWAN controller based on the configured address information of the first SDWAN controller The first long connection channel between; the second establishment module is used to establish the second long connection channel between the second SDWAN controller and the second SDWAN controller based on the address information of the second SDWAN controller; the first receiving module is used for Receive the working status information of the first SDWAN controller through the first long connection channel, receive the working status information of the second SDWAN controller through the second long connection channel, and at the same time, the first SDWAN One of the working state of the controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; the first transmission module is used to receive the working state of the first SDWAN controller In the case of the main working state, the service data is transmitted through the first long connection channel; the switching module is used to switch the working state of the first SDWAN controller and the second SDWAN controller after receiving Next, switch the service data to the second long connection channel for transmission.

Another aspect of the present disclosure provides a data transmission device, which is applied to an SDWAN controller platform, and the SDWAN controller platform includes a first SDWAN controller and a second SDWAN controller, including: a third establishment module, configured to The received first connection request from the CPE terminal including the address information of the first SDWAN controller establishes the first long connection channel between the first SDWAN controller and the CPE terminal; the fourth establishment module uses Establishing a second long connection channel between the second SDWAN controller and the CPE terminal according to the received second connection request including the address information of the second SDWAN controller from the CPE terminal; the first sending module , for sending the working status information of the first SDWAN controller through the first long connection channel, sending the working status information of the second SDWAN controller through the second long connection channel, and at the same time the One of the working state of the first SDWAN controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; the second transmission module is used when the first SDWAN controller is working In the case of the main working state, the service data is transmitted through the first long connection channel; the second sending module is used to switch between the working states of the first SDWAN controller and the second SDWAN controller In this case, the switched working status of the first SDWAN controller and the second SDWAN controller is sent to the CPE terminal; the third transmission module is used to transmit the service through the second long connection channel data.

Another aspect of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the above method when executed.

Another aspect of the present disclosure provides a computer program comprising computer-executable instructions for implementing the method as described above when executed.

Another aspect of the present disclosure provides a computer system, including: one or more processors; a storage device for storing one or more programs, wherein, when the one or more programs are executed by the one or more When executed by one or more processors, the one or more processors implement the method as described above.

According to an embodiment of the present application, based on the configured address information of the first SDWAN controller, establish a first long connection channel with the first SDWAN controller; based on the address information of the second SDWAN controller, establish a connection with the second SDWAN The second long connection channel between the controllers; receive the working status information of the first SDWAN controller through the first long connection channel, receive the working status information of the second SDWAN controller through the second long connection channel, and at the same time the first One of the working state of the SDWAN controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; when the working state of the first SDWAN controller is received as the main working state, through the second A long connection channel transmits service data; in the case of receiving a switch between the working states of the first SDWAN controller and the second SDWAN controller, switch the service data to the second long connection channel for transmission. Since the terminal establishes long connection paths with at least two SDWAN controllers in the network management and control platform, when at least two SDWAN controllers switch between active and standby states, the terminal switches the service data transmission channel, which can keep the service data transmission uninterrupted , to maintain business continuity.

Description of drawings

The above and other objects, features and advantages of the present disclosure will be more clearly described through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

FIG. 1 schematically shows an exemplary system diagram to which a data transmission method and device can be applied according to an embodiment of the present disclosure;

FIG. 2 schematically shows a flow chart of a data transmission method according to an embodiment of the present disclosure;

FIG. 3A schematically shows a flow chart of a method for transmitting service data through a first long connection channel according to an embodiment of the present disclosure;

FIG. 3B schematically shows a flowchart of a method for switching service data to a second long connection channel for transmission according to an embodiment of the present disclosure;

FIG. 4 schematically shows a flowchart of a data transmission method according to another embodiment of the present disclosure;

FIG. 5A schematically shows a flowchart of a method for transmitting service data through a first long connection channel according to an embodiment of the present disclosure;

FIG. 5B schematically shows a flowchart of a method for transmitting service data through a second long connection channel according to an embodiment of the present disclosure;

FIG. 6 schematically shows a flowchart of a data transmission method according to another embodiment of the present disclosure;

Fig. 7 schematically shows a block diagram of a data transmission device according to an embodiment of the present disclosure;

Fig. 8 schematically shows a block diagram of a data transmission device according to another embodiment of the present disclosure; and

Fig. 9 schematically shows a block diagram of a computer system according to an embodiment of the present disclosure.

Detailed ways

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.

The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The terms "comprising", "comprising", etc. used herein indicate the presence of stated features, steps, operations and/or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

All terms (including technical and scientific terms) used herein have the meaning commonly understood by one of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted to have a meaning consistent with the context of this specification, and not be interpreted in an idealized or overly rigid manner.

Where expressions such as "at least one of A, B, and C, etc." are used, they should generally be interpreted as those skilled in the art would normally understand the expression (for example, "having A, B, and C A system of at least one of "shall include, but not be limited to, systems with A alone, B alone, C alone, A and B, A and C, B and C, and/or A, B, C, etc. ). Where expressions such as "at least one of A, B, or C, etc." are used, they should generally be interpreted as those skilled in the art would normally understand the expression (for example, "having A, B, or C A system of at least one of "shall include, but not be limited to, systems with A alone, B alone, C alone, A and B, A and C, B and C, and/or A, B, C, etc. ).

With the rapid development of Internet technology, the operation of enterprises is increasingly inseparable from the support of the network. From basic e-mail, to office automation, to various information systems and platforms, there is an urgent need for a strong Strong support network.

WAN (Wide Ares Netwoek, generalized network) can provide a larger geographical range of computer networks than conventional LANs. SDWAN (Software-Defined WAN, software-defined generalized network) defines network control capabilities through software for connection Enterprise networks, data centers, Internet applications, and cloud services in generalized network scenarios.

It is very important for network communication to ensure uninterrupted business in the event of network failure.

For a conventional LAN, VRRP can be used to ensure transparent node switching when a network failure occurs without affecting data communication between hosts. VRRP (Virtual Routing Redundancy Protocol) protocol is a fault-tolerant active-standby protocol, which ensures that when the next-hop route of the host fails, another router will replace the failed router to work. When a network failure occurs, node switching is performed transparently without affecting data communication between hosts.

The VRRP protocol stipulates that multiple routers belong to a virtual router and provide a virtual IP address and MAC address to the outside. The host uses the virtual router as the default gateway. Inside the virtual router, there is a master router (Master) that provides external services at the same time. Generally, the master router is generated by an election algorithm. It has a virtual IP for external services and provides various network functions, such as ARP (Address Resolution Protocol, Address Resolution Protocol) request, ICMP (Internet Control Message Protocol, Internet Control Message Protocol) data forwarding, etc. The standby router is composed of other physical routers in the virtual router. It does not have an external virtual IP, nor does it provide network functions externally. It only receives VRRP status notification information from the primary router. When the main router fails, the standby router in the role of backup (BACK UP) will re-elect, and a new main router will enter the role of MASTER to continue to provide external services. The whole switch is completely transparent to users.

The solution based on VRRP is that the master router periodically sends VRRP messages in multicast mode to notify other routers in the backup group that they are working normally. This given solution is based on the same local area network and the virtual IP is a fixed IP. It is not suitable for deployment scenarios across computer rooms and public and private cloud (or virtualization) environments, because in these two scenarios, The virtual IP cannot be configured on the SDWAN management and control platform device, and it is impossible to guarantee transparent node switching without affecting the data communication between the hosts when the network fails.

In view of this, the embodiments of the present disclosure provide a data transmission method and device. The method includes: based on the configured address information of the first SDWAN controller, establishing a first long connection channel with the first SDWAN controller; based on the address information of the second SDWAN controller, establishing a connection with the second SDWAN controller The second long connection channel between; receive the working status information of the first SDWAN controller through the first long connection channel, receive the working status information of the second SDWAN controller through the second long connection channel, and at the same time the first SDWAN controller One of the working states of the working state of the first SDWAN controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; when the working state of the first SDWAN controller is received as the main working state, through the first long connection The channel transmits service data; in the case of receiving the switching of the working states of the first SDWAN controller and the second SDWAN controller, switch the service data to the second long connection channel for transmission.

Fig. 1 schematically shows an exemplary system diagram to which a data transmission method and device can be applied according to an embodiment of the present disclosure. It should be noted that FIG. 1 is only an example of a system to which the embodiment of the present disclosure can be applied, to help those skilled in the art understand the technical content of the present disclosure, but it does not mean that the embodiment of the present disclosure cannot be applied to other devices , system, environment or scenario.

As shown in FIG. 1 , a system architecture 100 according to this embodiment may include a terminal device 110 and a network management and control platform 120 , and the network management and control platform 120 includes a server 121 and a server 122 .

The terminal device 110 may be an SDWAN CPE (Customer Premise Equipment, client device), and both the server 121 and the server 122 may be SDWAN controllers. The master controller can be elected between the server 121 and the server 122 based on the VRRP protocol. The terminal device 110 respectively establishes a persistent connection with the server 121 and the server 122 , and the server 121 and the server 122 may send respective active and standby states to the terminal device 110 .

The terminal device 110 reports business data to the server in the main state through the long connection channel with the server in the main state (for example, the server in the main state is server 121), but still maintains a long connection with both server 121 and server 122 . If the active/standby state of the server 121 and the server 122 is switched, both the server 121 and the server 122 will notify the terminal device 110 of the change of its own active/standby state. When the terminal device 110 determines that the active/standby state of the server 121 and the server 122 is switched (such as the server 121 is switched from the active state to the standby state, and the server 122 is switched from the standby state to the active state), the terminal device 110 passes the business data through the The path between servers (server 122 ) in the new main state is reported to the server (server 122 ) in the new main state, so as to ensure that the business is not interrupted.

According to the embodiment of the present disclosure, the logic of switching between active and standby channels is processed on the terminal device 110, and a long connection is maintained with both server 121 and server 122. prevent unnecessary business interruption. Compared with the method of configuring virtual IP in a conventional local area network to ensure uninterrupted business, the embodiment of the present disclosure does not need to configure a virtual IP, and does not require that the deployment environment must be in the same local area network or must provide a fixed IP. or virtualization) environment to ensure uninterrupted business.

It should be understood that the numbers of terminal devices and servers in FIG. 1 are only illustrative. According to the implementation needs, there can be any number of terminal devices, networks and servers.

Fig. 2 schematically shows a flowchart of a data transmission method according to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, the subject of execution of the method may be an SDWAN CPE terminal device (hereinafter referred to as a CPE terminal). The CPE terminal interacts with the SDWAN controller in the network management and control platform. The network management and control platform may include at least two SDWAN controllers. The embodiment of the present disclosure will be described with the network management and control platform including the first SDWAN controller and the second SDWAN controller.

As shown in FIG. 2, the method includes operations S201-S205.

In operation S201, based on the configured address information of the first SDWAN controller, a first long connection channel with the first SDWAN controller is established.

According to the embodiment of the present disclosure, the service IP and port address of the SDWAN controller (such as the first SDWAN controller) currently in the main working state in the network management and control platform may be configured on the CPE terminal. The CPE terminal initiates a connection request to the first SDWAN controller through the configured service IP and port address of the first SDWAN controller, and the first SDWAN controller returns a successful connection message to the CPE terminal, and the connection between the CPE terminal and the first SDWAN controller A long connection channel (the first long connection channel, which may also be called a path or a link) is established between them.

According to the embodiment of the present disclosure, after the CPE terminal establishes the first long connection channel with the first SDWAN controller, the first SDWAN controller may send information that it is in the main working state to the CPE terminal. It can be understood that each SDWAN controller will send its own working status information to the CPE terminal after establishing a long connection with the CPE terminal for the first time.

It can be understood that the CPE terminal can initiate an authentication request before initiating a connection request, and the first SDWAN controller receives the authentication request and returns an authentication response message to the CPE terminal, and the authentication response message includes authentication information (token) for identity verification, then CPE terminals can use tokens for identity authentication when initiating connection requests or subsequent service requests.

In operation S202, based on the address information of the second SDWAN controller, a second long connection channel with the second SDWAN controller is established.

According to the embodiment of the present disclosure, the first SDWAN controller and the second SDWAN controller in the network management and control platform are respectively configured with the service address of the other party, specifically, the service IP address of the second SDWAN controller is configured on the first SDWAN controller and port address, the service IP address and port address of the first SDWAN controller are configured on the second SDWAN controller.

A short connection channel can also be established between the first SDWAN controller and the CPE terminal, and the first SDWAN controller can send the service IP address and port address of the second SDWAN controller to the CPE terminal through the short connection channel, so that the CPE terminal can also Establish a long connection channel with the second SDWAN controller.

According to the embodiment of the present disclosure, the first SDWAN controller and the second SDWAN controller in the network management and control platform respectively configure the service address of the other party, so that only one SDWAN controller needs to be configured at the CPE terminal end. After establishing a long connection, send the service address of another SDWAN controller to the CPE terminal, and the CPE terminal can establish a long connection with another SDWAN controller.

It can be understood that the CPE terminal establishes a second long connection channel through the address information of the second SDWAN controller and the address information of the second SDWAN controller. After the second long connection channel is established, the second SDWAN controller can send itself to the CPE terminal. Information in a standby working state.

In operation S203, the working status information of the first SDWAN controller is received through the first long connection channel, and the working status information of the second SDWAN controller is received through the second long connection channel.

According to an embodiment of the present disclosure, at the same time, one of the working states of the first SDWAN controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state. The first SDWAN controller sends its own working status through the first long connection channel, and the second SDWAN controller sends its own working status through the second long connection channel.

In operation S204, if the working state of the first SDWAN controller is received as the main working state, the service data is transmitted through the first long connection channel.

According to an embodiment of the present disclosure, if a message that the first SDWAN controller in the network management and control platform is currently in the active state is received through the first long connection channel, the CPE terminal communicates with the first SDWAN controller through the first long connection channel Business data can be transferred.

In operation S205, in the case of receiving a switching of the working states of the first SDWAN controller and the second SDWAN controller, switch the service data to the second long connection channel for transmission.

According to an embodiment of the present disclosure, through the first long connection channel, it is also possible to wait to receive a message that the working state of the first SDWAN controller changes.

According to the embodiment of the present disclosure, through the second long connection channel with the second SDWAN controller, the CPE terminal can receive a message that the working status of the second SDWAN controller changes.

Exemplarily, in the network management and control platform, due to the failure of the first SDWAN controller, the second SDWAN controller becomes the main working state, then the second SDWAN controller will send information that its own working state is the main working state to the CPE terminal .

Exemplarily, in the network management and control platform, the first SDWAN controller is switched from the main working state to the standby working state, and the second SDWAN controller is switched from the standby working state to the main working state, then the first SDWAN controller will send the CPE terminal After sending the information that its own working state is switched to the standby working state, the second SDWAN controller will send the information that its own working state is switched to the main working state to the CPE terminal.

According to the embodiment of the present disclosure, after receiving the switching of the working states of the first SDWAN controller and the second SDWAN controller, the CPE terminal determines that the second SDWAN controller is in the main working state, and will carry out the service channel on the local end. Switching, switching the service data to the second long connection channel for transmission, can avoid service interruption.

According to an embodiment of the present application, based on the configured address information of the first SDWAN controller, a first long connection channel with the first SDWAN controller is established, and based on the address information of the second SDWAN controller, a connection with the second SDWAN controller is established. The second long connection channel between the controllers receives the working status information of the first SDWAN controller through the first long connection channel, and receives the working status information of the second SDWAN controller through the second long connection channel. After receiving the first When the working state of the SDWAN controller is the main working state, the business data is transmitted through the first long connection channel, and when the working state of the first SDWAN controller and the second SDWAN controller are switched, the business data is transferred to Switch to the second long connection channel for transmission. Since the terminal establishes long connection paths with at least two SDWAN controllers in the network management and control platform, when at least two SDWAN controllers switch between active and standby states, the terminal switches the service data transmission channel, which can keep the service data transmission uninterrupted , to maintain business continuity.

Fig. 3A schematically shows a flowchart of a method for transmitting service data through a first long connection channel according to an embodiment of the present disclosure.

As shown in FIG. 3A, the method includes operations S301-S303.

In operation S301, a first authentication request is sent to a first SDWAN controller.

In operation S302, first authentication information from the first SDWAN controller is received, the first authentication information indicates that the first authentication request is authenticated successfully.

In operation S303, the service data is transmitted through the first long connection channel according to the first authentication information.

According to the embodiment of this application, the business data of the CPE terminal is transmitted through the first long connection channel, and the business data needs to be authenticated before transmission, and only the CPE terminal that has passed the authentication can interact with the business data, and the unauthenticated or the authentication fails CPE terminals cannot communicate with the network management and control platform.

Specifically, the CPE terminal initiates an authentication request through a short connection channel with the first SDWAN controller, and the first SDWAN controller receives the authentication request and returns an authentication response message to the CPE terminal through the short connection. Verified authentication information (token), when the CPE initiates a service request, the token can be used for identity authentication, and if the authentication is passed, the service data can be transmitted through the first long connection channel.

Fig. 3B schematically shows a flowchart of a method for switching service data to a second long connection channel for transmission according to an embodiment of the present disclosure.

As shown in FIG. 3B, the method includes operations S311-S313.

In operation S311, a second authentication request is sent to the second SDWAN controller.

In operation S312, receiving second authentication information from the second SDWAN controller, the second authentication information indicates that the authentication of the second authentication request is passed.

In operation S313, the service data is transmitted through the second long connection channel according to the second authentication information.

According to the embodiment of this application, the business data of the CPE terminal is switched to the second long connection channel for transmission, and the business data needs to be authenticated before transmission. Only the CPE terminals that pass the authentication can interact with the business data, and those that are not authenticated or fail to pass the authentication CPE terminals cannot communicate with the network management and control platform.

Specifically, the CPE terminal initiates an authentication request through a short connection with the second SDWAN controller, and the second SDWAN controller receives the authentication request and returns an authentication response message to the CPE terminal through the short connection. The authentication response message includes The authentication information (token), the CPE can use the token for identity authentication when initiating a service request, and if the authentication is passed, the service data can be transmitted through the second long connection channel.

Fig. 4 schematically shows a flowchart of a data transmission method according to another embodiment of the present disclosure.

According to an embodiment of the present disclosure, the subject of execution of the method may be a network management and control platform, and the network management and control platform may include at least two SDWAN controllers, and the network management and control platform includes a first SDWAN controller and a second SDWAN controller. illustrate.

As shown in Fig. 4, the method includes operations S401-S406.

In operation S401, according to the received first connection request including address information of the first SDWAN controller from the CPE terminal, a first long connection channel between the first SDWAN controller and the CPE terminal is established.

According to an embodiment of the present disclosure, if the first SDWAN controller in the network management and control platform is currently in the main working state, and the CPE terminal is configured with the service IP address and port address of the first SDWAN controller currently in the main working state, then the CPE The terminal first establishes a first long connection channel with the first SDWAN controller according to the IP address and port address of the first SDWAN controller.

In operation S402, according to the received second connection request including the address information of the second SDWAN controller from the CPE terminal, a second long connection channel between the second SDWAN controller and the CPE terminal is established.

According to an embodiment of the present disclosure, the first SDWAN controller and the second SDWAN controller in the network management and control platform are respectively configured with the service address of the other party, specifically, the service IP address of the second SDWAN controller is configured on the first SDWAN controller. For the address and port address, the service IP address and port address of the first SDWAN controller are configured on the second SDWAN controller. The CPE terminal can establish a short connection with the first SDWAN controller, and the first SDWAN controller can send the service IP address and port address of the second SDWAN controller to the CPE terminal through the short connection. The IP address and the port address establish a second long connection channel with the second SDWAN controller.

In operation S403, the working status information of the first SDWAN controller is sent through the first long connection channel, and the working status information of the second SDWAN controller is sent through the second long connection channel.

According to an embodiment of the present disclosure, at the same moment, one of the working states of the first SDWAN controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state.

According to the embodiment of the present application, after the CPE terminal establishes the first long connection channel with the first SDWAN controller, the first SDWAN controller may send information that it is in the main working state to the CPE terminal. After the CPE terminal establishes the second long connection channel with the address information of the second SDWAN controller, the second SDWAN controller may send information that it is in a standby working state to the CPE terminal.

It can be understood that each SDWAN controller will send its own working status information to the CPE terminal after establishing a long connection with the CPE terminal for the first time.

In operation S404, when the working state of the first SDWAN controller is the main working state, the service data is transmitted through the first long connection channel.

According to the embodiment of the present disclosure, if the working state of the first SDWAN controller is the main working state, the first SDWAN controller sends information about its main working state through the first long connection channel, and the CPE terminal and the first SDWAN controller pass the first long connection channel A long connection channel for business data transmission.

In operation S405, in the case that the working states of the first SDWAN controller and the second SDWAN controller are switched, the switched working states of the first SDWAN controller and the second SDWAN controller are sent to the CPE terminal.

According to the embodiment of this application, if the active/standby state of the first SDWAN controller and the second SDWAN controller is switched, the first SDWAN controller and the second SDWAN controller will send their new working state information to the CPE terminal .

Exemplarily, in the network management and control platform, due to the failure of the first SDWAN controller, the second SDWAN controller switches to the main working state, then the second SDWAN controller will send the message that its working state is switched to the main working state to the CPE terminal information.

Exemplarily, in the network management and control platform, due to manual settings, the first SDWAN controller switches from the main working state to the standby working state, and the second SDWAN controller switches from the standby working state to the main working state, then the first SDWAN controller It will send the information that its own working state is switched to the standby working state to the CPE terminal, and the second SDWAN controller will send the information that its own working state is switched to the main working state to the CPE terminal.

In operation S406, the service data is transmitted through the second long connection channel.

According to the embodiment of this application, at the CPE terminal end, after receiving the information that the second SDWAN controller is in the main working state, the CPE terminal will switch the service channel at the local end, and switch the service data to the second long connection channel The transmission is performed, so that the CPE terminal and the second SDWAN controller perform service data transmission through the second long connection channel, which can avoid service interruption.

According to the embodiment of the present application, the first long connection channel between the first SDWAN controller and the CPE terminal is established, the second long connection channel between the second SDWAN controller and the CPE terminal is established, and the transmission is sent through the first long connection channel The working state information of the first SDWAN controller, send the working state information of the second SDWAN controller through the second long connection channel, when the working state of the first SDWAN controller is the main working state, through the first long connection channel To transmit business data, when the working status of the first SDWAN controller and the second SDWAN controller are switched, send the switched working status of the first SDWAN controller and the second SDWAN controller to the CPE terminal, through the second The long connection channel transmits business data. Since at least two SDWAN controllers in the network management and control platform respectively establish long connection paths with the terminal side, the terminal is notified when the SDWAN controller switches between active and standby states, so that the terminal side can switch the service data transmission channel, and the service data transmission can be maintained Maintain business continuity without interruption.

Fig. 5A schematically shows a flowchart of a method for transmitting service data through a first long connection channel according to an embodiment of the present disclosure.

As shown in FIG. 5A, the method includes operations S501-S502.

In operation S501, third authentication information is sent to the CPE terminal according to the received third authentication request from the CPE terminal. The third authentication information indicates that the third authentication request is passed.

In operation S502, service data is transmitted according to the received third authentication information from the CPE terminal.

According to the embodiment of the present application, when the first SDWAN controller is in the main working state, the service data of the CPE terminal is transmitted through the first long connection channel; when the second SDWAN controller is in the main working state, the service data of the CPE terminal Transmit through the second long connection channel. However, business data needs to be authenticated before transmission. Only certified CPE terminals can interact with business data, and unauthenticated or failed authentication CPE terminals cannot communicate with the network management and control platform.

Exemplarily, the CPE terminal initiates an authentication request through a short connection with the first SDWAN controller, and the first SDWAN controller receives the authentication request and returns an authentication response message to the CPE terminal through the short connection. Verified authentication information (token), when the CPE initiates a service request, the token can be used for identity authentication. If the authentication is passed, the service data can be transmitted through the first long connection channel, and the first SDWAN controller receives the service data sent by the CPE terminal .

Fig. 5B schematically shows a flowchart of a method for transmitting service data through a second long connection channel according to an embodiment of the present disclosure.

As shown in FIG. 5B, the method includes operations S511-S512.

In operation S511, according to the received fourth authentication request from the CPE terminal, send fourth authentication information to the CPE terminal, where the fourth authentication information indicates that the fourth authentication request is passed.

In operation S512, service data is transmitted according to the received fourth authentication information from the CPE terminal.

According to the embodiment of this application, the CPE terminal initiates an authentication request through a short connection with the second SDWAN controller, and the second SDWAN controller receives the authentication request and returns an authentication response message to the CPE terminal through the short connection, and the authentication response message includes Authentication information (token) for identity verification. When the CPE initiates a service request, the token can be used for identity authentication. If the authentication is passed, the service data can be transmitted through the second long connection channel, and the second SDWAN controller receives the CPE terminal. business data.

Fig. 6 schematically shows a flowchart of a data transmission method according to another embodiment of the present disclosure.

According to the embodiment of the present application, the network management and control platform includes SDWAN controller A and SDWAN controller B, and SDWAN controller A is currently in the main working state. First configure the service IP and port of SDWAN controller B on SDWAN controller A; configure the service IP and port of SDWAN controller A on SDWAN controller B; add the CPE terminal on SDWAN controller A, and Configure the address of SDWAN controller A and the basic information required for the device to go online on the CPE terminal. Among them, multiple CPE terminals can be added to SDWAN controller A. The basic information required for the device to go online includes the device verification code, device serial number, and so on. After the above configuration is complete, perform the operations shown in Figure 6.

As shown in FIG. 6, the method includes operations S601-S609.

In operation S601, the CPE terminal sends an authentication request to SDWAN controller A, and receives the authentication result and the token used for identity verification. When the subsequent CPE terminal sends service data to the network management and control platform, the network management and control platform will verify the token.

In operation S602, the CPE terminal sends a request to establish a persistent connection to SDWAN controller A, and SDWAN controller A returns a message of establishing a persistent connection successfully and returns information that the SDWAN controller itself is currently in the main working state.

In operation S603, the CPE terminal sends the basic information of the CPE and the token to the SDWAN controller A, and the SDWAN controller A returns the configured IP address and port of the SDWAN controller B to the CPE terminal after verifying that the token passes.

In operation S604, the CPE terminal transmits service data through a persistent connection with the SDWAN controller A, and regularly updates the token to prevent it from being expired.

In operation S605, the CPE terminal establishes a persistent connection with SDWAN controller B according to the IP address and port of SDWAN controller B returned by SDWAN controller A, for receiving the working status information of SDWAN controller B.

In operation S606, the SDWAN controller A and the SDWAN controller B notify the CPE terminal when the active/standby state switching occurs. The CPE terminal decides whether to switch the long connection path according to the status of SDWAN controller A and SDWAN controller B. For example, if SDWAN controller A is in the standby working state and SDWAN controller B is in the main working state, the CPE terminal is triggered to switch the data transmission path.

In operation S607, the CPE terminal determines to switch the long connection path, then sends an authentication request to the SDWAN controller B, and receives the authentication result and token.

In operation S608, the CPE terminal sends CPE basic information and token to the SDWAN controller B, and the SDWAN controller B returns the configured IP address and port of the SDWAN controller A to the CPE.

In operation S609, the CPE terminal uses the persistent connection with the SDWAN controller B to transmit data, and regularly updates the token to prevent it from being expired.

It can be understood that the interaction between the CPE and the SDWAN controller is not only performed through long connection channels, but also through short connections. For example, the interaction of the address information of the SDWAN controller is completed using a short connection; the status information of the SDWAN controller and the transmission of business data are all carried out through a long connection.

The authentication between CPE and SDWAN controller can also be done through a short connection, and only devices that pass the authentication can transmit business data.

Fig. 7 schematically shows a block diagram of a data transmission device according to an embodiment of the present disclosure.

As shown in FIG. 7 , the data transmission device 700 includes a first establishing module 710 , a second establishing module 720 , a first receiving module 730 , a first transmitting module 740 and a switching module 750 .

The first establishment module 710 is configured to establish a first long connection channel with the first SDWAN controller based on the configured address information of the first SDWAN controller.

The second establishing module 720 is configured to establish a second long connection channel with the second SDWAN controller based on the address information of the second SDWAN controller.

The first receiving module 730 is used to receive the working status information of the first SDWAN controller through the first long connection channel, and receive the working status information of the second SDWAN controller through the second long connection channel. One of the working state and the working state of the second SDWAN controller is the main working state, and the other is the standby working state.

The first transmission module 740 is configured to transmit service data through the first long connection channel when receiving the working state of the first SDWAN controller as the main working state.

The switching module 750 is configured to switch the business data to the second long connection channel for transmission when receiving the switching of the working states of the first SDWAN controller and the second SDWAN controller.

According to the embodiment of the present application, the data transmission device 700 further includes a second receiving module.

The second receiving module is configured to receive address information of the second SDWAN controller before the second establishing module 720 establishes the second long connection channel with the second SDWAN controller.

According to an embodiment of the present application, receiving the switching of the working state of the first SDWAN controller and the second SDWAN controller includes: receiving the switching of the working state of the first SDWAN controller to the standby working state through the first long connection channel Information; the information that the working state of the second SDWAN controller is switched to the main working state is received through the second long connection channel.

According to the embodiment of this application, the first transmission module 740 is specifically configured to send a first authentication request to the first SDWAN controller; receive the first authentication information from the first SDWAN controller, and the first authentication information represents the authentication of the first authentication request Pass; according to the first authentication information, transmit the service data through the first long connection channel.

According to an embodiment of the present application, the switching module 750 is specifically configured to send a second authentication request to the second SDWAN controller; receive second authentication information from the second SDWAN controller, and the second authentication information indicates that the second authentication request is authenticated; According to the second authentication information, the service data is transmitted through the second long connection channel.

Fig. 8 schematically shows a block diagram of a data transmission device according to another embodiment of the present disclosure.

As shown in FIG. 8 , the data transmission device 800 includes a third establishment module 810 , a fourth establishment module 820 , a first transmission module 830 , a second transmission module 840 , a second transmission module 850 and a third transmission module 860 .

The third establishment module 810 is configured to establish a first long connection channel between the first SDWAN controller and the CPE terminal according to the received first connection request including the address information of the first SDWAN controller from the CPE terminal.

The fourth establishment module 820 is configured to establish a second long connection channel between the second SDWAN controller and the CPE terminal according to the received second connection request from the CPE terminal that includes the address information of the second SDWAN controller.

The first sending module 830 is used to send the working status information of the first SDWAN controller through the first long connection channel, and send the working status information of the second SDWAN controller through the second long connection channel. One of the working state and the working state of the second SDWAN controller is the main working state, and the other is the standby working state.

The second transmission module 840 is configured to transmit service data through the first long connection channel when the working state of the first SDWAN controller is the main working state.

The second sending module 850 is configured to send the switched working states of the first SDWAN controller and the second SDWAN controller to the CPE terminal when the working states of the first SDWAN controller and the second SDWAN controller are switched.

The third transmission module 860 is configured to transmit service data through the second long connection channel.

According to the embodiment of the present application, the data transmission device 800 further includes a third sending module.

The third sending module is configured to send the address information of the second SDWAN controller before the fourth establishing module 820 establishes the second long connection channel between the second SDWAN controller and the CPE terminal.

According to the embodiment of the present application, the second sending module 850 is specifically configured to send the information that the working state of the first SDWAN controller is switched to the standby working state through the first long connection channel; send the information of the second SDWAN controller through the second long connection channel Information about switching the working status of the main working status.

According to the embodiment of the present application, the second transmission module 840 is specifically configured to send the third authentication information to the CPE terminal according to the received third authentication request from the CPE terminal, the third authentication information indicates that the third authentication request is passed; The received third authentication information from the CPE terminal transmits service data.

According to the embodiment of the present application, the third transmission module 860 is specifically configured to send fourth authentication information to the CPE terminal according to the received fourth authentication request from the CPE terminal, and the fourth authentication information indicates that the fourth authentication request is passed; according to receiving The received fourth authentication information from the CPE terminal transmits service data.

Modules, sub-modules, units, any multiple of sub-units according to the embodiments of the present disclosure, or at least part of the functions of any multiple of them may be implemented in one module. Any one or more of modules, submodules, units, and subunits according to the embodiments of the present disclosure may be implemented by being divided into multiple modules. Any one or more of modules, submodules, units, and subunits according to embodiments of the present disclosure may be at least partially implemented as hardware circuits, such as field programmable gate arrays (FPGAs), programmable logic arrays (PLAs), system-on-chip, system-on-substrate, system-on-package, application-specific integrated circuit (ASIC), or hardware or firmware that may be implemented by any other reasonable means of integrating or packaging circuits, or in a combination of software, hardware, and firmware Any one of these implementations or an appropriate combination of any of them. Alternatively, one or more of the modules, submodules, units, and subunits according to the embodiments of the present disclosure may be at least partially implemented as computer program modules, and when the computer program modules are executed, corresponding functions may be performed.

For example, any number of the first building module 710, the second building module 720, the first receiving module 730, the first transmission module 740, and the switching module 750 can be implemented in one module/unit/subunit, or one of them Any one module/unit/subunit can be split into multiple modules/units/subunits. Alternatively, at least part of the functions of one or more modules/units/subunits of these modules/units/subunits can be combined with at least part of the functions of other modules/units/subunits, and combined in one module/unit/subunit realized in. According to an embodiment of the present disclosure, at least one of the first building module 710, the second building module 720, the first receiving module 730, the first transmitting module 740, and the switching module 750 may be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), programmable logic array (PLA), system-on-chip, system-on-substrate, system-on-package, application-specific integrated circuit (ASIC), or any other reasonable It can be realized by hardware or firmware, or by any one of the three implementation methods of software, hardware and firmware, or by an appropriate combination of any of them. Alternatively, at least one of the first building module 710, the second building module 720, the first receiving module 730, the first transmitting module 740 and the switching module 750 may be at least partially implemented as a computer program module, when the computer program module is At runtime, the corresponding function can be performed.

It should be noted that the part of the data transmission device in the embodiments of the present disclosure corresponds to the part of the data transmission method in the embodiments of the present disclosure, and the description of the data transmission device part refers to the part of the data transmission method, and details are not repeated here.

Fig. 9 schematically shows a block diagram of a computer system suitable for implementing the method described above according to an embodiment of the present disclosure. The computer system shown in FIG. 9 is only an example, and should not limit the functions and scope of use of the embodiments of the present disclosure.

As shown in FIG. 9 , a computer system 900 according to an embodiment of the present disclosure includes a processor 901 that can be loaded into a random access memory (RAM) 903 according to a program stored in a read-only memory (ROM) 902 or loaded from a storage section 908 Various appropriate actions and processing are performed by the program. Processor 901 may include, for example, a general-purpose microprocessor (eg, a CPU), an instruction set processor and/or related chipsets and/or a special-purpose microprocessor (eg, an application-specific integrated circuit (ASIC)), and the like. Processor 901 may also include on-board memory for caching purposes. The processor 901 may include a single processing unit or multiple processing units for executing different actions of the method flow according to the embodiments of the present disclosure.

In the RAM 903, various programs and data necessary for the operation of the system 900 are stored. The processor 901 , ROM 902 , and RAM 903 are connected to each other via a bus 904 . The processor 901 executes various operations according to the method flow of the embodiment of the present disclosure by executing programs in the ROM 902 and/or RAM 903 . It should be noted that the program may also be stored in one or more memories other than the ROM 902 and the RAM 903 . The processor 901 may also perform various operations according to the method flow of the embodiments of the present disclosure by executing programs stored in the one or more memories.

According to an embodiment of the present disclosure, the system 900 may also include an input/output (I/O) interface 905 that is also connected to the bus 904 . System 900 may also include one or more of the following components connected to I/O interface 905: an input section 906 including a keyboard, mouse, etc.; etc.; a storage section 908 including a hard disk or the like; and a communication section 909 including a network interface card such as a LAN card, a modem, or the like. The communication section 909 performs communication processing via a network such as the Internet. A drive 910 is also connected to the I/O interface 905 as needed. A removable medium 911 such as a magnetic disk, optical disk, magneto-optical disk, semiconductor memory, etc. is mounted on the drive 910 as necessary so that a computer program read therefrom is installed into the storage section 908 as necessary.

According to the embodiments of the present disclosure, the method flow according to the embodiments of the present disclosure can be implemented as a computer software program. For example, the embodiments of the present disclosure include a computer program product, which includes a computer program carried on a computer-readable storage medium, where the computer program includes program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via communication portion 909 and/or installed from removable media 911 . When the computer program is executed by the processor 901, the above-mentioned functions defined in the system of the embodiment of the present disclosure are executed. According to the embodiments of the present disclosure, the above-described systems, devices, devices, modules, units, etc. may be implemented by computer program modules.

The present disclosure also provides a computer-readable storage medium. The computer-readable storage medium may be included in the device/apparatus/system described in the above embodiments; it may also exist independently without being assembled into the device/system device/system. The above-mentioned computer-readable storage medium carries one or more programs, and when the above-mentioned one or more programs are executed, the method according to the embodiment of the present disclosure is realized.

According to an embodiment of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium. Examples may include, but are not limited to: portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD- ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

For example, according to an embodiment of the present disclosure, a computer-readable storage medium may include one or more memories other than the above-described ROM 902 and/or RAM 903 and/or ROM 902 and RAM 903 .

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code that includes one or more logical functions for implementing specified executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It is to be noted that each block in the block diagrams or flowchart illustrations, and combinations of blocks in the block diagrams or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a A combination of dedicated hardware and computer instructions. Those skilled in the art can understand that various combinations and/or combinations can be made in the various embodiments of the present disclosure and/or the features described in the claims, even if such combinations or combinations are not explicitly recorded in the present disclosure. In particular, without departing from the spirit and teaching of the present disclosure, the various embodiments of the present disclosure and/or the features described in the claims can be combined and/or combined in various ways. All such combinations and/or combinations fall within the scope of the present disclosure.

The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the various embodiments have been described separately above, this does not mean that the measures in the various embodiments cannot be advantageously used in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the present disclosure, and these substitutions and modifications should all fall within the scope of the present disclosure.

Claims (14)

1. A data transmission method applied to a CPE terminal, comprising: Based on the configured address information of the first SDWAN controller, establish a first long connection channel with the first SDWAN controller; Establishing a second long connection channel with the second SDWAN controller based on the address information of the second SDWAN controller; Receive the working status information of the first SDWAN controller through the first long connection channel, receive the working status information of the second SDWAN controller through the second long connection channel, and at the same time, the first SDWAN One of the working state of the controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; When receiving the working state of the first SDWAN controller as the main working state, transmit service data through the first long connection channel; Switching the business data to the second long connection channel for transmission in a case of receiving a switching of the working states of the first SDWAN controller and the second SDWAN controller. 2. The method according to claim 1, before establishing the second long connection channel with the second SDWAN controller based on the address information of the second SDWAN controller, further comprising: Receive address information of the second SDWAN controller. 3. The method according to claim 1, wherein receiving the switching of the working states of the first SDWAN controller and the second SDWAN controller comprises: receiving information that the working state of the first SDWAN controller is switched to a standby working state through the first long connection channel; The information that the working state of the second SDWAN controller is switched to the main working state is received through the second long connection channel. 4. The method according to claim 1, wherein the transmitting service data through the first long connection channel comprises: sending a first authentication request to the first SDWAN controller; Receive first authentication information from the first SDWAN controller, where the first authentication information indicates that the first authentication request has been authenticated; According to the first authentication information, the service data is transmitted through the first long connection channel. 5. The method according to claim 1, wherein the switching the service data to the second long connection channel for transmission comprises: sending a second authentication request to the second SDWAN controller; Receive second authentication information from the second SDWAN controller, where the second authentication information indicates that the second authentication request has been authenticated; According to the second authentication information, the service data is transmitted through the second long connection channel. 6. A data transmission method applied to an SDWAN controller platform, said SDWAN controller platform comprising a first SDWAN controller and a second SDWAN controller, said method comprising: Establishing a first long connection channel between the first SDWAN controller and the CPE terminal according to the received first connection request including the address information of the first SDWAN controller from the CPE terminal; Establishing a second long connection channel between the second SDWAN controller and the CPE terminal according to the received second connection request including the address information of the second SDWAN controller from the CPE terminal; The working status information of the first SDWAN controller is sent through the first long connection channel, and the working status information of the second SDWAN controller is sent through the second long connection channel. At the same time, the first SDWAN One of the working state of the controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; When the working state of the first SDWAN controller is the main working state, transmit service data through the first long connection channel; In the case that the working states of the first SDWAN controller and the second SDWAN controller are switched, the switched working states of the first SDWAN controller and the second SDWAN controller are sent to the CPE terminal; The service data is transmitted through the second long connection channel. 7. The method according to claim 6, before establishing the second long connection channel between the second SDWAN controller and the CPE terminal, further comprising: Send the address information of the second SDWAN controller. 8. The method according to claim 6, the sending the working status information after switching between the first SDWAN controller and the second SDWAN controller to the CPE terminal comprises: Sending information that the working state of the first SDWAN controller is switched to a standby working state through the first long connection channel; Sending information that the working state of the second SDWAN controller is switched to the main working state through the second long connection channel. 9. The method according to claim 6, wherein transmitting service data through the first long connection channel comprises: Sending third authentication information to the CPE terminal according to the received third authentication request from the CPE terminal, where the third authentication information indicates that the third authentication request is passed; Transmitting the service data according to the received third authentication information from the CPE terminal. 10. The method according to claim 6, wherein transmitting the service data through the second long connection channel comprises: Sending fourth authentication information to the CPE terminal according to the received fourth authentication request from the CPE terminal, where the fourth authentication information indicates that the fourth authentication request is passed; Transmitting the service data according to the received fourth authentication information from the CPE terminal. 11. A data transmission device applied to a CPE terminal, comprising: A first establishment module, configured to establish a first long connection channel with the first SDWAN controller based on the configured address information of the first SDWAN controller; A second establishing module, configured to establish a second long connection channel with the second SDWAN controller based on the address information of the second SDWAN controller; The first receiving module is configured to receive the working status information of the first SDWAN controller through the first long connection channel, receive the working status information of the second SDWAN controller through the second long connection channel, and At the same time, one of the working state of the first SDWAN controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; The first transmission module is configured to transmit service data through the first long connection channel when receiving the working state of the first SDWAN controller as the main working state; A switching module, configured to switch the service data to the second long-connection channel for transmission when receiving a switch between the working states of the first SDWAN controller and the second SDWAN controller. 12. A data transmission device applied to an SDWAN controller platform, the SDWAN controller platform comprising a first SDWAN controller and a second SDWAN controller, the device comprising: A third establishing module, configured to establish a first long connection between the first SDWAN controller and the CPE terminal according to the received first connection request including the address information of the first SDWAN controller from the CPE terminal aisle; A fourth establishment module, configured to establish a second long connection between the second SDWAN controller and the CPE terminal according to the received second connection request from the CPE terminal that includes the address information of the second SDWAN controller aisle; The first sending module is configured to send the working status information of the first SDWAN controller through the first long connection channel, and send the working status information of the second SDWAN controller through the second long connection channel, and At the same time, one of the working state of the first SDWAN controller and the working state of the second SDWAN controller is the main working state, and the other is the standby working state; The second transmission module is configured to transmit service data through the first long connection channel when the working state of the first SDWAN controller is the main working state; The second sending module is configured to switch between the first SDWAN controller and the second SDWAN controller when the working states of the first SDWAN controller and the second SDWAN controller are switched. The working status is sent to the CPE terminal; A third transmission module, configured to transmit the service data through the second long connection channel. 13. A computer system comprising: one or more processors; memory for storing one or more programs, Wherein, when the one or more programs are executed by the one or more processors, the one or more processors are made to implement the method according to any one of claims 1 to 10. 14. A computer-readable storage medium, on which executable instructions are stored, and the instructions, when executed by a processor, cause the processor to implement the method according to any one of claims 1 to 10.

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