WO2024082462A1

WO2024082462A1 - Service forwarding method and apparatus, and electronic device

Info

Publication number: WO2024082462A1
Application number: PCT/CN2023/071117
Authority: WO
Inventors: 王雪伟; 陈学平; 曲延锋
Original assignee: 锐捷网络股份有限公司
Priority date: 2022-10-21
Filing date: 2023-01-06
Publication date: 2024-04-25
Also published as: CN117956018A

Abstract

A service forwarding method and apparatus, and an electronic device. The method comprises: obtaining a service to be processed and a control plane corresponding to said service; when the control plane is in a preset state, determining, from a forwarding plane associated with the control plane, an initial forwarding list corresponding to said service; adjusting the initial forwarding list to a target forwarding list on the basis of the service type of said service; and forwarding said service according to the target forwarding list. The initial forwarding list is adjusted to the target forwarding list on the basis of the service type of said service, such that the control plane and the forwarding plane are decoupled, and thus services to be processed of different service types correspond to different forwarding lists, and service requirements respectively corresponding to the services to be processed of different service types can be met on the same port link.

Description

A service forwarding method, device and electronic device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to a Chinese patent application filed with the Chinese Patent Office on October 21, 2022, with application number 202211290343.7 and application name “A service forwarding method, device and electronic device”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present invention relates to the field of communication technology, and in particular to a service forwarding method, device and electronic equipment.

Background technique

In network communication technology, the network side and the user side realize data forwarding and transmission in the network architecture through routers. In order to ensure the reliability of data during forwarding and transmission, the next-generation full-service virtual private network solution (Ethernet Virtual Private Network, EVPN) is introduced. EVPN unifies the control plane of various virtual private network services and uses the Border Gateway Protocol (Border Gateway Protocol, BGP) to transmit Layer 2 or Layer 3 reachability information.

EVPN supports multi-homing multi-active and multi-homing single-active access of customer edge devices (CE). CE is the router on the user side, and provider edge devices (PE) are the routers on the network side. Multi-homing means that the router on the user side can connect to multiple routers on the network side at the same time. When EVPN implements load balancing, it needs to forward and transmit data based on multi-homing multi-active. When EVPN implements traffic control, it needs to forward and transmit data based on multi-homing single-active.

Specifically, in CE multi-homing networking, you can configure the redundancy mode of EVPN networking, that is, configure the active mode of each PE connected to the same CE to multi-active mode or single-active mode. By configuring the redundancy mode, you can control whether the CE multi-homing networking load shares the traffic. In single-active mode, all PEs in the redundant backup group will elect one PE as the primary device to forward traffic, and the remaining PEs will serve as backups for the primary device. When the primary device fails, the backup device can replace the primary device to forward traffic. In multi-active mode, all PEs in the redundant backup group participate in the forwarding of unicast data packets to achieve load sharing.

EVPN multi-homing multi-active and multi-homing single-active access modes are configured with single-active or multi-active based on the Ethernet Segment Identifier (ESI). The link identified by ESI can be an Ethernet link (Ethernet Segment, ES) based on a physical port or a virtual ES (virtual ES, vES) based on a logical port.

In an actual network, multiple types of services are carried at the same time. Typical services include home broadband Internet access services and government and enterprise dedicated line services. The service requirements of each service type are also different. On the user side, multiple types of services are multi-homed to the same group of physical ports of the same PE device group (such as PE1\PE2 device group) through the user network. In order to distinguish different services, different vES can be configured to carry different services. For example, vES1, corresponding to virtual local area network (VLAN) 1, carries home broadband service virtual private network (VPN) 1, and its load balancing method is multi-homing and multi-active; vES2, corresponding to VLAN2, carries government and enterprise dedicated line service VPN2, and its load balancing method is multi-homing and single-active.

The following problems will arise when using vES to carry multiple services: In order to support load sharing of multi-homing and multi-active services, the user network on the CE side configures the access port as an aggregation port, such as a link aggregation group (LAG) to achieve load sharing of services. However, the aggregation port will uniformly carry user traffic of all services, including multi-homing and multi-active services and multi-homing single-active services. However, for multi-homing and single-active services: when the user side sends traffic through the aggregation port, the aggregation port will forward the message according to its own load sharing strategy, and the PEs on the network side are each other's active and standby routers. The load sharing strategy on the user side may cause the message to be sent to the standby PE on the network side, and the standby PE will block the message, resulting in message loss and affecting the service experience.

Summary of the invention

The embodiments of the present invention provide a service forwarding method, device and electronic device, which adjust the forwarding table in the forwarding plane through the service type of the service to be processed and the preset state of the control plane, thereby realizing the decoupling of the control plane and the forwarding plane of EVPN, and further being able to meet different service requirements of different service types under the same port link.

In a first aspect, the present application provides a service forwarding method, the method comprising:

Obtaining a service to be processed and a control plane corresponding to the service to be processed;

When the control plane is in a preset state, determining an initial forwarding list corresponding to the to-be-processed service from a forwarding plane associated with the control plane, wherein the initial forwarding list does not meet the service requirements of the to-be-processed service, and the preset state is a multi-homing multi-active state or a multi-homing single-active state;

Adjusting the initial forwarding list to a target forwarding list based on the service type of the service to be processed;

The to-be-processed business is forwarded according to the target forwarding list.

Through the above method, when the preset state of the control plane is determined, the initial forwarding list in the forwarding plane associated with the control plane is adjusted, and the initial forwarding list is adjusted to a target forwarding list that conforms to the service type of the service to be processed, so that each service type of the service to be processed corresponds to a different forwarding list, thereby realizing the decoupling of the control plane and the forwarding plane, and then being able to meet the different service requirements of different service types.

In one possible design, determining an initial forwarding list corresponding to the to-be-processed service from a forwarding plane associated with the control plane includes:

When the control plane is in a multi-home multi-active state, determining all service nodes corresponding to the service to be processed;

Determine the forwarding order corresponding to each service node, and generate an initial forwarding list based on each forwarding order.

Through the above method, the initial forwarding list corresponding to the pending service is determined when the control plane is in the multi-homing multi-active state, so that the pending service can be forwarded according to the initial forwarding list.

When the control plane is in a multi-homing single-active state, a primary service node and a backup service node are determined from all service nodes in Border Gateway Protocol (BGP) routing information, wherein the BGP routing information is used to confirm the primary and backup status of the service nodes;

Determine a primary forwarding order corresponding to the primary service node and a backup forwarding order corresponding to the backup service node;

The initial forwarding list corresponding to the to-be-processed service is generated based on the primary forwarding order and the backup forwarding order.

Through the above method, the initial forwarding list of the pending services is determined when the control plane is in a multi-homing single-active state, and the main service node and the backup service node among all service nodes are determined, so that the forwarding order of the pending services can be determined.

In a possible design, determining a primary service node and a backup service node from all service nodes in the BGP routing information includes:

Determine the IP address or VLAN ID corresponding to each service node;

Sort the IP addresses in a preset order, select the smallest IP address, and use the service node corresponding to the smallest IP address as the main service node, and use other nodes except the main service node as backup service nodes; or

The VLAN identifier is brought into a preset formula to calculate the serial number of each service node, and the service node with serial number 1 is used as the main service node, and the other nodes except the main service node are used as backup service nodes.

Through the above method, the main service node and the backup service node are determined in different ways, thereby ensuring the accuracy of the determined main service node and the backup service node.

In a possible design, adjusting the initial forwarding list to a target forwarding list based on the service type of the to-be-processed service includes:

Extracting all service nodes in the initial forwarding list, and determining a primary service node and a backup service node from all service nodes;

When the service type of the to-be-processed service and the preset state are determined, adjusting the primary service node and/or the backup service node in the initial forwarding list based on a preset instruction, wherein the preset instruction is an instruction to instruct to adjust the forwarding list of the forwarding plane;

The adjusted initial forwarding list is used as the target forwarding list for the service to be processed.

Through the above method, the main business node and the backup business node are determined, and the forwarding order in the initial forwarding list is adjusted based on the type of business to be processed and the preset state of the control plane, ensuring that the formed target forwarding list can meet the business requirements of the business to be processed.

In a possible design, before forwarding the to-be-processed service according to the target forwarding list, the method further includes:

Obtaining the main service node corresponding to the service to be processed;

When the main service node changes, the main service node and the backup service node are exchanged, and a forwarding order of the main service node and the backup service node after the exchange is set.

By using the above method, when the main service node fails or the main service node is re-elected, the backup service node is used as the target main service node, and the forwarding order of the main service node is associated with the target main service node, ensuring that the target main service node can achieve local priority forwarding.

Obtaining a standby service node corresponding to the service to be processed;

When the standby service node fails and recovers, a standby forwarding order table corresponding to the standby service node fails is obtained, and the forwarding plane is controlled to use the standby forwarding order table as a target forwarding order table after the standby service node fails and recovers.

By the above method, the processing mode of failure recovery of the standby service node is determined, and the forwarding order when the standby service node fails is the same as the forwarding order after the standby service node fails and the loss of pending services forwarded by the standby service node is prevented.

In a second aspect, the present application provides a service forwarding device, the device comprising:

An acquisition module, used to obtain a service to be processed and a control plane corresponding to the service to be processed;

A determination module, configured to determine, when the control plane is in a preset state, an initial forwarding list corresponding to the to-be-processed service from a forwarding plane associated with the control plane;

An adjustment module, configured to adjust the initial forwarding list to a target forwarding list based on the service type of the service to be processed;

A forwarding module is used to forward the pending business according to the target forwarding list.

In one possible design, the determination module is specifically used to determine all service nodes corresponding to the to-be-processed service when the control plane is in a multi-home and multi-active state, determine the forwarding order corresponding to each service node, and generate an initial forwarding list based on each forwarding order.

In one possible design, the determination module is also used to determine the primary business node and the backup business node from all business nodes in the Border Gateway Protocol (BGP) routing information when the control plane is in a multi-homing single-active state, wherein the BGP routing information is used to confirm the primary and backup status of the business nodes, determine the primary forwarding order corresponding to the primary business node and the backup forwarding order corresponding to the backup business node, and generate the initial forwarding list corresponding to the to-be-processed business based on the primary forwarding order and the backup forwarding order.

In a possible design, the determination module is also used to determine the IP address or VLAN ID corresponding to each business node, sort the IP addresses in a preset order, screen out the minimum IP address, and use the business node corresponding to the minimum IP address as the main business node, and other nodes except the main business node as backup business nodes, or bring the VLAN ID into a preset formula to calculate the serial number of each business node, and use the business node with serial number 1 as the main business node, and other nodes except the main business node as backup business nodes.

In one possible design, the adjustment module is specifically used to extract all business nodes in the initial forwarding list, and determine the main business node and the backup business node from all the business nodes. When the business type of the service to be processed and the preset status are determined, the main business node and/or the backup business node in the initial forwarding list are adjusted based on preset instructions, and the adjusted initial forwarding list is used as the target forwarding list for the service to be processed.

In one possible design, the forwarding module is specifically used to obtain the main business node corresponding to the service to be processed. When the main business node changes, the main business node and the backup business node are swapped, and the forwarding order of the main business node and the backup business node after the swap is set.

In one possible design, the forwarding module is also used to obtain a backup service node corresponding to the service to be processed. When the backup service node fails and recovers, the backup forwarding order table corresponding to the backup service node fails is obtained, and the forwarding plane is controlled to use the backup forwarding order table as the target forwarding order table after the backup service node fails and recovers.

In a third aspect, the present application provides a service forwarding method, characterized in that the method is applied to a virtual private network EVPN configured with different virtual Ethernet links vES, and the method includes:

The backup service node of the first vES receives the to-be-processed service sent by the CE;

When the service to be processed comes from the first vES, the service to be processed is forwarded based on a preset local routing table entry; wherein the preset state of the control plane of the first vES is a multi-homing single active state.

Through the above method, when EVPN configures different vES to meet the service requirements of different service types, the user network needs to configure an aggregation port. At this time, when all PE devices on the network side receive the pending services sent by CE, they will forward the pending services based on the preset local routing table entries, avoiding the loss of messages and improving the service experience. Through the above method, the first vES is applicable to multi-home single-active services, but if the user-side service traffic of the first vES forwards the pending services of the first vES to the backup service node of the first vES according to the aggregation port load balancing strategy of other different vESs, the service forwarding can also be performed in the above manner.

In a possible design, after the standby service node of the first vES receives the to-be-processed service sent by the CE, the method further includes:

When the service to be processed belongs to the first vES and comes from a local single-home CE or Ethernet link ES, the backup service node of the first vES blocks the service to be processed and sends the service to be processed to the primary service node of the first vES; wherein, when the service to be processed comes from the ES, the CE accesses the EVPN through the ES multi-home.

Through the above method, if the backup service node of the first vES receives pending services sent from the local single-home CE or other ES, and the destination of the pending services is also forwarded to the user network (first vES) belonging to the backup service node, that is, it is not forwarded to the remote service node, since the service nodes in the single-active state will uniformly perform speed limit QoS control through the main service node, the backup service node will uniformly forward the pending services through the main service node to achieve centralized speed limit QoS precise control. When the backup service node receives pending services of the multi-home single-active type, if the routing table entry of the pending services is stored locally, the pending services are directly forwarded according to the local routing table entry. If the routing table entry of the pending services is not stored locally, the pending services can be processed according to the relevant unknown unicast message processing rules.

In a possible design, forwarding the service to be processed based on a preset local routing table entry specifically includes:

Obtaining the service to be processed and a control plane corresponding to the service to be processed;

When the control plane is in a preset state, determining an initial forwarding list corresponding to the service to be processed from a forwarding plane associated with the control plane, wherein the initial forwarding list does not meet the service requirements of the service to be processed, and the preset state is a multi-homing multi-active state or a multi-homing single-active state;

The to-be-processed service is forwarded based on the target forwarding list and the local routing table entry.

When the control plane is in a multi-homing single-active state, determining a primary service node and a backup service node from all service nodes in the Border Gateway Protocol BGP routing information, wherein the BGP routing information is used to confirm the primary and backup status of the service node;

Determine the IP address or VLAN ID corresponding to each service node;

When the service type and the preset state of the to-be-processed service are determined, adjusting the primary service node and/or the backup service node in the initial forwarding list based on a preset instruction, wherein the preset instruction is an instruction to instruct adjustment of the initial forwarding list in the forwarding plane;

In a possible design, after determining the target forwarding list, the method further includes:

Obtaining the main service node corresponding to the service to be processed;

Obtaining a standby service node corresponding to the service to be processed;

By the above method, the processing mode of failure recovery of the standby service node is determined, and the forwarding order when the standby service node fails is the same as the forwarding order after the standby service node fails and the loss of the pending service forwarded by the standby service node is prevented.

In a fourth aspect, the present application provides a service forwarding device, which is applied to a virtual private network EVPN configured with different vESs, and the device includes:

A receiving module, used for receiving pending services sent by CE;

A forwarding module is used to forward the pending service based on a preset local routing table entry when the pending service comes from the first vES; wherein the preset state of the control plane of the first vES is a multi-home single-active state, and the device is set at the backup service node of the first vES.

In one possible design, the forwarding module is also used to block the service to be processed and send the service to the main service node of the first vES when the service to be processed belongs to the first vES and comes from a single-home CE or ES; wherein, when the service to be processed comes from the ES, the CE accesses the EVPN through the ES.

In one possible design, the forwarding module is specifically used to obtain the service to be processed and the control plane corresponding to the service to be processed; when the control plane is in a preset state, determine the initial forwarding list corresponding to the service to be processed from the forwarding plane associated with the control plane; adjust the initial forwarding list to a target forwarding list based on the service type of the service to be processed; and forward the service to be processed based on the target forwarding list and the local routing table entry.

In one possible design, the forwarding module is specifically used to determine all service nodes corresponding to the service to be processed when the control plane is in a multi-home and multi-active state, determine the forwarding order corresponding to each service node, and generate an initial forwarding list based on each forwarding order.

In one possible design, the forwarding module is also used to determine the primary business node and the backup business node from all business nodes in the Border Gateway Protocol (BGP) routing information when the control plane is in a multi-homing single-active state, wherein the BGP routing information is used to confirm the primary and backup status of the business nodes, determine the primary forwarding order corresponding to the primary business node and the backup forwarding order corresponding to the backup business node, and generate the initial forwarding list corresponding to the to-be-processed business based on the primary forwarding order and the backup forwarding order.

In a possible design, the forwarding module is also used to determine the IP address or VLAN identifier corresponding to each business node, sort the IP addresses in a preset order, screen out the minimum IP address, and use the business node corresponding to the minimum IP address as the main business node, and other nodes except the main business node as backup business nodes, or bring the VLAN identifier into a preset formula to calculate the serial number of each business node, and use the business node with serial number 1 as the main business node, and other nodes except the main business node as backup business nodes.

In one possible design, the forwarding module is specifically used to extract all business nodes in the initial forwarding list, and determine the main business node and the backup business node from all the business nodes. When the business type of the service to be processed and the preset status are determined, the main business node and/or the backup business node in the initial forwarding list are adjusted based on preset instructions, and the adjusted initial forwarding list is used as the target forwarding list for the service to be processed.

In one possible design, the forwarding module is specifically used to obtain the main business node corresponding to the service to be processed. When the main business node changes, the main business node and the backup business node are interchanged, and the forwarding order of the main business node and the backup business node after the interchange is set.

In a fifth aspect, the present application provides an electronic device, including:

Memory, used to store computer programs;

The processor is used to implement the steps of the service forwarding method of the first aspect or the steps of the service forwarding method of the third aspect when executing the computer program stored in the memory.

In a sixth aspect, a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the service forwarding method of the first aspect or the steps of the service forwarding method of the third aspect are implemented.

For each of the above-mentioned aspects from the first to the sixth aspects and the technical effects that may be achieved by each of the aspects, please refer to the above-mentioned description of the technical effects that can be achieved by various possible schemes in the first aspect or the third aspect, and no further details will be given here.

Other features and advantages of the present application will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

FIG1 is a schematic diagram of a router provided by the present application using multi-home multi-active for data forwarding and transmission;

FIG2 is a schematic diagram of a router provided by the present application using multi-homing single-active for data forwarding and transmission;

FIG3 is a flow chart of steps of a service forwarding method provided by the present application;

FIG4 is a schematic diagram of forwarding services of different service types in a dual-home dual-active mode provided by the present application;

FIG5 is a schematic diagram of the structure of a service forwarding device provided by the present application;

FIG6 is a schematic diagram of the structure of an electronic device provided by the present application;

FIG7 is another flow chart of steps of a service forwarding method provided by the present application;

FIG8 is another schematic diagram of the structure of a service forwarding device provided in the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the technical solution of the present application, rather than all of the embodiments. Based on the embodiments recorded in the application documents, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the technical solution of the present application.

The terms "first" and "second" in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the term "comprising" and any of their variations are intended to cover non-exclusive protection. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. "Multiple" in the present application can mean at least two, for example, two, three or more, and the embodiments of the present application are not limited.

In addition, the term "and/or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article, unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

The application background of the embodiment of the present invention is briefly introduced below. EVPN can separate the control plane and the forwarding plane. The control plane is responsible for publishing routing information, and the forwarding plane is responsible for forwarding messages. Through the EVPN, load balancing and flow control can be achieved during data forwarding and transmission.

Based on the above description, when EVPN implements load balancing, it needs to forward and transmit data based on multi-home multi-active, and when EVPN implements flow control, it needs to forward and transmit data based on multi-home single-active. The schematic diagram of the router using multi-home multi-active for data forwarding and transmission is shown in Figure 1. In Figure 1, if CE1 and CE2 are routers on the user side, PE1, PE2, and PE3 are routers on the network side, and the router on the user side can connect to multiple network side routers, a link aggregation group (LAG) is deployed on CE1. The link aggregation group is used to bind port links with the same configuration attributes into a logical link, improve the connection bandwidth between devices, and provide link backup and load sharing functions. When PE3 sends the pending service packet sent by CE2 to PE1 and PE2, PE1 and PE2 forward it to CE1 respectively, so that the traffic load sharing between PE1 and PE2 can be achieved.

The schematic diagram of the router using multi-homing single-active for data forwarding and transmission is shown in Figure 2. In Figure 2, if CE3 and CE4 are routers on the user side, no LAG group is deployed on CE3, PE1, PE2, and PE3 are routers on the network side, PE1 and PE2 are each other's active and standby routers, and all pending services of PE3 will be forwarded to PE1. PE1 will limit the rate of all received services and continue to forward them downward to CE3, so that the flow control of pending services can be implemented on the active PE.

At present, each router port corresponds to at least one pending service, and each pending service corresponds to an associated control plane and forwarding plane. Different ports correspond to pending services of different service types to solve the multi-service requirements corresponding to multiple types of services. However, when the CE is multi-homed to the PE, in the case of the same port link identifier, only the EVPN multi-homing multi-active mode or the EVPN multi-homing single-active mode can be deployed. Therefore, the problem that the same port link identifier cannot meet the different service requirements of multiple different service types has become a current problem to be solved.

In the previous technology, when the CE is multi-homed to the PE with the same port link identifier, due to the diversity of service types in the network, only the EVPN multi-homing multi-active mode or the EVPN multi-homing single-active mode can be deployed with the same port link identifier, and each mode can only meet the needs of one service type in the network. Therefore, when there is more than one service type in the network, the different service needs of multiple different service types cannot be met with the same port link identifier.

In order to solve the above problems, the embodiment of the present application provides a service forwarding method, which is used to realize the decoupling of the control plane and the forwarding plane of EVPN under the same port link identifier, so as to simultaneously meet the service requirements of various types of services. Among them, the method and device described in the embodiment of the present application are based on the same technical concept. Since the principles of the problems solved by the method and the device are similar, the embodiments of the device and the method can refer to each other, and the repeated parts will not be repeated.

The embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

3, the present application provides a service forwarding method, which can realize the decoupling of the control plane and the forwarding plane of EVPN, so as to meet the service requirements of various types of services under the same port link identification. The implementation process of the method is as follows:

Step S31: Obtain the service to be processed and the control plane corresponding to the service to be processed.

Since the forwarding and transmission of services in the network need to be completed through routers on the network side and the user side, in the process of realizing the transmission and forwarding of services, the control plane and the forwarding plane of EVPN in the related technology are in a coupled state, and both the control plane and the forwarding plane have a multi-home single-active mode and a multi-home multi-active mode, as shown in Table 1:

控制面Control Surface	转发面Forwarding plane
多归单活模式Multi-homing single active mode	多归单活模式Multi-homing single active mode
多归多活模式Multi-home multi-active mode	多归多活模式Multi-home multi-active mode

Table 1

In the above Table 1, both the control plane and the forwarding plane have a multi-home single-active mode and a multi-home dual-active mode. In the multi-home single-active mode, a user-side CE is attributed to multiple network-side PEs, but only one master PE forwards traffic. In the multi-home multi-active mode, a user-side CE is attributed to multiple network-side PEs, and multiple PEs participate in traffic forwarding. Since the control plane and the forwarding plane are coupled, when the control plane is in the multi-home single-active mode, the forwarding plane is also in the multi-home single-active mode. When the control plane is in the multi-home multi-active mode, the forwarding plane is also in the multi-home multi-active mode. The forwarding plane usually specifies the active and standby status of the service node. The forwarding table in the forwarding plane is shown in Table 2:

Table 2

In the above Table 2, the forwarding table when the forwarding plane is in the multi-home single-active mode is listed. Table 2 takes the dual-home single-active mode as an example. When the main service node receives the pending service, since the forwarding order of the main service node is local priority forwarding, the main service node will forward the pending service; when the backup service node receives the pending service, since the forwarding order of the backup service node is remote priority forwarding, in the above Table 2, the remote end of the backup service node is the main service node, therefore, the backup service node will forward the pending service to the main service node, and then the main service node will forward the pending service. The forwarding table in the forwarding plane in the multi-home single-active mode refers to the above Table 2. The difference between the forwarding table in the forwarding plane in the multi-home multi-active mode and the corresponding forwarding table in the multi-home single-active mode is that the service node roles and service node forwarding order are different. The service nodes in Table 2 are all local priority forwarding as the main use, and remote forwarding as the backup. No further elaboration is given here.

The embodiment of the present application is to decouple the control plane and the forwarding plane in the EVPN, thereby enabling accurate control of different types of services under the same port link. Therefore, it is necessary to obtain the service to be processed, which can be any type of service in the network.

For example, the service types of the services to be processed may be home broadband Internet access services, government and enterprise dedicated line services, etc. The service requirement of home broadband Internet access services is to achieve load balancing in network transmission, and the service requirement of government and enterprise dedicated line services is to achieve precise flow control in network transmission.

After obtaining the service to be processed, in order to obtain the initial forwarding list of the service to be processed, it is also necessary to obtain the control plane to which the service to be processed belongs.

Step S32: when the control plane is in a preset state, an initial forwarding list corresponding to the to-be-processed service is determined from a forwarding plane associated with the control plane.

Since the control plane has a multi-home multi-active mode and a multi-home single-active mode, the embodiments of the present application will be described with the dual-home dual-active mode in the multi-home multi-active mode and the dual-home single-active mode in the multi-home single-active mode. Therefore, when the control plane is in the dual-home dual-active state, all business nodes corresponding to the service to be processed are first determined, and the forwarding order corresponding to each business node is determined, and then an initial forwarding list is generated based on the forwarding order corresponding to all business nodes. The initial forwarding list is a list normally generated by the control plane in the preset mode. In order to illustrate that the embodiments of the present application can meet the business requirements of different business types, the initial forwarding list is restricted to not meet the business requirements of the service to be processed.

When the control plane is in dual-homing single-active state, obtain BGP routing information. Since BGP routing information is used to confirm the active and standby status of the service node, the specific process of confirming the active and standby status of the service node is as follows:

The embodiment of the present application can determine the primary and backup status through the IP addresses and VLAN identifiers corresponding to each business node. The method for determining the primary and backup status of the business node based on the IP address is: sort the IP addresses in order from large to small, filter out the smallest IP address, and determine the business node corresponding to the smallest IP address, and then use the business node as the primary business node, and use other nodes except the primary business node as backup business nodes.

The method of determining the active/standby status of a service node based on the VLAN ID is as follows: obtaining the VLAN ID of each service node and the number of service nodes belonging to the same user side, and using the following formula 1 to calculate the serial number of the network side router. The formula 1 is as follows:

V mod N = i

In the above formula, V represents the VLAN ID of each service node, which can be any number between 1 and 4096, N represents the number of PEs that belong to the same CE, and i represents the sequence number of the PE.

Based on the above formula 1, the serial number of each service node can be calculated. When the serial number is 1, the service node corresponding to the serial number 1 is used as the main service node, and the service node with a serial number other than 1 is used as the backup service node.

After determining the primary service node and the backup service node, the primary forwarding order of the primary service node and the backup forwarding order of the backup service node are determined, and an initial forwarding list is generated based on the primary forwarding order and the backup forwarding order.

Through the above method, an initial forwarding list can be obtained based on the preset state of the control plane. The primary and backup states and forwarding order of different pending services in different modes of the control plane can be obtained through the initial forwarding list, which is conducive to adjusting the initial forwarding list.

Step S33: adjusting the initial forwarding list to a target forwarding list based on the service type of the service to be processed.

Since the initial forwarding list records the forwarding order and primary and backup status corresponding to a certain type of service, in order to meet the service requirements of different service types, it is necessary to adjust the initial forwarding list to a target forwarding list that meets the service requirements of the service to be processed based on the service type, thereby realizing the decoupling of the control plane and the forwarding plane. Therefore, it is necessary to extract all service nodes in the initial forwarding list, and then determine the primary service node and the backup service node from all service nodes, and then determine the service type and preset status of the service to be processed, and adjust the primary service node and/or the backup service node in the initial forwarding list based on the preset instruction, and use the adjusted initial forwarding list as the target forwarding list. The preset instruction is an instruction to instruct to adjust the initial forwarding list in the forwarding plane. In order to more clearly illustrate the process of obtaining the target forwarding list, it will be explained by way of example. The specific process of obtaining the target forwarding list is as follows:

A schematic diagram of forwarding services of different service types in the dual-homing dual-active mode is shown in FIG4 . In FIG4 , all services are forwarded from PE3 to CE1 via PE1 and PE2 respectively. The forwarding process of type A services to be processed is represented by a solid line, and the forwarding process of type B services to be processed is represented by a dotted line. CE is a router on the user side, and PE is a router on the network side.

If type A pending services are home broadband Internet access services and type B pending services are government and enterprise dedicated line services, since the business requirement of home broadband Internet access services is to achieve load balancing in network transmission, the business forwarding process implemented in the above Figure 4 can meet the business requirements of type A pending services. However, since the business requirement of type B pending services is to achieve precise flow control in the network, the forwarding process according to the dotted line in the above Figure 4 will not be able to achieve the business requirements of type B pending services.

In FIG4 , the initial forwarding list corresponding to the type B pending service is shown in Table 3:

table 3

In the above Table 3, the forwarding order of each service node is local priority forwarding as the main use, and remote forwarding as the backup. Since the preset state of the current control plane is dual-home dual-active, when the pending service is a B type pending service, only load balancing can be achieved in network transmission according to the forwarding order in Table 3. The forwarding list in the above Table 3 will not meet the service requirements of the pending service. Therefore, it is necessary to adjust the initial forwarding list based on the preset instruction, service type and dual-home dual-active state. The adjusted target forwarding list is shown in Table 4:

Table 4

The above Table 4 is the target forwarding list of the pending services. The forwarding order of the backup service node PE2 is adjusted to local (PE2) forwarding as backup, and remote (PE1) forwarding as primary. The main service node PE1 keeps the forwarding order unchanged, local (PE1) forwarding as primary, and remote (PE2) forwarding as backup. Therefore, the above Table 4 can meet the business needs of the pending services to achieve precise flow control in network transmission.

Under the same port link identifier, since the preset state of the control plane is determined, the forwarding table in the forwarding plane associated with the control plane is also determined. Therefore, by adjusting the initial forwarding list to the target forwarding list, the control plane and the forwarding plane can be decoupled, thereby meeting the business needs of the business to be processed.

Through the above method, the initial forwarding list is adjusted to a target forwarding list that meets the business requirements of the business to be processed based on the preset instructions, so that a forwarding list corresponding to the business to be processed is formed on the forwarding plane, thereby realizing the decoupling of the control plane and the forwarding plane, and realizing the business requirements corresponding to the business to be processed of different business types under the same port link.

Step S34: forwarding the pending service according to the target forwarding list.

The target forwarding list of the pending services has been determined above. When the main service node in the network fails and is re-determined, the main service node will change. When the main service node changes, the main service node and the backup service node will be swapped, and the forwarding order of the main service node and the backup service node after the swap will be reset.

For example: after the main business node and the backup business node are exchanged, the main business node is used as the target backup business node and the backup business node is used as the target main business node, and the forwarding order of the main business node is associated with the target main business node. The forwarding order of the target backup business node will be reset by the preset status of the control plane and the service type of the target backup business node.

When the standby service node fails, the standby forwarding order table corresponding to the standby service node at the time of failure will be obtained, and the forwarding plane will be controlled to use the standby forwarding order table as the target forwarding order table of the standby service node that has recovered from the failure. When the standby forwarding order table of the standby service node shows local priority forwarding, the target forwarding order table of the standby service node after the failure is recovered will also show local priority forwarding; when the standby forwarding order table of the standby service node shows remote priority forwarding, the target forwarding order table of the standby service node after the failure is recovered will also show remote priority forwarding.

After determining the target forwarding list of the service to be processed, the forwarding plane can forward the service to be processed based on the target forwarding list.

Based on the above description, the initial forwarding list is adjusted to a target forwarding list that meets the business requirements of the business to be processed, so that the forwarding lists corresponding to the different business types of the business to be processed can be determined, and the decoupling of the control plane and the forwarding plane is realized, so that the master-slave relationship in the forwarding table in the forwarding plane can be adjusted, and when a business node fails, it can quickly switch to the forwarding order in the forwarding table, thereby realizing the business requirements corresponding to different business types on the same port link.

Based on the same inventive concept, an embodiment of the present application further provides a service forwarding device, which is used to implement the function of a service forwarding method. Referring to FIG. 5 , the device includes:

An acquisition module 501 is used to obtain a service to be processed and a control plane corresponding to the service to be processed;

A determination module 502, configured to determine, when the control plane is in a preset state, an initial forwarding list corresponding to the to-be-processed service from a forwarding plane associated with the control plane;

An adjustment module 503, configured to adjust the initial forwarding list to a target forwarding list based on the service type of the service to be processed;

The forwarding module 504 is used to forward the pending business according to the target forwarding list.

In one possible design, the determination module 502 is specifically used to determine all service nodes corresponding to the service to be processed when the control plane is in a multi-home multi-active state, determine the forwarding order corresponding to each service node, and generate an initial forwarding list based on each forwarding order.

In one possible design, the determination module 502 is also used to determine the primary business node and the backup business node from all business nodes in the Border Gateway Protocol (BGP) routing information when the control plane is in a multi-homing single-active state, wherein the BGP routing information is used to confirm the primary and backup status of the business nodes, determine the primary forwarding order corresponding to the primary business node and the backup forwarding order corresponding to the backup business node, and generate the initial forwarding list corresponding to the to-be-processed business based on the primary forwarding order and the backup forwarding order.

In one possible design, the determination module 502 is also used to determine the IP address or VLAN ID corresponding to each business node, sort the IP addresses in a preset order, screen out the minimum IP address, and use the business node corresponding to the minimum IP address as the main business node, and other nodes except the main business node as backup business nodes, or bring the VLAN ID into a preset formula to calculate the serial number of each business node, and use the business node with serial number 1 as the main business node, and other nodes except the main business node as backup business nodes.

In one possible design, the adjustment module 503 is specifically used to extract all business nodes in the initial forwarding list, and determine the main business node and the backup business node from all the business nodes. When the business type of the to-be-processed business and the preset status are determined, the main business node and/or the backup business node in the initial forwarding list are adjusted based on preset instructions, and the adjusted initial forwarding list is used as the target forwarding list for the to-be-processed business.

In one possible design, the forwarding module 504 is specifically used to obtain the main business node corresponding to the business to be processed. When the main business node changes, the main business node and the backup business node are exchanged, and the forwarding order of the main business node and the backup business node after the exchange is set.

In one possible design, the forwarding module 504 is also used to obtain a backup service node corresponding to the service to be processed. When the backup service node fails and recovers, the backup forwarding order table corresponding to the backup service node fails is obtained, and the forwarding plane is controlled to use the backup forwarding order table as the target forwarding order table after the backup service node fails and recovers.

EVPN multi-homing multi-active and multi-homing single-active access modes are based on ESI configuration single-active or multi-active. The link identified by ESI can be ES based on physical ports or vES based on logical ports. In actual networks, multiple types of services are carried at the same time, and the service requirements of each type of service are also different. Multiple types of services on the user side are multi-homed to the same group of physical ports of the same PE device group (such as PE1\PE2 device group) through the user network. In order to distinguish different services, different vES can be configured to carry different services. For example, vES1, corresponding to VLAN1, carries VPN1, a type of home broadband service, and its load balancing mode is multi-homing multi-active; vES2, corresponding to VLAN2, carries VPN2, a type of government and enterprise dedicated line service, and its load balancing mode is multi-homing single-active.

The main business demand for home broadband Internet services is to carry traffic in the network in a load-sharing manner to fully improve network utilization. Currently, in the EVPN network, CE can access PE in a multi-home multi-active manner to achieve load sharing of services. The main business demand for government and enterprise private line services is precise QoS speed limit control of private lines, and bandwidth overage is not desired. Currently, in the EVPN network, CE can access PE in a multi-home single-active manner to achieve precise QoS speed limit control of services.

However, in order to support load sharing of multi-homing multi-active services, the user network on the CE side configures multiple access ports of the multi-homing CE on the PE side as aggregation ports, such as LAG, to achieve load sharing of services; however, the aggregation port will uniformly carry user traffic of all services, including multi-homing multi-active services and multi-homing single-active services. However, for multi-homing single-active services: when the user side sends traffic through the aggregation port, the aggregation port will forward the message according to its own load sharing strategy, and the PEs on the network side are each other's active and standby routers. The load sharing strategy on the user side may cause the message to be sent to the standby PE on the network side, and the standby PE will block the message, resulting in message loss.

In order to solve the above problems, the embodiment of the present application provides a service forwarding method, which is used to configure at least two vES on the same port link. When the user side load balances the multi-home single-active service to the backup service node, the backup service node can also forward the multi-home single-active service according to the preset forwarding rules, instead of blocking the multi-home single-active service, thereby avoiding the loss of messages. Among them, the method and device described in the embodiment of the present application are based on the same technical concept. Since the principles of the problems solved by the method and the device are similar, the embodiments of the device and the method can refer to each other, and the repeated parts will not be repeated.

7, the present application provides a service forwarding method, which can load balance the multi-homing single-active service to the backup service node on the user side, and the backup service node can also forward the multi-homing single-active service according to a preset forwarding rule instead of blocking the multi-homing single-active service, thereby avoiding the loss of the message. The method is applied to a virtual private network EVPN configured with at least two virtual Ethernet links vES, and the implementation process is as follows:

Step S71, the backup service node of the first vES receives the to-be-processed service sent by the CE;

The forwarding and transmission of services in the network need to be completed through the routers on the network side and the user side. In the EVPN network, various types of services on the user side are multi-homed to the same group of physical ports of the same PE device group (such as PE1\PE2 device group) through the user network; in order to distinguish different services, different vES can be configured to carry different services, such as vES1, corresponding to VLAN1, to carry the home broadband service VPN1, and its load sharing mode is multi-homing and multi-active; vES2, corresponding to VLAN2, to carry the government and enterprise private line service VPN2, and its load sharing mode is multi-homing and single-active. Therefore, the pending service sent by the CE is received, and the pending service can be any type of service in the network.

Step S72: when the service to be processed comes from the first vES, forward the service to be processed based on a preset local routing table entry.

Multiple types of services on the user side are multi-homed to the same group of physical ports of the same PE device group (such as PE1\PE2 device group) through the user network. In order to distinguish different services, different vES can be configured to carry different services, such as vES1, corresponding to VLAN1, to carry the home broadband service VPN1, and its load sharing mode is multi-homing and multi-active; vES2, corresponding to VLAN2, to carry the government and enterprise private line service VPN2, and its load sharing mode is multi-homing and single-active. For the convenience of description, in the embodiment of the present application, the vES with the load sharing mode of multi-homing and single-active is collectively referred to as the first vES, and the vES with the load sharing mode of multi-homing and multi-active is collectively referred to as the second vES.

The same group of physical ports is configured with at least the first vES and the second vES. In order to support load balancing of the second vES, the user network on the CE side will configure the access port as an aggregation port, such as LAG. However, the aggregation port will uniformly carry the user traffic of all services, including multi-home multi-active services and multi-home single-active services, that is, the aggregation port will also balance the user traffic of the first vES. In this way, the backup service node of the first vES may also receive the pending services of the first vES.

In the related art, when the backup service node of the first vES receives the pending service of the first vES, since the first vES is in a multi-home single-active mode, the backup service node will block the pending service, resulting in message loss. However, in this step, when the backup service node receives the pending service, no matter which vES the pending service comes from, it will query the local routing table entries stored locally, and forward the pending service according to the routing table entries recorded in the local routing table entries. Furthermore, if the routing table entry corresponding to the pending service is not found in the local routing table entry, the pending service can be forwarded according to the forwarding process of the relevant unknown message.

The pending business will not be blocked, thus avoiding message loss.

In one possible design, the method further includes:

When the service to be processed belongs to the first vES and comes from a local single-home CE or ES, the backup service node of the first vES blocks the service to be processed and sends the service to be processed to the primary service node of the first vES; wherein, when the service to be processed comes from the ES, the CE accesses the EVPN through the ES multi-home.

Specifically, since the local network side of the first vES usually only sets the service speed limit for the user side on the main service node, when the backup service node of the first vES receives the pending service sent by the ES of the CE or physical port that is locally assigned to the backup service node, and the pending service is the service of the local first vES, the backup service node will block the pending service and send the pending service to the main service node of the first vES through the backup path between the main and backup service nodes. The main service node can forward it according to the existing routing table entries. In this way, centralized QoS precise control can be achieved at the main service node.

The service to be processed is forwarded based on the target forwarding list and the local routing table entry; here, the target forwarding list is used to characterize the forwarding order of the primary and backup service nodes that meet the service requirements of the service to be processed.

In this step, first, the forwarding order of the network-side service nodes can be determined according to the target forwarding list to meet different types of pending services. Then, the pending services are forwarded based on the local routing table entries of the service nodes that receive the pending services. In particular, when the service node that receives the pending services is a backup service node, the pending services can still be forwarded according to the local routing table entries of the backup service node.

Accordingly, the determination of the target forwarding list may specifically refer to the implementation process of step S31 to step S33 in FIG3 . The specific implementation principle and process are similar to the determination process of the target forwarding list in FIG3 , and will not be repeated here.

When the control plane is in a multi-homing single-active state, determining a primary service node and a backup service node from all service nodes in the Border Gateway Protocol BGP routing information, wherein the BGP routing information is used to confirm the primary and backup states of the service nodes;

Determine the IP address or VLAN ID corresponding to each service node;

Obtaining the main service node corresponding to the service to be processed;

Obtaining a standby service node corresponding to the service to be processed;

Based on the same inventive concept, an embodiment of the present application further provides a service forwarding device, which is used to implement the function of a service forwarding method. Referring to FIG. 8 , the device is applied to a virtual private network EVPN configured with different vESs, and the device includes:

Receiving module 801 is used to receive pending services sent by CE. The forwarding and transmission of services in the network need to be completed through the routers on the network side and the user side. In the EVPN network, various types of services on the user side are multi-homed to the same group of physical ports of the same PE device group (such as PE1\PE2 device group) through the user network. In order to distinguish different services, different vES can be configured to carry different services. For example, vES1, corresponding to VLAN1, carries VPN1, a type of home broadband service, and its load sharing method is multi-homing and multi-active; vES2, corresponding to VLAN2, carries VPN2, a type of government and enterprise dedicated line service, and its load sharing method is multi-homing and single-active. Thus, the pending services sent by CE are received, and the pending services can be services of any type of service in the network.

The forwarding module 802 is used to forward the pending service based on the preset local routing table entry when the pending service comes from the first vES; wherein the preset state of the control plane of the first vES is a multi-home single-active state, and the device is arranged at the backup service node of the first vES. In the related art, when the backup service node of the first vES receives the pending service of the first vES, since the first vES is in a multi-home single-active mode, the forwarding module 802 of the backup service node will block the pending service, resulting in message loss. However, in the embodiment of the present application, the forwarding module 802 of the backup service node forwards the pending service according to the preset forwarding rules, and will not block the pending service, thereby avoiding message loss.

Various types of services on the user side are multi-homed to the same group of physical ports of the same group of PE equipment groups (such as PE1\PE2 equipment groups) through the user network. In order to distinguish different services, different vES can be configured to carry different services. For the convenience of expression, in the embodiment of the present application, the vES with a load sharing mode of multi-homing single active is collectively referred to as the first vES, and the vES with a load sharing mode of multi-homing multi-active is collectively referred to as the second vES.

The same group of physical ports is configured with at least the first vES and the second vES. In order to support the load balancing of the second vES, the user network on the CE side will configure the access port as an aggregation port, such as LAG; however, the aggregation port will uniformly carry the user traffic of all services, including multi-home multi-active services and multi-home single-active services, that is, the aggregation port will also balance the user traffic of the first vES. In this way, the backup service node receiving module 801 of the first vES may also receive the pending services of the first vES.

In a possible design, the forwarding module 802 is also used to block the pending service when the pending service belongs to the first vES and comes from a local single-home CE or ES, and send the pending service to the primary service node of the first vES; wherein, when the pending service comes from the ES, the CE accesses the EVPN through the ES multi-home. Since the local network side usually only sets the service speed limit on the user side on the primary service node, when the receiving module 801 of the backup service node of the first vES receives the pending service sent from the CE or ES of the physical port that is locally single-homed to the backup service node, and the pending service is the service of the local first vES, the receiving module 801 of the backup service node will block the pending service and send the pending service to the primary service node of the first vES through the backup path between the primary and backup service nodes, and the primary service node can forward it according to the existing routing table entries. In this way, centralized QoS precise control can be achieved at the primary service node. When the receiving module 801 of the backup service node receives the pending service, no matter which vES the pending service comes from, the forwarding module 802 will query the local routing table stored locally, and forward the pending service according to the routing table recorded in the local routing table. Furthermore, if the routing table corresponding to the pending service is not found in the local routing table, the pending service can be forwarded according to the forwarding process of the relevant unknown message.

In a possible design, the forwarding module 802 is specifically used to obtain the pending service and the control plane corresponding to the pending service; when the control plane is in a preset state, the initial forwarding list corresponding to the pending service is determined from the forwarding plane associated with the control plane; the initial forwarding list is adjusted to a target forwarding list based on the service type of the pending service; and the pending service is forwarded based on the target forwarding list and the local routing table entry. Here, the target forwarding list is used to characterize the forwarding order of the primary and backup service nodes that meet the service requirements of the pending service. Specifically, the forwarding module 802 can first determine the forwarding order of the service nodes according to the target forwarding list to meet different types of pending services. Then, the pending service is forwarded based on the local routing table entry of the service node that receives the pending service. In particular, when the service node that receives the pending service is the forwarding module 802 of the backup service node, the pending service can also be forwarded according to the local routing table entry of the backup service node.

Accordingly, the implementation principle and process of the forwarding module 802 can refer to the obtaining module, determining module, and adjusting module in the device shown in Figure 5. The implementation principles of the two are similar and will not be repeated here.

In one possible design, the forwarding module 802 is specifically used to determine all service nodes corresponding to the service to be processed when the control plane is in a multi-home multi-active state, determine the forwarding order corresponding to each service node, and generate an initial forwarding list based on each forwarding order.

In one possible design, the forwarding module 802 is also used to determine the primary business node and the backup business node from all business nodes in the Border Gateway Protocol (BGP) routing information when the control plane is in a multi-homing single-active state, wherein the BGP routing information is used to confirm the primary and backup status of the business nodes, determine the primary forwarding order corresponding to the primary business node and the backup forwarding order corresponding to the backup business node, and generate the initial forwarding list corresponding to the to-be-processed business based on the primary forwarding order and the backup forwarding order.

In one possible design, the forwarding module 802 is also used to determine the IP address or VLAN ID corresponding to each business node, sort the IP addresses in a preset order, screen out the minimum IP address, and use the business node corresponding to the minimum IP address as the main business node, and other nodes except the main business node as backup business nodes, or bring the VLAN ID into a preset formula to calculate the serial number of each business node, and use the business node with serial number 1 as the main business node, and other nodes except the main business node as backup business nodes.

In one possible design, the forwarding module 802 is specifically used to extract all business nodes in the initial forwarding list, and determine the main business node and the backup business node from all the business nodes. When the business type of the service to be processed and the preset status are determined, the main business node and/or the backup business node in the initial forwarding list are adjusted based on the preset instructions, and the adjusted initial forwarding list is used as the target forwarding list for the service to be processed.

In one possible design, the forwarding module 802 is specifically used to obtain the main business node corresponding to the service to be processed. When the main business node changes, the main business node and the backup business node are exchanged, and the forwarding order of the main business node and the backup business node after the exchange is set.

In one possible design, the forwarding module 802 is also used to obtain a backup service node corresponding to the service to be processed. When the backup service node fails and recovers, the backup forwarding order table corresponding to the backup service node fails is obtained, and the forwarding plane is controlled to use the backup forwarding order table as the target forwarding order table after the backup service node fails and recovers.

An electronic device is also provided in an embodiment of the present application. The electronic device can implement the functions of the service forwarding device as shown in FIG. 5 or FIG. 8 . Referring to FIG. 6 , the electronic device includes:

At least one processor 601, and a memory 602 connected to at least one processor 601. The specific connection medium between the processor 601 and the memory 602 is not limited in the embodiment of the present application. FIG. 6 takes the connection between the processor 601 and the memory 602 via the bus 600 as an example. The bus 600 is represented by a bold line in FIG. 6, and the connection between other components is only for schematic illustration and is not intended to be limiting. The bus 600 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in FIG. 6, but it does not mean that there is only one bus or one type of bus. Alternatively, the processor 601 can also be called a controller, and there is no restriction on the name.

In the embodiment of the present application, the memory 602 stores instructions that can be executed by at least one processor 601. The at least one processor 601 can execute a service forwarding method discussed in FIG. 3 or a service forwarding method discussed in FIG. 7 by executing the instructions stored in the memory 602. The processor 601 can implement the functions of each module in the device shown in FIG. 5 or FIG. 8.

Among them, the processor 601 is the control center of the device, and can use various interfaces and lines to connect the various parts of the entire control device. By running or executing instructions stored in the memory 602 and calling the data stored in the memory 602, the various functions of the device and processing data, the device can be monitored as a whole.

In one possible design, the processor 601 may include one or more processing units, and the processor 601 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the modem processor may not be integrated into the processor 601. In some embodiments, the processor 601 and the memory 602 may be implemented on the same chip, and in some embodiments, they may also be implemented separately on separate chips.

Processor 601 can be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of a service forwarding method disclosed in the embodiments of the present application can be directly embodied as a hardware processor execution, or a combination of hardware and software modules in the processor.

The memory 602 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules. The memory 602 may include at least one type of storage medium, such as flash memory, hard disk, multimedia card, card-type memory, random access memory (Random Access Memory, RAM), static random access memory (Static Random Access Memory, SRAM), programmable read-only memory (Programmable Read Only Memory, PROM), read-only memory (Read Only Memory, ROM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), magnetic memory, disk, optical disk, etc. The memory 602 is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 602 in the embodiment of the present application can also be a circuit or any other device that can realize a storage function, which is used to store program instructions and/or data.

By designing and programming the processor 601, the code corresponding to a service forwarding method introduced in the above embodiment can be fixed into the chip, so that the chip can execute a service forwarding step of the embodiment shown in Figure 3 when running. How to design and program the processor 601 is a technology well known to those skilled in the art and will not be described here.

An embodiment of the present application also provides a storage medium storing computer instructions. When the computer instructions are executed on a computer, the computer executes a service forwarding method discussed in FIG. 3 or a service forwarding method discussed in FIG. 7 .

In some possible implementations, various aspects of the service forwarding method provided by the present application may also be implemented in the form of a program product, which includes a program code. When the program product is run on an apparatus, the program code is used to enable the control device to execute the steps of the service forwarding method according to various exemplary embodiments of the present application described above in this specification.

The present invention is described with reference to the flowchart and/or block diagram of the method, device (system), and computer program product according to the embodiment of the present invention. It should be understood that each process and/or box in the flowchart and/or block diagram, as well as the combination of the process and/or box in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

Although the optional embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the optional embodiments and all changes and modifications that fall within the scope of the present invention.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

A service forwarding method, characterized by comprising:

Obtaining a service to be processed and a control plane corresponding to the service to be processed;

When the control plane is in a preset state, determining an initial forwarding list corresponding to the to-be-processed service from a forwarding plane associated with the control plane, wherein the initial forwarding list does not meet the service requirements of the to-be-processed service, and the preset state is a multi-homing multi-active state or a multi-homing single-active state;

Adjusting the initial forwarding list to a target forwarding list based on the service type of the service to be processed;

The to-be-processed business is forwarded according to the target forwarding list.
The method according to claim 1, characterized in that determining the initial forwarding list corresponding to the to-be-processed service from the forwarding plane associated with the control plane comprises:

When the control plane is in a multi-home multi-active state, determining all service nodes corresponding to the service to be processed;

Determine the forwarding order corresponding to each service node, and generate an initial forwarding list based on each forwarding order.
The method according to claim 1, characterized in that determining the initial forwarding list corresponding to the to-be-processed service from the forwarding plane associated with the control plane comprises:

When the control plane is in a multi-homing single-active state, a primary service node and a backup service node are determined from all service nodes in Border Gateway Protocol (BGP) routing information, wherein the BGP routing information is used to confirm the primary and backup status of the service nodes;

Determine a primary forwarding order corresponding to the primary service node and a backup forwarding order corresponding to the backup service node;

The initial forwarding list corresponding to the to-be-processed service is generated based on the primary forwarding order and the backup forwarding order.
The method according to claim 3, characterized in that determining the primary service node and the backup service node from all service nodes in the BGP routing information comprises:

Determine the IP address or VLAN ID corresponding to each service node;

Sort the IP addresses in a preset order, select the smallest IP address, and use the service node corresponding to the smallest IP address as the main service node, and use other nodes except the main service node as backup service nodes; or

The VLAN identifier is brought into a preset formula to calculate the serial number of each service node, and the service node with serial number 1 is used as the main service node, and the other nodes except the main service node are used as backup service nodes.
The method according to claim 1, characterized in that adjusting the initial forwarding list to a target forwarding list based on the service type of the service to be processed comprises:

Extracting all service nodes in the initial forwarding list, and determining a primary service node and a backup service node from all service nodes;

When the service type and the preset state of the to-be-processed service are determined, adjusting the primary service node and/or the backup service node in the initial forwarding list based on a preset instruction, wherein the preset instruction is an instruction to instruct adjustment of the initial forwarding list in the forwarding plane;

The adjusted initial forwarding list is used as the target forwarding list for the service to be processed.
The method according to claim 1, characterized in that before forwarding the pending service according to the target forwarding list, it also includes:

Obtaining the main service node corresponding to the service to be processed;

When the main service node changes, the main service node and the backup service node are exchanged, and a forwarding order of the main service node and the backup service node after the exchange is set.
The method according to claim 1, characterized in that before forwarding the pending service according to the target forwarding list, it also includes:

Obtaining a standby service node corresponding to the service to be processed;

When the standby service node fails and recovers, a standby forwarding order table corresponding to the standby service node fails is obtained, and the forwarding plane is controlled to use the standby forwarding order table as a target forwarding order table after the standby service node fails and recovers.
A service forwarding device, comprising:

An acquisition module, used to obtain a service to be processed and a control plane corresponding to the service to be processed;

A determination module, configured to determine, when the control plane is in a preset state, an initial forwarding list corresponding to the to-be-processed service from a forwarding plane associated with the control plane;

An adjustment module, configured to adjust the initial forwarding list to a target forwarding list based on the service type of the service to be processed;

A forwarding module is used to forward the pending business according to the target forwarding list.
A service forwarding method, characterized in that the method is applied to a virtual private network EVPN configured with at least two virtual Ethernet links vES, and the method comprises:

The standby service node of the first vES receives the to-be-processed service sent by the customer edge device CE;

When the service to be processed comes from the first vES, the service to be processed is forwarded based on a preset local routing table entry; wherein the preset state of the control plane of the first vES is a multi-homing single active state.
The method according to claim 9, characterized in that after the backup service node of the first vES receives the to-be-processed service sent by the CE, it also includes:

When the service to be processed belongs to the first vES and comes from a single-homed CE or an Ethernet link ES, the backup service node of the first vES blocks the service to be processed and sends the service to be processed to the primary service node of the first vES;

When the service to be processed comes from the ES, the CE accesses the EVPN through the ES.
The method according to claim 9 or 10, characterized in that forwarding the service to be processed based on a preset local routing table entry comprises: obtaining the service to be processed and a control plane corresponding to the service to be processed;

When the control plane is in a preset state, determining an initial forwarding list corresponding to the to-be-processed service from a forwarding plane associated with the control plane, wherein the initial forwarding list does not meet the service requirements of the to-be-processed service, and the preset state is a multi-homing multi-active state or a multi-homing single-active state;

Adjusting the initial forwarding list to a target forwarding list based on the service type of the to-be-processed service;

The to-be-processed service is forwarded based on the target forwarding list and the local routing table entry.
The method according to claim 11, characterized in that determining the initial forwarding list corresponding to the to-be-processed service from the forwarding plane associated with the control plane comprises:

When the control plane is in a multi-home multi-active state, determining all service nodes corresponding to the service to be processed;

Determine the forwarding order corresponding to each service node, and generate an initial forwarding list based on each forwarding order.
The method according to claim 11, characterized in that determining the initial forwarding list corresponding to the to-be-processed service from the forwarding plane associated with the control plane comprises:

When the control plane is in a multi-homing single-active state, determining a primary service node and a backup service node from all service nodes in the Border Gateway Protocol BGP routing information, wherein the BGP routing information is used to confirm the primary and backup status of the service node;

Determine a primary forwarding order corresponding to the primary service node and a backup forwarding order corresponding to the backup service node;

The initial forwarding list corresponding to the to-be-processed service is generated based on the primary forwarding order and the backup forwarding order.
The method according to claim 13, characterized in that determining the primary service node and the backup service node from all service nodes in the BGP routing information comprises:

Determine the IP address or VLAN ID corresponding to each service node;

Sort the IP addresses in a preset order, select the smallest IP address, and use the service node corresponding to the smallest IP address as the main service node, and use other nodes except the main service node as backup service nodes; or

The VLAN identifier is brought into a preset formula to calculate the serial number of each service node, and the service node with serial number 1 is used as the main service node, and the other nodes except the main service node are used as backup service nodes.
The method according to claim 11, characterized in that adjusting the initial forwarding list to a target forwarding list based on the service type of the service to be processed comprises:

Extracting all service nodes in the initial forwarding list, and determining a primary service node and a backup service node from all service nodes;

When the service type and the preset state of the to-be-processed service are determined, adjusting the primary service node and/or the backup service node in the initial forwarding list based on a preset instruction, wherein the preset instruction is an instruction to instruct adjustment of the initial forwarding list in the forwarding plane;

The adjusted initial forwarding list is used as the target forwarding list for the service to be processed.
The method according to claim 11, characterized in that after determining the target forwarding list, it also includes:

Obtaining the main service node corresponding to the service to be processed;

When the main service node changes, the main service node and the backup service node are exchanged, and a forwarding order of the main service node and the backup service node after the exchange is set.
The method according to claim 11, characterized in that after determining the target forwarding list, it also includes:

Obtaining a standby service node corresponding to the service to be processed;

When the standby service node fails and recovers, a standby forwarding order table corresponding to the standby service node fails is obtained, and the forwarding plane is controlled to use the standby forwarding order table as a target forwarding order table after the standby service node fails and recovers.
A service forwarding device, characterized in that the device is applied to a virtual private network EVPN configured with different vESs, and the device includes:

A receiving module, used for receiving pending services sent by CE;

A forwarding module is used to forward the pending service based on a preset local routing table entry when the pending service comes from the first vES; wherein the preset state of the control plane of the first vES is a multi-home single-active state, and the device is set at the backup service node of the first vES.
An electronic device, comprising:

Memory, used to store computer programs;

A processor, for implementing the method steps described in any one of claims 1 to 7 or the method steps described in any one of claims 9 to 17 when executing the computer program stored in the memory.
A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method steps described in any one of claims 1 to 7 or the method steps described in any one of claims 9 to 17 are implemented.