WO2023274161A1

WO2023274161A1 - Service protection method, electronic device, and computer-readable storage medium

Info

Publication number: WO2023274161A1
Application number: PCT/CN2022/101581
Authority: WO
Inventors: 何益波
Original assignee: 中兴通讯股份有限公司
Priority date: 2021-06-30
Filing date: 2022-06-27
Publication date: 2023-01-05
Also published as: CN115550974A

Abstract

Embodiments of the present application relate to the technical field of flexible Ethernet, and in particular, to a service protection method, an electronic device, and a computer-readable storage medium. The service protection method comprises: sending and receiving service data by means of a link corresponding to a first fine-granularity client interface in a pre-created protection group, the protection group comprising multiple fine-granularity client interfaces having the same bandwidth and links corresponding to the various fine-granularity client interfaces, and the multiple fine-granularity client interfaces having the same bandwidth comprising one first fine-granularity client interface and multiple second fine-granularity client interfaces; if link failure occurs for the link corresponding to the first fine-granularity client interface, sending and receiving service data by means of a link corresponding to one of the second fine-granularity client interfaces in the protection group.

Description

Service protection method, electronic device and computer readable storage medium

Cross References to Related Applications

This application is based on the Chinese patent application with the application number "202110748370.3" and the filing date is June 30, 2021, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference. Application.

technical field

The embodiments of the present application relate to the technical field of flexible Ethernet, and in particular to a service protection method, electronic equipment, and a computer-readable storage medium.

Background technique

With the rapid development of mobile Internet technology and the emergence of various new applications such as the Internet of Things, in order to cope with the explosive growth of mobile data traffic and massive device connections in the future, the fifth generation of mobile communication (5th Generation Mobile Communication Technology, referred to as: 5G) technology Came into being. Slicing Packet Network (SPN for short) is a key technology in 5G networks. Flex Ethernet (FlexE for short) technology is used to support the architecture, bandwidth, traffic pattern, slice, and delay of next-generation networks. And time synchronization, etc., to ensure the quality of service of communication services, and to ensure the isolation of slices between transport layers. The SPN network can be used to carry private line services to carry small and medium-sized private line services to meet the service quality requirements of different private line services. Since the minimum bandwidth of the FlexE customer interface is 5Gbps, this customer interface is too wasteful for small particle private line services. Therefore, the relevant technology divides the time slots of FlexE into small-grained client interfaces with a bandwidth that is a multiple of 10 Mbps, and is used to meet small- and medium-sized private line services bearing different bandwidth requirements.

However, the small-grain private line service also needs to establish a protection mechanism, but the industry simply uses the existing pseudo-wire and tunnel protection for service protection for small-granular private-line services, but when multiple pseudo-wires and tunnels enter the same small particle In the case of a customer interface, service protection needs to be configured for each pseudowire or tunnel, which greatly increases the workload of configuration and maintenance.

Contents of the invention

The embodiment of the present application provides a service protection method, which is applied to the local operator's edge equipment node (Provider Edge, referred to as: PE). link to send and receive service data; wherein, the protection group includes multiple small-grain client interfaces with the same bandwidth and links corresponding to each small-grain client interface, and the multiple small-grain client interfaces with the same bandwidth include one of the first A small granular client interface and several second small granular client interfaces; if a link failure occurs on the link corresponding to the first small granular client interface, one of the second small granular client interfaces in the protection group The link corresponding to the interface sends and receives service data.

The embodiment of the present application also provides an electronic device, including: at least one processor; and a memory connected in communication with the at least one processor; wherein, the memory stores information that can be executed by the at least one processor. An instruction, the instruction is executed by the at least one processor, so that the at least one processor can execute the above service protection method.

The embodiment of the present application also provides a computer-readable storage medium storing a computer program, and implementing the above service protection method when the computer program is executed by a processor.

Description of drawings

FIG. 1 is a flowchart 1 of a service protection method according to an embodiment of the present application;

FIG. 2 is a first schematic diagram of a first-type protection group provided in an embodiment of the present application;

FIG. 3 is a second schematic diagram of a first type protection group provided in an embodiment of the present application;

FIG. 4 is a first schematic diagram of a second type of protection group provided in an embodiment of the present application;

FIG. 5 is a second schematic diagram of a second type of protection group provided in an embodiment of the present application;

Fig. 6 shows a link corresponding to one of the second small-grain client interfaces in the protection group when a link failure is detected on the link corresponding to the first small-grain client interface according to an embodiment of the present application. Flow chart of sending and receiving business data;

FIG. 7 is a second flowchart of a service protection method according to another embodiment of the present application;

FIG. 8 is a flow chart of sending an adjustment command corresponding to a protection group to a peer PE node according to an embodiment of the present application;

Fig. 9 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

detailed description

The main purpose of the embodiments of the present application is to provide a service protection method, an electronic device, and a computer-readable storage medium. It aims to reduce the workload of configuration and maintenance for small-grain private line business protection, improve and enrich the service protection mechanism of small-grain private line business, and improve network security and reliability.

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the embodiments 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 application, many technical details are provided for readers to better understand the application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can also be realized. The division of the following embodiments is for the convenience of description, and should not constitute any limitation to the specific implementation of the present application, and the embodiments can be combined and referred to each other on the premise of no contradiction.

An embodiment of the present application relates to a service protection method, which is applied to an electronic device, and the electronic device may be a local PE node. The implementation details of the service protection method of this embodiment are described in detail below, and the following content is only implementation details provided for easy understanding, and is not necessary for implementing this solution.

The specific flow of the service protection method in this embodiment may be shown in Figure 1, including:

Step 101, send and receive service data through the link corresponding to the first small-grain client interface in the pre-created protection group.

Specifically, the pre-created protection group includes multiple small-grain client interfaces with the same bandwidth and links corresponding to each small-grain client interface, where the multiple small-grain client interfaces with the same bandwidth include a first small-grain client interface and Several second small-grained client interfaces.

In specific implementation, the local PE node can select multiple small-grained customer interfaces before the small-granularized private line service is performed, and create a small-granularized private line service according to the selected small-granularized customer interfaces and the links corresponding to each small-granularized customer interface In the protection group, the selected small-grain client interfaces have the same bandwidth, and one of the small-grain client interfaces is selected as the first small-grain client interface, and the other small-grain client interfaces are the second small-grain client interfaces. The bandwidth of each small-grain client interface in the protection group is the same, which can ensure that the service data of the small-grain private line service can be sent out through any client interface.

In an example, the local PE node can arbitrarily select two small-grain client interfaces with the same bandwidth as the first small-grain client interface and the second small-grain client interface, and set the first small-grain client interface as the working small-grain client interface, set the second small-grain client interface as the protection small-grain client interface, and then according to the first small-grain client interface, the second small-grain client interface, the link corresponding to the first small-grain client interface, and the second small-grain client interface Corresponding links form a protection group.

Step 102, if a link failure occurs on the link corresponding to the first small-granular client interface, send and receive service data through one of the links corresponding to the second small-granular client interface in the protection group.

In a specific implementation, after the local PE node sends and receives service data through the link corresponding to the first small-grain client interface in the pre-created protection group, it can detect in real time whether a link occurs on the link corresponding to the first small-grain client interface. If the local PE node finds that the link corresponding to the first small-grain client interface has a link failure, it can send and receive service data through one of the links corresponding to the second small-grain client interface in the protection group to ensure that the small-grain private line Business can continue.

In one example, the protection group includes a first small-granular customer interface, a second small-granular customer interface, links corresponding to the first small-granular customer interface and links corresponding to the second small-granular customer interface, and the local PE node Send and receive service data through the link corresponding to the first small-granular client interface in the protection group. When the local PE node finds that a link failure occurs on the link corresponding to the first small-granular client interface, it can The link corresponding to the second small particle client interface sends and receives service data.

In this embodiment, service data is sent and received through the link corresponding to the first small-grain client interface in the pre-created protection group. The protection group includes multiple small-grain client interfaces with the same bandwidth and links corresponding to each small-grain client interface. A small granular client interface with the same bandwidth includes a first small granular client interface and several second small granular client interfaces. If a link failure occurs on the link corresponding to the first small granular client interface, one of the The link corresponding to the second small-grained customer interface receives and receives service data. It is not necessary to configure service protection for each pseudowire or tunnel in the small-granularized customer interface, but to directly create a protection group based on the customer interface for service protection, which greatly reduces the The workload of configuration and maintenance for service protection of small-grain private line services improves the efficiency of service protection, improves and enriches the service protection mechanism of small-grain private line services, and at the same time, links corresponding to several small-grain customer interfaces with the same bandwidth When necessary, they can be active and standby each other, and the business protection is strong, which effectively improves the security and reliability of the network.

In one embodiment, the protection group pre-created in step 101 may be a first-type protection group, and the protection group is that the local PE nodes of the first-type protection group simultaneously pass through the links corresponding to the small-grain client interfaces in the protection group Send service data, and receive service data only through the link corresponding to the first small-grain client interface. The first type of protection group supports multiple sending on the sending side of the local PE node and single receiving on the receiving side, which can ensure that the sent data will not be lost as much as possible, improve receiving efficiency, and prevent errors caused by repeated reception.

In one example, the local PE node creates the first type of protection group as shown in Figure 2 based on two small-grained user interfaces. NE A is the local PE node, NE D is the remote PE node, and NE B and network element C are two operators' backbone equipment nodes (Provide, referred to as: P), the local PE node in the first type of protection group determines that the first small-grain client interface is the working-use small-grain client interface, and the second The client interface is a small granular client interface for protection. The local PE node simultaneously sends service data through the link corresponding to the first small-granular client interface and the link corresponding to the second small-granular client interface, and only receives service data through the link corresponding to the first small-granular client interface.

In a specific implementation, as shown in Figure 2, network element B can choose two small-grained client interfaces, one for receiving and one for sending, and the two small-granularized client interfaces for sending Set to slot crossing. The settings of NE C and NE B are similar and will not be repeated here.

In one example, as shown in Figure 3, when the local PE node detects that a link failure occurs on the link corresponding to the first small-granular client interface, service data cannot be completed on the link corresponding to the first small-granular client interface For transmission, the local PE node can still send service data through the link corresponding to the first small-grained client interface and the link corresponding to the second small-granularized client interface, and receive service data only through the link corresponding to the second small-granularized client interface business data.

In one embodiment, the protection group pre-created in step 101 may be a second-type protection group, and the local PE node in the second-type protection group only passes through the link corresponding to the first small-grain client interface in the protection group. Send and receive business data. The second type of protection group supports sending and receiving with the client interface, which is convenient for scheduling and maintenance. The embodiment of this application stipulates that both receiving and receiving can reduce the pressure of operation and maintenance and prevent data confusion.

In one example, the local PE node creates a second-type protection group as shown in Figure 4 based on two small-grained user interfaces. NE A is the local PE node, NE D is the peer PE node, and NE B Network element C and network element C are two P nodes. The local PE node in the second type of protection group determines that the first small-granularity client interface is the working-use small-granule client interface, and the second small-granularity client interface is the protection-use small-granularity client interface. The local PE node only sends service data through the link corresponding to the first small-granular client interface, and receives service data only through the link corresponding to the first small-granular client interface.

In one example, as shown in Figure 5, when the local PE node detects that a link failure occurs on the link corresponding to the first small-granular client interface, service data cannot be completed on the link corresponding to the first small-granular client interface For transmission, the local PE node can only send service data through the link corresponding to the second small-grained client interface, and receive service data only through the link corresponding to the second small-granularized client interface.

In one embodiment, each small-grain client interface in the pre-created protection group is configured with an operation and maintenance management function (Operation Administration and Maintenance, OAM for short), and when the local PE detects that the first fine-grain client interface corresponds to When a link failure occurs on a link, sending and receiving business data through the link corresponding to one of the second small particle client interfaces in the protection group can be realized through the steps shown in Figure 6, specifically including:

Step 201, if the OAM of the first small-grain client interface detects a link failure, generate a link failure alarm.

Specifically, according to the actual needs of communication network operations, communication operators divide network management work into three categories, namely operation, management, and maintenance. Operation mainly completes the analysis, prediction, planning, and configuration of daily networks and services. ;Maintenance mainly completes activities such as testing and fault management of the network and its services.

In a specific implementation, when the local PE node creates a protection group, it can configure OAM for each small-grained client interface in the protection group, and the OAM configured for the small-granularized client interface can detect in real time whether the link corresponding to the When a link failure occurs, if a link failure occurs on the link corresponding to the small granular client interface, the OAM of the small granular client interface can generate a link failure alarm. OAM is configured on the customer interface, which can improve the efficiency and accuracy of link fault discovery.

Step 202, if the link failure alarm still exists after the first preset time, send and receive service data through a link corresponding to one of the second small-grain client interfaces in the protection group.

In a specific implementation, after the local PE node receives the link failure alarm generated and sent by the OAM of the first small particle client interface, it can wait for the first preset time. If the link failure alarm is received after the first preset time If it still exists, it means that the link corresponding to the first small-grain client interface does have a link failure, and the local PE node can send and receive service data through one of the links corresponding to the second small-grain client interface in the protection group. Wherein, the first preset time is the lag time, and the first preset time can be set by those skilled in the art when creating the protection group according to actual needs, which is not specifically limited in this embodiment of the present application. The local PE node waits for the first preset time, which can effectively prevent false alarms and reduce maintenance pressure.

In an example, the setting range of the first preset time may be 0s to 10s, the default is 0s, and the step size is 10ms.

In this embodiment, each of the small-granular client interfaces is configured with an operation, maintenance and management function OAM; if a link failure occurs on the link corresponding to the first small-granular client interface, the A link corresponding to the second small-grain client interface transmits and receives business data, including: if the OAM of the first small-grain client interface detects a link failure, then generate a link failure alarm; After the link failure alarm still exists, the service data is sent and received through one of the links corresponding to the second small granular client interface in the protection group. , can improve the efficiency and accuracy of link fault discovery, effectively prevent false alarms, and reduce maintenance pressure.

In one embodiment, when the local PE node creates a protection group, it can set the return mode of the protection group to return mode, and the local PE node whose return mode of the protection group is return mode passes through one of the first protection groups in the protection group. After the link corresponding to the second small-particle client interface receives and receives service data, if the link failure alarm disappears, then after a second preset time, the link corresponding to the first small-particle client interface receives and receives service data.

In a specific implementation, after the local PE node sends and receives service data through the link corresponding to one of the second small-grain client interfaces in the protection group, it can detect in real time whether the link failure alarm disappears. If the link failure alarm disappears, it means The link corresponding to the first small-grain client interface returns to normal and can transmit service data, and the local PE node can send and receive service data through the link corresponding to the first small-grain client interface after a second preset time. Wherein, the second preset time is the waiting return time (Wait to Restore, referred to as: WTR). The second preset time can be set by those skilled in the art when creating a protection group according to actual needs. This is not specifically limited. The revertive protection group can ensure that after the link corresponding to the first small-granular client interface returns to normal, the service direction is fixed on the working link, that is, the link corresponding to the first small-granular client interface, which is convenient for maintenance and waits for the second preset The setting time can ensure that the link corresponding to the first small particle client interface really resumes normal operation, and there is no link failure.

In an example, the range of the second preset time may be 1 minute to 12 minutes, the default is 5 minutes, and the step size is 1 minute.

In an example, the protection group created by the local PE node includes a first small-grain client interface, a second fine-grain client interface, the link corresponding to the first fine-grain client interface, and the link corresponding to the second fine-grain client interface. The local PE node originally sends and receives service data through the link corresponding to the first small-granular client interface. At a certain moment, the OAM of the first small-granular client interface sends out a link failure One of the links corresponding to the second small-granularity client interface sends and receives business data. At a certain moment later, the OAM of the first small-granularity client interface stops sending link failure alarms, and the local PE node can switch back to the link through the first small-granularity client interface. The corresponding link sends and receives service data.

In one embodiment, when the local PE node creates a protection group, it can set the return mode of the protection group to non-revertive, and the local PE node whose return mode of the protection group is non-revertive, passes through the protection group. After the link corresponding to a second small-grain client interface receives and receives service data, if the link failure alarm disappears, the link corresponding to the second small-grain client interface that is currently sending and receiving service data still transmits and receives service data.

In a specific implementation, after the local PE node switches to send and receive service data through the link corresponding to one of the second small-grain client interfaces in the protection group, it can detect in real time whether the link failure alarm disappears. , indicating that the link corresponding to the first small-grain client interface returns to normal and can transmit service data, and the local PE node can still send and receive service data through the link corresponding to the second small-grain client interface that is currently sending and receiving service data. The non-revertive protection group can avoid the instantaneous service interruption caused by the switchback of the protection group when the link is restored.

In an example, the protection group created by the local PE node includes a first small-grain client interface, a second fine-grain client interface, the link corresponding to the first fine-grain client interface, and the link corresponding to the second fine-grain client interface. The local PE node originally sent and received service data through the link corresponding to the first small-grain client interface. At a certain moment, the OAM of the first small-grain client The link corresponding to the second small-grain client interface sends and receives business data. At a certain moment later, the OAM of the first small-grain client interface stops sending link failure alarms, and the local PE node can still send and receive service data through the second small-grain client. The link corresponding to the interface sends and receives service data, and does not switch back to send and receive service data through the link corresponding to the first small-grain client interface.

Another embodiment of the present application relates to a service protection method. The implementation details of the service protection method in this embodiment are described in detail below. The following content is only the implementation details provided for easy understanding, and is not necessary for implementing this solution. The specific process of the service protection method in this embodiment may be shown in Figure 7, including:

Step 301, send and receive service data through the link corresponding to the first small-grain client interface in the pre-created protection group.

Wherein, step 301 is substantially the same as step 101, and will not be repeated here.

Step 302, if an adjustment command corresponding to the protection group is received, perform an operation corresponding to the adjustment command according to the adjustment command.

In a specific implementation, the local PE node can receive the adjustment command corresponding to the protection group in real time. The adjustment command is sent to the local PE node through the human-computer interaction interface by a person skilled in the art according to the actual needs. The local PE node is in the After receiving the adjustment command corresponding to the protection group, the operation corresponding to the adjustment command can be performed. The embodiment of the present application allows manual participation in the protection of the small-grain private line service, further enriching the service protection mechanism of the small-granular private line service.

In an example, the adjustment command is a switching command, and the switching command is used to instruct the local PE node to send and receive service data through the link corresponding to the small-grain client interface indicated by the switching command. For example, the protection group created by the local PE node includes a client interface of the first small granularity, a client interface of the second smallest granularity, the link corresponding to the first granular client interface, and the link corresponding to the second granular client interface. The terminal PE node is currently sending and receiving service data through the link corresponding to the first small-granularity client interface, and the switching command indicates the second small-granularity client interface. After receiving the switching command, the local PE node can switch to the second small-particle client interface The corresponding link sends and receives service data.

In one example, the switching command is a forced switching command. After the local PE node switches to send and receive business data through the link corresponding to the second small-granular customer interface, it will not automatically switch to the link corresponding to the first small-granular customer interface. Send and receive service data.

In one example, the switching command is a non-mandatory switching command. After the local PE node switches to send and receive service data through the link corresponding to the second small-grained client interface, it can switch the local PE node to the second The link corresponding to the client interface of a small particle receives and receives service data.

In an example, the adjustment command is a lock master command, and the lock master command is used to lock the sending and receiving of service data through the link corresponding to the first small-grain client interface.

In an example, the adjustment command is a clear command, and the clear command is used to cancel the switching command previously received by the local PE node and lock the operation corresponding to the active command.

In an example, the adjustment command is set with a preset priority, and if the local PE node receives multiple adjustment commands at the same time, the execution sequence of each adjustment command can be determined according to the preset priority.

In this embodiment, after sending and receiving service data through the link corresponding to the first small-grain client interface in the pre-created protection group, it further includes: if an adjustment command corresponding to the protection group is received, then according to the An adjustment command, performing an operation corresponding to the adjustment command; wherein the adjustment command includes any combination of the following: a switching command and a clearing command; the switching command is used to instruct the local PE node to indicate through the switching command The link corresponding to the small-grain client interface receives and receives service data; the clear command is used to cancel the previous switching command. The embodiment of the present application allows manual participation in service protection, which further enriches the service protection mechanism of the small-grain private line service.

In one embodiment, after receiving the adjustment command corresponding to the protection group, the local PE node may send the adjustment command corresponding to the protection group to the peer PE node through the steps shown in FIG. 8 , specifically including:

Step 401, generating an automatic protection switching (Automatic Protection Switching, APS for short) message corresponding to the adjustment command.

Step 402: Send an APS message to the peer PE node through several small-grain client interfaces, so that the peer PE node obtains an adjustment command.

In the specific implementation, after receiving the adjustment command, the local PE node can generate an APS message corresponding to the adjustment command, and send the APS message to the peer PE node through each small granular client interface for the peer PE node to obtain Adjustment commands, so that the operations corresponding to the adjustment commands are executed synchronously. The adjustment command is sent to the peer PE node in the form of an APS message in time, so that the synchronization operation can be completed in time.

In an example, the adjustment command further includes a practice command, and the practice command is used to detect whether the local PE node can send the APS packet to the peer PE node.

In an example, the APS message may be carried by a 66-bit cell block in the S-block of the small-grain client interface carrying cell overhead information.

Another embodiment of the present application relates to an electronic device, as shown in FIG. 9 , including: at least one processor 501; and a memory 502 communicatively connected to the at least one processor 501; wherein, the memory 502 stores There are instructions executable by the at least one processor 501, and the instructions are executed by the at least one processor 501, so that the at least one processor 501 can execute the service protection methods in the foregoing embodiments.

Wherein, 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 together. The bus may also connect together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and therefore will not be further described herein. The bus interface provides an interface between the bus and the transceivers. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing 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 that the processor uses when performing operations.

Another embodiment of the present application 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 of the above-mentioned embodiments can be completed by instructing related hardware through a program, 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 media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

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

Claims

A service protection method, applied to a PE node of a local operator's edge device, comprising:

Send and receive service data through the link corresponding to the first small-grain client interface in the pre-created protection group; wherein, the protection group includes multiple small-grain client interfaces with the same bandwidth and links corresponding to each small-grain client interface, so The plurality of small-grain client interfaces with the same bandwidth include one first small-grain client interface and several second small-grain client interfaces;

If a link failure occurs on the link corresponding to the first small-granular client interface, send and receive service data through one of the links corresponding to the second small-granular client interface in the protection group.
The service protection method according to claim 1, wherein each of the small particle client interfaces is equipped with an operation, maintenance and management function OAM;

If a link failure occurs on the link corresponding to the first small-granular client interface, sending and receiving business data through one of the links corresponding to the second small-granular client interface in the protection group includes:

If the OAM of the first small-grained client interface detects a link failure, a link failure alarm is generated;

If the link failure alarm still exists after the first preset time, send and receive service data through one of the links corresponding to the second small-grain client interface in the protection group.
The service protection method according to claim 2, wherein, if the return mode of the protection group is return mode, the service is sent and received through one of the links corresponding to the second small-grained client interface in the protection group After the data, also include:

If the link failure alarm disappears, send and receive service data through the link corresponding to the first small-grained client interface after a second preset time.
The service protection method according to claim 2, wherein, if the return mode of the protection group is non-return type, sending and receiving through one of the links corresponding to the second small-grain client interface in the protection group After the business data, it also includes:

If the link failure alarm disappears, the service data is still sent and received through the link corresponding to the second small-grain client interface that is currently sending and receiving service data.
The service protection method according to any one of claims 1 to 4, wherein the pre-created protection group is a first-type protection group, and the local PE node in the first-type protection group passes through the The link corresponding to each small-granular client interface sends service data, and only receives service data through the link corresponding to the first small-granular client interface.
The service protection method according to any one of claims 1 to 4, wherein the pre-created protection group is a second-type protection group, and the local PE node in the second-type protection group only passes through the The link corresponding to the first small particle client interface receives and receives service data.
The service protection method according to any one of claims 1 to 6, wherein, after sending and receiving service data through the link corresponding to the first small-grained client interface in the pre-created protection group, further comprising:

If an adjustment command corresponding to the protection group is received, perform an operation corresponding to the adjustment command according to the adjustment command; wherein the adjustment command includes any combination of the following: a switching command and a clearing command;

The switching command is used to instruct the local PE node to send and receive service data through the link corresponding to the small-grain client interface indicated by the switching command;

The clear command is used to cancel the previous switching command.
The service protection method according to claim 7, wherein, after receiving the adjustment command corresponding to the protection group, further comprising:

generating an automatic protection switching APS message corresponding to the adjustment command;

Send the APS message to the peer PE node through the small-grain client interfaces, so that the peer PE node obtains the adjustment command.
An electronic device comprising:

at least one processor; and,

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

The memory stores instructions executable by the at least one processor, the instructions are executed by the at least one processor, so that the at least one processor can perform the operation described in any one of claims 1 to 8 The business protection method described above.
A computer-readable storage medium storing a computer program, and implementing the service protection method according to any one of claims 1 to 8 when the computer program is executed by a processor.