WO2022143572A1

WO2022143572A1 - Message processing method and related device

Info

Publication number: WO2022143572A1
Application number: PCT/CN2021/141825
Authority: WO
Inventors: 鲍磊; 廖婷; 陈新隽; 郑娟; 肖亚群; 徐菊华; 陈亮
Original assignee: 华为技术有限公司
Priority date: 2020-12-29
Filing date: 2021-12-28
Publication date: 2022-07-07
Also published as: CN114697277A

Abstract

Disclosed in embodiments of the present application are a message processing method and a related device. A first network device obtains a first message that comprises a first destination address and the identifier of a first network slice, the first destination address corresponding to a first process, determines a first sub-interface in a target physical interface according to the first destination address and the identifier of the first network slice, and sends the first message to a second network device on the basis of the first sub-interface; the first network device obtains a second message that comprises a second destination address and the identifier of the first network slice, the second destination address corresponding to a second process, determines the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network slice, and sends the second message to the second network device on the basis of the first sub-interface. Hence, in a network scenario where a pair of network devices jointly run multiple processes and correspond to multiple identical network slices, a small number of sub-interfaces are configured to achieve accurate transmission of messages between the pair of network devices.

Description

A message processing method and related equipment

This application claims the priority of the Chinese patent application with the application number 202011598611.2 and the application title "A message processing method and related equipment" filed with the State Intellectual Property Office of China on December 29, 2020, the entire contents of which are incorporated by reference in this application.

technical field

The present application relates to the field of communication technologies, and in particular, to a message processing method and related equipment.

Background technique

With the development of communication technology, there is a networking form in which a pair of network devices is shared by multiple processes. The pair of network devices is connected through a pair of physical interfaces, and the network device can deploy multiple sub-interfaces on the physical interface. Each sub-interface is bound to a corresponding process to achieve routing isolation between processes.

When there is a need for sharding in the network, in order to isolate shard resources, a sub-interface is usually allocated to each network shard under each process. Assuming that the number of network shards under each process is the same, then the physical interface The number of sub-interfaces that need to be divided is equal to the product of the number of processes to which the pair of network devices belongs and the number of network fragments under each process. In this way, if too many sub-interfaces are allocated on a physical interface, it is not only difficult to deploy, manage and maintain the sub-interfaces, but also because network sharding requires the resources of the bound sub-interfaces, so too many sub-interfaces are allocated. This results in too many resources to be reserved, which greatly reduces the scalability of the physical interface, and may also cause a problem that the resource demands on the physical interface exceed the tolerable range of the physical interface.

Based on this, there is an urgent need to provide a technical solution to solve the problem of configuring sub-interfaces in a scenario where a pair of network devices share multiple processes and these processes have network fragmentation requirements.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a packet processing method and related equipment. In a scenario where a pair of network devices share multiple processes and these processes have network fragmentation requirements, the network fragmentation is combined with a subsection of reserved resources in a physical interface. The interface is bound, and the network device can send the received packet corresponding to the same physical interface according to the sub-interface to which the network fragment is bound. It is not necessary to allocate each network fragment under each process. A sub-interface with reserved resources greatly reduces the number of sub-interfaces to be configured on a physical interface.

In a first aspect, an embodiment of the present application provides a packet processing method, and the method is applied to a scenario in which a first network device is connected to a second network device through the target physical interface, wherein the first network device and the second network device The device belongs to multiple identical network segments, the multiple network segments include the first network segment, the first network device and the second network device run multiple processes, the multiple processes include the first process and the the second process. In specific implementation, taking the first network device forwarding the first packet carrying the first network fragment identifier on the first process and forwarding the second packet carrying the first network fragment identifier on the second process as an example, the The operations performed by the method may include: the first network device obtains a first packet, the destination address of the first packet is the first destination address, the first packet includes the identifier of the first network fragment, and the first destination address corresponds to The first process, in this way, the first network device determines the first sub-interface in the target physical interface according to the first destination address and the identifier of the first network fragment, and sends the information to the second network device based on the first sub-interface. The first packet is described; the first network device obtains a second packet, the destination address of the second packet is the second destination address, the second packet includes the identifier of the first network fragment, and the second destination address corresponds to The second process, the second process is different from the first process, in this way, the first network device determines the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network fragment, and based on the The first sub-interface sends the second packet to the second network device. It can be seen that in a scenario where a pair of network devices jointly run multiple processes and these processes have network fragmentation requirements, in the method provided by this embodiment of the present application, under the physical interface, each network fragment is allocated and bound to a sub-process Interface, which allocates sub-interfaces equal to the number of processes for multiple processes at most. Among them, the sub-interface corresponding to the network shard reserves resources that can meet the resource requirements of the network shard, and the sub-interface bound to the process is used for Open the route between the pair of network devices without reserving resources. Among them, the sub-interface bound to the process can be different from the sub-interface allocated for the network shard, or it can be reused as the sub-interface allocated for the network shard. In this way, there is no need to allocate a sub-interface for each network shard under each process. Sub-interfaces that reserve resources greatly reduce the number of sub-interfaces to be configured on a physical interface. Therefore, according to the method provided by the embodiment of the present application, when the first network device in the pair of network devices receives a message running in a different process but corresponding to the same network fragment, it can be based on the destination address of the message and the network fragment. The identifier determines the sub-interface bound to the identifier of the network fragment under the physical interface, so that the determined sub-interface is used to send a packet to the second network device in the pair of network devices. In a network scenario where one process corresponds to multiple identical network segments, the accurate transmission of packets between the pair of network devices can be achieved by configuring fewer sub-interfaces.

Wherein, the multiple processes in the embodiments of the present application are Interior Gateway Protocol (English: Interior Gateway Protocol, referred to as: IGP) processes, for example, may be Intermediate System-to-Intermediate System (English: Intermediate System-to-Intermediate System, referred to as: ISIS) processes ) process or Open Shortest Path First (English: Open Shortest Path First, referred to as: OSPF) process.

If the first destination address is learned through the IGP route in the first process, the first process may be called a process corresponding to the first destination address. If the second destination address is learned through the IGP route in the second process, the second process may be called a process corresponding to the second destination address.

Wherein, the reserved resources on the first sub-interface meet the resource requirements of the first network slice.

In a possible implementation manner, the process of determining the sub-interface actually forwarded according to the destination address in the packet and the identifier of the network fragment, taking the first network device forwarding the first packet as an example, may include, for example: The first network device first determines a second sub-interface corresponding to the first process for the first packet according to the first destination address, and the second sub-interface belongs to the target physical interface; then, the first network device determines the second sub-interface according to the first network The identifier of the slice is to determine the corresponding first sub-interface in the target physical interface of the first packet. The second sub-interface is the same as the first sub-interface, or the second sub-interface is different from the first sub-interface. Taking the first network device forwarding the second packet as an example, for example, it may include: the first network device first determines a fourth sub-interface corresponding to the second process for the second packet according to the second destination address, where the fourth sub-interface belongs to the target physical interface; then, the first network device determines the corresponding first sub-interface in the target physical interface for the second packet according to the identifier of the first network fragment. The second sub-interface is the same as the first sub-interface, or the second sub-interface is different from the first sub-interface, but the second sub-interface is different from the fourth sub-interface. In some examples, the second sub-interface or the fourth sub-interface may also be replaced with the target physical interface, so as to achieve the purpose of being routable to the second network device.

In a possible implementation manner, for the first network device to forward the third packet carrying the identifier of the second network fragment on the third process, the operations performed by the method may further include: the first network device obtains the third packet The destination address of the third packet is the third destination address, the third packet includes the identifier of the second network fragment, the third destination address corresponds to the third process, and the multiple processes in this embodiment of the present application include all Describe the third process, the third process is different from the first process and the second process; like this, the first network device determines the third sub-interface in the target physical interface according to the third destination address and the identifier of the second network fragment, and, The third packet is sent to the second network device based on the third sub-interface. It can be seen that under the physical interface, a sub-interface is allocated and bound to the second network fragment and the first network fragment, and a maximum of sub-interfaces equal to the number of processes are allocated to multiple processes. The sub-interface reserves resources that can meet the resource requirements of the network fragment, and the sub-interface bound to the process is used to open up the route between the pair of network devices. It can be achieved by configuring fewer sub-interfaces without reserving resources. The accurate transmission of messages between the pair of network devices.

The methods provided in the embodiments of the present application are applicable to Multi-Protocol Label Switching (English: Multi-Protocol Label Switching, MPLS for short) networks, Internet Protocol version 4 (English: Internet Protocol version 4, IPv4 for short) networks, or the first Internet Protocol version 6 (English: Internet Protocol version 6, referred to as: IPv6) network. If the method is applied to an IPv6 network, the first packet is an IPv6 packet, and the identifier of the first network fragment can be carried in the Hop by Hop (English: Hop by Hop, abbreviated: HBH) option header of the first packet Or in the Destination Option Header (English: Destination Option Header, DOH for short). If the method is applied to an IPv4 network, the first packet is an IPv4 packet, and the identifier of the first network fragment can be carried in the Options field of the first packet. The TLV field is extended in the Options field, and the identifier of the first network fragment is carried by the extended TLV field. If the method is applied to an MPLS network, the first packet is an MPLS packet, and the MPLS label stack of the first packet may include an indication label, where the indication label is used to indicate that the next MPLS label of the indication label carries the first MPLS label. An identifier of a network fragment, wherein both the indicating label and the label carrying the identifier of the first network fragment are MPLS identifiers. For example, the label carrying the identifier of the first network segment may be located at the bottom of the MPLS label stack.

In a second aspect, an embodiment of the present application further provides a packet processing apparatus, the apparatus is applied to a first network device, and the apparatus may include: a first obtaining unit, a first determining unit, a first sending unit, a second obtaining unit unit, a second determining unit and a second sending unit. The first obtaining unit is configured to obtain a first packet, the destination address of the first packet is the first destination address, the first packet includes the identifier of the first network fragment, and the first destination address corresponds to a first process; a first determining unit, configured to determine a first sub-interface in a target physical interface according to the first destination address and the identifier of the first network fragment; a first sending unit, configured to based on the first sub-interface A sub-interface sends the first packet to the second network device; a second obtaining unit is configured to obtain a second packet, the destination address of the second packet is the second destination address, the second packet Including the identifier of the first network fragment, the second destination address corresponds to a second process, and the second process is different from the first process; a second determining unit is configured to The identifier of the first network fragment determines the first sub-interface in the target physical interface; a second sending unit is configured to send the second network device to the second network device based on the first sub-interface message. The first network device is connected to the second network device through the target physical interface, the first network device and the second network device belong to multiple identical network slices, and the multiple network The fragmentation includes the first network fragmentation, and the first network device and the second network device run a plurality of processes, the plurality of processes including the first process and the second process.

In a possible implementation manner, the reserved resources on the first sub-interface meet the resource requirements of the first network slice.

In a possible implementation manner, the first determination unit may include: a first determination subunit and a second determination subunit. The first determining subunit is configured to determine, according to the first destination address, a second sub-interface corresponding to the first process for the first packet, where the second sub-interface belongs to the target physical interface and a second determining subunit, configured to determine the corresponding first subinterface in the target physical interface for the first packet according to the identifier of the first network fragment. The second sub-interface is the same as the first sub-interface, or the second sub-interface is different from the first sub-interface.

In a possible implementation manner, the apparatus may further include: a third obtaining unit, a third determining unit, and a third sending unit. The third obtaining unit is configured to obtain a third packet, the destination address of the third packet is the third destination address, the third packet includes the identifier of the second network fragment, and the third destination The address corresponds to a third process, the plurality of processes include the third process, and the third process is different from the first process and the second process; a third determination unit is used to determine the third process according to the third purpose The address and the identifier of the second network segment determine a third sub-interface in the target physical interface; a third sending unit is configured to send the third sub-interface to the second network device based on the third sub-interface message.

In a possible implementation manner, the multiple processes are interior gateway protocol IGP processes.

In a possible implementation manner, the apparatus is suitable for MPLS network, IPv4 network or IPv6 network.

It should be noted that the message processing device provided in the second aspect is used to perform the relevant operations mentioned in the first aspect. For the specific implementation and the effect achieved, reference can be made to the relevant description of the first aspect. No longer.

In a third aspect, an embodiment of the present application further provides a network device, including: a memory and a processor. The memory is used for storing program codes or instructions; the processor is used for running the program codes or instructions, so that the network device executes the method provided in the first aspect above.

In a fourth aspect, embodiments of the present application further provide a computer-readable storage medium, where program codes or instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer can execute any of the above-mentioned first aspects. A method provided in a possible implementation.

In a fifth aspect, an embodiment of the present application further provides a computer program product, which, when the computer program product runs on a network device, enables the network device to execute the method provided in any possible implementation manner of the first aspect.

In a sixth aspect, the present application provides a network device, the network device comprising: a main control board and an interface board. The main control board includes: a first processor and a first memory. The interface board includes: a second processor, a second memory and an interface card. The main control board and the interface board are coupled.

The first memory can be used to store program codes, and the first processor is used to call the program codes in the first memory to perform the following operations: determine the target physical interface according to the first destination address and the identifier of the first network slice. a first sub-interface; determining the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network fragment.

The second memory can be used to store program codes, and the second processor is used to call the program codes in the second memory, triggering the interface card to perform the following operations: obtaining a first message, the destination address of the first message being the first purpose address, the first packet includes the identifier of the first network fragment, the first destination address corresponds to the first process; the first packet is sent to the second network device based on the first sub-interface; the second packet is obtained The destination address of the second packet is the second destination address, the second packet includes the identifier of the first network fragment, the second destination address corresponds to the second process, and the second process Different from the first process; sending the second packet to the second network device based on the first sub-interface.

In a possible implementation manner, an inter-process communication (inter-process communication, IPC) channel is established between the main control board and the interface board, and the main control board and the interface board communicate through the IPC channel.

In a seventh aspect, the present application provides a chip including a memory and a processor, where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory to execute the method in the first aspect.

Optionally, the above chip only includes a processor, and the processor is configured to read and execute the computer program stored in the memory, and when the computer program is executed, the processor executes the method in the first aspect.

In an eighth aspect, an embodiment of the present application further provides a network system, where the network system may include a first network device and a second network device. The first network device is configured to execute the method in the first aspect; the second network device is configured to receive a packet sent by the first network device based on the determined sub-interface.

Description of drawings

FIG. 1 is a schematic structural diagram of a network scenario in an embodiment of the present application;

2a is a schematic diagram of a sub-interface between a network device 21 and a network device 22 in an embodiment of the application;

FIG. 2b is another schematic diagram of a sub-interface between the network device 21 and the network device 22 in the embodiment of the application;

FIG. 3a is another schematic diagram of the sub-interface between the network device 21 and the network device 22 in the embodiment of the application;

FIG. 3b is another schematic diagram of the sub-interface between the network device 21 and the network device 22 in the embodiment of the application;

FIG. 3c is another schematic diagram of the sub-interface between the network device 21 and the network device 22 in the embodiment of the application;

FIG. 4 is a schematic structural diagram of another network scenario in an embodiment of the present application;

FIG. 5 is a schematic flowchart of a packet processing method 100 provided by an embodiment of the present application;

6a is a schematic diagram of a format of a first message in an embodiment of the present application;

FIG. 6b is a schematic diagram of still another format of the first message in the embodiment of the present application;

FIG. 6c is a schematic diagram of yet another format of the first message in the embodiment of the present application;

FIG. 7 is a schematic structural diagram of a message processing apparatus 700 according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a network device 800 in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a network device 900 in an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a network system 1000 in an embodiment of the present application.

Detailed ways

In order to improve the reliability of the network, a pair of network devices that can be shared by multiple network topologies is usually deployed between multiple connected network topologies. shared by multiple processes.

For example, in the network scenario shown in FIG. 1 , it may include: network devices 11 to 16 , network device 21 and network device 22 , the network scenario includes ring 1 , ring 2 and ring 3 , and ring 1 includes network devices 11. Network device 21 and network device 22, ring 2 includes network device 12, network device 13, network device 14, network device 21 and network device 22, ring 3 includes network device 15, network device 16, network device 21 and network device twenty two. Ring 1, Ring 2, and Ring 3 correspond to Process 1, Process 2, and Process 3, respectively. It can be seen that the process 1 , the process 2 and the process 3 share the network device 21 and the network device 22 , and the network device 21 is connected to the physical interface 2 of the network device 22 through the physical interface 1 .

When there is no network fragmentation, in order to achieve routing isolation between processes, the network device 21 allocates and binds a sub-interface to each process on the physical interface 1. As shown in Figure 2a, the network device 21 and the network device 22 are divided into two sub-interfaces. A pair of physical interfaces between them may include sub-interface 1, sub-interface 2, and sub-interface 3. In this way, when the traffic of the process 1 is forwarded through the network device 21 , the traffic can be sent to the network device 22 at the network device 21 through the sub-interface 3 on the physical interface 1 .

When performing network sharding, in order to achieve isolation of allocated resources, the network device 21 allocates and binds a sub-interface to each network shard under each process on the physical interface 1. It is assumed that the network shard under each process If the number of slices is the same, then the number of sub-interfaces to be allocated on a pair of physical interfaces between network device 21 and network device 22 is equal to the product of the number of processes to which the pair of network devices belongs and the number of network slices under each process. . For example, process 1, process 2 and process 3 are all divided into network slice 1 and network slice 2, then, as shown in Figure 2b, a pair of physical interfaces between network device 21 and network device 22 may include sub-interfaces 11. Sub-interface 12, sub-interface 21, sub-interface 22, sub-interface 31 and sub-interface 32, a total of 6 sub-interfaces. In this way, when the traffic carrying the network segment 2 on the process 3 is forwarded through the network device 22 , the traffic can be sent to the network device 21 at the network device 22 through the sub-interface 32 on the physical interface 2 .

It can be seen that in a scenario where a pair of network devices jointly runs multiple processes and these processes have network fragmentation requirements, it is necessary to allocate too many sub-interfaces on the physical interface connecting the pair of network devices, not only deploying, managing and maintaining sub-interfaces is relatively difficult. In addition, since network slicing has requirements for the resources of the sub-interfaces bound to it, allocating too many sub-interfaces leads to too many resources to be reserved, which greatly reduces the scalability of the physical interface, and may also occur. The resource requirement for a physical interface exceeds the tolerable range of the physical interface.

Based on this, in a scenario where a pair of network devices jointly run multiple processes and these processes require network sharding, the embodiment of the present application provides a sub-interface configuration scheme. Under the physical interface, each network shard is allocated And bind a sub-interface to allocate a maximum of sub-interfaces equal to the number of processes for multiple processes. Among them, the sub-interface corresponding to the network shard reserves resources that can meet the resource requirements of the network shard, and the sub-interfaces bound to the process are reserved. The sub-interface is used to open up the route between the pair of network devices without reserving resources. Among them, the sub-interface bound to the process can be different from the sub-interface allocated for the network shard, or it can be reused as the sub-interface allocated for the network shard. In this way, there is no need to allocate a sub-interface for each network shard under each process. Sub-interfaces that reserve resources greatly reduce the number of sub-interfaces to be configured on a physical interface. However, according to the sub-interface configuration solution provided by the embodiment of the present application, when the first network device in the pair of network devices receives a packet running in a different process but corresponding to the same network fragment, it can be based on the destination address of the packet and the network The identifier of the fragment determines the sub-interface bound to the identifier of the network fragment under the physical interface, so that the determined sub-interface is used to send a packet to the second network device in the pair of network devices. In a network scenario in which multiple processes are running and correspond to multiple identical network segments, accurate packet transmission between the pair of network devices can be achieved by configuring fewer sub-interfaces.

Still taking the network scenario shown in FIG. 1 as an example, based on the sub-interface configuration solution provided by the embodiment of the present application, the sub-interfaces allocated on a pair of physical interfaces between the network device 21 and the network device 22 include, but are not limited to, FIG. 3 a . , Figure 3b and Figure 3c.

As an example, as shown in FIG. 3 a , the sub-interfaces allocated on a pair of physical interfaces between the network device 21 and the network device 22 include sub-interface 1 to sub-interface 5, 5 sub-interfaces in total. Among them, sub-interface 1 to sub-interface 3 correspond to process 1 to process 3 respectively, sub-interface 1 to sub-interface 3 do not need to reserve resources, sub-interface 4 and sub-interface 5 are bound to network slice 1 and network slice 2 respectively, and the sub-interface The reserved resources on 4 meet the resource requirements of network slice 1, and the reserved resources on sub-interface 5 meet the resource requirements of network slice 2. In this way, when the traffic carrying network fragment 2 on process 3 is forwarded through network device 22, the traffic first determines sub-interface 2 according to the destination address at network device 22, and determines that sub-interface 2 corresponds to physical interface 2, and then, you can view the physical interface Sub-interface 5 bound to network slice 2 on physical interface 2, so that traffic is sent to network device 21 through sub-interface 5 on physical interface 2.

As another example, referring to FIG. 3b , the sub-interfaces allocated on a pair of physical interfaces between the network device 21 and the network device 22 include sub-interface 1 to sub-interface 4, 4 sub-interfaces in total. Among them, sub-interface 1, sub-interface 2 and physical interface 1 (or physical interface 2) correspond to process 1 to process 3 respectively, sub-interface 1 and sub-interface 2 do not need to reserve resources, and sub-interface 3 and sub-interface 4 are bound to network slices respectively 1 and network slice 2, the reserved resources on sub-interface 3 meet the resource requirements of network slice 1, and the reserved resources on sub-interface 4 meet the resource requirements of network slice 2. In this way, when the traffic carrying network fragment 1 on process 1 is forwarded through network device 22, the traffic first determines physical interface 2 according to the destination address at network device 22, and then, you can view the physical interface 2 bound to network fragment 1. Sub-interface 3, thereby sending traffic to network device 21 through sub-interface 3 on physical interface 2.

As another example, referring to FIG. 3c, the sub-interfaces allocated on a pair of physical interfaces between the network device 21 and the network device 22 include sub-interface 1 and sub-interface 2, with a total of 2 sub-interfaces. Among them, sub-interface 1, sub-interface 2, and physical interface 1 (or physical interface 2) correspond to process 1 to process 3, respectively. As the function of opening a route, the sub-interface 1 and sub-interface 2 do not need to reserve resources, and sub-interface 1 and sub-interface do not need to reserve resources. 2 is also bound to network slice 1 and network slice 2 respectively. The reserved resources on sub-interface 1 meet the resource requirements of network slice 1, and the reserved resources on sub-interface 2 meet the resource requirements of network slice 2. In this way, when the traffic carrying network fragment 1 on process 3 is forwarded through network device 22, the traffic first determines sub-interface 2 according to the destination address at network device 22, and determines that sub-interface 2 corresponds to physical interface 2, and then, you can view the physical interface Sub-interface 1 bound to network slice 1 on physical interface 2, so that traffic is sent to network device 21 through sub-interface 1 on physical interface 2.

It can be seen that in a network scenario in which a pair of network devices jointly runs multiple processes and corresponds to multiple identical network segments, the accurate transmission of packets between the pair of network devices can be realized by configuring fewer sub-interfaces, which solves the problem of the current situation. It is necessary to allocate a corresponding sub-interface to the network shard under each process, and too many sub-interfaces are allocated on a physical interface, which is not only difficult to deploy, manage, and maintain the sub-interfaces, but also because the network shards are bound to Therefore, the allocation of too many sub-interfaces leads to too many resources to be reserved, which greatly reduces the scalability of the physical interface, and the resource demands on the physical interface may exceed the availability of the physical interface. Tolerance issues.

In the embodiment of the present application, a sub-interface (English: subinterface) is a plurality of logical interfaces virtualized from a physical interface (English: interface) through protocols and technologies. The types of sub-interfaces may include: common sub-interfaces, channelized sub-interfaces, and flexible Ethernet (English: Flex Ethernet, FlexE for short) sub-interfaces, wherein the sub-interfaces allocated to processes may be common sub-interfaces, channelized sub-interfaces or FlexE sub-interface, the sub-interface allocated for the network slice can be a channelized sub-interface or a FlexE sub-interface.

In the network scenario shown in Figure 1, for example, in the Internet Protocol radio access network (English: Internet Protocol radio access network, IPRAN) networking, multiple access rings and one aggregation ring share the structure of a pair of network devices , then, ring 1 and ring 2 may be access rings, ring 3 may be an aggregation ring, and the network device (such as network device 11) in the access ring may be, for example, an access device (English: Access node, abbreviation: ACC) , the shared network device (ie, the network device 21 and the network device 22 ) may be an aggregation device (English: Aggregation Gateway, AGG for short). Alternatively, the network scenario shown in Figure 1 can also be a structure in which multiple aggregation rings and a backbone ring share a pair of network devices. Then, Ring 1 and Ring 2 can be aggregation rings, Ring 3 can be a backbone ring, and an access ring can be a The network device (eg, network device 11 ) in the device may be, for example, a convergence device, and the shared network device (ie, network device 21 and network device 22 ) may be core devices (also referred to as backbone devices). It should be noted that, when multiple processes corresponding to multiple rings share a pair of network devices, when there is a fault in the ring, traffic can reach the destination device by bypassing the path between the shared pair of network devices, improving the network performance. Reliability of transmitted traffic.

The network scenario applicable to the embodiments of the present application requires that a pair of network devices are connected through a pair of physical interfaces, the pair of network devices belong to multiple identical network segments, and the pair of network devices run multiple processes. Multiple processes in this embodiment of the present application may correspond one-to-one with multiple ring structures, or may correspond one-to-one with multiple non-ring structures, that is, in the embodiment of the present application, in addition to the network scenario shown in FIG. 1 above, It can also be applied to the network scenario shown in FIG. 4 , including: network device 11 to network device 19 , network device 21 and network device 22 , the network device running process 1 may include network device 11 , network device 17 , network device 21 and network device 22, the network device running process 2 may include network device 12, network device 13, network device 14, network device 21 and network device 22, and the network device running process 3 may include network device 15, network device 16, network Device 18, Network Device 19, Network Device 21, and Network Device 22. Process 1 , process 2 and process 3 share network device 21 and network device 22 , and network device 21 is connected to physical interface 2 of network device 22 through physical interface 1 . In the network scenario shown in FIG. 4 , when there is a network fragmentation requirement, the configuration of sub-interfaces and the processing of packets are the same as those in the network scenario shown in FIG. 1 , and details are not repeated here. Hereinafter, the technical solutions provided by the embodiments of the present application are described by taking the network scenario shown in FIG. 1 as an example.

It should be noted that the network devices in the embodiments of the present application refer to devices such as routers, switches, and firewalls that have a function of forwarding packets.

The specific implementation of a packet processing method in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

FIG. 5 is a signaling flowchart of a packet processing method 100 in an embodiment of the present application. Referring to FIG. 5 , the method 100 is described by taking the interaction process between a first network device and a second network device running in multiple processes and belonging to multiple identical network segments as an example, wherein the first network device passes the target physical The interface is connected to the second network device, the multiple processes include a first process and a second process, the first process and the second process are different processes, and the multiple identical network segments include the first network segment and Second network shard. For example, the first network device may be the network device 21 in FIG. 1 or FIG. 2 , and the second network device may be the network device 22 in FIG. 1 or FIG. 2 .

It should be noted that the multiple processes in the embodiments of the present application are Interior Gateway Protocol (English: Interior Gateway Protocol, IGP for short) processes, for example, may be Intermediate System-to-Intermediate System (English: Intermediate System-to-Intermediate System, Abbreviation: ISIS) process or Open Shortest Path First (English: Open Shortest Path First, Abbreviation: OSPF) process.

During specific implementation, the method 100 may, for example, include the following S101 to S106:

S101, a first network device obtains a first packet, the destination address of the first packet is a first destination address, the first packet includes an identifier of a first network fragment, and the first destination address corresponds to a first process.

The first packet is a packet received by the first network device and to be sent from the first network device to the second network device, and the first packet enters the network running the first process through the first network device and the second network device topology. In order to adapt to the scenario of network fragmentation, the first packet also carries the identifier of the first network fragment, which is used to identify that the first packet corresponds to the first network fragment. Based on this, the first network device can determine the first network fragment. The packet is the traffic corresponding to the first network fragment.

Wherein, if the first destination address is learned through the IGP route in the first process, then the first process may be called the first process corresponding to the first destination address. The network device corresponding to the first destination address (that is, the destination device of the first packet) runs in the first process. For example, the network device corresponding to the first destination address belongs to access ring 1, and access ring 1 corresponds to the first process. It can be expressed that the first destination address corresponds to the first process.

The method 100 can be applied to Multi-Protocol Label Switching (English: Multi-Protocol Label Switching, MPLS for short) networks, Internet Protocol version 4 (English: Internet Protocol version 4, IPv4 for short) networks or Internet Protocol version 6 ( English: Internet Protocol version 6, referred to as: IPv6) network.

As an example, if the method 100 is applied to an IPv6 network, the first packet is an IPv6 packet, and the identifier of the first network fragment can be carried in the hop-by-hop (English: Hop by Hop, referred to as “Hop by Hop”) of the first packet. : HBH) option header or destination address option header (English: Destination Option Header, abbreviation: DOH). For example, the first packet may be as shown in FIG. 6a, and the identifier of the first network fragment may be carried in an IPv6 extension header (eg, an HBH option header) of the first packet. Optionally, the option type (Option Type) field in the HBH option header carrying the identifier of the first network fragment may have a specific value to indicate that the HBH option header carries the first network fragment logo. In addition, the identifier of the first network fragment may be carried in any type length value (English: Type Length Value, TLV for short) field extended in the options Options of the IPv6 extension header of the first packet.

As another example, if the method 100 is applied to an IPv4 network, the first packet is an IPv4 packet, and the identifier of the first network fragment may be carried in the Options field of the first packet, for example, the first packet is an IPv4 packet. The message may be as shown in FIG. 6b, by extending the TLV field in the Options field of the first message, and using the extended TLV field to carry the identifier of the first network fragment.

As another example, if the method 100 is applied to an MPLS network, the first packet is an MPLS packet, and the MPLS label stack of the first packet may include multiple MPLS labels, carrying the identifier of the first network fragment The label is one of multiple MPLS labels. Optionally, the multiple MPLS labels may include an indication label, where the indication label is used to indicate that the next MPLS label of the indication label carries the identifier of the first network segment, and the first packet may be, for example, as shown in FIG. 6c . For example, the label carrying the identifier of the first network segment may be located at the bottom of the MPLS label stack.

S102, the first network device determines the first sub-interface in the target physical interface according to the first destination address and the identifier of the first network fragment.

It should be noted that, before the first network device and the second network device process packet forwarding, the network management or controller may configure the first network device and the second network device to prepare for packet forwarding. The configuration contents include but are not limited to the following three examples:

As a first example, the configuration content may include: configuring the corresponding IP address 1 for the second sub-interface on the target physical interface, and joining the first process; configuring the corresponding IP address 2 for the fourth sub-interface on the target physical interface , and join the second process; configure the corresponding IP address 3 for the fifth sub-interface on the target physical interface, and join the third process; bind the first sub-interface on the target physical interface for the first network fragment, the The reserved resources on a sub-interface can meet the resource requirements of the first network fragment; bind the third sub-interface on the target physical interface to the second network fragment, and the reserved resources on the third sub-interface can meet the requirements of the first network fragment. 2. Resource requirements for network sharding. The route between the first network device and the second network device is achieved through the second sub-interface in the first process, and the route between the first network device and the second network device is realized through the fourth sub-interface in the second process. In the third process, the route between the first network device and the second network device is achieved through the fifth sub-interface. Therefore, the second sub-interface, the fourth sub-interface and the fifth sub-interface do not need to reserve resources.

In this example, the first network device may store: the first process and the second sub-interface, the second process and the fourth sub-interface, and the correspondence between the third process and the fifth sub-interface, the second sub-interface , the fourth sub-interface, and the fifth sub-interface belong to the target physical interface, and the corresponding relationship between the identifier of the first network fragment and the first sub-interface, and the identifier of the second network fragment and the third sub-interface. Wherein, various correspondences may be stored in the form of one or more entries. For example, Table 1 and Table 2 may be stored on the first network device as follows:

Table 1

路由前缀routing prefix	子接口subinterface	主接口main interface
前缀1prefix 1	第二子接口Second sub-interface	目标物理接口target physical interface
前缀2prefix 2	第四子接口Fourth sub-interface	目标物理接口target physical interface
前缀3prefix 3	第五子接口Fifth sub-interface	目标物理接口target physical interface

Table 2

主接口main interface	网络分片的标识Identification of network shards	子接口subinterface
目标物理接口target physical interface	第一网络分片的标识The identifier of the first network shard	第一子接口first sub-interface
目标物理接口target physical interface	第二网络分片的标识Identification of the second network shard	第三子接口third sub-interface

Among them, taking the last line in Table 1 as an example, it indicates that a packet whose destination address matches prefix 3 can be routed to the second network device through the fifth sub-interface, and the fifth sub-interface belongs to the target physical interface; Table 2 The last line is taken as an example, indicating that the outgoing interface is a packet of the target physical interface. If the packet carries the identifier of the second network fragment, the packet is sent to the second network device through the third sub-interface.

For another example, Table 3 may also be stored on the first network device as follows:

table 3

The last row in Table 3 is taken as an example, it indicates that the packet whose destination address matches prefix 3 can be routed to the second network device through the fifth sub-interface. The fifth sub-interface belongs to the target physical interface. If the identifier of a network fragment is carried, the packet is sent to the second network device through the first sub-interface; if it carries the identifier of the second network fragment, the packet is sent to the second network device through the third sub-interface .

In this example, S102 may include: S102a1, the first network device determines a second sub-interface corresponding to the first process for the first packet according to the first destination address, and the second sub-interface belongs to the target physical interface; S102a2, the first The network device determines the corresponding first sub-interface in the target physical interface for the first packet according to the identifier of the first network fragment. Wherein, S102a1 may be that the first network device determines that the first destination address matches the prefix 1 in Table 1 or Table 3, and therefore, determines the second sub-interface for the first packet.

As a second example, the configuration content may include: configuring the corresponding IP address 1 for the target physical interface and joining the first process; configuring the corresponding IP address 2 for the second sub-interface on the target physical interface and joining the second process ; Configure the corresponding IP address 3 for the fourth sub-interface on the target physical interface, and join the third process; Bind the first sub-interface on the target physical interface for the first network fragment, and the preset on the first sub-interface The reserved resources can meet the resource requirements of the first network fragment; bind the third sub-interface on the target physical interface to the second network fragment, and the reserved resources on the third sub-interface can meet the resources of the second network fragment need. Wherein, in the first process, the target physical interface is used to realize the reachability of the route between the first network device and the second network device, and in the second process, the route between the first network device and the second network device is realized through the second sub-interface. , in the third process, the route between the first network device and the second network device is achieved through the fourth sub-interface. Therefore, the target physical interface, the second sub-interface and the fourth sub-interface do not need to reserve resources.

In this example, S102 may include, for example: S102b1, the first network device determines the target physical interface corresponding to the first process for the first packet according to the first destination address; S102b2, the first network device determines according to the identifier of the first network fragment A corresponding first sub-interface is determined in the target physical interface for the first packet.

As a third example, the configuration content may include: configuring the corresponding IP address 1 for the target physical interface and joining the first process; configuring the corresponding IP address 2 for the first sub-interface on the target physical interface and joining the second process ; configure the corresponding IP address 3 for the third sub-interface on the target physical interface, and join the third process; bind the first sub-interface on the target physical interface for the first network fragment, and the preset on the first sub-interface The reserved resources can meet the resource requirements of the first network fragment; bind the third sub-interface on the target physical interface to the second network fragment, and the reserved resources on the third sub-interface can meet the resources of the second network fragment need. Wherein, in the first process, the target physical interface is used to realize the reachability of the route between the first network device and the second network device, and in the second process, the route between the first network device and the second network device is realized through the first sub-interface. , in the third process, the route reachability between the first network device and the second network device is realized through the third sub-interface. Therefore, the target physical interface, the first sub-interface and the third sub-interface do not need to be reached when the route is reachable. Reserve resources.

In this example, S102 may include, for example: S102c1, the first network device determines, according to the first destination address, the target physical interface corresponding to the first process for the first packet; S102c2, the first network device determines according to the identifier of the first network fragment A corresponding first sub-interface is determined in the target physical interface for the first packet.

It should be noted that it is also possible to configure multiple processes run by the first network device and the second network device to be closed loops in a three-layer IGP topology. The path in the other direction reaches the destination device, enabling efficient traffic transmission.

S103, the first network device sends the first packet to the second network device based on the first sub-interface.

In specific implementation, the first network device sends the first packet to the second network device based on the first sub-interface of the target physical interface. Since the reserved resources of the first sub-interface can meet the resource requirements of the first network fragment, therefore, Forwarding the first packet belonging to the first network fragment based on the first sub-interface enables the first packet to be forwarded to the first network fragment of the first process with reasonable bandwidth and other resources.

S104, the first network device obtains a second packet, the destination address of the second packet is the second destination address, the second packet includes the identifier of the first network fragment, and the second packet belongs to the second process.

The second packet is a packet received by the first network device and about to be sent from the first network device to the second network device. The second packet enters the network running the second process through the first network device and the second network device topology. In order to adapt to the scenario of network fragmentation, the second packet also carries the identifier of the first network fragment, which is used to identify that the second packet corresponds to the first network fragment. Based on this, the first network device can determine the second network fragment. The packet is the traffic corresponding to the first network fragment. That is, the second packet and the first packet belong to different processes, but correspond to the same network fragment.

The method 100 may be applicable to MPLS networks, IPv4 networks or IPv6 networks. For the manner in which the second packet carries the identifier of the first network fragment under various network types, reference may be made to the description of the manner in which the first packet carries the identifier of the first network fragment in S101, which will not be repeated here.

S105, the first network device determines the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network fragment.

The pre-obtained configuration content on the first network device and the second network device is as shown in the first example in S102, then, S105 may include, for example: S105a1, the first network device determines, according to the second destination address, for the second packet The fourth sub-interface corresponding to the second process, the fourth sub-interface belongs to the target physical interface; S105a2, the first network device determines the corresponding first sub-interface in the target physical interface for the second packet according to the identifier of the first network fragment interface. Wherein, S105a1 may be that the first network device determines that the second destination address matches the prefix 2 in Table 1 or Table 3, and therefore, determines the fourth sub-interface for the second packet.

The pre-obtained configuration content on the first network device and the second network device is shown in the second example in S102, then, S105 may include, for example: S105b1, the first network device determines for the second packet according to the second destination address The second sub-interface corresponding to the second process, the second sub-interface belongs to the target physical interface; S105b2, the first network device determines the corresponding first sub-interface in the target physical interface for the second packet according to the identifier of the first network fragment interface.

The configuration content pre-obtained on the first network device and the second network device is shown in the third example in S102, then, S105 may include, for example: S105c1, the first network device determines for the second packet according to the second destination address The first sub-interface corresponding to the second process, the first sub-interface belongs to the target physical interface; S105c2, the first network device determines the corresponding first sub-interface in the target physical interface for the second packet according to the identifier of the first network fragment interface.

S106, the first network device sends the second packet to the second network device based on the first sub-interface.

During specific implementation, the first network device sends the second packet to the second network device based on the first sub-interface of the target physical interface. Since the reserved resources of the first sub-interface can meet the resource requirements of the first network fragment, therefore, Forwarding the second packet belonging to the first network fragment based on the first sub-interface enables the second packet to be forwarded to the first network fragment of the second process with reasonable bandwidth and other resources.

It should be noted that the execution of S101~S103 and S104~S106 is not limited in order. You can execute S101~S103 first and then execute S104~S106, or you can execute S104~S106 first and then execute S101~S103, and you can also execute S101~S103 Executed simultaneously with S104 to S106.

In some possible implementations, the method 100 may further include:

S107, the first network device obtains a third packet, the destination address of the third packet is the third destination address, the third packet includes the identifier of the second network fragment, the third destination address corresponds to the third process, and the The plurality of processes also include a third process, which is different from the first process and the second process.

The third packet is a packet received by the first network device and about to be sent from the first network device to the second network device. The third packet enters the network running the third process through the first network device and the second network device topology. In order to adapt to the network fragmentation scenario, the third packet also carries the identifier of the second network fragment, which is used to identify that the third packet corresponds to the second network fragment. Based on this, the first network device can determine the third network fragment. The packet is the traffic corresponding to the second network fragment. That is, the third packet, the second packet, and the first packet belong to different processes, the third packet and the first packet correspond to different network segments, and the third packet and the second packet correspond to different network fragmentation.

The method 100 may be applicable to MPLS networks, IPv4 networks or IPv6 networks. For the manner in which the third packet carries the identifier of the second network fragment under various network types, reference may be made to the description of the manner in which the first packet carries the identifier of the first network fragment in S101, which will not be repeated here.

S108: The first network device determines a third sub-interface in the target physical interface according to the third destination address and the identifier of the second network fragment.

The pre-obtained configuration content on the first network device and the second network device is as shown in the first example in S102, then, S108 may include, for example: S108a1, the first network device determines for the third packet according to the third destination address The fifth sub-interface corresponding to the third process, the fifth sub-interface belongs to the target physical interface; S108a2, the first network device determines the corresponding third sub-interface in the target physical interface for the third packet according to the identifier of the second network fragment interface. Wherein, S108a1 may be that the first network device determines that the third destination address matches the prefix 3 in Table 1 or Table 3, so the fifth sub-interface is determined for the third packet.

The configuration content pre-obtained on the first network device and the second network device is shown in the second example in S102, then, S108 may include, for example: S108b1, the first network device determines for the third packet according to the third destination address The fourth sub-interface corresponding to the third process, the fourth sub-interface belongs to the target physical interface; S108b2, the first network device determines the corresponding third sub-interface in the target physical interface for the third packet according to the identifier of the second network fragment interface.

The configuration content pre-obtained on the first network device and the second network device is shown in the third example in S102, then, S108 may include, for example: S108c1, the first network device determines, according to the third destination address, for the third packet The second sub-interface corresponding to the third process, the second sub-interface belongs to the target physical interface; S108c2, the first network device determines the corresponding third sub-interface in the target physical interface for the third packet according to the identifier of the second network fragment interface.

S109, the first network device sends the third packet to the second network device based on the third sub-interface.

During specific implementation, the first network device sends a third packet to the second network device based on the third sub-interface of the target physical interface. Since the reserved resources of the third sub-interface can meet the resource requirements of the second network fragment, therefore, Forwarding the third packet belonging to the second network fragment based on the third sub-interface enables the third packet to be forwarded to the second network fragment of the third process with reasonable bandwidth and other resources.

It should be noted that the execution of S107-S109, S101-S103 and S104-S106 is not limited in order, and can be executed in any order. For example, S101-S103 can be executed first, then S107-S109 can be executed at the end, or S101 can be executed at the same time. ~S103, S107~S109, and S104~S106.

In the above-mentioned embodiment, the processing process of the first network device receiving the packet to be sent to the second network device is used as an example for description. For the packet received by the second network device and sent to the first network device, the processing process Reference may be made to the relevant descriptions of the above S101 to S109, which will not be repeated here.

It should be noted that, in this embodiment of the present application, the first network device and the second network device run in the first process, the second process, and the third process, and each process corresponds to the first network fragment and the second network fragment as an example. For illustration, in other network scenarios, the first network device and the second network device may also run in m processes (m is an integer greater than or equal to 2), and the first network device and the second network device may belong to n the same network shards (n is an integer greater than or equal to 2).

Taking the first network device and the second network device running in m processes, and the first network device and the second network device belong to the same n network slices as an example, if the current network for each process is In the method of allocating one sub-interface to each fragment, (m*n) sub-interfaces need to be allocated for the physical interface between the first network device and the second network device; (m+n) sub-interfaces need to be allocated for the physical interface between the first network device and the second network device. If m>n, at least (m+n) sub-interfaces need to be allocated for the physical interface between the first network device and the second network device ( m-1) sub-interfaces; if m<n, at least n sub-interfaces need to be allocated for the physical interface between the first network device and the second network device. It can be seen that, by using the method provided by the embodiment of the present application, in the scenario where the first network device and the second network device jointly run in multiple processes and there is a network fragmentation requirement, the number of the first network device and the second network device can be greatly reduced. The number of sub-interfaces needs to be configured between network devices.

It can be seen that, through the method 100, in a scenario where a pair of network devices jointly run multiple processes and these processes have network fragmentation requirements, in the physical interface of the pair of network devices, each network fragment is allocated and bound with a Sub-interface, which allocates sub-interfaces equal to the number of processes for multiple processes at most. The sub-interface corresponding to the network shard reserves resources that can meet the resource requirements of the network shard, and the sub-interface bound to the process is used to get through The route between the pair of network devices does not need to reserve resources. In this way, there is no need to allocate a sub-interface with reserved resources for each network segment under each process, which greatly reduces the number of sub-interfaces to be configured under one physical interface. However, according to the sub-interface configuration solution provided by the embodiment of the present application, whether the first network device in the pair of network devices receives packets running in different processes but corresponding to the same network fragment, or the first network device in the pair of network devices When the device receives packets running in different processes and corresponding to different network fragments, it can determine the sub-interfaces under the physical interface that are bound to the network fragment IDs based on the destination address of the packets and the network fragment IDs. The determined sub-interface sends a packet to the second network device in the pair of network devices, so that in a network scenario in which a pair of network devices jointly runs multiple processes and corresponds to multiple identical network segments, configure less The sub-interface realizes the accurate transmission of packets between the pair of network devices.

Correspondingly, an embodiment of the present application further provides a packet processing apparatus 700, and the apparatus 700 has any function of the network device 21 or network device 22 in FIG. 1 and FIG. 4, or the first network device in FIG. 5. . As shown in Figure 7. The apparatus 700 is applied to a first network device, and the apparatus 700 may include: a first obtaining unit 701, a first determining unit 702, a first sending unit 703, a second obtaining unit 704, a second determining unit 705, and a second sending unit 706.

The first obtaining unit 701 is configured to obtain a first packet, the destination address of the first packet is the first destination address, the first packet includes the identifier of the first network fragment, the first destination address corresponds to the first process. The first obtaining unit 701 may execute S101 shown in FIG. 5 .

The first determining unit 702 is configured to determine the first sub-interface in the target physical interface according to the first destination address and the identifier of the first network fragment. The first determining unit 702 may perform S102 shown in FIG. 5 .

A first sending unit 703, configured to send the first packet to a second network device based on the first sub-interface. The first sending unit 703 may perform S103 shown in FIG. 5 .

A second obtaining unit 704, configured to obtain a second packet, where the destination address of the second packet is the second destination address, the second packet includes the identifier of the first network fragment, the second packet The destination address corresponds to a second process, and the second process is different from the first process. The second obtaining unit 704 may perform S104 shown in FIG. 5 .

A second determining unit 705, configured to determine the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network fragment. The second determining unit 705 may perform S105 shown in FIG. 5 .

A second sending unit 706, configured to send the second packet to the second network device based on the first sub-interface. The second sending unit 706 may perform S106 shown in FIG. 5 .

The first network device (or the packet processing apparatus 700 ) is connected to the second network device through the target physical interface, and the first network device and the second network device belong to multiple identical networks Sharding, the multiple network slices include the first network slice, the first network device and the second network device run multiple processes, the multiple processes include the first process and all the Describe the second process.

In a possible implementation manner, the first determining unit 702 may include: a first determining subunit and a second determining subunit. The first determining subunit is configured to determine, according to the first destination address, a second sub-interface corresponding to the first process for the first packet, where the second sub-interface belongs to the target physical interface ; a second determining subunit, configured to determine the corresponding first subinterface in the target physical interface for the first packet according to the identifier of the first network fragment. The second sub-interface is the same as the first sub-interface, or the second sub-interface is different from the first sub-interface.

In a possible implementation manner, the apparatus 700 may further include: a third obtaining unit, a third determining unit, and a third sending unit. The third obtaining unit is configured to obtain a third packet, the destination address of the third packet is the third destination address, the third packet includes the identifier of the second network fragment, and the third destination The address corresponds to a third process, the plurality of processes include the third process, and the third process is different from the first process and the second process; a third determination unit is used to determine the third process according to the third purpose The address and the identifier of the second network segment determine a third sub-interface in the target physical interface; a third sending unit is configured to send the third sub-interface to the second network device based on the third sub-interface message. The third obtaining unit, the third determining unit and the third sending unit may respectively execute S107 to S109 shown in FIG. 5 .

It should be noted that the above-mentioned units with the same function but different serial numbers in the naming may be a unit capable of implementing this function. For example, the above-mentioned first sending unit 703 and second sending unit 706 may be the same unit with sending function.

It should be noted that the packet processing apparatus 700 shown in FIG. 7 may be the first network device in the embodiment shown in FIG. 5 . Therefore, various specific embodiments and effects of the apparatus 700 can be found in The related introduction of the method 100 corresponding to FIG. 5 is not repeated in this embodiment.

Referring to FIG. 8 , an embodiment of the present application provides a network device 800 . The network device 800 may be the network device in any of the foregoing embodiments, for example, may be the network device 21 or the network device 22 in FIG. 1 or FIG. 4 , or may be the first network device in the embodiment shown in FIG. 5 , The network device 800 may implement the functions of the first network device, the network device 21 or the network device 22 in the above embodiments. The network device 800 includes at least one processor 801 , a bus system 802 , a memory 803 and at least one transceiver 804 .

The network device 800 is an apparatus with a hardware structure, and can be used to implement the functional modules in the packet processing apparatus 700 shown in FIG. 7 . For example, those skilled in the art can think that the first determining unit 702 and the second determining unit 705 in the message processing apparatus 700 shown in FIG. 7 can be implemented by calling the code in the memory 803 by the at least one processor 801, and FIG. 7 The first obtaining unit 701 , the first sending unit 703 , the second obtaining unit 704 and the second sending unit 706 in the shown packet processing apparatus 700 may be implemented by the transceiver 804 .

Optionally, the network device 800 may also be used to implement the functions of the network device in any of the foregoing embodiments.

Optionally, the above-mentioned processor 801 may be a general-purpose central processing unit (central processing unit, CPU), network processor (network processor, NP), microprocessor, application-specific integrated circuit (application-specific integrated circuit, ASIC) , or one or more integrated circuits used to control the execution of the program of this application.

The bus system 802 described above may include a path to transfer information between the above described components.

The above transceiver 804 is used to communicate with other devices or communication networks.

The above-mentioned memory 803 can be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types of storage devices that can store information and instructions. Types of dynamic storage devices, which can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical storage, CD-ROM storage (including compact discs, laser discs, compact discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being accessed by Any other medium accessed by the computer, but not limited to this. The memory can exist independently and be connected to the processor through a bus. The memory can also be integrated with the processor.

Wherein, the memory 803 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 801 . The processor 801 is used for executing the application program code stored in the memory 803, so as to realize the functions in the method of the present patent.

In a specific implementation, as an embodiment, the processor 801 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 8 .

In a specific implementation, as an embodiment, the network device 800 may include multiple processors, for example, the processor 801 and the processor 807 in FIG. 8 . Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

FIG. 9 is a schematic structural diagram of another network device 900 provided by an embodiment of the present application. The network device 900 may be, for example, the network device 21 or the network device 22 in the embodiment shown in FIG. 1 , or may also be the implementation shown in FIG. 4 . The network device 21 or the network device 22 in the example, or may also be the first network device in the embodiment shown in FIG. 5 .

The network device 900 includes: a main control board 910 and an interface board 930 .

The main control board 910 is also called the main processing unit (main processing unit, MPU) or the route processing card (route processor card). The main control board 910 controls and manages each component in the network device 900, including route calculation, Equipment maintenance, protocol processing functions. The main control board 910 includes: a central processing unit 911 and a memory 912 .

The interface board 930 is also referred to as a line processing unit (LPU), a line card or a service board. The interface board 930 is used to provide various service interfaces and realize data packet forwarding. The service interface includes, but is not limited to, an Ethernet interface, a POS (Packet over SONET/SDH) interface, etc. The Ethernet interface is, for example, a flexible Ethernet service interface (Flexible Ethernet Clients, FlexE Clients). The interface board 930 includes: a central processing unit 931 , a network processor 932 , a forwarding table entry storage 934 and a physical interface card (ph8sical interface card, PIC) 933 .

The central processing unit 931 on the interface board 930 is used to control and manage the interface board 930 and communicate with the central processing unit 911 on the main control board 910 .

The network processor 932 is used to implement packet forwarding processing. The network processor 932 may be in the form of a forwarding chip. Specifically, the processing of the uplink packet includes: processing of the incoming interface of the packet, and searching of the forwarding table; processing of the downlink packet: searching of the forwarding table, and so on.

The physical interface card 933 is used to realize the interconnection function of the physical layer, the original traffic enters the interface board 930 through this, and the processed packets are sent from the physical interface card 933 . The physical interface card 933 includes at least one physical interface, and the physical interface is also called a physical port. The physical interface card 933 corresponds to the FlexE physical interface in the system architecture. The physical interface card 933 is also called a daughter card, which can be installed on the interface board 930 and is responsible for converting the photoelectric signal into a message, checking the validity of the message and forwarding it to the network processor 932 for processing. In some embodiments, the central processor 931 of the interface board 930 can also perform the functions of the network processor 932 , such as implementing software forwarding based on a general-purpose CPU, so that the network processor 932 is not required in the physical interface card 933 .

Optionally, the network device 900 includes multiple interface boards. For example, the network device 900 further includes an interface board 940 . The interface board 940 includes a central processing unit 941 , a network processor 942 , a forwarding table entry storage 944 and a physical interface card 943 .

Optionally, the network device 900 further includes a switch fabric board 920 . The switch fabric 920 may also be referred to as a switch fabric unit (switch fabric unit, SFU). When the network device has multiple interface boards 930, the switching network board 920 is used to complete data exchange between the interface boards. For example, the interface board 930 and the interface board 940 can communicate through the switch fabric board 920 .

The main control board 910 and the interface board 930 are coupled. E.g. The main control board 910 , the interface board 930 , the interface board 940 , and the switching network board 920 are connected to the system backplane through a system bus to achieve intercommunication. In a possible implementation manner, an inter-process communication (inter-process communication, IPC) channel is established between the main control board 910 and the interface board 930, and the main control board 910 and the interface board 930 communicate through the IPC channel.

Logically, the network device 900 includes a control plane and a forwarding plane, the control plane includes the main control board 910 and the central processing unit 931, and the forwarding plane includes various components that perform forwarding, such as the forwarding entry storage 934, the physical interface card 933 and the network processing device 932. The control plane performs functions such as routers, generating forwarding tables, processing signaling and protocol packets, and configuring and maintaining the status of devices. The control plane delivers the generated forwarding tables to the forwarding plane. On the forwarding plane, the network processor 932 based on the The delivered forwarding table forwards the packets received by the physical interface card 933 by looking up the table. The forwarding table issued by the control plane may be stored in the forwarding table entry storage 934 . In some embodiments, the control plane and forwarding plane may be completely separate and not on the same device.

The network device 900 is configured as the first network device, the network processor 932 can trigger the physical interface card 933 to obtain the first packet, the destination address of the first packet is the first destination address, and the first packet includes the first network The identifier of the fragment, the first destination address corresponds to the first process, and the first packet is sent to the second network device based on the first sub-interface; the second packet is obtained, and the destination address of the second packet is the first packet. Two destination addresses, the second packet includes the identifier of the first network fragment, and the second destination address corresponds to a second process. The second process is different from the first process. Based on the first sub-interface, the second network Send the second message. The central processing unit 911 may determine the first sub-interface in the target physical interface according to the first destination address and the identifier of the first network fragment; determine the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network fragment. The first sub-interface, and.

It should be understood that the first obtaining unit 701 , the first sending unit 703 , the second obtaining unit 704 , the second sending unit 706 , etc. in the packet processing apparatus 700 , and the transceiver 804 in the network device 800 may be equivalent to the network device 900 The physical interface card 933 or the physical interface card 943 in the device; the first determining unit 702 and the second determining unit 705 in the message processing apparatus 700 , and the processor 801 in the network device 800 may be equivalent to the central processor 911 or central processing unit 931.

It should be understood that the operations on the interface board 940 in the embodiments of the present application are the same as the operations on the interface board 930, and for brevity, details are not repeated here. It should be understood that the network device 900 in this embodiment may correspond to the apparatus or network device for establishing a BGP neighbor in each of the above method embodiments, and the main control board 910 , the interface board 930 and/or the interface board 940 in the network device 900 may The functions and/or various steps implemented in the packet processing apparatus 700 or the network device 800 in each of the foregoing method embodiments are implemented, and are not repeated here for brevity.

It should be understood that there may be one or more main control boards, and when there are more than one main control board, it may include an active main control board and a backup main control board. There may be one or more interface boards. The stronger the data processing capability of the network device, the more interface boards are provided. There can also be one or more physical interface cards on the interface board. There may be no switch fabric boards, or there may be one or more boards. When there are multiple boards, load sharing and redundancy backup can be implemented together. Under the centralized forwarding architecture, the network device does not need to switch the network board, and the interface board is responsible for the processing function of the service data of the entire system. Under the distributed forwarding architecture, a network device may have at least one switching network board, and the switching network board realizes data exchange between multiple interface boards, providing large-capacity data exchange and processing capabilities. Therefore, the data access and processing capabilities of network devices in a distributed architecture are greater than those in a centralized architecture. Optionally, the form of the network device can also be that there is only one board, that is, there is no switching network board, and the functions of the interface board and the main control board are integrated on this board. The central processing unit on the board can be combined into a central processing unit on this board to perform the functions of the two superimposed, the data exchange and processing capacity of this form of equipment is low (for example, low-end switches or routers and other networks. equipment). The specific architecture used depends on the specific networking deployment scenario.

In some possible embodiments, each of the above network devices or network devices may be implemented as virtualized devices. For example, the virtualization device may be a virtual machine (English: Virtual Machine, VM) running a program for sending a message, and the virtual machine is deployed on a hardware device (for example, a physical server). A virtual machine refers to a complete computer system with complete hardware system functions simulated by software and running in a completely isolated environment. A virtual machine can be configured as each of the network devices in Figure 1. For example, each network device or network device may be implemented based on a general physical server combined with a Network Functions Virtualization (NFV) technology. Each network device or network device is a virtual host, a virtual router or a virtual switch. By reading this application, those skilled in the art can virtualize each network device or network device having the above functions on a general physical server in combination with the NFV technology, which will not be repeated here.

It should be understood that the network devices in the above-mentioned various product forms respectively have the network devices or any functions of the network devices in the foregoing method embodiments, and details are not described herein again.

The embodiment of the present application also provides a chip, including a processor and an interface circuit, the interface circuit is used to receive instructions and transmit them to the processor; the processor, for example, may be a specific type of the message processing device in the embodiment of the present application The implementation form can be used to execute the above packet processing method. The processor is coupled to a memory, and the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the chip system enables the method in any of the foregoing method embodiments.

Optionally, the number of processors in the chip system may be one or more. The processor can be implemented by hardware or by software. When implemented in hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented in software, the processor may be a general-purpose processor implemented by reading software codes stored in memory.

Optionally, there may also be one or more memories in the chip system. The memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application. Exemplarily, the memory can be a non-transitory processor, such as a read-only memory ROM, which can be integrated with the processor on the same chip, or can be provided on different chips. The setting method of the processor is not particularly limited.

Exemplarily, the system-on-chip may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC), It can also be a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller). controller unit, MCU), it can also be a programmable logic device (PLD) or other integrated chips.

In addition, an embodiment of the present application further provides a network system 1000, see FIG. 10 . The network system 1000 may include a first network device 1001 and a second network device 1002 . The first network device 1001 is configured to perform all operations performed by the first network device in the method 100 shown in FIG. 5 ; the second network device 1002 is configured to perform all operations performed by the second network device in the method 100 shown in FIG. 5 . operate.

It should be noted that, for the relevant description of the network system 1000 shown in FIG. 10 , reference may be made to the relevant introduction of the method 100 corresponding to FIG. 5 , and details are not repeated in this embodiment.

In addition, an embodiment of the present application also provides a computer-readable storage medium, where program codes or instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the computer can execute any of the above embodiments shown in FIG. 5 . A method under an implementation.

In addition, the embodiments of the present application also provide a computer program product, which, when running on a computer, enables the computer to execute the method of any one of the foregoing method 100 implementations.

The "first" in the names such as "first packet" and "first network device" mentioned in the embodiments of the present application are only used for name identification, and do not represent the first in order. The same rule applies to "second" etc.

It should be understood that "determining B based on A" mentioned in the embodiments of the present application does not mean that B is only determined according to A, and B can also be determined according to A and/or other information.

From the description of the above embodiments, those skilled in the art can clearly understand that all or part of the steps in the methods of the above embodiments can be implemented by means of software plus a general hardware platform. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, and the computer software product can be stored in a storage medium, such as read-only memory (English: read-only memory, ROM)/RAM, magnetic disk, An optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network communication device such as a router) to execute the methods described in various embodiments or some parts of the embodiments of the present application.

Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiments and device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for related parts. The device and system embodiments described above are only illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the present application, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

A message processing method, comprising:

The first network device obtains the first packet, the destination address of the first packet is the first destination address, the first packet includes the identifier of the first network fragment, and the first destination address corresponds to the first process;

The first network device determines the first sub-interface in the target physical interface according to the first destination address and the identifier of the first network fragment;

sending, by the first network device, the first packet to the second network device based on the first sub-interface;

The first network device obtains a second packet, the destination address of the second packet is the second destination address, the second packet includes the identifier of the first network fragment, the second destination address Corresponding to a second process, the second process is different from the first process;

The first network device determines the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network fragment;

sending, by the first network device, the second packet to the second network device based on the first sub-interface;

The first network device is connected to the second network device through the target physical interface, the first network device and the second network device belong to multiple identical network slices, and the multiple network The fragmentation includes the first network fragmentation, and the first network device and the second network device run a plurality of processes, the plurality of processes including the first process and the second process.
The method according to claim 1, wherein the reserved resources on the first sub-interface meet the resource requirements of the first network segment.
The method according to claim 1 or 2, wherein the first network device determines the first sub-interface in the target physical interface according to the first destination address and the identifier of the first network segment, comprising: :

determining, by the first network device, a second sub-interface corresponding to the first process for the first packet according to the first destination address, where the second sub-interface belongs to the target physical interface;

The first network device determines the corresponding first sub-interface in the target physical interface for the first packet according to the identifier of the first network fragment.
The method according to claim 3, wherein the second sub-interface is the same as the first sub-interface, or the second sub-interface and the first sub-interface are different.
The method according to any one of claims 1-4, wherein the method further comprises:

The first network device obtains a third packet, the destination address of the third packet is the third destination address, the third packet includes the identifier of the second network fragment, and the third destination address corresponds to the third destination address. Three processes, the plurality of processes include the third process, and the third process is different from the first process and the second process;

The first network device determines the third sub-interface in the target physical interface according to the third destination address and the identifier of the second network fragment;

The first network device sends the third packet to the second network device based on the third sub-interface.
The method according to any one of claims 1-5, wherein the multiple processes are Interior Gateway Protocol (IGP) processes.
The method according to any one of claims 1-6, wherein the method is applicable to a multi-protocol label switching MPLS network, a fourth version of the Internet Protocol IPv4 network or a sixth version of the Internet Protocol IPv6 network.
A message processing apparatus, wherein the apparatus is applied to a first network device, comprising:

The first obtaining unit is configured to obtain a first packet, the destination address of the first packet is the first destination address, the first packet includes the identifier of the first network fragment, and the first destination address corresponds to the first destination address. process;

a first determining unit, configured to determine the first sub-interface in the target physical interface according to the first destination address and the identifier of the first network fragment;

a first sending unit, configured to send the first packet to a second network device based on the first sub-interface;

a second obtaining unit, configured to obtain a second packet, the destination address of the second packet is the second destination address, the second packet includes the identifier of the first network fragment, the second destination The address corresponds to a second process, and the second process is different from the first process;

a second determining unit, configured to determine the first sub-interface in the target physical interface according to the second destination address and the identifier of the first network fragment;

a second sending unit, configured to send the second packet to the second network device based on the first sub-interface;

The first network device is connected to the second network device through the target physical interface, the first network device and the second network device belong to multiple identical network slices, and the multiple network The fragmentation includes the first network fragmentation, and the first network device and the second network device run a plurality of processes, the plurality of processes including the first process and the second process.
The apparatus according to claim 8, wherein the reserved resources on the first sub-interface meet resource requirements of the first network slice.
The device according to claim 8 or 9, wherein the first determining unit comprises:

a first determining subunit, configured to determine a second subinterface corresponding to the first process for the first packet according to the first destination address, where the second subinterface belongs to the target physical interface;

A second determining subunit, configured to determine the corresponding first sub-interface in the target physical interface for the first packet according to the identifier of the first network fragment.
The apparatus according to claim 10, wherein the second sub-interface is the same as the first sub-interface, or the second sub-interface and the first sub-interface are different.
The device according to any one of claims 8-11, wherein the device further comprises:

A third obtaining unit, configured to obtain a third packet, where the destination address of the third packet is the third destination address, the third packet includes the identifier of the second network fragment, and the third destination address corresponds to a third process, the plurality of processes include the third process, and the third process is different from the first process and the second process;

a third determining unit, configured to determine the third sub-interface in the target physical interface according to the third destination address and the identifier of the second network fragment;

A third sending unit, configured to send the third packet to the second network device based on the third sub-interface.
The apparatus according to any one of claims 8-12, wherein the multiple processes are Interior Gateway Protocol (IGP) processes.
The apparatus according to any one of claims 8-13, wherein the apparatus is suitable for a multi-protocol label switching MPLS network, an Internet Protocol version 4 IPv4 network or an Internet Protocol version 6 IPv6 network.
A network system, characterized in that the network system includes: a first network device and a second network device;

Wherein, the first network device is configured to execute the method of any one of claims 1-7;

The second network device is configured to receive a packet sent by the first network device based on the determined sub-interface.
A computer-readable storage medium, characterized in that, program codes or instructions are stored in the computer-readable storage medium, and when the program codes or instructions are executed on a computer, the computer is made to execute the above claims 1- The method of any one of 7.