WO2024040884A1

WO2024040884A1 - Service processing method, apparatus and system

Info

Publication number: WO2024040884A1
Application number: PCT/CN2023/076359
Authority: WO
Inventors: 彭书萍; 陈大鹏; 夏阳; 李振斌
Original assignee: 华为技术有限公司
Priority date: 2022-08-26
Filing date: 2023-02-16
Publication date: 2024-02-29

Abstract

A service processing method, apparatus and system, relating to the technical field of networks. The method comprises: a network device receives a packet comprising an option field, the option field comprising a first service sub-field, a second service sub-field, a first length sub-field and a second length sub-field, the first service sub-field corresponding to a first service, the second service sub-field corresponding to a second service, the first service being different from the second service, the first length sub-field being used for indicating the length of the first service sub-field, and the second length sub-field being used for indicating the length of the second service sub-field; and the network device processes the packet according to the first service sub-field. In the present application, the same option field of the same packet can carry service information of at least two different services, so that the packet overhead can be reduced.

Description

Business processing methods, devices and systems

This application requires a Chinese patent application with an application date of August 26, 2022, an application number of 202211032270.1, and an application name of "A (IPv6+) multi-service integrated encapsulation method", and the application date is November 21, 2022 Priority is granted to the Chinese patent application with the application number 202211456091.0 and the application title "Business Processing Method, Device and System". The entire contents of these two patent applications are incorporated into this application by reference.

Technical field

The present application relates to the field of network technology, and in particular to a business processing method, device and system.

Background technique

In current network technology, multiple services can be carried out for Internet Protocol version 6 (IPv6) messages. For example, these services include flow detection services, slice services, deterministic network (DetNet) services, application-aware networking (APN) services, and service function chaining (SFC) Business etc.

Currently, the IPv6 extension header of an IPv6 message is usually extended with different option (option) fields for each of the above services to carry the service information of the corresponding service. For example, when an IPv6 packet needs to support both the slicing service and the SFC service, the IPv6 extension header of the IPv6 packet needs to extend two option fields for the slicing service and the SFC service, and add the two option fields to the slicing service and the accompanying flow header. The corresponding option fields of each detection service carry the service information of the corresponding service.

However, according to the protocol, the option field should include a type (type) subfield, a length (length) subfield and other fixed contents used to describe the option field. When the option field is expanded for each service, each expanded option field includes these fixed contents, resulting in a larger IPv6 extension header length, larger IPv6 extension header overhead, and larger message overhead.

Contents of the invention

This application provides a business processing method, device and system. The technical solution of this application is as follows:

In a first aspect, a service processing method is provided. The method includes: a network device receives a message including an option field, where the option field includes a first service subfield, a second service subfield, a first length subfield and a second Length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the The second length subfield is used to indicate the length of the second service subfield; the network device processes the message according to the first service subfield. The first service subfield is used to carry the service information of the first service, and the second service subfield is used to carry the service information of the second service.

In the technical solution provided by this application, since an option field of the message includes a first service subfield and a second service subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, and the first service subfield corresponds to the second service. The service is different from the second service. Therefore, the one option field can carry the service information of the first service and the service information of the second service. That is, the one option field can carry the service information of at least two different services. In other words, the same option field in the same message can carry the business information of at least two different services. Therefore, there is no need to expand the option field separately for each service. Compared with the current solution of separately extending the option field for each service, the technical solution provided by this application can save the overhead caused by some fixed content in the option field and help reduce message overhead. In addition, in the current solution to separately expand the option field for each service, each option field usually also includes some optional subfields for alignment or future expansion. These optional subfields can also easily lead to higher message overhead. , Compared with the current solution of separately extending option fields for each service, the technical solution provided by this application can also save the overhead caused by some optional sub-fields and reduce message overhead.

In addition, after a network device obtains (for example, receives or generates) a packet, it usually needs to process the packet, such as forwarding the packet or performing some business processing on the packet. In the current solution of separately extending the option field for each service, the length of the message is relatively large, resulting in high complexity of network equipment processing the message and low forwarding performance of the network equipment. In the technical solution provided by this application, the same option field of the same message can carry the business information of at least two different services, thus reducing the length of the message and helping to simplify the complexity of network equipment processing messages. Improve the forwarding performance of network equipment.

In addition, in the technical solution provided by this application, the option field also includes a first length subfield and a second length subfield. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield Used to indicate the length of the second service subfield. Therefore, when the network device processes a message including this option field, the network device can determine the length of the first service subfield based on the first length subfield. According to the length carried by the first service subfield process the message according to the service information or skip the first service subfield, and the network device can determine the length of the second service subfield according to the second length subfield to process the message according to the service information carried by the second service subfield. Or skip the second business subfield. Since the option field includes a length subfield used to indicate the length of each service subfield (such as the first service subfield and the second service subfield), the lengths of different service subfields may be equal or unequal, The length of each service subfield can be flexibly set according to actual needs, and will not affect the network device's processing of messages containing this option field.

Optionally, the option field also includes a flag subfield, which is used to indicate that the option field includes a first service subfield and a second service subfield.

The technical solution provided by this application is to set a flag subfield in the option field and use the flag subfield to indicate that the option field includes a first service subfield and a second service subfield, so that the network device can learn the option based on the flag subfield. The field includes a first service subfield corresponding to the first service and a second service subfield corresponding to the second service.

Optionally, the flag subfield includes a first service flag bit and a second service flag bit. The first service flag bit is used to indicate that the option field includes the first service subfield, and the second service flag bit is used to indicate that the option field includes the first service subfield. This option field includes the second service subfield.

The technical solution provided by this application facilitates the network device to learn that the option field includes the first service corresponding to the first service based on the first service flag bit by setting the first service flag bit and the second service flag bit in the flag subfield. subfield, and, according to the second service flag bit, it is known that the option field includes a second service subfield corresponding to the second service.

Optionally, the first length subfield corresponds to the first service flag bit, and the second length subfield corresponds to the second service flag bit.

In the technical solution provided by this application, the first service flag bit is used to indicate that the option field includes the first service subfield, the second service flag bit is used to indicate that the option field includes the second service subfield, and the first service flag bit is used to indicate that the option field includes the second service subfield. The length subfield corresponds to the first service flag bit, and the second length subfield corresponds to the second service flag bit. Therefore, when the network device processes a message including the option field, the network device can determine the option based on the first service flag bit. The field includes the first service subfield, and then determines the length of the first service subfield according to the first length subfield, and determines that the option field includes the second service subfield according to the second service flag bit, and further determines according to the second length The subfield determines the length of the second service subfield.

Optionally, the first service flag bit and the second service flag bit are arranged in order, the first length subfield and the second length subfield are arranged in order, and the order of the first length subfield and the second length subfield is the same as that of the first length subfield and the second length subfield. The arrangement sequence of the first service flag bit and the second service flag bit corresponds to each other.

In the technical solution provided by this application, since the arrangement order of the first length subfield and the second length subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit, the network device can be configured according to the first service flag bit. and the order of the second service flag bits to determine the first length subfield and the second length subfield.

Optionally, the first service flag bit and the second service flag bit are arranged in order, the first service subfield and the second service subfield are arranged in order, and the order of the first service subfield and the second service subfield is the same as that of the first service subfield. The arrangement sequence of the first service flag bit and the second service flag bit corresponds to each other.

In the technical solution provided by this application, since the arrangement order of the first service subfield and the second service subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit, the network device can, according to the first service flag bit, and the order of the second service flag bits to determine the first service subfield and the second service subfield.

Optionally, the flag subfield includes m service flag bits, the m service flag bits correspond to m services one-to-one, the m services are different from each other, and each service flag bit in the m service flag bits Used to indicate whether the option field includes the service subfield of the service corresponding to each service flag bit. The m service flag bits include the first service flag bit and the second service flag bit. The m services include the first service. And the second business, m≥2, and m is an integer. For example, the flag subfield corresponds to m services through bit mapping. The value in each service flag bit is 0 or 1. "1" is used to indicate that the option field includes the service corresponding to each service flag bit. The service subfield, "0" is used to indicate that the option field does not include the service subfield of the service corresponding to each service flag bit.

The technical solution provided by this application, by setting a flag subfield in the option field, and setting the m service flag bits of the flag subfield to correspond to m services one-to-one, can facilitate the network device to respond to each of the m service flag bits. Each service flag bit determines whether the option field includes the service subfield of the service corresponding to each service flag bit, thereby facilitating the network device to learn which service subfields are included in the option field.

Optionally, the option field includes k service length subfields, and the k service length subfields correspond to k service flag bits among the m service flag bits, 1≤k≤m, and k is an integer. When any one of the k service flag bits indicates that the option field includes the service subfield of the service corresponding to the any service flag bit, the service length subfield corresponding to the any service flag bit is used for Indicates the length of the service subfield, the k service length subfields include a first length subfield and a second length subfield, and the k service flag bits include a first service flag bit and a second service flag bit. That is, k service length subfields are set in the option field to correspond to k services, and each service length subfield is used to indicate the length of the service subfield of the corresponding service. For example, the k service flag bits indicate that the option field includes k service subfields, and the k service length subfields are used to indicate the lengths of the k service subfields one by one.

The technical solution provided by this application is to set k service length subfields in the option field to correspond to k services, and use each service length subfield to indicate the length of the service subfield of the corresponding service, which facilitates the network equipment to adjust the k services according to the Each service length subfield in the length subfield determines the length of the service subfield corresponding to each service length subfield. This setting method allows the length of each service subfield to be set according to actual needs, which can meet actual needs.

Optionally, k=m, the k service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, the first service subfield, and the third service flag bit. The second service subfield and the third service subfield are arranged in order. The third service flag bit and the third service subfield both correspond to the third service. The first service, the second service and the third service subfield are arranged in sequence. The services are different from each other, and the m services include the third service; the k service length subfields also include a third length subfield, and the third length subfield is used to indicate the length of the third service subfield.

In the technical solution provided by this application, the third service subfield may be the last service subfield in the option field. For example, the m service flag bits are arranged in order, and the third service subfield is one of the m service flag bits. The service subfield indicated by the last service flag bit. When k=m, the number of service length subfields in the option field is equal to the number of service flag bits included in the flag subfield in the option field. Each service subfield in the option field corresponds to a service length subfield. , each service length subfield is used to indicate the length of the corresponding service subfield. When the network device processes a message including this option field, the network device can determine the length of the corresponding service subfield based on each service length subfield. When When the network device does not support the service corresponding to the service subfield, the network device can directly skip the service subfield to simplify the processing logic of the network device.

Optionally, k=m-1, the m service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, and the first service subfield , the second service subfield and the third service subfield are arranged in order, the third service flag bit and the third service subfield both correspond to the third service, the first service, the second service and the third service are different from each other, the m Each service includes the third service; the k service flag bits do not include the third service flag bit, and the length of the third service subfield is based on the length of the option field, the length of the first service subfield and the length of the second service subfield. The length is determined. For example, the length of the third service subfield is determined based on the length of the option field and the length of the subfields in the option field other than the third service subfield (such as the length of the first service subfield and the second service subfield). .

In the technical solution provided by this application, the third service subfield may be the last service subfield in the option field. For example, the m service flag bits are arranged in order, and the third service subfield is one of the m service flag bits. The service subfield indicated by the last service flag bit. When k=m-1, the number of service length subfields in the option field is one less than the number of service flag bits included in the flag subfield in the option field. Except for the third service subfield (also That is, each service subfield except the last service subfield) corresponds to a service length subfield, and the service length subfield corresponding to each service subfield except the third service subfield is used to indicate each service subfield. The length of the field. When the network device processes a message including this option field: for each service subfield except the third service subfield, the network device determines each service subfield based on the service length subfield corresponding to each service subfield. length, when the network device does not support the service corresponding to each service subfield, the network device can directly skip each service subfield, simplifying the processing logic of the network device; for the third service subfield (that is, the last Service subfield), the network device determines the third service subfield based on the length of the option field and the length of the subfields in the option field except the third service subfield. When the network device does not support the third service, the network device You can directly skip the third service subfield to simplify the processing logic of the network device.

Optionally, the k service length subfields are adjacent, and the flag subfield is adjacent to the k service length subfields. For example, the length of the flag subfield is 8 bits, and the total length of the k service length subfields is 24 bits. The flag subfield and the k service length subfields form a 4-byte field, and the flag subfield is The first byte field in the 4-byte field and the k service length subfields are the remaining 3 byte fields in the 4-byte field.

Optionally, the option field also includes a flow indication subfield, which is used to indicate the data flow to which the message belongs. The network device processes the message according to the first service subfield, including: the network device processes the message according to the first service subfield. The flow indication subfield and the first service subfield process the message. The flow indication subfield is used to carry flow indication information, and the flow indication information is used to indicate the data flow to which the message belongs. The flow indication information may be a data flow identifier. For example, the application-aware network All or part of the (application-aware networking, APN) identification (ID) is used as the data flow identification.

The technical solution provided by this application can carry out multiple services for the same packet of the same data flow. The services carried out for the packets of different data flows can be the same or different, and the business information of the same business carried out for different data flows can be carried out. different. For example, the slice service, the flow detection service and the deterministic network (DetNet) service are carried out for the same packet of the first data flow, and the slice service, Application-aware networking (APN) business and service function chaining (SFC) business, the business information of the slice service carried out for the packets of the first data flow and the packets carried out for the second data flow The business information of the slice service can be different (for example, the business information of the slice service carried out for the packets of the first data flow is slice ID 1, and the business information of the slice service carried out for the packets of the second data flow is slice ID 2) . Based on this, the network device has different processing behaviors for the option fields included in the packets of different data flows. When the network device processes the message including the option field, it also refers to the local configuration information. This application sets a flow indicator subfield in the option field to indicate the data flow to which the message including the option field belongs, so that the network device can according to The flow indication subfield determines the data flow to which the message belongs, and then processes the message according to the local configuration information associated with both the data flow and the service information carried by the option field. Such a setting method can enable the network device to Achieve differentiated processing of different data streams.

Optionally, the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order. The flag subfield also includes a flow flag bit, and the flow flag bit is used to indicate that the option field includes the Stream indication subfield. That is, a flag bit in the flag subfield is used to indicate whether the option field includes the flow indication subfield.

Optionally, the flow indication subfield, the flag subfield, the first service subfield and the second service subfield are arranged in order. That is, the option field includes the flow indication subfield, but does not use the flag bit in the flag subfield to indicate the flow indication subfield.

Optionally, the first length subfield is in the first service subfield, and the second length subfield is in the second service subfield. That is, the first length subfield is part of the first service subfield, the second length subfield is part of the second service subfield, the first length subfield is also called the first length space, and the second length subfield is also called the first length space. The field is also called the second length space.

Optionally, the first service subfield also includes a first type space, and the first type space is used to indicate the first service; the second service subfield also includes a second type space, and the second type space is used to indicate the second service. That is, the first type space in the first service subfield is used to indicate that the first service subfield corresponds to the first service, and the second type space in the second service subfield is used to indicate that the second service subfield corresponds to the second service.

Optionally, the first service subfield also includes a first data space, and the first data space is used to carry the service information of the first service; the second service subfield also includes a second data space, and the second data space is used to indicate the first service. 2. Business information of the business.

Optionally, the option field also includes a flow indication subfield, which is used to indicate the data flow to which the message belongs. The network device processes the message according to the first service subfield, including: the network device processes the message according to the first service subfield. The flow indication subfield and the first service subfield process the message. The flow indication subfield is used to carry flow indication information, and the flow indication information is used to indicate the data flow to which the message belongs. The flow indication information may be a flow identifier.

Optionally, the flow indication subfield, the first service subfield and the second service subfield are arranged in order.

Optionally, the length of the first service subfield is 4×p bytes, the length of the second service subfield is 4×q bytes, and p and q are both positive integers. p and q may be equal or unequal.

Optionally, the message is an Internet protocol version 6 (IPv6) message, and the message The packet includes an IPv6 extension header, and the IPv6 extension header includes the option field.

The technical solution provided by this application carries the business information of at least two different services in the same option field of the IPv6 extension header of the same message. Compared with the solution of separately extending the option field for each service, it can save options. The overhead caused by some fixed content in the field helps to reduce the length of the IPv6 extension header and reduce the overhead of the IPv6 extension header.

Optionally, the IPv6 extension header includes any one of a hop by hop header (HBH) and a destination options header (Destination options header, DOH). In this way, the present application helps reduce the length of HBH or DOH.

Optionally, the first service includes slice service, flow detection service, application-aware network (APN) service, deterministic network (DetNet) service, service function chaining (service function chaining) , any one of the SFC) service and the path segment service; or, the second service includes any one of the slicing service, the flow-following detection service, the APN service, the DetNet service, the SFC service and the path segment service.

Optionally, the network device supports the first service and the second service, and the method further includes: the network device processes the message according to the second service subfield. For example, the network device processes the message according to the flow indication subfield and the second service subfield.

Optionally, the network device supports the first service but does not support the second service. The method further includes: the network device skips the second service subfield. For example, the network device skips the second service subfield according to the second length subfield.

In a second aspect, a service processing method is provided. The method includes: the network device generates a message including an option field, where the option field includes a first service subfield, a second service subfield, a first length subfield and a second Length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the The second length subfield is used to indicate the length of the second service subfield; the network device sends the message. The first service subfield is used to carry the service information of the first service, and the second service subfield is used to carry the service information of the second service.

Optionally, the flag subfield includes a first service flag bit and a second service flag bit, the first service flag bit is used to indicate that the option field includes the first service subfield, and the second service flag bit is used to indicate This option field includes the second service subfield.

Optionally, the flag subfield includes m service flag bits, the m service flag bits correspond to m services one-to-one, the m services are different from each other, and each service flag bit in the m service flag bits Used to indicate whether the option field includes the service subfield of the service corresponding to each service flag bit. The m service flag bits include the first service flag bit and the second service flag bit. The m services include the first service. And the second business, m≥2, and m is an integer.

Optionally, the option field includes k service length subfields, and the k service length subfields correspond to k service flag bits among the m service flag bits, 1≤k≤m, and k is an integer. When any one of the k service flag bits indicates that the option field includes the service subfield of the service corresponding to the any service flag bit, the service length subfield corresponding to the any service flag bit is used for Indicates the length of the service subfield, the k service length subfields include a first length subfield and a second length subfield, and the k service flag bits include a first service flag bit and a second service flag bit.

Optionally, k=m, the k service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, the first service subfield, and the third service flag bit. The second service subfield and the third service subfield are arranged in sequence. The third service flag bit and the third service subfield both correspond to the third service. The first service, the second service and the third service are different from each other. The m services Including the third service; the k service length subfields also include a third length subfield, and the third length subfield is used to indicate the length of the third service subfield.

Optionally, k=m-1, the m service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, and the first service subfield , the second business subfield and the third business subfield are arranged in order, the third business flag bit and the third business subfield both correspond to the third business, the first business, the second business and the third business are different from each other, the m Each service includes the third service; the k service flag bits do not include the third service flag bit, and the length of the third service subfield is based on the length of the option field, the length of the first service subfield and the length of the second service subfield. The length is determined.

Optionally, the k service length subfields are adjacent, and the flag subfield is adjacent to the k service length subfields.

Optionally, the option field also includes a flow indication subfield, which is used to indicate the data flow to which the message belongs. The network device processes the message according to the first service subfield, including: the network device processes the message according to the first service subfield. The flow indication subfield and the first service subfield process the message.

Optionally, the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order. The flag subfield also includes a flow flag bit, and the flow flag bit is used to indicate that the option field includes the Stream indication subfield.

Optionally, the flow indication subfield, the flag subfield, the first service subfield and the second service subfield are arranged in order.

Optionally, the first length subfield is in the first service subfield, and the second length subfield is in the second service subfield.

Optionally, the first service subfield also includes a first type space, and the first type space is used to indicate the first service; the second service subfield also includes a second type space, and the second type space is used to indicate the second service.

Optionally, the length of the first service subfield is 4×p bytes, the length of the second service subfield is 4×q bytes, and p and q are both positive integers.

Optionally, the packet is an IPv6 packet, the packet includes an IPv6 extension header, and the IPv6 extension header includes the option field.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the first service includes any one of the slicing service, the flow-following detection service, the APN service, the DetNet service, the SFC service and the path segment service; or the second service includes the slicing service, the following-flow detection service, the APN service, Any one of DetNet service, SFC service and path segment service.

Optionally, the method further includes: the network device receiving instruction information sent by the controller, the instruction information being used to instruct the network device to generate a message including the option field; and the network device generating a message including the option field. The message includes: the network device generates a message including the option field according to the instruction information.

In a third aspect, a service processing method is provided, which method includes: the controller sends instruction information to a head node, the instruction information is used to instruct the head node to generate a message including an option field, where the option field includes a first service sub- field, the second service subfield, the first length subfield and the second length subfield. The first service subfield corresponds to the first service, and the second service subfield corresponds to the second service. The first service is different from the second service. A length subfield is used to indicate the length of the first service subfield, and a second length subfield is used to indicate the length of the second service subfield.

Optionally, the option field also includes a flow indication subfield, which is used to indicate the data flow to which the message belongs.

Optionally, the option field also includes a flow indication subfield, which is used to indicate the data flow to which the message belongs. The flow indication subfield, the first service subfield, and the second service subfield are sequentially arrangement.

Optionally, the instruction information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, where the IPv6 extension header includes the option field.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

In a fourth aspect, a service processing method is provided, which method includes: a head node receiving instruction information sent by a controller, the instruction information being used to instruct the head node to generate a message including an option field, the option field including the first service subfield, second service subfield, first length subfield and second length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield; the head node generates a message including the option field according to the indication information.

Optionally, the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order. The flag subfield also includes a flow flag bit, which is used to indicate that the option field includes the flow indication subfield.

Optionally, the instruction information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, the IPv6 extension header includes the option field, and the head node generates a message including the option field according to the instruction information. , including: the head node generates an IPv6 message including the IPv6 extension header according to the indication information.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

In a fifth aspect, a service processing device is provided, which is applied to network equipment. The service processing device includes a transceiver module and a processing module. The transceiver module is used to perform the above-mentioned first aspect or any optional method of the first aspect. The processing module is configured to perform operations other than the sending and receiving operations in the method provided by the above-mentioned first aspect or any optional manner of the first aspect. The transceiver operation may be a receive and/or send operation.

The transceiver module is configured to receive a message including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield, and a second length subfield. The first service subfield The field corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the first length subfield is used to indicate the length of the first service subfield. , the second length subfield is used to indicate the length of the second service subfield;

The processing module is configured to process the message according to the first service subfield.

Optionally, the option field further includes a flag subfield, and the flag subfield is used to indicate that the option field includes the first service subfield and the second service subfield.

Optionally, the flag subfield includes a first service flag bit and a second service flag bit. The first service flag bit is used to indicate that the option field includes the first service subfield, and the second service flag bit is used to indicate that the option field includes the first service subfield. The service flag bit is used to indicate that the option field includes the second service subfield.

Optionally, the first service flag bit and the second service flag bit are arranged in order, the first length subfield and the second length subfield are arranged in order, the first length subfield and The arrangement order of the second length subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit.

Optionally, the first service flag bit and the second service flag bit are arranged in order, the first service subfield and the second service subfield are arranged in order, the first service subfield and The arrangement order of the second service subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit.

Optionally, the flag subfield includes m service flag bits, the m service flag bits correspond to m services one-to-one, the m services are different from each other, and each of the m service flag bits The service flag bit is used to indicate whether the option field includes the service subfield of the service corresponding to each service flag bit. The m service flag bits include the first service flag bit and the second service flag bit. , the m services include the first service and the second service, m≥2, and m is an integer.

Optionally, the option field includes k service length subfields, and the k service length subfields correspond to k service flag bits among the m service flag bits, 1≤k≤m, and k is an integer. When any one of the k service flag bits indicates that the option field includes the service subfield of the service corresponding to any one of the service flag bits, the service corresponding to any one of the service flag bits The length subfield is used to indicate the length of the service subfield, the k service length subfields include the first length subfield and the second length subfield, and the k service flag bits include the A service flag bit and the second service flag bit.

Optionally, k=m, the k service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, and the first service flag bit The subfield, the second service subfield and the third service subfield are arranged in order, the third service flag bit and the third service subfield both correspond to the third service, the first service, the The second service and the third service are different from each other, and the m services include the third service;

The k service length subfields also include a third length subfield, and the third length subfield is used to indicate the length of the third service subfield.

Optionally, k=m-1, the m service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, and the third service flag bit is used to indicate that the option field also includes a third service subfield. A service subfield, the second service subfield and the third service subfield are arranged in order, the third service flag bit and the third service subfield both correspond to the third service, the first service, The second service and the third service are different from each other, and the m services include the third service;

The k service flag bits do not include the third service flag bit, and the length of the third service subfield is based on the length of the option field, the length of the first service subfield and the second service subfield. The length of the field is determined.

Optionally, the option field also includes a flow indication subfield, the flow indication subfield is used to indicate the data flow to which the message belongs, and the processing module is configured to determine the data flow according to the flow indication subfield and the The first service subfield processes the message.

Optionally, the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order. The flag subfield also includes a flow flag bit. The flow flag bit is used to indicate that the options field includes the flow indication subfield.

Optionally, the first service subfield also includes a first type space, and the first type space is used to indicate the first A service; the second service subfield also includes a second type space, and the second type space is used to indicate the second service.

Optionally, the first service subfield also includes a first data space, and the first data space is used to carry the service information of the first service; the second service subfield also includes a second data space, The second data space is used to indicate service information of the second service.

Optionally, the message is an IPv6 message, the message includes an IPv6 extension header, and the IPv6 extension header includes the option field.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the first service includes any one of the slicing service, the following detection service, the APN service, the DetNet service, the SFC service and the path segment service; or the second service includes the slicing service and the following detection service. , APN service, DetNet service, SFC service and path segment service.

Optionally, the network device supports the first service and the second service, and the processing module is further configured to process the message according to the second service subfield.

Optionally, the network device supports the first service but does not support the second service, and the processing module is further configured to skip the second service subfield.

A sixth aspect provides a service processing device, which is applied to network equipment. The service processing device includes a transceiver module and a processing module. The transceiver module is used to perform the above-mentioned second aspect or any optional method of the second aspect. The processing module is configured to perform operations other than the sending and receiving operations in the method provided by the above-mentioned second aspect or any optional manner of the second aspect. The transceiver operation may be a receive and/or send operation.

The processing module is configured to generate a message including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield and a second length subfield. The first service subfield The field corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the first length subfield is used to indicate the length of the first service subfield. , the second length subfield is used to indicate the length of the second service subfield;

The transceiver module is used to send the message.

Optionally, the first service flag bit and the second service flag bit are arranged in order, and the first length subfield and The second length subfields are arranged in order, and the arrangement order of the first length subfield and the second length subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit.

Optionally, the k service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, and the first service subfield, the The second service subfield and the third service subfield are arranged in order, the third service flag bit and the third service subfield both correspond to the third service, the first service, the second service and The third services are different from each other, and the m services include the third services;

Optionally, the m service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, and the first service subfield, the The second service subfield and the third service subfield are arranged in order, the third service flag bit and the third service subfield both correspond to the third service, the first service, the second service and The third services are different from each other, and the m services include the third services;

Optionally, the first length subfield is in the first service subfield, and the second length subfield is in the first service subfield. In the second business subfield.

Optionally, the first service subfield also includes a first type space, and the first type space is used to indicate the first service; the second service subfield also includes a second type space, and the first type space is used to indicate the first service. The second type space is used to indicate the second service.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the transceiver module is also configured to receive instruction information sent by the controller, where the instruction information is used to instruct the network device to generate a message including the option field;

The processing module is configured to generate the message including the option field according to the indication information.

In a seventh aspect, a business processing device is provided, applied to a controller. The business processing device includes a transceiver module and a processing module. The transceiver module is used to perform the above-mentioned third aspect or any optional method of the third aspect. For the transceiver operation in the method provided, the processing module is configured to perform operations other than the transceiver operation in the method provided by the above-mentioned third aspect or any optional manner of the third aspect. The transceiver operation may be a receive and/or send operation.

The transceiver module is configured to send indication information to the head node. The indication information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield, a second service subfield, A first length subfield and a second length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, so The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield.

Optionally, the flag subfield includes a first service flag bit and a second service flag bit. The first service flag bit is used to indicate that the option field includes the first service subfield, and the second service flag bit is used to indicate that the option field includes the first service subfield. The business flag bit is used to indicate the option The second service subfield is included in the field.

Optionally, the option field also includes a flow indication subfield, and the flow indication subfield is used to indicate the data flow to which the message belongs.

Optionally, the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order. The flag subfield also includes a flow flag bit. The flow flag bits used to indicate that the options field includes The flow indication subfield.

Optionally, the option field also includes a flow indication subfield, the flow indication subfield is used to indicate the data flow to which the message belongs, the flow indication subfield, the first service subfield and the The second business subfields are arranged in sequence.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

In an eighth aspect, a service processing device is provided, applied to a head node. The service processing device includes a transceiver module and a processing module. The transceiver module is used to perform the above-mentioned fourth aspect or any optional method of the fourth aspect. The processing module is configured to perform operations other than the sending and receiving operations in the method provided by the above-mentioned fourth aspect or any optional manner of the fourth aspect. The transceiver operation may be a receive and/or send operation.

The transceiver module is configured to receive instruction information sent by the controller. The instruction information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield and a second service subfield. , a first length subfield and a second length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield;

The processing module is configured to generate a message including the option field according to the indication information.

Optionally, the instruction information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, where the IPv6 extension header includes the option field, and the processing module is configured to generate an IPv6 message including: The IPv6 extension header of the IPv6 message.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

A ninth aspect provides a business processing device, including a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the business processing device performs the above-mentioned first aspect Or the business processing method provided by any optional method in the first aspect.

In a tenth aspect, a business processing device is provided, including a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the business processing device performs the above-mentioned second aspect Or the business processing method provided by any optional method in the second aspect.

In an eleventh aspect, a business processing device is provided, including: a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the business processing device executes the above-mentioned The business processing methods provided by the three aspects.

In a twelfth aspect, a business processing device is provided, including: a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the business processing device executes the above-mentioned The business processing methods provided by the four aspects.

In a thirteenth aspect, a business processing system is provided, including a first network device and a second network device;

The first network device is configured to generate a message including an option field and send the message to the second network device. The option field includes a first service subfield, a second service subfield, a first length subfield and a second Length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the The second length subfield is used to indicate the length of the second service subfield;

The second network device is used to receive the message and process the message according to the first service subfield.

Optionally, the service processing system also includes a third network device, and the second network device is also used to send a message to the third network device. Send the message; the third network device is used to receive the message and process the message according to the second service subfield.

Optionally, the service processing system further includes a controller configured to send instruction information to the first network device, where the instruction information is used to instruct the first network device to generate a message including the option field; correspondingly, the first network device The device is used to generate a message including the option field based on the indication information.

Optionally, the first network device is the head node on the forwarding path of the message, the second network device is the intermediate node on the forwarding path, and the third network device is the intermediate node or tail node on the forwarding path.

Optionally, the service processing device provided by the fifth aspect or any optional implementation of the fifth aspect may serve as an intermediate node or tail node on the forwarding path of the message. The sixth aspect or the sixth aspect may The service processing device provided by any optional implementation of the seventh aspect can be used as the head node on the forwarding path of the message, and the service processing device provided by any optional implementation of the seventh aspect or the seventh aspect can be used as the controller. .

Optionally, the service processing device provided by the above-mentioned seventh aspect or any optional implementation of the seventh aspect can be used as a controller, and the service processing device provided by the above-mentioned eighth aspect or any optional implementation of the eighth aspect. Devices can serve as head nodes.

Optionally, the service processing device provided in the ninth aspect can be used as an intermediate node or tail node on the forwarding path of the message, and the service processing device provided in the tenth aspect can be used as the head node on the forwarding path of the message. , the business processing device provided in the eleventh aspect above can serve as a controller.

Optionally, the service processing device provided in the eleventh aspect may serve as a controller, and the service processing device provided in the twelfth aspect may serve as a head node on the forwarding path of the message.

In a fourteenth aspect, a computer-readable storage medium is provided. A computer program is stored in the computer-readable storage medium. When the computer program is executed, the above-mentioned first aspect or any optional method of the first aspect is implemented. The provided business processing method either implements the business processing method provided by the above-mentioned second aspect or any optional method of the second aspect, or implements the business processing method provided by the above-mentioned third aspect or any optional method of the third aspect. The provided business processing method, or implement the provided business processing method as provided in the above fourth aspect or any optional manner of the fourth aspect.

A fifteenth aspect provides a computer program product. The computer program product includes a program or code. When the program or code is executed, the business provided by the above-mentioned first aspect or any optional method of the first aspect is implemented. The processing method, or implements the business processing method provided by the above second aspect or any optional method of the second aspect, or implements the service processing method provided by the above third aspect or any optional method of the third aspect. Business processing method, or implement the business processing method provided as provided in the above fourth aspect or any optional method of the fourth aspect.

A sixteenth aspect provides a chip. The chip includes programmable logic circuits and/or program instructions. When the chip is run, it implements the business processing provided by the above-mentioned first aspect or any optional method of the first aspect. method, or implement the business processing method as provided in the above second aspect or any optional manner of the second aspect, or implement the provided services as provided in the above third aspect or any optional manner of the third aspect. processing method, or implement the provided business processing method as provided in the above fourth aspect or any optional manner of the fourth aspect.

In a seventeenth aspect, a data structure is provided, the data structure includes an option field, the option field includes a first service subfield, a second service subfield, a first length subfield and a second length subfield, so The first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the first length subfield is used to indicate the first The length of the service subfield, and the second length subfield is used to indicate the length of the second service subfield.

In an eighteenth aspect, a business processing method is provided, and the method includes:

The network device receives a message including an option field. The option field includes a first service subfield, a second service subfield and a flow indication subfield. The first service subfield corresponds to the first service, and the second service subfield The field corresponds to the second service, the first service is different from the second service, and the flow indication subfield is used to indicate the data flow to which the message belongs;

The network device processes the message according to the flow indication subfield and the first service subfield.

Optionally, the option field also includes a first length subfield and a second length subfield. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the first service subfield. To indicate the length of the second service subfield.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the network device supports the first service and the second service, and the method further includes: the network device processes the packet according to the flow indication subfield and the second service subfield. arts.

Optionally, the network device supports the first service but does not support the second service, and the method further includes: the network device skips the second service subfield.

In a nineteenth aspect, a business processing method is provided, and the method includes:

The network device generates a message including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield, and a second length subfield. The first service subfield corresponds to the first service. , the second service subfield corresponds to a second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the second The length subfield is used to indicate the length of the second service subfield;

The network device sends the message.

Optionally, the first service flag bit and the second service flag bit are arranged in order, and the first service subfield and The second service subfields are arranged in sequence, and the arrangement order of the first service subfield and the second service subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit.

Optionally, the first service subfield also includes a first data space, and the first data space is used to carry the first Service information of a service; the second service subfield also includes a second data space, and the second data space is used to indicate the service information of the second service.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the network device receives instruction information sent by the controller, and the instruction information is used to instruct the network device to generate a message including the option field; accordingly, the network device generates a message including the option field. The message includes: the network device generates the message including the option field according to the indication information.

In a twentieth aspect, a business processing method is provided, and the method includes:

The controller sends instruction information to the head node, where the instruction information is used to instruct the head node to generate a message including an option field, where the option field includes a first service subfield, a second service subfield and a flow indication subfield, The first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the flow indication subfield is used to indicate the message The data stream it belongs to.

Optionally, the first service flag bit and the second service flag bit are arranged in order, the first service subfield and the second service subfield are arranged in order, the first service subfield and The arrangement order of the second business subfield is consistent with the The first service flag bit and the second service flag bit are arranged in a corresponding order.

Optionally, the first service subfield also includes a first data space, and the first data space is used to carry the service information of the first service; the second service subfield also includes a second data space, The second data space is used to indicate The service information of the second service.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

In a twenty-first aspect, a business processing method is provided, and the method includes:

The head node receives the instruction information sent by the controller. The instruction information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield, a second service subfield and a flow indication subfield. , the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the flow indication subfield is used to indicate the report The data stream to which the document belongs;

The head node generates a message including the option field according to the indication information.

Optionally, the option field includes k service length subfields, and the k service length subfields are consistent with the m The k service flag bits in the service flag bits correspond one to one, 1≤k≤m, and k is an integer. Any one of the k service flag bits indicates that the option field includes any of the When the service flag bit corresponds to the service subfield of the service, the service length subfield corresponding to any of the service flag bits is used to indicate the length of the service subfield, and the k service length subfields include the first length subfield. field and the second length subfield, the k service flag bits include the first service flag bit and the second service flag bit.

Optionally, the instruction information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, where the IPv6 extension header includes the option field, and the head node generates an IPv6 message including the option field according to the instruction information. The message of the field includes: the head node generates an IPv6 message including the IPv6 extension header according to the indication information.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

A twenty-second aspect provides a service processing device applied to network equipment. The service processing device includes a transceiver module and a processing module. The transceiver module is used to perform any one of the eighteenth aspect or the eighteenth aspect. For the transceiver operation in the method provided in the optional manner, the processing module is configured to perform operations other than the transceiver operation in the method provided by the eighteenth aspect or any optional method of the eighteenth aspect. The transceiver operation may be a receive and/or send operation.

The transceiver module is configured to receive a message including an option field. The option field includes a first service subfield, a second service subfield and a flow indication subfield. The first service subfield corresponds to the first service, so The second service subfield corresponds to a second service, the first service is different from the second service, and the flow indication subfield is used to indicate the data flow to which the message belongs;

The processing module is configured to process the message according to the flow indication subfield and the first service subfield.

Optionally, the option field includes k service length subfields, and the k service length subfields correspond to k service flag bits among the m service flag bits, 1≤k≤m, and k is an integer. When any one of the k service flag bits indicates that the option field includes the service subfield of the service corresponding to any one of the service flag bits, the service corresponding to any one of the service flag bits The length subfield is used to indicate the length of the service subfield, and the k services The length subfield includes the first length subfield and the second length subfield, and the k service flag bits include the first service flag bit and the second service flag bit.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the network device supports the first service and the second service, and the processing module is further configured to process the message according to the flow indication subfield and the second service subfield.

In a twenty-third aspect, a service processing device is provided, which is applied to network equipment. The service processing device includes a transceiver module and a processing module. The transceiver module is used to perform any one of the above-mentioned nineteenth or nineteenth aspects. For the transceiver operation in the method provided in the optional manner, the processing module is configured to perform operations other than the transceiver operation in the method provided by the above-mentioned nineteenth aspect or any optional manner of the nineteenth aspect. The transceiver operation may be a receive and/or send operation.

The processing module is configured to generate a message including an option field. The option field includes a first service subfield, a second service subfield and a flow indication subfield. The first service subfield corresponds to the first service, so The second service subfield corresponds to a second service, the first service is different from the second service, and the flow indication subfield is used to indicate the data flow to which the message belongs;

The transceiver module is used to send the message.

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the transceiver module is also configured to receive instruction information sent by the controller, where the instruction information is used to instruct the network device to generate a message including the option field; correspondingly, the processing module uses Generate the message including the option field according to the instruction information.

In the twenty-fourth aspect, a business processing device is provided, applied to a controller. The business processing device includes a transceiver module and a processing module. The transceiver module is used to perform any one of the twentieth aspect or the twentieth aspect. For the transceiver operation in the method provided in the optional manner, the processing module is configured to perform operations other than the transceiver operation in the method provided by the above-mentioned twentieth aspect or any optional manner of the twentieth aspect. The transceiver operation may be a receive and/or send operation.

The transceiver module is configured to send indication information to the head node. The indication information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield, a second service subfield and Flow indication subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the flow indication subfield is used to Indicates the data flow to which the packet belongs.

Optionally, the option field includes k service length subfields, and the k service length subfields correspond to k service flag bits among the m service flag bits, 1≤k≤m, and k is an integer, in the k service flag bits When any one of the service flag bits indicates that the option field includes a service subfield of the service corresponding to any of the service flag bits, the service length subfield corresponding to any of the service flag bits is used to indicate the length of the service subfield. Length, the k service length subfields include the first length subfield and the second length subfield, and the k service flag bits include the first service flag bit and the second service flag bit .

Optionally, the IPv6 extension header includes any one of HBH and DOH.

Optionally, the first service includes slicing service, flow detection service, APN service, DetNet service, SFC service Any one of the service and the path segment service; or the second service includes any one of the slicing service, the flow detection service, the APN service, the DetNet service, the SFC service and the path segment service.

In the twenty-fifth aspect, a business processing device is provided, which is applied to the head node. The business processing device includes a transceiver module and a processing module. The transceiver module is used to perform the above-mentioned twenty-first aspect or the twenty-first aspect. The processing module is used to perform the transceiver operation in the method provided by any optional method, the processing module is used to perform the transceiver operation in the method provided by any optional method of the twenty-first aspect or the twenty-first aspect, except for the transceiver operation. operation. Transceiver operations may be receive and/or send operations.

The transceiver module is configured to receive instruction information sent by the controller. The instruction information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield and a second service subfield. and flow indication subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the flow indication subfield is To indicate the data flow to which the message belongs;

Optionally, the IPv6 extension header includes any one of HBH and DOH.

In a twenty-sixth aspect, a business processing device is provided, including a memory and a processor; the memory is used to store calculations. a computer program; the processor is configured to execute the computer program stored in the memory so that the business processing device executes the business processing method provided in the eighteenth aspect or any optional manner of the eighteenth aspect.

In a twenty-seventh aspect, a business processing device is provided, including a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the business processing device executes the above-mentioned first step. The business processing method provided by the 19th aspect or any optional method of the 19th aspect.

In the twenty-eighth aspect, a business processing device is provided, including: a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the business processing device performs the above The business processing methods provided in the twentieth aspect.

In a twenty-ninth aspect, a business processing device is provided, including: a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the business processing device executes the above The business processing method provided in the twenty-first aspect.

In a thirtieth aspect, a business processing system is provided, including a first network device and a second network device;

The first network device is configured to generate a message including an option field and send the message to the second network device. The option field includes a first service subfield, a second service subfield and a flow indication subfield. The first service The subfield corresponds to the first service, and the second service subfield corresponds to the second service. The first service is different from the second service. The flow indication subfield is used to indicate the data flow to which the message belongs;

The second network device is configured to receive the message and process the message according to the flow indication subfield and the first service subfield.

Optionally, the service processing system also includes a third network device. The second network device is also used to send the message to the third network device; the third network device is used to receive the message and use the flow indication subfield to and the second business subfield to process the message.

Optionally, the service processing device provided by the above-mentioned aspect 22 or any optional implementation of the twenty-second aspect can be used as an intermediate node or tail node on the forwarding path of the message. The above-mentioned twenty-third aspect Or the service processing device provided by any optional implementation of the twenty-third aspect can be used as the head node on the forwarding path of the message. The above-mentioned twenty-fourth aspect or any optional implementation of the twenty-fourth aspect The provided service processing device can serve as a controller.

Optionally, the service processing device provided by the above-mentioned twenty-fourth aspect or any optional implementation of the twenty-fourth aspect can be used as a controller, and the above-mentioned twenty-fifth aspect or any one of the twenty-fifth aspect can be used as a controller. The service processing device provided by the selected implementation mode can serve as the head node.

Optionally, the service processing device provided in the twenty-sixth aspect can be used as an intermediate node or tail node on the forwarding path of the message, and the service processing device provided in the twenty-seventh aspect can be used as the forwarding path of the message. On the head node, the service processing device provided in the twenty-eighth aspect above can serve as a controller.

Optionally, the service processing device provided in the twenty-eighth aspect may serve as a controller, and the service processing device provided in the twenty-ninth aspect may serve as a head node on the forwarding path of the message.

In a thirty-first aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores computer A computer program that, when executed, implements the business processing method provided by the eighteenth aspect or any optional method of the eighteenth aspect, or implements any of the nineteenth aspect or the nineteenth aspect. A business processing method provided by an optional method, or implementing the business processing method provided by the above-mentioned twentieth aspect or any optional method of the twentieth aspect, or implementing the above-mentioned twenty-first aspect or The business processing method provided by any optional method of aspect 21.

A thirty-second aspect provides a computer program product. The computer program product includes a program or code. When the program or code is executed, it implements the above-mentioned eighteenth aspect or any optional method of the eighteenth aspect. Provided business processing method, or implement the business processing method provided by the above-mentioned nineteenth aspect or any optional method of the nineteenth aspect, or implement the above-mentioned twentieth aspect or any optional method of the twentieth aspect The provided business processing method provided by the method, or the provided business processing method provided by the above-mentioned twenty-first aspect or any optional method of the twenty-first aspect.

In a thirty-third aspect, a chip is provided. The chip includes a programmable logic circuit and/or program instructions. When the chip is run, the chip implements the above-mentioned eighteenth aspect or any of the optional methods provided in the eighteenth aspect. The business processing method, or the business processing method provided by the nineteenth aspect or any optional method of the nineteenth aspect, or the business processing method provided by the twentieth aspect or any optional method of the twentieth aspect The provided business processing method is provided, or the provided business processing method is implemented as provided in the twenty-first aspect or any optional manner of the twenty-first aspect.

In a thirty-fourth aspect, a data structure is provided. The data structure includes an option field. The option field includes a first service subfield, a second service subfield, and a flow indication subfield. The first service subfield Corresponding to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the flow indication subfield is used to indicate the data flow to which the message belongs.

Optionally, the flag subfield includes m service flag bits, the m service flag bits correspond to m services one-to-one, the m services are different from each other, and each of the m service flag bits The service flag bit is used to indicate whether the option field includes the service subfield of the service corresponding to each service flag bit, and the m service flag bits include the A service flag bit and the second service flag bit, the m services include the first service and the second service, m≥2, and m is an integer.

For the technical effects of the above-mentioned second aspect to the thirty-fourth aspect, reference can be made to the first aspect and will not be described again here.

Description of drawings

Figure 1 is a schematic structural diagram of an option field;

Figure 2 is a schematic structural diagram of another option field;

Figure 3 is a schematic structural diagram of the option data subfield in the option field shown in Figure 2;

Figure 4 is another structural schematic diagram of the option data subfield in the option field shown in Figure 2;

Figure 5 is another structural schematic diagram of the option data subfield in the option field shown in Figure 2;

Figure 6 is another structural schematic diagram of the option data subfield in the option field shown in Figure 2;

Figure 7 is a schematic structural diagram of yet another option field;

Figure 8 is a schematic structural diagram of another option field;

Figure 9 is a schematic structural diagram of another option field;

Figure 10 is a schematic structural diagram of another option field;

Figure 11 is a schematic structural diagram of another option field;

Figure 12 is a schematic structural diagram of the context header subfield in the option field shown in Figure 11;

Figure 13 is a schematic diagram of an application scenario provided by the embodiment of the present application;

Figure 14 is a schematic diagram of another application scenario provided by the embodiment of the present application;

Figure 15 is a flow chart of a business processing method provided by an embodiment of the present application;

Figure 16 is a schematic structural diagram of an option field provided by an embodiment of the present application;

Figure 17 is a schematic structural diagram of another option field provided by an embodiment of the present application;

Figure 18 is a schematic structural diagram of yet another option field provided by an embodiment of the present application;

Figure 19 is a flow chart of another business processing method provided by an embodiment of the present application;

Figure 20 is a flow chart of yet another business processing method provided by an embodiment of the present application;

Figure 21 is a flow chart of yet another business processing method provided by an embodiment of the present application;

Figure 22 is a flow chart of yet another business processing method provided by an embodiment of the present application;

Figure 23 is a schematic diagram of a business processing method provided by an embodiment of the present application;

Figure 24 is a schematic diagram of a service processing device provided by an embodiment of the present application;

Figure 25 is a schematic diagram of another service processing device provided by an embodiment of the present application;

Figure 26 is a schematic diagram of a business processing system provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In the current development of network technology, multiple services can be carried out for IPv6 messages. For example, these services include flow detection services, slicing services, DetNet services, APN services, and SFC services. Currently, different option fields are usually extended for each of the above services in the IPv6 extension header of the IPv6 message to carry the service information of the corresponding service, so that IPv6 packets can support each of the above services. Among them, the option fields for different business extensions are independent of each other.

It should be noted that in this application, the flow-following detection service refers to the flow-following detection-related services. Slicing services refer to network slicing related services. DetNet services refer to deterministic network-related services. APN services refer to application-aware network-related services. SFC business refers to the business related to service function links. Among them, the in-situ flow detection service can include in-situ flow information telemetry (IFIT) service or in-band operations management and maintenance (in-suitoam operations administration and maintenance, IOAM) service, etc. In different network scenarios, the names of the flow detection service, slicing service, DetNet service, APN service and SFC service may be different. For example, in some network scenarios, slicing services are also called virtual transport network (VTN) services.

The service information of the above services and the option fields currently carrying the service information of the above services are introduced below.

For example, the business information of the IFIT service includes flow identification (flow ID), packet loss measurement (packet loss measurement) identification, delay measurement (packet delay measurement) identification, detection type indication information, detection cycle, etc. Flow identification can also be called flow label, flow monitoring identification (flow monitoring identification, FMonID), etc., indicating the service flow to be measured. The detection type indication information is used to indicate the detection type, which can be an end-to-end (E2E) detection type or a hop-by-hop detection type. The current option fields for IFIT business expansion are shown in Figure 1. This option field includes flow instruction indicator (FII), flow instruction header (flow instruction header, FIH) and flow instruction extension header (flow instruction extension header, FIEH). FIEH is an optional part of the IFIT header. FII includes a type (type) subfield, a length (length) subfield and a reserved (reserved) subfield. The type subfield is used to indicate this IFIT header. The length subfield is used to indicate the total length of FIH and FIEH. FIH includes flow identification subfield, L subfield, D subfield, reserved (reserved, R) subfield and header type indicator (header type indicator, HTI) subfield. The flow identification subfield is used to carry the flow identification. The L subfield is used to carry the packet loss measurement identifier. The D subfield is used to carry the delay measurement identifier. The HTI subfield is used to indicate the type of FIH. The value of the HTI subfield is 0, 1, 2, 3 or 4. 0 is a reserved value. Both 1 and 3 indicate that the FIH is E2E FIH, and the value of the HTI subfield is 1. FIEH is invalid. FIEH is valid when the value of the HTI subfield is 3. 2 and 4 indicate that the FIH is hop-by-hop FIH. FIEH is invalid when the value of the HTI subfield is 2. FIEH is valid when the value of the HTI subfield is 4. FIEH includes flow identification extension (flowID Ext) subfield, V subfield, P subfield, destination internet protocol (destination internet protocol, DIP) mask (mask) subfield, source internet protocol (source internet protocol, SIP) mask subfield fields and reserved subfields. The flow identification extension subfield is used to carry the extended flow identification. The V subfield is used to carry the reverse flow learning enable flag. The P subfield indicates the detection period. The value of the P subfield is 0, 1, 2, 3, 4 or 5. 0 and 1 are both reserved values. 2 indicates that the detection period is 10 seconds, 3 indicates that the detection period is 30 seconds, and 4 It means the detection period is 60 seconds, 5 means the detection period is 300 seconds. The DIP mask subfield is used to carry the DIP mask length for automatic reverse flow learning. The SIP mask subfield is used to carry the SIP mask length for automatic reverse flow learning.

For example, the service information of the IOAM service includes a flow identifier, indicating the flow to be measured. The current option fields for IOAM business expansion are shown in Figure 2. The option field includes a type subfield, a length subfield, a reserved subfield, an IOAM type subfield and an option data subfield. The type subfield is used to indicate the type of this option field. The length subfield is used to indicate the length of the option data subfield. The IOAM type subfield is used to indicate the type of the option data subfield. The length of the option data subfield is variable, and the option data subfield is used to carry IOAM data. IOAM data may include flow identifiers, message identifiers, IOAM data of IOAM nodes (referring to nodes that support IOAM) on the forwarding path of the message, etc. The IOAM data of any IOAM node can include the node identifier of the IOAM node, the ingress port of the message entering the IOAM node, the egress port of the message output from the IOAM node, the entry timestamp of the message entering the IOAM node, and the message From the IOAM The egress timestamp output by the node, the transmission delay of the message at the IOAM node, etc.

Among them, the type of option data subfield can include IOAM pre-allocated trace option-type (IOAM pre-allocated trace option-type), IOAM incremental trace option type (IOAM incremental trace option-type), IOAM transmission verification option type (IOAM proof of transit option-type, IOAM POT option-type), IOAM end-to-end option type (IOAM edge-to-edge option-type, IOAM E2E option-type) and IOAM direct export option-type (IOAM direct export option-Type, IOAM DEX option-type). Different types of option data subfields have different formats. For example, when the type of the option data subfield is the IOAM preallocation tracking option type or the IOAM incremental tracking option type, the format of the option data subfield is as shown in Figure 3. When the option data subfield type is IOAM POT option type, the format of the option data subfield is as shown in Figure 4. When the option data subfield type is IOAM E2E option type, the format of the option data subfield is as shown in Figure 5. When the option data subfield type is IOAM DEX option type, the format of the option data subfield is as shown in Figure 6.

Referring to Figure 3, when the type of the option data subfield is the IOAM pre-allocation tracking option type or the IOAM incremental tracking option type, the option data subfield includes the namespace (namespace) ID subfield, the node length (nodelen) subfield, Flags subfield, remaining length subfield, IOAM tracking type subfield, reserved subfield and p node data list subfields. The namespace ID subfield is used to carry the namespace ID. The node length subfield is used to instruct the IOAM node to add data in the option data subfield in multiples of 4 bytes. The remaining length subfield is used to instruct the IOAM node to add data in the option data subfield in multiples of the remaining 4 bytes. The IOAM trace type subfield is used to indicate the data type in the node data table. The p node data table subfields correspond to p IOAM nodes. Each node data table subfield is used to carry the IOAM data of the corresponding IOAM node. The IOAM data includes the node identification, the entry timestamp of the message entering the IOAM node, and the source of the message. The exit timestamp output by the IOAM node, etc.

Referring to Figure 4, when the type of the option data subfield is the IOAM POT option type, the option data subfield includes the namespace ID subfield, the IOAM POT type subfield, the IOAM POT flag subfield and the POT option data subfield. The namespace ID subfield is used to carry the namespace ID. The IOAM POT type subfield is used to carry the IOAM POT type. The IOAM POT flag subfield is used to carry the IOAM POT flag. The length of the POT option data subfield is variable. The POT option data subfield is used to carry IOAM POT data. IOAM POT data includes message identification, etc.

Referring to Figure 5, when the type of the option data subfield is the IOAM E2E option type, the option data subfield includes the namespace ID subfield, the IOAM E2E type subfield and the E2E option data subfield. The namespace ID subfield is used to carry the namespace ID. The IOAM E2E type subfield is used to carry the IOAM E2E type. The E2E option data subfield is used to carry IOAM E2E data. IOAM E2E data includes packet group sequence number (sequence number) for detecting packet loss, packet reordering or packet duplication within the group. IOAM E2E data can also include packets entering IOAM. The entry timestamp of the node, the exit timestamp of the message output from the IOAM node, etc. are used to detect the message transmission delay.

Referring to Figure 6, when the type of option data subfield is IOAM DEX option type, the option data subfield includes namespace ID subfield, flag subfield, IOAM tracking type subfield, reserved subfield, flow identification subfield and Serial number subfield. The namespace ID subfield is used to carry the IOAM namespace. The flag subfield is used to carry the IOAM DEX flag. The IOAM type subfield is used to indicate which data fields should be output. The flow identification field is used to carry the flow identification. The sequence number subfield is used to carry the packet group sequence number for detecting packet loss, packet reordering, packet duplication within the group, etc.

For example, the service information of the slice service includes slice identification (slice ID). The current option fields for slicing business expansion are shown in Figure 7. This option field includes type subfield, length subfield, and flags Subfield, reserved subfield and slice identification subfield. The type subfield is used to indicate the type of this option field. The length subfield is used to indicate the length of the data field of the option field (that is, the total length of the subfields in the option field except the type subfield and the length subfield). The slice identification subfield is used to carry the slice ID.

For example, the service information of the DetNet service includes a path identification (path ID), which indicates the forwarding path that the packet must pass through. For the current option fields for DetNet business expansion, please refer to Figure 8 or Figure 9. The option field shown in Figure 8 is the DetNet strict path option field. The option field includes a type subfield, a length subfield and a path identification subfield; the type subfield is used to indicate the type of the option field; the length subfield Used to indicate the length of the option field; the path identification subfield is used to carry the path identification, which indicates a strict path. The option field shown in Figure 9 is the DetNet loose path option field. The option field includes a type subfield, a length subfield, a source autonomous system (autonomous system, AS) subfield and a path identification subfield; the type subfield Used to indicate the type of the option field; the length subfield is used to indicate the length of the option field; the source AS subfield is used to indicate the AS from which the path originates; the path identification subfield is used to carry the path identifier, which indicates a loose path. .

For example, the service information of the APN service includes APN attributes. APN attributes include APN ID and APN parameters. APN ID includes user group identification (user group identification, user group ID) and application group identification (application group identification, APP group ID). The APN parameters include network performance parameters, which may include at least one of a bandwidth requirement parameter, a delay requirement parameter, a jitter requirement parameter, and a packet loss rate requirement parameter. Taking the APN parameters including bandwidth requirement parameters, delay requirement parameters, jitter requirement parameters and packet loss rate requirement parameters as an example, the current option fields for APN service expansion are shown in Figure 10. This option field includes type subfield, length subfield, APN ID type subfield, flag subfield, APN parameter type subfield, APN ID subfield, intent subfield, bandwidth requirement parameter subfield, and delay requirement parameter. subfield, jitter requirement parameter subfield and packet loss rate requirement parameter subfield. The length of the APN ID subfield is 32 bits or 128 bits, the length of the intent subfield, the length of the bandwidth requirement parameter subfield, the length of the delay requirement parameter subfield, the length of the jitter requirement parameter subfield and the packet loss rate requirement parameter subfield. The length of the fields is 32 bits. Among them, the type subfield is used to indicate the type of the option field. The length subfield is used to indicate the length of this option field. The APN ID type subfield is used to indicate the type of APN ID. The types of APN ID include short APN ID and long APN ID. The length of the APN ID subfield carrying the short APN ID is 32 bits. The length of the APN ID subfield carrying the long APN ID is 32 bits. The length is 128 bits. The APN parameter type subfield is used to indicate which APN parameters are carried in the option field; for example, among the bits arranged from high to low in the APN parameter type subfield, the first bit corresponds to the bandwidth requirement, and the second bit bit corresponds to the delay requirement, the 3rd bit corresponds to the jitter requirement, and the 4th bit corresponds to the packet loss rate requirement; when the first bit is set to 1, it indicates that the option field carries the bandwidth requirement parameter; when When the 2nd bit is set to 1, it indicates that the option field carries the delay requirement parameter; when the 3rd bit is set to 1, it indicates that the option field carries the jitter requirement parameter; when the 4th bit is set to 1, it indicates that the option field carries the jitter requirement parameter. When a bit is set to 1, it indicates that the option field carries the packet loss rate requirement parameter. The APN ID subfield is used to carry the APN ID; the APN ID subfield can include an application group identification space and a user group identification space, and can also include a reserved space. The application group identification space is used to carry the application group identification. The user group The identity space is used to carry the user group identity. The length of the application group identity space and the length of the user group identity space are both variable. The intent subfield is an optional subfield that indicates a set of service requirements for the network. The bandwidth requirement parameter subfield is used to carry the bandwidth requirement parameter. The delay requirement parameter subfield is used to carry the delay requirement parameter. The jitter requirement parameter subfield is used to carry jitter requirement parameters. The packet loss rate requirement parameter subfield is used to carry the packet loss rate requirement parameter.

For example, the business information of the SFC service includes a service path identifier (SPI) and a service request. Service index (SI) identifier. SPI is used to indicate the service function path (SFP). The SI identifier is used to indicate the location of the packet in the SFP. The current option fields for SFC business expansion are shown in Figure 11. The option field includes type subfield, length subfield, version (version) subfield, O flag, undefined (unassigned, U) flag, time to live (TTL) subfield, length subfield, element Data (metadata, MD) type subfield, next protocol (next protocol) subfield, SPI subfield, SI subfield and context header (context header) subfield. The type subfield is used to indicate the type of this option field. The length subfield is used to indicate the length of this option field. The version subfield is used to ensure backward compatibility of this option field with future network service header (NSH) specification updates. The O flag bit is used to indicate whether the message including this option field is an operations administration and maintenance (OAM) message. The U flag is for future use. The TTL subfield is used to indicate the maximum service function forwarder (SFF) hop count of SFP. The length subfield is used to indicate the length of this option field. The MD type subfield is used to indicate the type of metadata carried by this option field. The next protocol subfield is used to indicate the protocol type of the data encapsulated in this option field. The context header subfield is used to carry metadata along the SFP indicated by the SPI subfield. The length of the context header subfield can be fixed or variable. When the length of the context header subfield is variable, the structure of the context header subfield is as shown in Figure 12. The context header subfield includes a metadata class (metadata class) subfield, a type subfield, and undefined (unassigned, U) Flag bit, length subfield and variable-length metadata subfield; the metadata class subfield is used to define the range of the type subfield to provide a hierarchical namespace; the variable-length metadata subfield is used to carry the length Variable metadata; the type subfield is used to indicate the explicit type of metadata to be carried by the variable-length metadata subfield; the length subfield is used to indicate the length of the variable-length metadata subfield, and the U flag is for future use .

Currently, when an IPv6 packet needs to support slicing services, IFIT services, DetNet services, APN services, and SFC services at the same time, the IPv6 extension header of the IPv6 packet needs to support slicing services, IFIT services, DetNet services, and APN services. The service and SFC services respectively expand the option fields (for example, five option fields need to be expanded, and the five option fields correspond to the five services: slice service, IFIT service, DetNet service, APN service and SFC service), and in the slice The option field corresponding to the service carries the business information of the slice service, the option field corresponding to the IFIT service carries the business information of the IFIT service, the option field corresponding to the DetNet service carries the business information of the DetNet service, and the option field corresponding to the APN service carries The option field of carries the service information of the APN service, and the option field corresponding to the SFC service carries the service information of the SFC service. For example, the option field shown in Figure 7 is extended for the slice service, the option field shown in Figure 1 is extended for the IFIT service, the option field shown in Figure 8 or 9 is extended for the DetNet service, and the option field shown in Figure 9 is extended for the APN service. The option fields shown in Figure 10 are expanded to the option fields shown in Figure 11 for the SFC business.

However, according to the protocol, the option field should include type subfield, length subfield and other fixed content used to describe the option field (for example, the option fields shown in Figures 1 to 2 and 7 to 11 all include type subfield and length subfield). When the option field is expanded separately for each service, each expanded option field includes these fixed contents, resulting in a larger length of the IPv6 extension header, a larger overhead of the IPv6 extension header, and a larger overhead of the IPv6 message. In addition, the option field usually also includes some optional subfields for alignment or future expansion (for example, the option fields shown in Figure 1, Figure 2, and Figure 7 all include reserved subfields, and the option field shown in Figure 11 (These reserved subfields and U flag bits are used for alignment or future expansion). These optional subfields will also cause the length of the IPv6 extension header to be larger, resulting in larger overhead of IPv6 messages. The network device needs to process the IPv6 message when forwarding the IPv6 message. The increased length of the IPv6 extension header easily increases the complexity of the network device in processing the IPv6 message, resulting in poor forwarding performance of the network device. decline.

The embodiments of this application provide a technical solution. The same option field can carry business information of at least two different services. Compared with the solution of separately expanding the option field for each service expansion, some fixed content in the option field can be saved. (such as type subfield, length subfield), which helps to reduce message overhead. Moreover, you can also save the overhead caused by some optional subfields in the option field. The technical solutions of the embodiments of the present application can reduce the length of messages, simplify the complexity of message processing by network devices, and improve the forwarding performance of network devices. For example, in the technical solution provided by the embodiments of this application, the same option field can carry business information of the following services, slicing services, DetNet services, APN services, SFC services, etc. Compared with following the following detection services and slicing services, Services, DetNet services, APN services, and SFC services respectively extend the option fields (such as the option fields shown in Figures 1 to 2, and Figures 7 to 11). The technical solution provided by the embodiment of the present application can reduce at least 7 types. The overhead of subfields and 7-length subfields can also reduce the overhead of reserved subfields in the option fields shown in Figures 1, 2, and 7, and the U flag bits in the option fields shown in Figure 11. It should be noted that the option fields shown in Figures 1 to 2 and Figures 7 to 11 are only exemplary and are for extended option fields such as flow detection services, slicing services, DetNet services, APN services, and SFC services. The structure can also be other structures. The technical solution of this application is adapted to the transformation of the option fields shown in Figures 1 to 2 and Figures 7 to 11, and can also be applied to any possible options defined in the future for carrying business information. Transformation of fields.

The technical solutions of the embodiments of this application are introduced below. First, the application scenarios of the embodiments of this application are introduced.

Please refer to Figure 13, which shows a schematic diagram of an application scenario provided by the embodiment of the present application. This application scenario provides a communication network. For example, the communication network is an IPv6 network. The communication network includes a plurality of network devices 101 to 106, and the network devices 101 to 106 are connected in sequence. Network devices 101 to 106 can be used to forward messages. For example, the network devices 101 to 106 include edge network devices. The edge network devices can be used for workstations to access the communication network. The network devices 101 to 106 can be used to forward messages between different workstations accessing the communication network. Enable communication between the different workstations.

The network device may be a switch, a router, a virtual switch or a virtual router. The network devices 101 to 106 may be the same network device. For example, the network devices 101 to 106 are all routers. Alternatively, at least two of the network devices 101 to 106 are different network devices. For example, some of the network devices 101 to 106 are routers and another part is a switch. Workstations connected to the above communication network can be hosts, servers, base stations, virtual machines (VMs), etc. The hosts can be smartphones, tablets, desktop computers or Internet of Things (IoT) devices, etc. The application examples do not limit this.

The communication network includes a forwarding path for forwarding messages, and the forwarding path may include multiple network devices. According to the forwarding direction of the packet, network devices on the forwarding path include an ingress device, an egress device, and at least one transit device located between the ingress device and the egress device. Packets flow into the forwarding path through the ingress device and out of the forwarding path through the egress device. Depending on the length of the forwarding path, the number of transit devices on the forwarding path is different, or the forwarding path only includes ingress devices and egress devices, but not transit devices. In some implementation scenarios, network devices are also called network nodes, gateway devices, routing nodes or routing devices, etc.; ingress devices are also called first nodes, first node devices, head nodes, head node devices, etc.; egress devices are also called tail nodes. , tail node equipment, etc.; the transit equipment is also called a transit node, an intermediate node or an intermediate node equipment, etc.; the forwarding path can also be called a transmission path, communication link, communication channel, communication tunnel or tunnel channel, etc. As shown in Figure 13, the communication network includes a forwarding path P, which is: network device 101—>network device 102—>network device 103—>network device 104—>network device 105—>network device 106. Network device 101 is the head node of the forwarding path P, network device 106 is the tail node of the forwarding path P, and network devices 102 to 105 are all intermediate nodes of the forwarding path P.

In this embodiment of the present application, the same option field includes service subfields corresponding to at least two different services, so that the same option field can carry the service information of the at least two different services, and the network device on the forwarding path can Generate a message including this option field. For example, the head node on the forwarding path adds the option field to the initial message to obtain a message including the option field, or the intermediate node on the forwarding path receives the message including the option field, and the intermediate node modifies the option field. Message gets the message that includes this option field. Here, the head node generates a message including this option field as an example. After the head node generates a message including this option field, it can send the message to the next hop device of the head node. After receiving the message including the option field, the next-hop device can process the message according to the service information carried in the option field to obtain a processed message, and the processed message includes the option field. After obtaining the processed message, the next-hop device can send the processed message to the next-hop device of the next-hop device. After receiving the message including the option field, the next-hop device of the next-hop device can process the message according to the service information carried in the option field. This is repeated until the message including the option field is forwarded to the tail node. The tail node can process the message according to the service information carried in the option field in the received message, and the tail node can also remove the option field in the message. For example, as shown in FIG. 13 , the network device 101 can generate a message including the option field and send the message to the network device 102 . After that, the message including the option field is forwarded to the network device 106 through the network device 102, the network device 103, the network device 104 and the network device 105 in sequence. The network devices 101 to 106 can all use the option in the received message. The service information carried in the field is used to process the message. The network device 106 serving as the tail node can also remove the option field in the message.

In one implementation, the head node maintains the option field, and the head node generates a message including the option field based on the option field. In another implementation manner, the head node generates a message including the option field according to the instruction information sent by the controller. Optionally, the application scenario provided by the embodiment of the present application also includes a controller. The controller is connected to the head node. The controller can send instruction information to the head node to instruct the head node to generate a message including the option field. For example, please refer to FIG. 14 , which shows a schematic diagram of another application scenario provided by an embodiment of the present application. The communication network provided by this application scenario also includes a controller 100 , and the controller 100 is connected to the network device 101 . The controller 100 may also be connected to at least one of the network devices 102 to 106 (not shown in FIG. 14 ), which is not limited in the embodiment of the present application.

Among them, the controller 100 integrates functions such as network management, service control, and network analysis. The controller 100 may be a functional module deployed in a server, or a server, or a server cluster composed of several servers, or a cloud computing service center, or other devices or modules with network control functions. The controller 100 may generate indication information and send the indication information to the network device 101, and the network device 101 generates a message including the option field according to the indication information. Optionally, the indication information is indication information of the option field (for example, the identification of the option field). The network device 101 can maintain multiple option fields, and the network device 101 determines the option field in the multiple option fields based on the indication information. Indicates the option field indicated by the information, and then generates a message including the option field. Alternatively, the indication information includes configuration information of the option field, and the network device 101 generates the option field according to the indication information, and then generates a message including the option field. Alternatively, the indication information includes the option field, and the network device 101 generates a message including the option field according to the indication information, which is not limited in the embodiment of the present application.

It should be noted that the application scenarios shown in Figures 13 and 14 are only examples and are not used to limit the technical solutions of this application. During the implementation process, the controller can also be integrated in the network device, for example, the controller is integrated in the head node. Pass The communication network may include more or less devices than those shown in Figures 13 and 14, and the number of network devices and the number of controllers can be configured as needed, which is not limited in the embodiments of this application.

The above is an introduction to the application scenarios of this application. The following introduces embodiments of the business processing method of this application.

Please refer to Figure 15, which shows a flow chart of a business processing method provided by an embodiment of the present application. This method can be applied to a service processing system including network device A and network device B. For example, the business processing system is the communication network shown in Figure 13 or Figure 14, network device A is the network device 101, and network device B is any one of the network devices 102 to 106. As shown in Figure 15, the method includes the following steps S501 to S504.

S501. Network device A generates message A including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield and a second length subfield. The first service subfield corresponds to the first Service, the second service subfield corresponds to the second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the second service subfield length.

In one embodiment, network device A is the head node. Network device A receives an initial message from a workstation (such as a host). Network device A adds an option field to the initial message to obtain message A including the option field. In another embodiment, network device A is an intermediate node. Network device A receives message B from the previous hop device of network device A. Message B includes the option field. Network device A modifies the message B to include the option field. Message A of option field. For example, network device A modifies the information carried in the option field included in message B, which is not limited in this embodiment of the present application.

In this embodiment of the present application, message A may be an IPv6 message, message A may include an IPv6 extension header, and the option field may be located in the IPv6 extension header. In one example, network device A is the head node, and network device A encapsulates the IPv6 extension header including the option field in the initial message to obtain message A; or, the initial message includes the IPv6 extension header, and network device A encapsulates the IPv6 extension header in the initial message. The option field is added to the IPv6 extension header of the initial message to obtain message A. In another example, network device A is an intermediate node. The message B received by network device A from the previous hop device of network device A includes an IPv6 extension header. The IPv6 extension header includes the option field. Network device A modifies The IPv6 extension header gets message A.

In IPv6 technology, IPv6 extension headers can include hop by hop header (HBH), destination options header (DOH), segment routing header (segment routing header, SRH), fragment header (fragment header, FH) etc. According to business needs, an IPv6 message may include at least one IPv6 extension header. The IPv6 extension header including the option field may be HBH or DOH. That is, the option field may be located in HBH or DOH. For example, message A includes HBH, and the option field is located in the HBH. Alternatively, message A includes DOH, and the option field is located in the DOH. In an example, message A includes SRH and two DOHs. One of the two DOHs is DOH located before SRH, and the other DOH is located after SRH (for example, the DOH located before SRH is called DOH1, and the DOH located after SRH is called DOH1. (DOH2), the option field can be located in DOH1 or DOH2. If the option field is located in the HBH, each network device that receives message A can process message A according to the option field. If the option field is located in DOH1, each network device that receives message A and hits the destination address of message A can process message A according to the option field. If the option field is located in DOH2, usually only the tail node needs to process message A according to the option field.

In this embodiment of the present application, the option field includes a first service subfield, a second service subfield, a first length subfield, and a second length subfield. The first service subfield corresponds to the first service, and the second service subfield The subfield corresponds to the second service. The first service subfield is used to carry the service information of the first service. The second service subfield is used to carry the service information of the second service. Information, the first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield. Among them, the first business and the second business are different from each other. The length of the first service subfield is equal to or not equal to the length of the second service subfield. Optionally, the length of the first service subfield is 4×p bytes, the length of the second service subfield is 4×q bytes, p and q are both positive integers, and p and q are equal or unequal. Wherein, the first length subfield indicates the length of the first service subfield, and the value in the first length subfield indicates the length of the first service subfield, and the second length subfield indicates the length of the second service subfield. The value in the second length subfield indicates the length of the second service subfield. The length of the first length subfield is equal to or not equal to the length of the second length subfield.

In this embodiment of the present application, the option field includes a flag subfield, and the flag subfield is used to indicate that the option field includes a first service subfield and a second service subfield. Alternatively, the option field includes a type space corresponding to the first business subfield (for example, called the first type space) and a type space corresponding to the second business subfield (for example, called the second type space). The first type The space is used to indicate that the option field includes the first service subfield, and the second type space is used to indicate that the option field includes the second service subfield. For this reason, this option field includes the following two possible implementations.

A first implementation manner: the option field includes a flag subfield, and the flag subfield is used to indicate that the option field includes a first service subfield and a second service subfield. For example, the flag subfield includes a first service flag bit and a second service flag bit. The first service flag bit is used to indicate that the option field includes the first service subfield, and the second service flag bit is used to indicate that the option field includes the first service subfield. Includes the second business subfield.

In an optional embodiment, the first length subfield corresponds to the first service flag bit, and the second length subfield corresponds to the second service flag bit. For example, the first service flag bit and the second service flag bit are arranged in order, the first length subfield and the second length subfield are arranged in order, and the first length subfield and the second length subfield are arranged in the same order as the first service The order of the flag bits and the second service flag bits corresponds to each other. That is, through the correspondence of the arrangement sequence, the first length subfield corresponds to the first service flag bit, and the second length subfield corresponds to the second service flag bit. Optionally, the first service subfield and the second service subfield are also arranged in order, and the order of the first service subfield and the second service subfield corresponds to the order of the first service flag bit and the second service flag bit. . That is, through the correspondence of the arrangement order, the first service subfield corresponds to the first service flag bit, and the second service subfield corresponds to the second service flag bit. When the network device processes the message A including the option field, the network device can determine the first length subfield, the second length subfield, and the first service subfield according to the order of the first service flag bit and the second service flag bit. and the second service subfield, and the network device determines the length of the first service subfield according to the first length subfield, and determines the length of the second service subfield according to the second length subfield.

In a specific implementation, the flag subfield includes m service flag bits, the m service flag bits correspond to m services one-to-one, the m services are different from each other, and each service flag in the m service flag bits The bit is used to indicate whether the option field includes the service subfield of the service corresponding to each service flag bit. The m service flag bits include the first service flag bit and the second service flag bit. The m services include the first service flag bit. Service and second service, m≥2, and m is an integer, for example, m=8. Wherein, any service flag bit is used to indicate whether the option field includes the service subfield corresponding to the any service flag bit. The value in the any service flag bit is used to indicate whether the option field includes the service subfield. Any service flag bit corresponds to the service subfield of the service. For example, the value in any service flag bit is 0 or 1, and "1" is used to indicate that the option field includes the service subfield of the service corresponding to any service flag bit. , "0" is used to indicate that the option field does not include the service subfield of the service corresponding to any service flag bit. Among them, the m service flag bits are arranged in order. For example, the m service flag bits are arranged in order from high bit to low bit, or in order from low bit to high bit. Optionally, the option field includes k service length subfields, the k service length subfields and the k services in the m service flag bits. The flag bits have a one-to-one correspondence. For example, the k service length subfields correspond to the first k service flag bits among the m service flag bits. 1≤k≤m, and k is an integer. In the k service flag bits, When any service flag bit in the flag bit indicates that the option field includes the service subfield of the service corresponding to the any service flag bit, the service length subfield corresponding to the any service flag bit is used to indicate the length of the service subfield, The k service length subfields include a first length subfield and a second length subfield, and the k service flag bits include a first service flag bit and a second service flag bit. The k service length subfields are adjacent, and the flag subfield is adjacent to the k service length subfields. For example, the flag subfield is adjacent to the high bits of the k service length subfields (that is, the flag subfield is in the k business length subfields before). The k service length subfields can be arranged in order, and the order of the k service length subfields corresponds to the order of the k service flag bits. For example, the k service length subfields are in order from high to low. Arrange them in order from lowest to highest.

In an optional embodiment, the m service flag bits further include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield. The first service subfield, the second service subfield and the third service subfield are arranged in order. The third service flag bit and the third service subfield all correspond to the third service. The first service, the second service and the third service are mutually exclusive. Similarly, the m services include the third service. The third service subfield may be the last service subfield in the option field. For example, the m service flag bits are arranged in order, and the third service subfield is the last service flag bit among the m service flag bits. Indicated business subfield. In this application, the service length subfield can be set in the option field (for example, the service length subfield is called the third length subfield) to indicate the length of the third service subfield, or it can be based on the length of the option field. and the length of the subfields in the option field except the third service subfield determine the length of the third service subfield. Based on this, the first implementation includes the following two possible situations.

The first case: the option field includes a third service subfield and a third length subfield, and the third length subfield is used to indicate the length of the third service subfield. For example, k=m, that is, the number of service length subfields is equal to the number of service flag bits, the number of service length subfields is also m, and m service flag bits correspond to m service length subfields one-to-one. In When any one of the m service flag bits indicates that the option field includes the service subfield of the service corresponding to the any service flag bit, the service length subfield corresponding to the any service flag bit is used to indicate the service subfield. The length of the field.

The second case: the option field includes a third service subfield, and the third service subfield is determined according to the length of the option field and the length of the subfields in the option field except the third service subfield. For example, k=m-1, that is, the difference between the number of service length subfields and the number of service flag bits is 1, and the k service flag bits do not include the third service flag bit (that is, the m The service flag bits include a third service flag bit used to indicate the third service subfield, but the option field does not include a service length subfield used to indicate the length of the third service subfield).

In an optional embodiment, the option field further includes a flow indication subfield, which is used to indicate the data flow to which message A belongs. For example, the flow indication subfield is used to carry flow indication information, and the flow indication information is used to indicate the data flow to which message A belongs. The flow indication information may be a flow identifier. For example, the APN ID can be used as the flow identifier, or all or part of the application group identification (APP-Group-ID) in the APN ID, and/or the user group identification (USER -Group-ID) as the flow identifier. In other embodiments, other identification information may also be used as the flow identification. In one example, the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order (for example, the flow indication subfield is after the flag subfield), and the flag subfield is also used to indicate the option field. The flow indication subfield is included in When the network device determines that the option field includes the flow indication subfield, the network device determines that the flow indication subfield is included according to the flow indication subfield. segment handles packets that include this option field. In another example, the flow indication subfield, the flag subfield, the first service subfield and the second service subfield are arranged in order (for example, the flow indication subfield is before the flag subfield). Generally, the option field includes the flow indication by default. subfield, there is no need to set the flow flag bit in the flag subfield to indicate the flow indication subfield. The network device processes packets including the option field based on the flow indication subfield without referring to the value of the flow flag bit.

As an example of this application, Figure 16 and Figure 17 show a schematic structural diagram of two option fields provided by the embodiment of this application. As shown in Figures 16 and 17, the option field includes a type subfield, a length subfield, a flag subfield, k service length subfields, a flow indication subfield and n service subfields. The flag subfield includes m service flag bits. The m service flag bits correspond to m services one by one. The n service subfields correspond to n service flag bits among the m service flag bits. k= m or k=m-1, n≤m, and m, k and n are all positive integers. Among them, the type subfield is used to indicate the type of the option field. The length subfield is used to indicate the length of the data field of the option field (that is, the total length of the subfields in the option field except the type subfield and the length subfield). Referring to Figure 16, the flag subfield, the k service length subfields, the flow indication subfield and the n service subfields are arranged in order. The flag subfield also includes a flow flag bit, which is used to indicate the option. The flow indication subfield is included in the field. As shown in Figure 17, the flow indication subfield, the flag subfield, the k service length subfields and the n service subfields are arranged in order.

Referring to Figure 16 and Figure 17, in an example, k=m, the k service length subfields correspond to the m service flag bits one-to-one, and each of the m service flag bits is used to indicate the Whether the option field includes the service subfield of the service corresponding to each service flag bit. When each service flag bit indicates that the option field includes the service subfield of the service corresponding to each service flag bit, each service flag The service length subfield corresponding to the bit is used to indicate the length of the service subfield. For example, service length subfield 1 and service subfield 1 both correspond to service flag bit 1. Service flag bit 1 is used to indicate that the option field includes service subfield 1, and service length subfield 1 is used to indicate the length of service subfield 1. . For another example, the service length subfield 2 and the service subfield 2 both correspond to the service flag bit 2. The service flag bit 2 is used to indicate that the option field includes the service subfield 2, and the service length subfield 2 is used to indicate the service subfield 2. length. By analogy, it is assumed that the service length subfield k and the service subfield n both correspond to the service flag bit m, the service flag bit m is used to indicate that the option field includes the service subfield n, and the service length subfield k is used to indicate the service subfield n length.

Referring to Figure 16 and Figure 17, in another example, k=m-1, the k service length subfields correspond to the k service flag bits among the m service flag bits, for example, the k service length subfields The subfield has a one-to-one correspondence with the first k service flag bits among the m service flag bits. Each service flag bit among the k service flag bits is used to indicate whether the option field includes the corresponding service flag bit. The service subfield of the service. When each service flag bit indicates that the option field includes the service subfield of the service corresponding to each service flag bit, the service length subfield corresponding to each service flag bit is used to indicate the service. The length of the subfield; the mth service flag bit is used to indicate whether the option field includes the service subfield of the service corresponding to the mth service flag bit, and the mth service flag bit indicates that the option field includes the service subfield. When m service flag bits correspond to the service subfield of the service, the length of the service subfield corresponding to the mth service flag bit is based on the length of the option field and the total length of the subfields in the option field except the service subfield. The length is determined. For example, service length subfield 1 and service subfield 1 both correspond to service flag bit 1. Service flag bit 1 is used to indicate that the option field includes service subfield 1, and service length subfield 1 is used to indicate the length of service subfield 1. . For another example, the service length subfield 2 and the service subfield 2 both correspond to the service flag bit 2. The service flag bit 2 is used to indicate that the option field includes the service subfield 2, and the service length subfield 2 is used to indicate the service subfield 2. length. By analogy, it is assumed that the service length subfield k and the service subfield n-1 both correspond to the service flag bit m-1, and the service flag bit m-1 is used to indicate that the option field includes the service subfield n-1, the service length subfield k is used to indicate the length of the service subfield n-1. Assume further that the service subfield n corresponds to the service flag bit m. The service flag bit m is used to indicate that the option field includes the service subfield n. The length of the service subfield n is equal to the length of the option field and the length of the option field except the service subfield. The difference in length of the subfields other than field n; that is, the length of the service subfield n is equal to the length of the option field and the type subfield, length subfield, flag subfield, service length subfield 1 to k, flow Indicates the difference between the total lengths of the indication subfield and service subfields 1 to n-1.

The first service subfield, the second service subfield and the third service subfield described above are any three service subfields arranged in sequence in the option fields shown in Figures 16 and 17. In an example, the first service subfield is service subfield 1, the second service subfield is service subfield 2, and the third service subfield is service subfield 3. In another example, the first service subfield is service subfield 1, the second service subfield is service subfield 3, and the third service subfield is service subfield n. In another example, the first service subfield is service subfield 2, the second service subfield is service subfield 3, and the third service subfield is service subfield n. For example, in the option fields shown in Figures 16 and 17, m=k=8. For the option field shown in Figure 17, the length of each service length subfield may be 3 bits. Figure 16 illustrates that the flow flag bit is located at the highest bit of the flag subfield. The flow flag bit can be any flag bit in the flag subfield. Figure 16 and Figure 17 illustrate that the service flag bits 1~m are arranged in the order from high bit to low bit. The service flag bits 1~m can also be arranged in the order from low high bit to high bit, or arranged in other ways. The flag subfield can also be arranged in order. The m services can be mapped to the m services in other ways.

The second implementation mode: the option field includes a first type space and a second type space. The first type space is used to indicate that the option field includes the first business subfield, and the second type space is used to indicate that the option field includes The second business subfield.

In this second implementation manner, the first length subfield is in the first service subfield, and the second length subfield is in the second service subfield. That is, the first length subfield is part of the first service subfield, and the second length subfield is part of the second service subfield. In this embodiment, the first length subfield is also called the first length space, and the second length subfield is also called the second length space. Optionally, the first service subfield also includes a first type space, and the second service subfield also includes a second type space. The first type space is used to indicate the first service (that is, the first type space is used to indicate The first service subfield corresponds to the first service), and the second type space is used to indicate the second service (that is, the second type space is used to indicate that the second service subfield corresponds to the second service). Optionally, the first service subfield also includes a first data space, and the second service subfield also includes a second data space. The first data space is used to carry the service information of the first service, and the second data space is used to carry the service information of the first service. Carrying the service information of the second service, the first length subfield is used to indicate the length of the first data space, and the second length subfield is used to indicate the length of the second data space. Optionally, the option field also includes a flow indication subfield, which is used to indicate the data flow to which message A belongs. For example, the flow indication subfield is used to carry flow indication information, and the flow indication information is used to indicate the data flow to which message A belongs. The flow indication information may be a flow identifier.

In a specific embodiment, the option field includes a flow indication subfield and n service subfields. The flow indication subfield and the n service subfields are arranged in sequence. The n service subfields correspond to n services one by one. Each of the n service subfields includes a type space, a service length subfield (or service length space) and a data space. The type space in each service subfield is used to indicate each service. The service corresponding to the subfield. The data space in each service subfield is used to carry the service information of the corresponding service. The service length subfield in each service subfield is used to indicate the length of the data space in each service subfield. . For example, the structure of the option field is shown in Figure 18. The option field includes a type subfield, a length subfield, a flow indication subfield and n service subfields. The type subfield indicates the type of this option field. This length subfield is used to indicate the length of the data field of the option field (that is, the length of the data field in the option field except the The total length of the type subfield and subfields other than the length subfield). Service subfield 1 includes type space 1, service length subfield 1 and data space 1. Type space 1 is used to indicate that service subfield 1 corresponds to service 1. Service length subfield 1 is used to indicate the length of data space 1. Data space 1 is used to carry the business information of business 1. As another example, the service subfield 2 includes a type space 2, a service length subfield 2 and a data space 2. The type space 2 is used to indicate that the service subfield 2 corresponds to the service 2, and the service length subfield 2 is used to indicate the data space 2. length, data space 2 is used to carry the service information of service 2, and so on. The first service subfield, the second service subfield and the third service subfield described above are any three service subfields arranged in sequence in the option field shown in Figure 18. For example, in one example, the first service subfield is service subfield 1, the second service subfield is service subfield 2, and the third service subfield is service subfield n.

In the embodiment of this application, the first service includes any one of the slicing service, the following detection service, the APN service, the DetNet service, the SFC service and the path segment service, and the second service includes the slicing service, the following detection service and the APN service. , DetNet service, SFC service and path segment service any one. The third service includes any one of slicing service, flow detection service, APN service, DetNet service, SFC service and path segment service. For example, the first service is the slicing service, the second service is the APN service, and the third service is the SFC service. Among them, the flow-following detection service includes the IFIT service or the IOAM service, and may also be other flow-following detection services. The business information of any business includes information related to the business. For example, the business information of any business includes the business information of the business carried in the option field when the option field is independently expanded for the business. It may also include information related to the business. of other information. For example, the service information of the slice service includes the slice identifier. The business information of the flow-following detection service includes flow identification, etc. The business information of the APN service includes an APN ID and may also include APN parameters. The APN ID includes at least one of a user group identifier and an application group identifier. The APN parameters include bandwidth requirement parameters, delay requirement parameters, packet loss rate requirement parameters, Dithering requires at least one of the parameters. The service information of DetNet service includes path identification. The business information of the SFC service includes service path identification, service index identification, etc. The business information of the path segment service includes the path segment ID. The path segment ID is used to indicate a path segment. The path segment ID corresponds to a segment list (segment list). The segment list includes each path segment on the path segment indicated by the path segment ID. The segment identifier (SID) corresponding to the network device. For example, the path segment service is the segment routing internet protocol version 6 (SRv6) path segment service. The service information of the SRv6 path segment service is the SRv6 path segment ID. The SRv6 path segment ID is usually located in the segment routing The last entry in the segment list (segment list) of the segment routing header (SRH).

S502. Network device A sends message A to network device B.

In one embodiment, network device B is the next hop device of network device A. Network device A searches the routing table of network device A according to the destination address of message A to determine the egress port corresponding to message A in network device A. , Network device A sends message A to network device B through the egress port corresponding to message A. For example, as shown in Figures 13 and 14, network device A is network device 101, network device B is network device 102, and network device 101 sends message A to network device 102 through the egress port corresponding to message A. Alternatively, network device A is network device 102, network device B is network device 103, and network device 102 sends message A to network device 103 through the egress port corresponding to message A.

In another embodiment, network device B is not the next hop device of network device A. Network device B is connected to network device A through other network devices, and network device A sends message A to network device B through the other network devices. For example, as shown in Figure 13 and Figure 14, network device A is network device 101, network device B is network device 103, network device 101 sends message A to network device 103 through network device 102, that is, network device 101 sends message A Forwarded to network device 102, network device 102 forwards message A to network device 103. Or, network device A is network device 102, network Device B is network device 104. Network device 102 sends message A to network device 104 through network device 103. That is, network device 102 forwards message A to network device 103, and network device 103 forwards message A to network device 104. .

S503. Network device B receives message A.

Corresponding to network device A sending message A to network device B, network device B receives message A.

S504. Network device B processes message A according to the first service subfield included in the option field of message A.

Network device B may be an intermediate node or tail node on the forwarding path of message A. According to S501, the option field may be located in HBH, DOH1 or DOH2 of message A. If this option field is located in the HBH, each network device that receives message A can process message A based on this option field. If this option field is located in DOH1, each network device that receives message A and hits the destination address of message A can process message A according to this option field. If the option field is located in DOH2, only the tail node needs to process message A according to the option field.

In one embodiment, network device B is an intermediate node. If the option field is located in the HBH of message A, network device B processes message A according to the option field. If this option field is located in DOH1 of message A, network device B determines whether network device B hits the destination address of message A. If network device B hits the destination address of message A, network device B processes the message according to this option field. A. If network device B does not match the destination address of message A, network device B does not process message A according to this option field. If this option field is located in DOH2 of message A, network device B does not process message A based on this option field. In another embodiment, network device B is the tail node. If the option field is located in the HBH of message A, network device B processes message A according to the option field. If this option field is located in DOH1 of message A, network device B determines whether network device B hits the destination address of message A. If network device B hits the destination address of message A, network device B processes the message according to this option field. A. If network device B does not match the destination address of message A, network device B does not process message A according to this option field. If the option field is located in DOH2 of message A, network device B processes message A based on the option field. In a specific implementation manner, network device B as the tail node can also remove the option field in message A, which is not limited in the embodiment of the present application.

This embodiment of the present application takes network device B as an example to process message A according to the option field. This option field includes n service subfields corresponding to n services one-to-one. The n service subfields are arranged in order. Network device B processes the n service subfields in sequence according to the order of the n service subfields. Message A. For example, the n services include a first service and a second service, and the n service subfields include a first service subfield corresponding to the first service and a second service subfield corresponding to the second service. The first service subfield The fields and the second service subfield are arranged in order, and the network device B processes the message A according to the first service subfield and the second service subfield in turn. In this application, network device B may support all of the n services, or may not support at least one of the n services. When network device B processes message A according to this option field, if the network Device B supports a certain service, and network device B processes message A according to the service subfield of the certain service. If network device B does not support a certain service, network device B skips the service subfield of the certain service.

In one embodiment, the option field includes n service length subfields corresponding to the n services one-to-one. For each of the n services, network device B determines the length of the service according to the service length subfield corresponding to each service. Determine the length of the service subfield for each service. If network device B supports each service, network device B obtains the service information carried in the service subfield of each service according to the length of the service subfield, and then obtains the service information carried in the service subfield according to the length of the service subfield. Process message A. If network device B does not support each service, network device B skips the service subfield of each service according to the length of the service subfield of each service. For example, the n services include a first service and a second service, and the n service length subfields include a first length subfield corresponding to the first service and a first length subfield corresponding to the second service. Second length subfield. Network device B determines the length of the first service subfield based on the first length subfield; if network device B supports the first service, network device B obtains the service information carried in the first service subfield based on the length of the first service subfield ( That is, the service information of the first service), and then processes message A according to the service information of the first service; if network device B does not support the first service, network device B skips the first service subfield according to the length of the first service subfield. field. Similarly, network device B determines the length of the second service subfield based on the second length subfield; if network device B supports the second service, network device B obtains the length of the second service subfield based on the length of the second service subfield. service information (that is, the service information of the second service), and then process message A according to the service information of the second service; if network device B does not support the second service, network device B skips the second service subfield according to the length of the second service. 2. Business subfield.

In another embodiment, the option field includes n-1 service length subfields corresponding to the first n-1 services among the n services. For each service in the first n-1 services, network device B determines the length of the service subfield of each service according to the service length subfield corresponding to each service; if network device B supports each service, Network device B obtains the service information carried in the service subfield according to the length of the service subfield of each service, and then processes message A according to the service information carried in the service subfield; if network device B does not support each service service, network device B skips the service subfield of each service according to the length of the service subfield of each service. For the nth service among the n services, network device B divides the service subfield of the nth service according to the length of the option field and the service subfield of the option field (for convenience of description, the service subfield of the nth service is The length of subfields other than the nth service subfield determines the length of the nth service subfield; if network device B supports the nth service, network device B determines the length of the nth service subfield according to the nth service subfield. length to obtain the service information carried in the nth service subfield, and then process the message A according to the service information carried in the nth service subfield; if network device B does not support the nth service, the network device B skips the n-th service subfield according to the length of the n-th service subfield. For example, the n services include a first service and a second service, the n-1 service length subfields include a first length subfield corresponding to the first service, and the second service is the nth service. Network device B determines the length of the first service subfield based on the first length subfield; if network device B supports the first service, network device B obtains the first service carried in the first service subfield based on the length of the first service subfield. service information, and then processes message A according to the service information of the first service; if network device B does not support the first service, network device B skips the first service subfield according to the length of the first service subfield. Network device B determines the length of the second service subfield based on the length of the option field and the length of the subfields in the option field except the second service subfield; if network device B supports the second service, network device B determines the length of the second service subfield based on the length of the option field. The length of the second service subfield is used to obtain the service information of the second service carried in the second service subfield, and then the message A is processed according to the service information of the second service; if network device B does not support the second service, network device B processes message A according to the second service subfield. The length of the second service subfield skips the second service subfield. Optionally, for the n-th service, network device B can also first determine whether network device B supports the n-th service. If network device B supports the n-th service, network device B determines whether network device B supports the n-th service according to the length and sum of the option fields. The length of the subfields in this option field except the nth service subfield determines the length of the nth service subfield; if network device B does not support the nth service, network device B directly skips this option. Field, the embodiment of this application does not limit this.

In an optional embodiment, the option field also includes a flow indication subfield. The flow indication subfield is used to indicate the data flow to which message A belongs (for example, data flow A to which message A belongs). Network device B responds according to the flow indication subfield. The flow indication subfield and the n service subfields process message A. For example, network device B determines the data flow A to which message A belongs based on the flow indication subfield. For each of the n services, if network device B supports each service, network device B determines the data flow A to which the message A belongs. Flow A is associated (or simultaneously associated) with the local configuration information of each service. Network device B is based on the local configuration information of each service. The service information carried in the service subfield of the service and the local configuration information are processed in message A. The embodiment of this application takes network device B supporting the first service as an example. Network device B processes the report according to the flow indication subfield and the first service subfield (that is, the service subfield of the first service) included in the option field. Text A. In a specific implementation, network device B determines that message A belongs to data flow A based on the flow indication information carried in the flow indication subfield, and network device B obtains the service information of the first service from the first service subfield, Network device B determines local configuration information associated with both data flow A and the first service (for example, the local configuration information associated with both data flow A and the first service is called first local configuration information), and network device B determines the local configuration information associated with both data flow A and the first service. The local configuration information and the service information of the first service are processed in message A. For example, the first local configuration information includes program instructions in network device B that are associated with both data flow A and the first service. Network device B executes the program instructions to process message A. Wherein, the program instruction includes at least one processing action (action). The at least one processing action may include, for example, statistical actions, detection actions, forwarding actions, etc. The first local configuration information may also include data flow A and data flow A in network device B. Other configuration information associated with the first service is not limited in this application.

In one embodiment, the first service is a slice service, and the first local configuration information includes resource configuration information, program instructions, etc. in network device B that are associated with both data flow A and the slice service. The resource configuration information may include the slice identifier of the slice service, the slice interface in network device B that carries the slice service, the correspondence between the slice identifier of the slice service and the slice interface in network device B that carries the slice service, etc. The program instructions may include the slice identifier of the slice service and the processing action in network device B that is associated with both data flow A and the slice service. For example, the processing action includes a forwarding action and a slice interface corresponding to the forwarding action. For example, the service information of the first service carried in message A is the slice identifier of the slice service. Network device B determines the program associated with both data flow A and the slice service from the first local configuration information based on the slice identifier. instruction, and then executes the program instruction to process message A. For example, network device B executes the program instruction to forward message A through the slice interface associated with the slice service.

In another embodiment, the first service is an accompanying detection service, and the first local configuration information includes program instructions in network device B that are associated with both data flow A and the accompanying detection service. The program instructions may include the flow identifier of the flow detection service and the processing actions in network device B that are associated with both the data flow A and the flow detection service. These processing actions may include statistical actions, detection actions, etc. The statistical actions may be Including what statistics are included. For example, statistics are collected on the reception timestamps of packets that network device B receives that belong to data flow A and belong to the flow-following detection service, and statistics are collected on the sending of packets that network device B sends that belong to data flow A and belong to the flow-following detection service. Timestamp, statistics of the packet sequence number of the packets belonging to the data flow A and the flow-following detection service, statistics of the transmission delay of the packets belonging to the data flow A and the flow-following detection service in network device B, etc. . Among them, the flow-following detection service includes IFIT service or IOAM service. In one example, the first service is an IFIT service, the service information of the first service carried in message A is the flow identifier of the IFIT service, and network device B determines from the first local configuration information according to the flow identifier of the IFIT service. Data flow A and the IFIT service are both associated with program instructions, and then the program instructions are executed to process message A. For example, network device B executes the processing actions included in the program instructions to collect statistics on the reception timestamp of message A received by network device B, the sending timestamp of message A sent by network device B, the message sequence of message A, etc. Quality information, network device B can also report these transmission quality information and the flow identifier of the IFIT service to the controller, so that the controller determines the transmission quality of the IFIT service based on the transmission quality information of the IFIT service sent by multiple network devices. In another example, the first service is an IOAM service. The service information of the first service carried in message A is the flow identifier of the IOAM service. Network device B determines from the first local configuration information based on the flow identifier of the IOAM service. Program instructions associated with both data flow A and the IOAM service, and then execute the program instructions to process message A. For example, network device B executes the processing actions included in the program instructions to perform service level processing based on message A. Detection processing such as agreement (service-level agreement, SLA) detection and path verification may specifically include network device B adding the reception timestamp of message A when network device B receives message A, and the time stamp of network device B sending message A. Sending timestamp, transmission delay of message A in network device B, metadata (MD) of network device B, etc.

In another embodiment, the first service is an APN service, and the first local configuration information includes resource configuration information, program instructions, etc. in network device B that are associated with both data flow A and the APN service. The resource configuration information may include the forwarding interface allocated by network device B for the APN service, the bandwidth allocated by network device B for the APN service, etc. to ensure the bandwidth, delay, jitter, packet loss rate and other requirements of the APN service. The program instructions may include the APN attribute of the APN service and the processing actions associated with the data flow A and the APN service in network device B, such as forwarding actions and forwarding interfaces corresponding to the forwarding actions. For example, the service information of the first service carried in message A is the APN attribute of the APN service. The APN attribute includes the APN ID and APN parameters. Network device B determines the data from the first local configuration information based on the APN attribute. Both flow A and the APN service are associated with program instructions, and then the program instructions are executed to process message A. For example, network device B forwards message A through the forwarding interface associated with the APN service.

In another embodiment, the first service is a DetNet service, and the first local configuration information includes resource configuration information, program instructions, etc. in network device B that are associated with both data flow A and the DetNet service. The resource configuration information may include the path identifier of the DetNet service, the path resources in network device B corresponding to the forwarding path indicated by the path identifier (for example, the interface corresponding to the forwarding path, the interface bandwidth corresponding to the forwarding path, the corresponding the interface rate of the forwarding path, etc.). The program instructions may include the path identifier of the DetNet service and the processing actions associated with the data flow A and the DetNet service in network device B, such as forwarding actions and forwarding interfaces corresponding to the forwarding actions. For example, the service information of the first service carried in message A is the path identifier of the DetNet service. Network device B determines from the first local configuration information according to the path identifier of the DetNet service that the data stream A and the DetNet service are both connected. The associated program instruction is then executed to process message A. For example, network device B determines the path resource of the forwarding path indicated by the path identifier in network device B based on the path identifier of the DetNet service, and network device B forwards message A through the path resource.

In another embodiment, the first service is an SFC service, and the first local configuration information includes resource configuration information, program instructions, etc. in network device B that are associated with both data flow A and the SFC service. The resource configuration information may include a service path identifier (SPI) of the SFC service and a path resource in network device B corresponding to the service function path (SFP) indicated by the SPI. The program instructions may include the SPI of the SFC service and the processing actions in network device B that are associated with both data flow A and the SFC service, such as forwarding actions and forwarding interfaces corresponding to the forwarding actions. For example, the service information of the first service carried in message A is the SPI of the SFC service, and network device B determines from the first local configuration information based on the SPI of the SFC service that it is associated with both data flow A and the SFC service. program instruction, and then execute the program instruction to process message A. For example, network device B determines the path resource of the SFP indicated by the SPI in network device B based on the SPI of the SFC service, and forwards message A through the path resource.

In another embodiment, the first service is a path segment service, network device B is the tail node, and the first local configuration information includes path segment configuration information and program instructions in network device B that are associated with both data flow A and the path segment service. wait. The path segment configuration information may include the path segment ID of the path segment service, and the processing policy information corresponding to the path segment ID in network device B; the path segment ID is used to indicate a path segment, and the processing policy information is used to indicate a path segment. The processing strategy of the path segment, for example, the processing strategy information includes path statistical information, and the path statistical information is used to indicate statistics on the performance of the path segment (packet loss, delay, etc.). The program instructions may include the path segment ID of the path segment service and processing actions in network device B that are associated with both data flow A and the path segment service, for example, including statistical actions, and the statistical actions may indicate that the network Device B collects statistics on the performance (packet loss, delay, etc.) of the path segment indicated by the path segment ID. For example, the service information of the first service carried in message A is the path segment ID of the path segment service. Network device B determines the path segment ID of the path segment service from the first local configuration information and is related to data flow A and The program instructions associated with the path segment services are then executed to collect statistics on the performance of the path segment indicated by the path segment ID based on message A. The path segment ID corresponds to a segment list (segment list), and the segment list includes segment identifiers (SIDs) corresponding to each network device on the path segment indicated by the path segment ID. In an example, the path segment service is an SRv6 path segment service, the path segment ID is an SRv6 SID, the segment list is an SRv6 segment list, and each SID in the segment list is an SRv6 SID.

The above description about the service information of the first service, the first local configuration information, and the network device B processing the message A according to the first local configuration information and the service information of the first service are only exemplary. According to the service information of the first service and the first local configuration information, network device B performs different processing according to the first local configuration information and the service information of the first service. Moreover, in addition to processing message A according to the service information included in the option field of message A, network device B can also process message A according to other information included in message A, which information may carry In the option field, it may also be outside the option field, which is not limited in the embodiment of the present application. In addition, the local configuration information associated with both data flow A and the first service in different network devices is the same or different. That is to say, for the same first service information (that is, the service information of the first service) carried in the message A, the processing behaviors associated with the first service performed on different network devices are different. For example, the program instructions associated with the first service in some network devices include the first service information and the statistical actions associated with the first service, and the program instructions associated with the first service in other network devices include the first service information and the first service The associated detection action, and the program instructions associated with the first service in some network devices include the first service information and the forwarding action associated with the first service, etc., which are not limited in the embodiments of the present application.

To sum up, in the service processing method provided by the embodiment of the present application, since an option field of the message includes a first service subfield corresponding to the first service and a second service subfield corresponding to the second service, therefore, The one option field can carry the service information of the first service and the service information of the second service. That is, the one option field can carry the service information of at least two different services. Therefore, there is no need to separately expand the option field for each service. Compared with the current solution of separately extending the option field for each service, the overhead caused by some fixed content in the option field can be saved, which helps to reduce message overhead. In the current solution to expand the option field separately for each service, each option field usually also includes some optional subfields for alignment or future expansion. These optional subfields can also easily lead to larger message overhead, which is relatively Compared with the current solution of separately extending the option fields for each service, this application can also save the overhead caused by some optional sub-fields and further reduce the message overhead. In the current solution of separately extending the option field for each service, the length of the message is relatively large, resulting in high complexity of network equipment processing the message and low forwarding performance of the network equipment. The technical solution provided by this application can reduce the length of packets, help simplify the complexity of packet processing by network equipment, and improve the forwarding performance of network equipment.

The option field provided by this application also includes a first length subfield corresponding to the first service and a second length subfield corresponding to the second service. The first length subfield is used to indicate the length of the first service subfield. The second length subfield is used to indicate the length of the second service subfield. When the network device processes a message including this option field, the network device can determine the length of the first service subfield based on the first length subfield. The service information carried in the field processes the message or skips the first service subfield, and the network device can determine the length of the second service subfield according to the second length subfield to process the message according to the service information carried in the second service subfield. message or skip the second service subfield. Since the option field includes a length subfield used to indicate the length of each service subfield (such as the first service subfield and the second service subfield), the lengths of different service subfields may be equal or unequal, Can be flexible according to actual needs Setting the length of each service subfield will not affect the network device's processing of packets containing this option field.

In addition, in the technical solution provided by this application, multiple services can be carried out for the same message of the same data flow, the services carried out for the packets of different data flows can be the same or different, and the same business carried out for different data flows can be carried out. Business information can be different. For example, for the same packet of the first data flow, the slicing service, flow detection service and DetNet service are carried out; for the same packet of the second data flow, the slicing service, APN service and SFC service are carried out; for the packet of the first data flow The business information of the slicing service carried out may be different from the business information of the slicing service carried out for the packets of the second data flow (for example, the business information of the slicing service carried out for the packets of the first data flow is slice identification 1, and the business information of the slicing service carried out for the packets of the second data flow is slice identification 1, The business information of the slice service carried out by the packets of the data flow is the slice identifier 2). Based on this, the network device may have different processing behaviors for the option fields included in the packets of different data flows. When the network device processes the message including the option field, it also refers to the local configuration information. This application sets a flow indicator subfield in the option field to indicate the data flow to which the message including the option field belongs, so that the network device can according to The flow indication subfield determines the data flow to which the message belongs, and then processes the message according to the local configuration information associated with both the data flow and the service information carried by the option field. Such a setting method can enable the network device to Achieve differentiated processing of different data streams.

In an optional embodiment, network device B supports the first service and the second service, and network device B also processes message A according to the second service subfield included in the option field of message A. As shown in Figure 19, the method also includes the following step S505a.

S505a. Network device B processes message A according to the second service subfield included in the option field of message A.

The implementation process of S505a can refer to the implementation process of S504, and will not be described again here.

In an optional embodiment, network device B supports the first service but does not support the second service, and network device B skips the second service subfield included in the option field of message A. As shown in Figure 20, the method also includes the following step S505b.

S505b. Network device B skips the second service subfield included in the option field of message A.

Network device B skips the second service subfield, that is, network device B does not process message A according to the second service subfield.

In one embodiment, the option field includes a second length subfield, the second length subfield is used to indicate the length of the second service subfield, and network device B determines the length of the second service subfield according to the second length subfield. , network device B skips the second service subfield according to the length of the second service subfield. In another embodiment, the second service subfield is the last service subfield in the option field, for example, the service subfield indicated by the last service flag bit in the option field, and the second service subfield is not included in the option field. The service length subfield corresponding to the service subfield. Network device B determines the length of the second service subfield according to the length of the option field and the length of the subfields in the option field except the second service subfield. Network device B determines the length of the second service subfield according to the length of the option field. The length of the second service subfield skips the second service subfield.

In an optional embodiment, after network device B processes message A, network device B forwards message A to network device C. Network device C may be the next hop device of network device B, or network device B may forward message A through other networks. The device is connected to network device C. After network device C receives message A, network device C can process message A according to the option field in message A. In addition, network device A may also process message A according to the option field in message A. The process of network device A and network device C processing message A according to the option field can refer to the process of network device B processing message A according to the option field, which will not be described again in this embodiment of the present application.

In an optional embodiment, network device A generates message A including the option field under the instruction of the controller. The controller may be controller 100 shown in FIG. 14 . For example, please refer to FIG. 21 , which shows a flow chart of yet another business processing method provided by an embodiment of the present application. The method includes the following steps S2101 to S2106.

S2101. The controller sends instruction information to network device A. The instruction information is used to instruct network device A to generate The option field includes a first service subfield, a second service subfield, a first length subfield, and a second length subfield. The first service subfield corresponds to the first service, and the second service subfield corresponds to For the second service, the first service is different from the second service. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield.

Optionally, the controller first generates indication information, and then sends the indication information to network device A. For example, the controller sends instruction information to network device A through a border gateway protocol (BGP) message, a network configuration protocol (NETCONF) message, or other private protocol message.

In a specific implementation manner, the instruction information includes configuration information of the option field to instruct network device A to generate a message including the option field. Alternatively, the indication information includes the option field to instruct network device A to generate a message including the option field. Alternatively, the indication information is an identifier of the option field, and network device A includes the configuration information of the option field. The indication information instructs network device A to generate a report including the option field based on the configuration information of the option field in network device A. arts. Alternatively, the indication information is an identification of the option field, the option field is included in the network device A, and the indication information instructs the network device A to generate a message including the option field according to the option field in the network device A. The configuration information of the option field may include the subfields in the option field and the structural information of the option field. The structural information may include the positions of the subfields in the option field. The embodiment of the present application provides This is not a limitation.

S2102. Network device A receives the instruction information sent by the controller.

For example, network device A receives a BGP message, NETCONF message or other private protocol message carrying the indication information sent by the controller, and obtains the indication information from the received message.

S2103. Network device A generates message A including the option field according to the instruction information.

In one embodiment, the indication information includes configuration information of the option field, and network device A generates the option field according to the configuration information of the option field, and then generates message A including the option field.

In another embodiment, the indication information includes the option field, and network device A obtains the option field from the indication information, and then generates message A including the option field.

In yet another embodiment, the indication information includes an identification of the option field, network device A determines the configuration information of the option field in network device A based on the indication information, and network device A generates the option field based on the configuration information of the option field. , and then generate message A including the option field.

In yet another embodiment, the indication information includes an identifier of the option field, and network device A determines the option field in network device A based on the indication information, and then generates message A including the option field.

S2104. Network device A sends message A to network device B.

S2105. Network device B receives message A.

S2106. Network device B processes message A according to the first service subfield included in the option field of message A.

The implementation process of S2103 to S2106 may refer to the implementation process of S501 to S504 mentioned above, and will not be described again here.

The embodiment shown in Figure 21 takes network device A as an example to generate a message A including the option field according to the instructions of the controller. In other embodiments, the option field can be statically configured in network device A, and then the network Device A may generate a message including the option field, which is not limited in the embodiment of this application.

Please refer to Figure 22, which shows a flow chart of yet another business processing method provided by an embodiment of the present application. This method is applied to a business processing system including network device A and network device B. The method includes the following steps S2201 to S2204.

S2201. Network device A generates message A that includes an option field. The option field includes a first service subfield, a second service subfield, and a flow indication subfield. The first service subfield corresponds to the first service, and the second service subfield Corresponding to the second service, the first service is different from the second service. The flow indication subfield is used to indicate the data flow to which message A belongs.

For example, network device A receives the instruction information sent by the controller, and network device A generates message A according to the instruction information. For the structure and related description of this option field, please refer to the related description in S501 and Figures 16 to 18.

S2202. Network device A sends message A to network device B.

S2203. Network device B receives message A.

S2204. Network device B processes message A according to the flow indication subfield and the first service subfield included in the option field of message A.

For the implementation process of S2202 to S2204, please refer to the implementation process of S502 to S504, which will not be described again here.

In an optional embodiment, network device B supports the first service and the second service, and network device B also processes message A according to the flow indication subfield and the second service subfield included in the option field. Alternatively, network device B supports the first service but does not support the second service, and network device B skips the second service subfield included in the option field of message A. Network device B can also forward message A to network device C, and network device C can process message A according to the option field in message A. Network device A may also process message A according to the option field in message A. The process of processing message A according to the option field by network devices A, B, and C can refer to the description in the embodiment shown in Figure 15, and will not be described again here.

In order to facilitate understanding of the technical solution of this application, the business processing method of this application is introduced below with a specific example.

Please refer to Figure 23, which shows a schematic diagram of a service processing method provided by an embodiment of the present application. Figure 23 shows the process of the message being transmitted on the forwarding path P (the forwarding path P is: network device 101->network device 102->network device 103->network device 104->network device 105->network device 106), The network device on the forwarding path P processes the packet as an example. The message includes payload, IPv6 header, HBH and media access control (media access control, MAC) header (it may also include other contents, which will not be described here). The HBH includes an option field, which includes a flow indication subfield, a flag subfield and five service subfields (respectively, the slice service subfield, the SFC service subfield, the APN service subfield, the DetNet service subfield and the IFIT business subfield). The flag subfield includes 8 service flag bits. Among the 8 service flag bits, the third service flag bit arranged from high to low corresponds to the slice service, the fifth service flag bit corresponds to the SFC service, and the sixth service flag bit corresponds to the APN service, the 7th service flag bit corresponds to the DetNet service, and the 8th service flag bit corresponds to the IFIT service. The value in the flag subfield is 00101111.

Referring to Figure 23, the network device 101 as the head node first generates a message including the option field, and then processes the message according to the option field. Specifically, the network device 101 determines that the option field includes the slice service subfield, the SFC service subfield, the APN service subfield, the DetNet service subfield and the IFIT service subfield according to the value in the flag subfield, and determines the slice service subfield. , SFC service subfield, APN service subfield, DetNet service subfield and IFIT service subfield are arranged in order. The network device 101 traverses the five service subfields in the order in which they are arranged, and processes the message according to the flow indication subfield and the five service subfields in sequence. First, the network device 101 traverses to the slice service subfield; if the network device 101 supports the slice service, the network device 101 processes the message according to the flow indication subfield and the slice service subfield; if the network device 101 does not support the slice service, the network device 101 Device 101 skips this slice service subfield. Then, the network device 101 traverses to the SFC service subfield; if the network device 101 supports the SFC service, the network device 101 processes the message according to the flow indication subfield and the SFC service subfield; if the network device 101 does not support SFC service, the network device 101 skips the SFC service subfield. Next, the network device 101 traverses to the APN service subfield; if the network device 101 supports the APN service, the network device 101 processes the message according to the flow indication subfield and the APN service subfield; if the network device 101 does not support the APN service, the network device 101 Device 101 skips this APN service subfield. After that, the network device 101 traverses to the DetNet service subfield; if the network device 101 supports the DetNet service, the network device 101 processes the message according to the flow indication subfield and the DetNet service subfield; if the network device 101 does not support the DetNet service, the network device 101 Device 101 skips this DetNet service subfield. Finally, the network device 101 traverses to the IFIT service subfield; if the network device 101 supports the IFIT service, the network device 101 processes the message according to the flow indication subfield and the IFIT service subfield; if the network device 101 does not support the IFIT service, the network device 101 The device 101 skips the IFIT service subfield, for example, the network device 101 skips the option field.

Network device 101 obtains message 1 after processing the message. Network device 101 sends message 1 to network device 102. Network device 102 processes message 1 according to the option field in message 1. After the network device 102 processes the message 1, the network device 102 obtains the message 2. The network device 102 sends the message 2 to the network device 103. The network device 103 processes the message 2 according to the option field in the message 2. After the network device 103 processes the message 2, the network device 103 obtains the message 3. The network device 103 sends the message 3 to the network device 104. The network device 104 processes the message 3 according to the option field in the message 3. After processing message 3, network device 104 obtains message 4, and network device 104 sends message 4 to network device 105. Network device 105 processes message 4 according to the option field in message 4. After the network device 105 processes the message 4, the network device 105 obtains the message 5. The network device 105 sends the message 5 to the network device 106. The network device 106 processes the message 5 according to the option field in the message 5. The process of the network devices 102 to 106 processing the corresponding message according to the option field is similar to the process of the network device 101 processing the message according to the option field, which will not be described again here. As the tail node, the network device 106 can also remove the option field in the message 5, which is not limited in this application.

The above is an introduction to the method embodiments of the present application. The following introduces embodiments of the device of the present application. The device of the present application can be used to execute the method of the present application. For details not disclosed in the device embodiments of this application, please refer to the method embodiments.

Please refer to Figure 24, which shows a schematic structural diagram of a service processing device 2400 provided by an embodiment of the present application. The service processing device 2400 is applied to network equipment or controllers. For example, the service processing device 2400 is a network device, a functional component in the network device, a controller, or a functional component in the controller. The network device may be a head node, an intermediate node or a tail node, and the network device may be network device A or network device B described in the above method embodiment. As shown in Figure 24, the service processing device 2400 includes a transceiver module 2410 and a processing module 2420.

In the first embodiment, the service processing device 2400 is applied to network device B. The transceiver module 2410 is configured to receive a message including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield, and a second length subfield. The first service subfield corresponds to the first Service, the second service subfield corresponds to the second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the second service subfield length. The processing module 2420 is used to process the message according to the first service subfield.

Optionally, in the first embodiment, the option field also includes a flow indication subfield. The flow indication subfield is used to indicate the data flow to which the message belongs. The processing module 2420 is used to determine the data flow based on the flow indication subfield and the third A service subfield processes the message.

Optionally, in the first embodiment, network device B supports the first service and the second service, and the processing module 2420 is also configured to process the message according to the second service subfield. For example, the processing module 2420 is also configured to process the message according to the flow indication subfield and the second service subfield.

Optionally, in the first embodiment, network device B supports the first service but does not support the second service, and the processing module 2420, Also used to skip the second business subfield.

In the second embodiment, the service processing device 2400 is applied to network equipment A. The processing module 2420 is configured to generate a message including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield and a second length subfield. The first service subfield corresponds to the first Service, the second service subfield corresponds to the second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the second service subfield length. Transceiver module 2410 is used to send the message.

Optionally, in the second embodiment, the option field also includes a flow indication subfield. The flow indication subfield is used to indicate the data flow to which the message belongs. The processing module 2420 is used to determine the flow indication subfield according to the flow indication subfield and The first service subfield processes the message.

Optionally, in the second embodiment, network device A supports the first service and the second service, and the processing module 2420 is also configured to process the message according to the second service subfield. For example, the processing module 2420 is also configured to process the message according to the flow indication subfield and the second service subfield.

Optionally, in the second embodiment, network device A supports the first service but does not support the second service. The processing module 2420 is also configured to skip the second service subfield.

Optionally, in the second embodiment, the transceiver module 2410 is also configured to receive instruction information sent by the controller, where the instruction information is used to instruct network device A to generate a message including an option field.

Correspondingly, the processing module 2420 is configured to generate a message including the option field according to the indication information.

In the third embodiment, the service processing device 2400 is applied to the controller. The transceiver module 2410 is configured to send instruction information to the head node. The instruction information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield, a second service subfield, and a first length subfield. and a second length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the first length subfield is used to indicate the first service subfield Length, the second length subfield is used to indicate the length of the second service subfield.

Optionally, in the third embodiment, the option field also includes a flow indication subfield, and the flow indication subfield is used to indicate the data flow to which the message belongs.

Optionally, in the third embodiment, the indication information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, and the IPv6 extension header includes the option field.

In the fourth embodiment, the business processing device 2400 is applied to the head node, and the transceiver module 2410 is used to receive instruction information sent by the controller. The instruction information is used to instruct the head node to generate a message including an option field. The option field It includes a first service subfield, a second service subfield, a first length subfield and a second length subfield. The first service subfield corresponds to the first service, the second service subfield corresponds to the second service, and the first service and the second length subfield The two services are different. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield. The processing module 2420 is configured to generate a message including the option field according to the indication information.

Optionally, in the fourth embodiment, the indication information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, the IPv6 extension header includes the option field, and the processing module 2420 is used to generate an IPv6 packet including the IPv6 extension header according to the indication information. IPv6 packet with this IPv6 extension header.

In the fifth embodiment, the service processing device 2400 is applied to network device B. Transceiver module 2410, configured to receive a message including an option field. The option field includes a first service subfield, a second service subfield, and a flow indication subfield. The first service subfield corresponds to the first service, and the second service subfield Corresponding to the second business, the first business is different from the second business, the The flow indication subfield is used to indicate the data flow to which the packet belongs. The processing module 2420 is configured to process the message according to the flow indication subfield and the first service subfield.

Optionally, in the fifth embodiment, the option field also includes a first length subfield and a second length subfield. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the first service subfield. To indicate the length of the second service subfield.

Optionally, in the fifth embodiment, network device B supports the first service and the second service, and the processing module 2420 is also configured to process the message according to the flow indication subfield and the second service subfield.

Optionally, in the fifth embodiment, network device B supports the first service but does not support the second service. The processing module 2420 is also configured to skip the second service subfield.

In the sixth embodiment, the service processing device 2400 is applied to network equipment A. The processing module 2420 is configured to generate a message including an option field. The option field includes a first service subfield, a second service subfield, and a flow indication subfield. The first service subfield corresponds to the first service, and the second service subfield Corresponding to the second service, the first service is different from the second service, and the flow indication subfield is used to indicate the data flow to which the message belongs. Transceiver module 2410 is used to send the message.

Optionally, in the sixth embodiment, the option field also includes a first length subfield and a second length subfield. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the first service subfield. To indicate the length of the second service subfield.

Optionally, in the sixth embodiment, network device A supports the first service and the second service, and the processing module 2420 is also configured to process the message according to the flow indication subfield and the second service subfield.

Optionally, in the sixth embodiment, the network device supports the first service but does not support the second service. The processing module 2420 is also configured to skip the second service subfield.

Optionally, in the sixth embodiment, the transceiver module 2410 is also used to receive the instruction information sent by the controller. The instruction information is used to instruct the network device to generate a message including the option field; accordingly, the processing module 2420 uses A message including the option field is generated based on the instruction information.

In the seventh embodiment, the business processing device 2400 is applied to the controller. The transceiver module 2410 is configured to send indication information to the head node. The indication information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield, a second service subfield and a flow indication subfield. The first service subfield corresponds to the first service, and the second service subfield corresponds to the second service. The first service is different from the second service, and the flow indication subfield is used to indicate the data flow to which the message belongs.

Optionally, in the seventh embodiment, the option field also includes a first length subfield and a second length subfield. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the first service subfield. Indicates the length of the second service subfield.

Optionally, in the seventh embodiment, the indication information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, and the IPv6 extension header includes the option field.

In the eighth embodiment, the service processing device 2400 is applied to the head node. The transceiver module 2410 is configured to receive instruction information sent by the controller. The instruction information is used to instruct the head node to generate a message including an option field. The option field includes a first service subfield, a second service subfield and a flow indicator subfield. field, the first service subfield corresponds to the first service, and the second service subfield corresponds to the second service. The first service is different from the second service. The flow indication subfield is used to indicate the data flow to which the message belongs. The processing module 2420 is configured to generate a message including the option field according to the indication information.

Optionally, in the eighth embodiment, the option field also includes a first length subfield and a second length subfield. The first length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the first service subfield. Indicates the length of the second service subfield.

Optionally, in the eighth embodiment, the indication information is used to instruct the head node to generate an IPv6 message including an IPv6 extension header, and the IPv6 extension header includes the option field, and the processing module 2420 is used to generate an IPv6 message including IPv6 packet with this IPv6 extension header.

Optionally, in the above-mentioned first to eighth embodiments, the option field further includes a flag subfield, and the flag subfield is used to indicate that the option field includes a first service subfield and a second service subfield.

Optionally, in the above-mentioned first to eighth embodiments, the flag subfield includes a first service flag bit and a second service flag bit, and the first service flag bit is used to indicate that the option field includes the first service subfield. field, the second service flag bit is used to indicate that the option field includes the second service subfield.

Optionally, in the above-mentioned first to eighth embodiments, the first length subfield corresponds to the first service flag bit, and the second length subfield corresponds to the second service flag bit.

Optionally, in the above-mentioned first to eighth embodiments, the first service flag bit and the second service flag bit are arranged in order, the first length subfield and the second length subfield are arranged in order, and the first length subfield is arranged in order. The arrangement order of the field and the second length subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit.

Optionally, in the above-mentioned first to eighth embodiments, the first service flag bit and the second service flag bit are arranged in order, the first service subfield and the second service subfield are arranged in order, and the first service subfield is arranged in order. The arrangement order of the field and the second service subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit.

Optionally, in the above-mentioned first to eighth embodiments, the flag subfield includes m service flag bits, the m service flag bits correspond to m services one-to-one, and the m services are different from each other. Each of the m service flag bits is used to indicate whether the option field includes the service subfield of the service corresponding to each service flag bit. The m service flag bits include the first service flag bit and the second service Flag bit, the m services include the first service and the second service, m≥2, and m is an integer.

Optionally, in the above-mentioned first to eighth embodiments, the option field includes k service length subfields, and the k service length subfields are consistent with k service flag bits among the m service flag bits. One correspondence, 1 ≤ k ≤ m, and k is an integer. When any one of the k service flag bits indicates that the option field includes the service subfield of the service corresponding to any one of the service flag bits, any one of the service flag bits shall The service length subfield corresponding to the service flag bit is used to indicate the length of the service subfield. The k service length subfields include the first length subfield and the second length subfield. The k service flag bits include the first service flag. bit and the second business flag bit. In one implementation, k=m, the k service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, the first service subfield, the third service subfield, and the third service flag bit. The second service subfield and the third service subfield are arranged in sequence. The third service flag bit and the third service subfield both correspond to the third service. The first service, the second service and the third service are different from each other. The m services include Third service; the k service length subfields also include a third length subfield, and the third length subfield is used to indicate the length of the third service subfield. In another implementation manner, k=m-1, the m service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, and the first service subfield field, the second service subfield and the third service subfield are arranged in order. The third service flag bit and the third service subfield both correspond to the third service. The first service, the second service and the third service are different from each other. The m services include the third service; the k service flag bits do not include the third service flag bit, and the length of the third service subfield is determined according to the length of the option field, the length of the first service subfield, and the length of the second service subfield. .

Optionally, in the above-mentioned first to eighth embodiments, the k service length subfields are adjacent, and the flag subfield is adjacent to the k service length subfields.

Optionally, in the above-mentioned first to eighth embodiments, the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order, and the flag subfield also includes a flow flag bit, the The flow flag bit is used to indicate that the option field includes the flow indication subfield.

Optionally, in the above-mentioned first to eighth embodiments, the flow indication subfield, the flag subfield, the first service subfield and the second service subfield are arranged in order.

Optionally, in the above-mentioned first to eighth embodiments, the first length subfield is in the first service subfield, and the second length subfield is in the second service subfield. The first service subfield also includes a first type space, which is used to indicate the first service; the second service subfield also includes a second type space, which is used to indicate the second service. Optionally, the first service subfield also includes a first data space, and the first data space is used to carry the service information of the first service; the second service subfield also includes a second data space, and the second data space is used to indicate the first service. 2. Business information of the business. Optionally, the flow indication subfield, the first service subfield and the second service subfield are arranged in order.

Optionally, in the above-mentioned first to eighth embodiments, the length of the first service subfield is 4×p bytes, the length of the second service subfield is 4×q bytes, and p and q are both positive. integer.

Optionally, in the above-mentioned first to eighth embodiments, the packet is an IPv6 packet, the packet includes an IPv6 extension header, and the IPv6 extension header includes the option field. The IPv6 extension header includes either HBH or DOH.

Optionally, in the above-mentioned first to eighth embodiments, the first service includes any one of the slicing service, the flow detection service, the APN service, the DetNet service, the SFC service and the path segment service; or, the second service Including any one of slicing services, flow detection services, APN services, DetNet services, SFC services and path segment services.

It should be understood that the service processing device provided by the embodiment of the present application can also be implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD). The above-mentioned PLD can be a complex programmable logical device (CPLD), a field-programmable gate array (FPGA), a general array logic (generic array logic, GAL) or any combination thereof. The business processing method provided in the above method embodiment can also be implemented through software. When the business processing method is implemented through software, each module in the business processing device can also be a software module.

Please refer to Figure 25, which shows a schematic structural diagram of another service processing device 2500 provided by an embodiment of the present application. The service processing device 2500 is a network device or a functional component in the network device. The network device may be network device A, network device B or the head node in the above method embodiment. The business processing device 2500 includes a main control board 2510, an interface board 2530 and an interface board 2540. In the case of multiple interface boards, a switching network board (not shown in Figure 25) may be included. The switching network board is used to complete data exchange between interface boards (interface boards are also called line cards or service boards).

The main control board 2510 is used to complete functions such as system management, equipment maintenance, and protocol processing. The interface board 2530 and the interface board 2540 are used to provide various service interfaces (for example, POS interface, GE interface, ATM interface, etc.) and implement packet forwarding. There are three main types of functional units on the main control board 2510: system management control unit, system clock unit and system maintenance unit. The main control board 2510, the interface board 2530 and the interface board 2540 are connected to the system backplane through a system bus to achieve intercommunication. Interface board 2530 includes one or more processors 2531. The processor 2531 is used to control and manage the interface board 2530 and communicate with the central processor 2512 on the main control board 2510 . The memory 2532 on the interface board 2530 is used to store forwarding tables, local configuration information, etc. If the service processing device 2500 is the aforementioned network device A, the memory 2532 is also used to store the option field or the configuration information of the option field, the processor 2531 is used to generate a message including the option field, and the processor 2531 is used to The message is processed according to this option field. If the service processing device 2500 is the aforementioned network device B, the processor 2531 processes the message according to the option field in the message. As shown in Figure 25, the main control board 2510 includes a memory 2514. The memory 2514 can also be used to store local configuration information about services, option fields or configuration information of option fields, etc. The interface board 2530 includes one or more network interfaces 2533 for sending and receiving messages, and the processor 2531 processes the message according to the option field in the message received by the network interface 2533.

As shown in Figure 25, this embodiment includes multiple interface boards and adopts a distributed forwarding mechanism. Under this mechanism, the operations on the interface board 2540 are basically similar to the operations on the interface board 2530. For example, the interface board 2540 includes one or more network interfaces 2543 for sending and receiving messages, a memory 2542 for storing forwarding tables, local configuration information, etc., and a processor 2541 for controlling the interface board 2540 Manage and communicate with the central processor 2512 on the main control board 2510. For the sake of simplicity, the interface board 2540 will not be described in detail here.

It can be understood that the processor 2531 in the interface board 2530 and/or the processor 2541 in the interface board 2540 in Figure 25 can be dedicated hardware or chips, such as a network processor or an application specific integrated circuit, to implement the above functions. The implementation method is the so-called forwarding plane using dedicated hardware or chip processing. In other embodiments, the processor 2531 in the interface board 2530 and/or the processor 2541 in the interface board 2540 can also use a general-purpose processor, such as a general-purpose central processing unit (CPU) to implement the above. described function.

In addition, it should be pointed out that there may be one or more main control boards, and when there are multiple main control boards, they can include the main main control board and the 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. In the case of multiple interface boards, the multiple interface boards can communicate with each other through one or more switching network boards. When there are multiple interface boards, they can jointly achieve load sharing and redundant backup. Under the centralized forwarding architecture, the network equipment does not need a switching network board, and the interface board is responsible for processing the business data of the entire system. Under the distributed forwarding architecture, the network equipment includes multiple interface boards, which can realize data exchange between multiple interface boards through the switching network board, providing large-capacity data exchange and processing capabilities. Therefore, the data access and processing capabilities of network equipment with a distributed architecture are greater than those with a centralized architecture. The specific architecture used depends on the network deployment scenario and is not limited here.

In specific implementations, memory 2532 and/or memory 2542 may be read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory, CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disks or other magnetic storage devices, or can be used to carry or store instructions or data structures. The desired program code and any other medium capable of being accessed by a computer, without limitation. The memory 2532 may exist independently and be connected to the processor 2531 through a communication bus, or may be integrated with the processor 2531. The memory 2542 may exist independently and be connected to the processor 2541 through a communication bus, or may be integrated with the processor 2541.

The memory 2532 is used to store program codes, and is controlled by the processor 2531 to execute part or all of the steps of the business processing method provided by the above embodiments. The program code may include one or more software modules, and the one or more software modules may be the functional modules provided in the embodiment shown in FIG. 24 . The memory 2542 can also be used to store program codes, and the execution is controlled by the processor 2541 to execute part or all of the steps of the business processing method provided by the above embodiments. Similarly, the memory 2514 can also be used to store program codes, and the central processor 2512 controls the execution. to execute part or all of the steps of the business processing method provided by the above embodiment.

In a specific implementation, the network interface 2533 and the network interface 2543 can be any transceiver-like device used to communicate with other devices or communication networks, such as Ethernet, radio access network (radio access network, RAN), Wireless local area networks (WLAN), etc.

Please refer to Figure 26, which shows a schematic structural diagram of a business processing system 2600 provided by an embodiment of the present application. The business processing system 2600 includes a first network device 2610 and a second network device 2620.

In the first embodiment: the first network device 2610 is used to generate a message including an option field and send the message to the second network device 2620. The option field includes a first service subfield and a second service subfield. , the first length subfield and the second length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, the first length subfield is used to indicate The length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield; the second network device 2620 is used to receive the message and process the message according to the first service subfield. Optionally, the business processing system 2600 also includes: a third network device 2630. The second network device 2620 is also used to send the message to the third network device 2630; the third network device 2630 is used to receive the message, and The message is processed according to the second service subfield.

In another embodiment: the first network device 2610 is configured to generate a message including an option field and send the message to the second network device 2620. The option field includes a first service subfield, a second service subfield and The flow indication subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the flow indication subfield is used to indicate the data flow to which the message belongs; The second network device 2620 is configured to receive the message and process the message according to the flow indication subfield and the first service subfield. Optionally, the business processing system 2600 also includes: a third network device 2630, the second network device 2620 is also used to send the message to the third network device 2630; the third network device 2630 is used to receive the message, and according to The flow indication subfield and the second service subfield process the message.

Optionally, the business processing system 2600 also includes: a controller 2640. The controller 2640 is configured to send instruction information to the first network device 2610. The instruction information is used to instruct the first network device 2610 to generate a message including the option field. ; Correspondingly, the first network device 2610 is configured to generate a message including the option field according to the indication information.

Optionally, the first network device 2610 is the head node on the forwarding path of the message, the second network device 2620 is an intermediate node on the forwarding path, and the third network device 2630 is an intermediate node on the forwarding path or tail node. For example, the first network device 2610 is the network device A described in the above method embodiment, the second network device 2620 is the network device B described in the above method embodiment, and the third network device 2630 is the network device B described in the above method embodiment. The network device C.

For the structure of the option field and the implementation process of the first network device 2610, the second network device 2620, and the third network device 2630 processing the message including the option field according to the option field, please refer to the above method embodiment, and will not be described again here.

The embodiment of the present application provides a data structure, which includes the option field provided by the above-mentioned embodiment of the present application. For descriptions of this option field, please refer to the relevant descriptions in the above embodiments of this application, and will not be described again here.

For example, the option field may be an option field as shown in any one of Figures 16 to 18.

Embodiments of the present application provide a computer-readable storage medium. A computer program is stored in the computer-readable storage medium. The computer program is executed (for example, by a business processing device, a network device, a controller, one or more processes When the server is executed), all or part of the steps of the business processing method provided by the above method embodiment are implemented.

Embodiments of the present application provide a computer program product. The computer program product includes a program or code, and the program or code is executed (for example, executed by a business processing device, a network device, a controller, one or more processors, etc.) At this time, all or part of the steps of the business processing method provided by the above method embodiment are implemented.

Embodiments of the present application provide a chip that includes programmable logic circuits and/or program instructions. When the chip is run, it is used to implement all or part of the steps of the business processing method provided by the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product including one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another, for example, the computer instructions may be transferred from a website, computer, server, or data The center transmits to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, data center, or the like that includes one or more available media integrated therein. The available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media, or semiconductor media (eg, solid state drives), etc.

It should be understood that “at least one” in this application refers to one or more, and “plurality” refers to two or more. "At least two" means two or more. In this application, unless otherwise stated, the symbol "/" means or, for example, A/B can mean A or B. The term "and/or" in this application is only an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist simultaneously, alone There are three situations B. In addition, in order to facilitate clear description, in this application, words such as “first”, “second”, “third” and “fourth” are used to distinguish the same or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as "first", "second", "third", and "fourth" do not limit the number or execution order.

Different types of embodiments such as method embodiments and device embodiments provided in the embodiments of this application can all refer to each other, and the embodiments of this application do not limit this. The sequence of operations of the method embodiments provided by the embodiments of this application can be adjusted appropriately, and the operations can also be increased or decreased in response to the situation. Any person familiar with the technical field can easily think of changing methods within the technical scope disclosed in this application. , are all covered by the protection scope of this application, and therefore will not be described again.

In the corresponding embodiments provided in this application, the disclosed devices can be implemented in other configurations. For example, the device embodiments described above are only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into Another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in electrical or other forms.

Modules described as separate components may or may not be physically separate. Components described as modules may or may not be physical units that may be located in one place or distributed across multiple devices (such as network devices). . Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The above are only exemplary embodiments of the present application, and the protection scope of the present application is not limited thereto. Any familiar Those skilled in the art can easily imagine that various equivalent modifications or substitutions should be included within the protection scope of this application within the technical scope disclosed in this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A business processing method, characterized in that the method includes:

The network device receives a message including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield, and a second length subfield. The first service subfield corresponds to the first service. , the second service subfield corresponds to a second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the second The length subfield is used to indicate the length of the second service subfield;

The network device processes the message according to the first service subfield.
A business processing method, characterized in that the method includes:

The network device generates a message including an option field. The option field includes a first service subfield, a second service subfield, a first length subfield, and a second length subfield. The first service subfield corresponds to the first service. , the second service subfield corresponds to a second service, the first service is different from the second service, the first length subfield is used to indicate the length of the first service subfield, and the second The length subfield is used to indicate the length of the second service subfield;

The network device sends the message.
The method according to claim 1 or 2, characterized in that the option field further includes a flag subfield, the flag subfield is used to indicate that the option field includes the first service subfield and the second service subfield. Business subfield.
The method according to claim 3, characterized in that the flag subfield includes a first service flag bit and a second service flag bit, and the first service flag bit is used to indicate that the option field includes the third service flag bit. A service subfield, the second service flag bit is used to indicate that the option field includes the second service subfield.
The method according to claim 4, characterized in that the first length subfield corresponds to the first service flag bit, and the second length subfield corresponds to the second service flag bit.
The method according to claim 5, characterized in that the first service flag bit and the second service flag bit are arranged in order, and the first length subfield and the second length subfield are arranged in order. , the arrangement order of the first length subfield and the second length subfield corresponds to the arrangement order of the first service flag bit and the second service flag bit.
The method according to any one of claims 4 to 6, characterized in that the first service flag bit and the second service flag bit are arranged in order, and the first service subfield and the second service flag bit are arranged in order. The subfields are arranged in order, and the order in which the first service subfield and the second service subfield are arranged corresponds to the order in which the first service flag bit and the second service flag bit are arranged.
The method according to any one of claims 4 to 7, characterized in that the flag subfield includes m service flag bits, the m service flag bits correspond to m services one-to-one, and the m services are mutually exclusive. are not the same, each service flag bit among the m service flag bits is used to indicate whether the option field includes the service corresponding to each service flag bit. The service subfield, the m service flag bits include the first service flag bit and the second service flag bit, the m services include the first service and the second service, m≥2 , and m is an integer.
The method according to claim 8, characterized in that the option field includes k service length subfields, and the k service length subfields correspond to k service flag bits among the m service flag bits. Correspondingly, 1≤k≤m, and k is an integer. When any one of the k service flag bits indicates that the option field includes the service subfield of the service corresponding to any one of the service flag bits, the The service length subfield corresponding to any of the service flag bits is used to indicate the length of the service subfield, and the k service length subfields include the first length subfield and the second length subfield, and the The k service flag bits include the first service flag bit and the second service flag bit.
The method according to claim 9, characterized in that, k=m,

The k service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, the first service subfield, the second service subfield The subfields and the third service subfield are arranged in order, the third service flag bit and the third service subfield all correspond to the third service, the first service, the second service and the third service The services are different from each other, and the m services include the third service;

The k service length subfields also include a third length subfield, and the third length subfield is used to indicate the length of the third service subfield.
The method according to claim 9, characterized in that, k=m-1,

The m service flag bits also include a third service flag bit, and the third service flag bit is used to indicate that the option field also includes a third service subfield, the first service subfield, the second service subfield, and the third service flag bit. The subfields and the third service subfield are arranged in sequence, the third service flag bit and the third service subfield all correspond to the third service, the first service, the second service and the third service The services are different from each other, and the m services include the third service;

The k service flag bits do not include the third service flag bit, and the length of the third service subfield is based on the length of the option field, the length of the first service subfield and the second service subfield. The length of the field is determined.
The method according to any one of claims 9 to 11, characterized in that,

The k service length subfields are adjacent, and the flag subfield is adjacent to the k service length subfields.
The method according to any one of claims 3 to 12, characterized in that the option field further includes a flow indication subfield, the flow indication subfield is used to indicate the data flow to which the message belongs, and the network The device processes the message according to the first service subfield, including:

The network device processes the message according to the flow indication subfield and the first service subfield.
The method according to claim 13, characterized in that the flag subfield, the flow indication subfield, the first service subfield and the second service subfield are arranged in order, and the flag subfield further A flow flag bit is included, and the flow flag bit is used to indicate that the option field includes the flow indication subfield.
The method according to claim 13, characterized in that the flow indication subfield, the flag subfield, The first service subfield and the second service subfield are arranged in sequence.
The method according to claim 1 or 2, characterized in that the first length subfield is in the first service subfield, and the second length subfield is in the second service subfield.
The method according to claim 16, characterized in that:

The first service subfield also includes a first type space, and the first type space is used to indicate the first service;

The second service subfield also includes a second type space, and the second type space is used to indicate the second service.
The method according to claim 16 or 17, characterized in that,

The first service subfield also includes a first data space, and the first data space is used to carry service information of the first service;

The second service subfield also includes a second data space, and the second data space is used to indicate service information of the second service.
The method according to any one of claims 16 to 18, characterized in that,

The option field also includes a flow indication subfield. The flow indication subfield is used to indicate the data flow to which the message belongs. The network device processes the message according to the first service subfield, including:

The network device processes the message according to the flow indication subfield and the first service subfield.
The method according to claim 19, characterized in that:

The flow indication subfield, the first service subfield and the second service subfield are arranged in sequence.
The method according to any one of claims 1 to 20, characterized in that the length of the first service subfield is 4×p bytes, and the length of the second service subfield is 4×q bytes, Both p and q are positive integers.
The method according to any one of claims 1 to 21, characterized in that the message is an Internet Protocol version 6 IPv6 message, the message includes an IPv6 extension header, and the IPv6 extension header includes the option field.
The method according to claim 22, characterized in that:

The IPv6 extension header includes any one of a hop-by-hop header HBH and a destination option header DOH.
The method according to any one of claims 1 to 23, characterized in that,

The first service includes any one of a slicing service, a flow detection service, an application aware network APN service, a deterministic network DetNet service, a service function link SFC service and a path segment service; or the second service includes a slicing service , any one of the flow detection service, APN service, DetNet service, SFC service and path segment service.
The method according to any one of claims 1 and 3 to 24, characterized in that the network device supports the first service and the second service, and the method further includes:

The network device processes the message according to the second service subfield.
The method according to any one of claims 1 and 3 to 24, characterized in that the network device supports the first service but does not support the second service, and the method further includes:

The network device skips the second service subfield.
The method of claim 2, further comprising:

The network device receives instruction information sent by the controller, where the instruction information is used to instruct the network device to generate a message including the option field;

The network device generating a message including an option field includes: the network device generating the message including the option field according to the indication information.
A business processing device, characterized in that it includes: a transceiver module and a processing module;

The transceiver module is used to perform transceiver operations in the method as described in any one of claims 1 to 27, and the processing module is used to perform the method as described in any one of claims 1 to 27. Operations other than send and receive operations.
A business processing system, characterized by including a first network device and a second network device;

The first network device is configured to generate a message including an option field, and send the message to the second network device. The option field includes a first service subfield, a second service subfield, a first service subfield, and a first service subfield. A length subfield and a second length subfield, the first service subfield corresponds to the first service, the second service subfield corresponds to the second service, the first service is different from the second service, and the third service A length subfield is used to indicate the length of the first service subfield, and the second length subfield is used to indicate the length of the second service subfield;

The second network device is configured to receive the message and process the message according to the first service subfield.
The system according to claim 29, characterized in that the system further includes a third network device;

The second network device is also configured to send the message to the third network device;

The third network device is configured to receive the message and process the message according to the second service subfield.
The system according to claim 29 or 30, characterized in that the system further includes a controller;

The controller is configured to send instruction information to the first network device, where the instruction information is used to instruct the first network device to generate a message including the option field;

The first network device is configured to generate the message including the option field according to the indication information.
The system according to any one of claims 29 to 31, characterized in that,

The first network device is the head node on the forwarding path of the message;

The second network device is an intermediate node or a tail node on the forwarding path.
A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method according to any one of claims 1 to 27 is implemented.
A computer program product, characterized in that the computer program product includes a program or code, and when the program or code is executed, the method according to any one of claims 1 to 27 is implemented.
A chip, characterized in that the chip includes programmable logic circuits and/or program instructions, and when the chip is running, the method according to any one of claims 1 to 27 is implemented.