WO2023083175A1

WO2023083175A1 - Packet transmission method and communication apparatus

Info

Publication number: WO2023083175A1
Application number: PCT/CN2022/130613
Authority: WO
Inventors: 徐丽; 周勇波; 陈井凤; 杨大超; 孙寅龙; 李日欣; 钟其文
Original assignee: 华为技术有限公司
Priority date: 2021-11-11
Filing date: 2022-11-08
Publication date: 2023-05-19
Also published as: CN116112452A

Abstract

The present application provides a packet transmission method and a communication apparatus, related to the technical field of communications, and capable of improving port resource utilization and flexibly sending a packet. The method comprises: a first network device determining a first packet and a second packet, the first packet comprising data of a common service, and the second packet comprising data of a hard isolation service; then, the first network device sending the first packet and the second packet in the same period by means of a first port of the first network device.

Description

Message transmission method and communication device

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on November 11, 2021, with application number 202111332727.6, and application title "Message Transmission Method and Communication Device", the entire contents of which are incorporated by reference in this application middle.

technical field

The present application relates to the technical field of communication, and in particular to a message transmission method and a communication device.

Background technique

Store-and-forward is a forwarding technology that has been used by standard Ethernet since its birth. It means that each receiving-side device in the network completely receives and stores the message, then performs table lookup processing on it, and forwards it after finding the outgoing port. . Channel forwarding refers to forwarding according to the mapping relationship of service ingress and egress ports, and forwarding according to the configuration table, which is a forwarding technology based on code blocks. Store-and-forward and channel-forward are performed on different ports, and the two ports are independent and incompatible with each other.

However, the number of packets to be transmitted in store-and-forward and channel-forwarding may be different. There is a phenomenon that one port is idle, and the packets of the other port cannot be sent in time. The port utilization rate is poor, and packets cannot be transmitted flexibly.

Contents of the invention

The present application provides a message transmission method and a communication device, which can improve port resource utilization and flexibly send messages.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

In a first aspect, the embodiment of the present application provides a message transmission method, and the execution body of the method may be a first network device, or may be a chip applied in the first network device. The description below takes the execution subject as an example of the first network device. The method includes: the first network device determines the first packet and the second packet. Wherein, the first message includes data of common services, and the second message includes data of hard-isolated services. Then, the first network device sends the first packet and the second packet in the same cycle through its first port.

In this way, even if the numbers of the first message and the second message change dynamically, since the two messages are sent through the same port, when the number of the second message decreases or no second message is sent , the first network device can send more first packets, or, conversely, when the number of first packets decreases or no first packets are sent, if the number of second packets is large, The first network device can send more second packets, avoid idle ports, improve port utilization, and flexibly transmit packets.

In a possible design, the first packet includes a first field. Wherein, the first field indicates the type of the first packet, for example, indicates that the type of the first packet is a common packet. The second packet includes a second field. Wherein, the second field indicates the type of the second message, such as indicating that the type of the second message is a hard-isolated message, so that the receiving end device, such as the second network device, determines the received message through the first field or the second field The type of the message.

In a possible design, the first field is carried in the preamble part of the first packet, or the first field is carried in the overhead OH field of the first packet.

In a possible design, the second field is carried in the preamble part of the second packet, or the second field is carried in the OH field of the second packet.

In a possible design, the first packet further includes a first identifier. Wherein, the first identifier is used to identify the first client, and the message of the first client includes the first message.

That is to say, the first identifier indicates which client's message the first message is.

In a possible design, the first data unit includes a first code block. Wherein, the first data unit is one or more data units in the second message, the first code block is a code block after encoding the service data of the target customer, and the target customer is a second customer among at least one second customer , the data in the second message includes service data of all the second customers in the at least one second customer.

That is to say, the second packet carries at least one data unit, and one or more data units in the at least one data unit carry service data of a second client.

In a possible design, the packet transmission method in the embodiment of the present application further includes: the first network device determines the first code block in the first data unit according to the first information. Wherein, the first information indicates the corresponding relationship between the first data unit and the target client, so that the first network device encapsulates the second packet.

In a possible design, the encoded lengths of the first packet and the second packet are the same, for example, the payloads of the first packet and the second packet carry the same number of code blocks.

In a possible design, the encoding includes at least one of the following: 64B/66B, 66B/65B, or 64B/65B.

In a possible design, the first network device sends the first message and the second message in the same period through its first port, including: the first network device transmits the first message through the first port according to the second information The first packet is sent in a time unit, and the second packet is sent in a second time unit. Wherein, the second information indicates the positions of the first time unit and the second time unit in the cycle.

That is to say, the position of each time unit in the cycle is preconfigured, and the first network device only needs to transmit the first packet and the second packet according to the preconfigured time unit position.

In a possible design, the first network device sends the first message and the second message in the same period through its first port, including: the first network device transmits the first message and the second message according to the second information and the third information through the first The port sends the first packet in the unoccupied first time unit, and sends the second packet in the unoccupied second time unit. Wherein, the second information indicates the configured quantity of the first time unit and the second time unit in the period, and the third information indicates the unoccupied quantity of the first time unit and the second time unit in the period.

That is to say, the number of each time unit in the period is preconfigured, but the position is not fixed, and the first network device transmits the first packet and the second packet according to the preconfigured number of time units. For example, at a certain moment, only the encapsulation of the first packet is completed, and the number of time units corresponding to the client in the first packet is greater than zero, then the first packet is sent. For another example, at a certain moment, only the encapsulation of the second packet is completed, and the number of time units corresponding to the client in the second packet is greater than zero, the second packet is sent to improve the flexibility of packet transmission.

In a possible design, the second time unit where the second packet is located is earlier than the first time unit where the first packet is located. The generation time of the second packet is the same as that of the first packet, or the generation time of the second packet is earlier than the generation time of the first packet.

That is to say, if the encapsulation of the second packet is completed, even if the encapsulation of the first packet is also completed, the first network device will send the second packet first, and then send the first packet, so as to ensure the delay requirement of the hard isolation service.

In a possible design, the second time unit where the second message is located is later than the first time unit where the first message is located, and the generation time of the second message is later than the generation time of the first message. That is to say, if the encapsulation of the second packet is not completed but the encapsulation of the first packet is completed, the first network device first sends the first packet and then sends the second packet, so as to avoid idle ports.

In a possible design, the second information is determined based on the service bandwidth of the first client and the service bandwidth of the second client. Wherein, the message of the first client includes the first message, and the data in the second message includes the service data of the second client. For example, the greater the service bandwidth of the first client, the greater the number of first time units correspondingly. Similarly, the greater the service bandwidth of the second client, the greater the number of second time units correspondingly.

In a possible design, the packet transmission method in this embodiment of the present application further includes: the first network device determines the third packet. Wherein, the third message is a message of the third client, and the type of the third message is the same as that of the first message. The first network device periodically sends the third packet through its first port. Wherein, the third message is transmitted through a third time unit, the third time unit is configured to transmit the message of the first client, and the third time unit is in an idle state, and the message of the first client includes the first message.

That is to say, for the time unit for transmitting ordinary messages, even if a certain time unit (some), such as the third time unit, is configured to transmit the first client’s message, if the first client’s message is not encapsulated , or when the first client has no message to transmit, the third time unit can also transmit messages from other clients, such as a message from the third client, so as to implement statistical multiplexing and improve resource utilization.

In a second aspect, the embodiment of the present application provides a packet transmission method, and the execution subject of the method may be the second network device, or may be a chip applied in the second network device. The following description is made by taking the execution subject as an example of the second network device. The method includes: the second network device receives the first message and the second message in the same period through its second port. Wherein, the first message includes data of common services, and the second message includes data of hard-isolated services. Then, the second network device forwards the service data in the first message according to the type of the first message, and forwards the service data in the second message according to the type of the second message.

In a possible design, the second network device forwarding the service data in the first packet according to the type of the first packet includes: the second network device determining a store-and-forward mode according to the type of the first packet. The second network device forwards the service data in the first packet in a store-and-forward manner.

That is to say, the second network device forwards the service data in the first packet in a store-and-forward manner.

In a possible design, the first packet includes a first field. Wherein, the first field indicates the type of the first packet.

In a possible design, the second network device forwards the service data in the second message according to the type of the second message, including: the second network device determines the channel forwarding mode according to the type of the second message, and the second The second network device forwards the service data of each second customer in the at least one second customer in a channel forwarding manner. Wherein, the data in the second message includes service data of all second customers in at least one second customer.

That is to say, the second network device forwards the service data in the second packet in a channel forwarding manner.

In a possible design, the second packet includes a second field. Wherein, the second field indicates the type of the second packet.

In the third aspect, the embodiment of the present application provides a communication device, which may be the first network device in the above first aspect or any possible design of the first aspect, or a chip that realizes the functions of the above first network device The communication device includes corresponding modules, units, or means (means) for implementing the above method, and the modules, units, or means can be implemented by hardware, software, or by executing corresponding software through hardware. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a processing unit and a sending unit. Wherein, the processing unit is configured to determine the first packet and the second packet. Wherein, the first message includes data of common services, and the second message includes data of hard-isolated services. The sending unit is configured to send the first message and the second message in the same cycle through its first port.

In a possible design, the first packet includes a first field. Wherein, the first field indicates the type of the first packet, for example, indicates that the type of the first packet is a common packet. The second packet includes a second field. Wherein, the second field indicates the type of the second packet.

In a possible design, the first data unit includes a first code block. Wherein, the first data unit is one or more data units in the second packet. The first code block is a code block after encoding service data of a target customer, and the target customer is a second customer among at least one second customer. The data in the second message includes service data of all the second clients in the at least one second client.

In a possible design, the processing unit is further configured to determine the first code block in the first data unit according to the first information. Wherein, the first information indicates the corresponding relationship between the first data unit and the target customer.

In a possible design, the encoded lengths of the first packet and the second packet are the same.

In a possible design, the sending unit is configured to send the first message and the second message in the same period through its first port, specifically including: according to the second information, sending the first message through the first port at the first time unit The first packet is sent at the time unit, and the second packet is sent at the second time unit. Wherein, the second information indicates the positions of the first time unit and the second time unit in the cycle.

In a possible design, the sending unit is configured to send the first message and the second message in the same cycle through its first port, specifically including: according to the second information and the third information, through the first port at The first message is sent on the unoccupied first time unit, and the second message is sent on the unoccupied second time unit. Wherein, the second information indicates the configured quantity of the first time unit and the second time unit in the period, and the third information indicates the unoccupied quantity of the first time unit and the second time unit in the period.

In a possible design, the second time unit where the second message is located is later than the first time unit where the first message is located, and the generation time of the second message is later than the generation time of the first message.

In a possible design, the second information is determined based on the service bandwidth of the first client and the service bandwidth of the second client. Wherein, the data in the first message includes the service data of the first customer, and the data in the second message includes the service data of the second customer.

In a possible design, the processing unit is also configured to determine the third packet. Wherein, the third message is a message of the third client, and the type of the third message is the same as that of the first message. The sending unit is further configured to send the third message in a period through the first port. Wherein, the third message is transmitted through a third time unit, the third time unit is configured to transmit the message of the first client, and the third time unit is in an idle state. The messages of the first client include the first message.

In the fourth aspect, the embodiment of the present application provides a communication device, which may be the second network device in the above-mentioned second aspect or any possible design of the second aspect, or a chip that realizes the functions of the above-mentioned second network device The communication device includes corresponding modules, units, or means (means) for implementing the above method, and the modules, units, or means can be implemented by hardware, software, or by executing corresponding software through hardware. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a receiving unit, a processing unit and a sending unit. Wherein, the receiving unit is configured to receive the first message and the second message in the same cycle through its second port. Wherein, the first message includes data of common services, and the second message includes data of hard-isolated services. The sending unit is configured to forward the service data in the first message according to the type of the first message, and forward the service data in the second message according to the type of the second message.

In a possible design, the sending unit is configured to forward the service data in the first message according to the type of the first message, and specifically includes: a processing unit configured to determine the storage and forwarding according to the type of the first message Way. A sending unit, configured to forward the service data in the first message in a store-and-forward manner.

In a possible design, the sending unit is configured to forward the service data in the second message according to the type of the second message, including: a processing unit configured to determine the channel forwarding mode according to the type of the second message . The sending unit is configured to forward the service data of each second customer in the at least one second customer in a channel forwarding manner. Wherein, the data in the second message includes service data of all second customers in at least one second customer.

In the fifth aspect, the embodiment of the present application provides a communication device, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device performs any of the above aspects or any In one aspect, a method performed by the first network device in any possible design. The communication device may be the first network device in the first aspect or any possible design of the first aspect, or a chip implementing the functions of the first network device above.

In a sixth aspect, an embodiment of the present application provides a communication device, including: a processor; the processor is coupled to a memory, and is used to read and execute instructions in the memory, so that the communication device performs any of the above aspects Or a method executed by the first network device in any possible design of any aspect. The communication device may be the first network device in the first aspect or any possible design of the first aspect, or a chip implementing the functions of the first network device above.

In a seventh aspect, the embodiment of the present application provides a chip, including a processing circuit and an input/output interface. Wherein, the input and output interface is used to communicate with modules other than the chip, for example, the chip may be a chip that implements the function of the first network device in the first aspect or any possible design of the first aspect. The processing circuit is used to run computer programs or instructions to implement the method in the above first aspect or any possible design of the first aspect.

In an eighth aspect, the embodiment of the present application provides a communication device, including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device performs any of the above aspects or any In one aspect, a method performed by the second network device in any possible design. The communication device may be the second network device in the above-mentioned second aspect or any possible design of the second aspect, or a chip that implements the functions of the above-mentioned second network device.

In a ninth aspect, an embodiment of the present application provides a communication device, including: a processor; the processor is coupled to a memory, and is used to read and execute instructions in the memory, so that the communication device performs any of the above aspects Or a method executed by the second network device in any possible design of any aspect. The communication device may be the second network device in the above-mentioned second aspect or any possible design of the second aspect, or a chip that implements the functions of the above-mentioned second network device.

In a tenth aspect, the embodiment of the present application provides a chip, including a processing circuit and an input/output interface. Wherein, the input and output interface is used to communicate with modules other than the chip, for example, the chip may be a chip that implements the function of the second network device in the second aspect or any possible design of the second aspect. The processing circuit is used to run computer programs or instructions to implement the method in the above second aspect or any possible design of the second aspect.

In the eleventh aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores instructions, and when it is run on a computer, the computer can execute any one of the above-mentioned aspects. method.

In a twelfth aspect, the embodiment of the present application provides a computer program product containing instructions, which when run on a computer, enables the computer to execute the method in any one of the above aspects.

In a thirteenth aspect, the embodiment of the present application provides a circuit system, the circuit system includes a processing circuit, and the processing circuit is configured to execute the method according to any one of the foregoing aspects.

In a fourteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes the first network device and the second network device in any one of the foregoing aspects.

Wherein, for the technical effects brought about by any one of the designs from the third aspect to the fourteenth aspect, reference may be made to the beneficial effects in the corresponding methods provided above, which will not be repeated here.

Description of drawings

Fig. 1 is a kind of network architecture diagram that the embodiment of the present application applies;

Figure 2a is a schematic diagram of a coding format provided by the embodiment of the present application;

Fig. 2b is a schematic diagram of another encoding format provided by the embodiment of the present application;

FIG. 3a is a schematic diagram of a communication scenario provided by an embodiment of the present application;

FIG. 3b is a schematic diagram of another communication scenario provided by the embodiment of the present application;

FIG. 4 is a schematic diagram of a port form provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of a message transmission method provided by an embodiment of the present application;

FIG. 6a is a schematic diagram of a message structure provided by an embodiment of the present application;

FIG. 6b is a schematic diagram of another message structure provided by the embodiment of the present application;

FIG. 6c is a schematic diagram of another message structure provided by the embodiment of the present application;

FIG. 6d is a schematic diagram of another message structure provided by the embodiment of the present application;

FIG. 6e is a schematic diagram of another message structure provided by the embodiment of the present application;

FIG. 7a is a schematic diagram of a message encapsulation process provided by an embodiment of the present application;

FIG. 7b is a schematic diagram of another packet encapsulation process provided by the embodiment of the present application;

FIG. 8 is a schematic flowchart of another message transmission method provided by an embodiment of the present application;

FIG. 9a is a schematic diagram of a message transmission scenario provided by an embodiment of the present application;

FIG. 9b is a schematic diagram of another message transmission scenario provided by the embodiment of the present application;

FIG. 10 is a schematic flowchart of another message transmission method provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of another communication device provided by an embodiment of the present application.

Detailed ways

The terms "first" and "second" in the specification and drawings of the present application are used to distinguish different objects, or to distinguish different processes for the same object, rather than to describe a specific sequence of objects. In addition, the terms "including" and "having" mentioned in the description of the present application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes other unlisted steps or units, or optionally also includes Other steps or elements inherent to the process, method, product or apparatus are included. It should be noted that, in the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

The applicable network architecture of this embodiment of the present application is shown in FIG. 1 , and the network architecture includes a client device and a network device.

There may be two or more client devices. FIG. 1 shows four client devices, such as client device 101 , client device 102 , client device 103 , and client device 104 .

Wherein, the network device includes a provider edge (provider edge, PE) device and a provider (provider, P) device. There can be two or more PE devices. There can be one or more P devices. FIG. 1 shows two PE devices (PE device 105 and PE device 106 ) and one P device, and the P device is communicatively connected to the PE device 105 and the PE device 106 respectively. Both the client device 101 and the client device 102 are connected in communication with the PE device 105 , and the client device 103 and the client device 104 are both connected in communication with the PE device 106 .

Exemplarily, the client device may be a router or a switch, or a host. The PE device may be an edge router of a service provider, which is an edge device of a service provider network and is directly connected to a customer device. The P device may be a backbone router in the service provider's network, and is not directly connected to the client device. This embodiment of the present application does not limit the implementation forms of the client device and the network device.

It should be understood that in different network architectures, the foregoing network devices and client devices may correspond to different names, and those skilled in the art can understand that the names do not limit the devices themselves.

In the above network architecture, each device (such as the above client equipment, PE equipment, and P equipment) bears one or more services. Exemplarily, the services borne by a certain device may be one or more of services such as mail services, web page services, and instant messaging services. For a client device, a client device may carry one type of service or multiple types of services, and regardless of one type of service or multiple types of services, these services all correspond to the same client. For a network device (such as the above-mentioned PE device and P device), a network device can carry one type of service or multiple types of services, regardless of one type of service or multiple types of services, and these services correspond to multiple clients.

In order to facilitate understanding of the embodiments of the present application, terms involved in the embodiments of the present application will be briefly described below. It should be understood that these descriptions are only for understanding the embodiments of the present application, and shall not constitute any limitation to the present application.

1. M bit/N bit block (bit block):

An M-bit/N-bit block may also be referred to as an M-bit/N-bit coding block, an M/N-bit coding block, or an M/N-bit block. Among them, M represents the coded input, and N represents the coded output. Both M and N are positive integers, and M<N.

64B/66B, short for 64/66bit block, refers to the 64B/66B block defined by IEEE 802.3. Specifically, on the basis of 64-bit input, a 2-bit synchronization header (sync) is added according to whether it is control information or service data information. Among them, 0b10 represents a control code block, 0b01 represents a data code block, and other types of sync headers represent invalid code blocks. In the control code block, a block type field (Block Type Field) is also included to indicate the block type. Exemplarily, the value of the block type field includes 0x1E, 0x78, 0x4B, 0x87, 0x99, 0xAA, 0xB4, 0xCC, 0xD2, 0xE1 or 0xFF, as shown in FIG. 2a.

64B/65B, short for 64/65bit block, refers to the 64B/65B block defined by IEEE 802.3. Specifically, on the basis of 64B/66B, a 2-bit sync header is compressed into a coding block formed by 1 bit. Or, encode directly on the basis of 64bit input and add a 1bit sync header. 64B/65B is shown in Figure 2b.

2. Hard isolation business and common business

Hard isolation services refer to services that require isolation. For example, refer to Table a. If a certain service requires isolation, the service is a hard isolation service. Optionally, hard isolation services may also have requirements on indicators such as delay and jitter. For example, the delay of the hard isolation service is less than or equal to 100us. For another example, the jitter of the hard isolation service is less than or equal to 10 ns.

Ordinary services refer to services that do not require all of the three indicators of isolation, delay, and jitter, as shown in the last row in Table a. Alternatively, the common service may also be a service for which the network provides a best-effort service, that is, a service that has no guarantee for delay, jitter, and isolation.

table a

In the embodiment of the present application, the service type refers to common service or hard isolation service.

Exemplarily, still taking mail service, webpage service, and instant messaging service as examples, the service type of mail service and webpage service is common service, and the service type of instant messaging service (such as video conferencing service) is hard isolation service.

3. Hard-isolated packets and normal packets

A hard-isolation packet refers to a packet encapsulated by hard-isolation service data. The service data in the hard isolation message is the data of the hard isolation service. The service data in a hard isolation message may come from one client or multiple clients, which is not limited in this embodiment of the present application.

Ordinary packets refer to packets encapsulated by ordinary service data. The service data in the ordinary message is the data of the ordinary service. The business data in a normal message comes from a client.

In this embodiment of the present application, the packet type refers to a common packet or a hard-isolated packet.

4. Hard isolation and statistical multiplexing

Hard isolation means that when the link bandwidth is allocated to a service, even if the service has no data to send, the link bandwidth will not be used by other services. Exemplarily, the network device uses time division technology, frequency division technology, etc. to isolate different services from each other during transmission, so that delay, jitter, bandwidth, etc. do not affect each other. That is to say, network devices need to adopt technologies that support hard isolation features, such as time slotting technology, to be able to forward packets of hard isolation services.

Statistical multiplexing means that when the link bandwidth is allocated to a service, the link bandwidth can be used by other services when no data is sent for the service. The technology adopted by network devices needs to support statistical multiplexing, such as packet technology, which can improve resource utilization when forwarding packets of common services.

Exemplarily, the packet technology supports the feature of statistical multiplexing, but does not support the feature of hard isolation. The time slotting technology supports hard isolation but does not support statistical multiplexing.

5. Store and forward, channel forward

Store-and-forward is the forwarding technique that standard Ethernet has used since its inception. Store-and-forward means that after each receiving device in the network completely receives and stores the message, it performs table lookup processing to find the outgoing port of the message and forwards the message through the outgoing port, as shown in Figure 3a. Wherein, the receiving side device may be the network device in FIG. 3a, such as PE device 105, PE device 106, P device 107, or P device 108, and so on. In addition, store and forward can also be called Layer 2 forwarding, packet forwarding, or destination forwarding. Exemplarily, the port used for storing and forwarding on the receiving side device is called a message port, and the port form is shown in FIG. 4 . The packet port can be a native Ethernet port, such as an interface that uses unchanged Ethernet technology to implement packet-level forwarding. Network devices send Ethernet frames through message ports.

Channel forwarding means that each receiving-side device in the network forwards according to the mapping relationship between the outbound port and inbound port of the service, without recovering the complete message, as shown in Figure 3b. Wherein, the receiving side device may be the network device shown in FIG. 3 b , such as PE device 105 , PE device 106 , P device 107 , or P device 108 . Channel forwarding is a time-slotted technology. Channel forwarding can also be called layer 1.5 forwarding, or channel forwarding. Exemplarily, the port used for channel forwarding on the receiving side device is called a slotted port, and the port form is shown in FIG. 4 . The time-slotted port may be an interface that uses a modified Ethernet technology, such as a flexible Ethernet (flex ethernet, FlexE) technology, to implement block-level forwarding. A network device sends slotted frames through a slotted port. Wherein, the slotted frame is a frame of a structure, that is, a frame of a slotted frame structure.

It should be understood that, in this embodiment of the present application, a frame or a packet refers to an Ethernet frame. In the following, only the name of message is used as an example for introduction.

It can be seen from FIG. 4 that the packet port and the slotted port are independent and incompatible with each other. The same network device needs to have the above two ports to be able to forward the messages of the two services (that is, common services and hard-isolated services).

However, in the above two forwarding manners, the number of packets to be transmitted may be different. If there is no packet to be forwarded by a certain forwarding method, the corresponding port is idle, and there are many packets to be forwarded by another forwarding method, the packets of the corresponding port cannot be sent in time, the utilization of the port is poor, and the network device cannot flexibly transmit message.

In view of this, the embodiment of the present application provides a packet transmission method, and the packet transmission method of the embodiment of the present application is applied to the network architecture in FIG. 1 , FIG. 3a or FIG. 3b. In the packet transmission method in the embodiment of the present application, the first network device determines the first packet and the second packet. Wherein, the first message includes data of common services, and the second message includes data of hard-isolated services. Then, the first network device sends the first packet and the second packet in the same cycle through the first port. Wherein, the first port is a port on the first network device. In this way, even if the numbers of the first message and the second message change dynamically, since the two messages are sent through the same port, when the number of the second message decreases or no second message is sent Under normal circumstances, the first network device can send more first packets, or, conversely, when the quantity of the first packets is reduced or no first packets are sent, if the quantity of the second packets is less than more, the first network device can send more second packets, avoiding idle ports, improving port utilization, and more flexible packet transmission.

Next, with reference to FIG. 5 , the message transmission method 500 proposed in the embodiment of the present application will be introduced in detail.

S501. The first network device determines the first packet and the second packet.

Wherein, taking FIG. 1 as an example, in the case that packets are transmitted from left to right, the first network device may be the PE device 105 or the P device. In the case that packets are transmitted from right to left, the first network device may be PE device 106 or P device. In this embodiment of the present application, the first network device is implemented as the PE device 105 as an example for introduction.

Wherein, the type of the first message is different from the type of the second message.

Wherein, the introduction of the first packet is as follows: the first packet includes data of common services. Exemplarily, the data of common services in the first message comes from the first client. Still taking FIG. 1 as an example, the first client may be a client corresponding to the client device 101 . The client device 101 sends the service data of the first client to the PE device 105 . Correspondingly, the PE device 105 receives service data of the first client from the client device 101 . Afterwards, the PE device 105 encapsulates the service data of the first client into a first packet.

Exemplarily, the first packet indicates the packet type through a field. For example, the first packet includes a first field. Wherein, the first field indicates the type of the first packet, for example, the value of the first field is 0x55.

For example, taking Fig. 6a as an example, the first message includes a preamble (preamble) field, a frame start delimiter (start frame delimiter, SFD) field, an overhead (overhead, OH) field, a load field and a cyclic redundancy check ( cyclic redundancy check, CRC) field. Exemplarily, as shown in FIG. 6a, the first field is carried in the preamble part of the first packet.

For another example, taking FIG. 6b as an example, the first field is carried in the OH field of the first packet, for example, the first field is carried in the last field in the OH.

Optionally, the first packet further includes a first identifier. Wherein, the first identifier is used to identify the first client, so as to identify which client the first message is. The first identifier is carried in the OH field. Taking Figure 6a as an example, the first identifier can be recorded as a fine-granularity client identity (fgClientID), which occupies 2 fields, namely 16 bits, and the value range is 0 to 2^16-1. As shown in Fig. 6a, the first identifier occupies the first two fields in the OH field. The third field in the OH field, field 2 in Figure 6a, is reserved.

Exemplarily, the process of encapsulating the first packet by the first network device is as follows:

As shown in FIG. 7a, taking the media access control (media access control, MAC) frame of the first client as an example, the first network device performs 64B/66B encoding on the MAC frame to form code block sequence 1. Wherein, each code block in the code block sequence 1 is 66 bits. Then, the first network device performs synchronization header compression on code block sequence 1 to form code block sequence 2 . Wherein, each code block in the code block sequence 2 is 65 bits. Alternatively, the first network device performs 64B/65B encoding on the MAC frame to form code block sequence 3 . Wherein, each code block in the code block sequence 3 is 65 bits. Afterwards, the first network device processes some or all of the code blocks in the code block sequence 2 (or code block sequence 3) to obtain the payload part of the first message. Exemplarily, the payload part of the first packet includes a start (start, S) code block, multiple data (data, D) code blocks, and an end (terminal, T) code block. Wherein, the S code block and the T code block are used to determine a complete message. The D code block is used to carry the payload data in the message.

Wherein, the introduction of the second message is as follows: the second message includes the data of the hard isolation service. Exemplarily, the data of the hard isolation service in the second packet comes from the second client. Still taking FIG. 1 as an example, the second client may be a client corresponding to the client device 102 . The client device 102 sends the service data of the second client to the PE device 105 . Correspondingly, the PE device 105 receives the service data of the second client from the client device 102 . Afterwards, the PE device 105 encapsulates the service data of the second client into a second packet.

Exemplarily, the second packet indicates the packet type through a field. For example, the second packet includes a second field. Wherein, the second field indicates the type of the second packet, for example, the value of the second field is 0x66.

For example, taking FIG. 6c as an example, the second packet includes a preamble field, an SFD field, an OH field, a payload field, and a CRC field. Exemplarily, as shown in FIG. 6c, the second field is carried in the preamble part of the second packet.

For another example, taking Figure 6d as an example, the second field is carried in the OH field of the second message, for example, the second field is carried in the last field in OH, or the second field is carried in the second field in OH, namely The location of field 1 is not limited in this embodiment of the present application.

Optionally, the second packet further includes a multiframe indicator (multiframe indicator, MFI). Wherein, the MFI indicates that the second packet is a multiframe. Wherein, the introduction of the multiframe is as follows: a multiframe includes multiple data units, and different data units correspond to different time slots. Different data units carry service data transmitted in corresponding time slots. For example, taking 96 data units as an example, the first data unit carries the business data transmitted in time slot 0, the second data unit carries the business data transmitted in time slot 1, and so on until the 96th data The unit carries the service data transmitted in the time slot 95. For details, refer to the relevant description of the load of the second message, and details will not be repeated here. In addition, the data unit can also be described as a basic frame, fine-granularity slot (fgSlot) data, or slot data, etc. In this embodiment of the application, a data unit is used as an example for introduction.

Exemplarily, in FIG. 6c or FIG. 6d, MFI may occupy 1 field, that is, 8 bits, and the value range is 0-19. The MFI is carried in the first field in the OH field. Certainly, the MFI may also be carried in the second field or the third field in the OH field, which is not limited in this embodiment of the present application.

It should be understood that the positions of the first field and the second field in the packet may be the same. For example, the first field is carried in the preamble part of the first packet, and the second field is also carried in the preamble part of the second packet. For another example, the first field is carried in the OH field of the first packet, and the second field is also carried in the OH field of the second packet. Alternatively, the positions of the first field and the second field in the message may also be different. For example, the first field is carried in the preamble part of the first packet, and the second field is carried in the OH field of the second packet. For another example, the first field is carried in the OH field of the first packet, and the second field is carried in the preamble part of the second packet, which is not limited in this embodiment of the present application.

Exemplarily, the payload in the second message is introduced as follows: the payload part includes one or more data units, as shown in FIG. 6e, the payload part includes 96 data units, respectively marked as fgSlot0˜fgSlot95.

For different data units, there can be one-to-one correspondence between data units and clients. That is to say, one data unit corresponds to one second client, and different data units correspond to different second clients. For example, for different data units, one or more data units may correspond to the same second client. Different data units carry service data transmitted in different time slots. Taking Table 1 as an example, Table 1 shows 96 client numbers and 96 time slot indexes, and the client numbers correspond to the time slot indexes one by one. Different customer numbers represent different second customers. Different slot indices identify different slots.

Table 1

客户号client number	时隙索引 slot index

fgClient0fgClient0	00
fgClient1 fgClient1	11
fgClient2 fgClient2	22
fgClient3 fgClient3	33
……	……
fgClient94 fgClient94	9494
fgClient95 fgClient95	9595

In Table 1, the time slot index 0 corresponds to the time slot for transmitting the service data of the client number fgClient0, and the time slot index 1 corresponds to the time slot for transmitting the service data of the client number fgClient1. Others can be deduced in this way until the time slot corresponding to the time slot index 95 transmits the service data of the client number fgClient95.

Referring to Table 1, the payload part of the second message includes 96 data units, and each data unit transmits service data transmitted in one time slot. Specifically, the first data unit, that is, the data unit identified by fgSlot0, transmits the service data transmitted in the time slot corresponding to the time slot index 0, that is, the service data of the client number fgClient0. The second data unit, that is, the data unit identified by fgSlot1, transmits the service data transmitted in the time slot corresponding to the time slot index 1, that is, the service data of the client number fgClient1. Others can be deduced in this way until the 96th data unit, that is, the data unit identified by fgSlot95, the service data transmitted by the time slot corresponding to the transmission time slot index 95, that is, the service data of the client number fgClient95.

Or, for different data units, there may be a many-to-one relationship between the data unit and the client. That is to say, multiple data units correspond to one second client. For example, taking Table 2 as an example, Table 2 shows 48 customer numbers and 96 time slot indexes, and one customer number corresponds to two time slot indexes.

Table 2

客户号client number	时隙索引 slot index


fgClient0fgClient0	0、10, 1
fgClient1 fgClient1	2、32, 3
……	……
fgClient46fgClient46	92、9392, 93
fgClient47 fgClient47	94、9594,95

In Table 2,

time slot indexes

0 and 1 correspond to time slots for transmitting service data of client number fgClient0, and

time slot indexes

2 and 3 correspond to time slots for transmitting service data of client number fgClient1. Others can be deduced in this way until the

time slot indexes

94 and 95 correspond to the time slots for transmitting the service data of the client number fgClient47.

Referring to Table 2, the payload part of the second message includes 96 data units, and each data unit transmits service data transmitted in one time slot. Specifically, the first data unit, that is, the data unit identified by fgSlot0, transmits the service data transmitted in the time slot corresponding to the time slot index 0, that is, the service data of the client number fgClient0. The second data unit, that is, the data unit identified by fgSlot1, is the service data transmitted in the time slot corresponding to the transmission time slot index 1, which is also the service data of the client number fgClient0. Others can be deduced by analogy until the 96th data unit, that is, the data unit identified by fgSlot95, the service data transmitted in the time slot corresponding to the transmission time slot index 95, that is, the service data of the client number fgClient47.

It should be understood that Table 2 only uses two data units corresponding to the same second client as an example for introduction. Of course, three or more data units may also correspond to the same second client. Moreover, for different second clients, the number of data units corresponding to different second clients may be the same, as shown in Table 1 or Table 2. Alternatively, the number of data units corresponding to different second clients may also be different. For example, the second client identified by the client number fgClient0 corresponds to one data unit, the second client identified by the client number fgClient1 corresponds to two data units, and the second client identified by the client number fgClient2 corresponds to three data units. limited.

For each data unit, each data unit includes encoded code blocks corresponding to the customer's service data. Each data unit includes at least one code block. For the code blocks in the same data unit, the code blocks are obtained by encoding the service data of the same client. Exemplarily, the encoding format adopted by the first network device may be 64B/65B, or 64B/66B and 66B/65B.

Exemplarily, taking one data unit, that is, the first data unit as an example, the process of encapsulating the second packet by the first network device is introduced:

The first network device determines the first code block in the first data unit according to the first information.

Wherein, the first information indicates the corresponding relationship between the first data unit and the target customer. Exemplarily, the first information may be Table 1 or Table 2. In this embodiment of the present application, the first information is Table 1 as an example for introduction. It should be understood that the first information may also have other names, such as a time slot configuration table for hard-isolated services, which is not limited in this embodiment of the present application.

Exemplarily, the first data unit may be the data unit identified by fgSlot0 in Table 1. Correspondingly, the target client is the second client identified by the client number fgClient0.

Exemplarily, as shown in FIG. 7 b , taking the MAC frame of client number fgClient0 as an example, the first network device performs 64B/66B encoding on the MAC frame to form code block sequence 4 . Wherein, each code block in the code block sequence 4 is 66 bits. Then, the first network device performs synchronization header compression on the code block sequence 4 to form a code block sequence 5 . Wherein, each code block in the code block sequence 5 is 65 bits. Alternatively, the first network device performs 64B/65B encoding on the MAC frame to form code block sequence 6 . Wherein, each code block in the code block sequence 6 is 65 bits. In code block sequence 5 or code block sequence 6, every two adjacent code blocks are processed and carried in the same data unit, that is, the data unit identified by fgSlot0.

For other data units, the first network device still adopts the above processing procedure until the determination of 96 data units in the load part is completed. In this way, the payload part of the second message includes 2*96+2 code blocks, specifically, includes one S code block, multiple D code blocks, and one T code block. Wherein, the S code block and the T code block are used to determine a complete message. The D code block is used to carry the payload data in the message.

It should be noted that the lengths of the encoded first packet and the second packet are the same. For example, taking the second message including 96 data units as an example, the number of code blocks in the first message and the second message are both 194, and the number of bits in each code block is the same.

S502. The first network device sends the first packet and the second packet to the second network device in the same period through the first port. Correspondingly, the second network device receives the first packet and the second packet from the first network device in the same period through the second port.

Wherein, taking FIG. 1 as an example, in the case that packets are transmitted from left to right, the second network device may be the PE device 106 or the P device. For example, in the case that the first network device is the PE device 105, the second network device is the P device. For another example, in the case that the first network device is a P device, the second network device is a P device or a PE device 106 . In the case that packets are transmitted from right to left, the second network device may be PE device 105 or P device. For example, where the first network device is a PE device 106, the second network device is a P device. For another example, in the case that the first network device is a P device, the second network device is a P device or a PE device 105 . In this embodiment of the present application, the first network device is implemented as a PE device 105 and the second network device is implemented as a P device as an example for introduction.

Wherein, the first port is a port on the first network device, for example, the first port is a sending port on the first network device. The second port is a port on the second network device, for example, the second port is a receiving port on the second network device. In the embodiment of the present application, both the first port and the second port are different from the message port, and both the first port and the second port are different from the slotted port. Both the first port and the second port have the following characteristics: hard isolation and statistical multiplexing. Since both the first port and the second port have the feature of hard isolation, the first port can be used to send hard-isolation packets, and the second port can be used to receive hard-isolation packets. Since both the first port and the second port have the feature of statistical multiplexing, the first port can be used to send ordinary packets, and the second port can be used to receive ordinary packets.

Among them, the implementation process of S502 includes the following two examples:

Example 1, as shown in the box of mode 1 in Figure 8, S502 includes S502a:

S502a. According to the second information, the first network device sends the first packet to the second network device at the first time unit through the first port, and sends the second packet to the second network device at the second time unit. Correspondingly, the second network device receives the first message from the first network device at the first time unit through the second port according to the second information, and receives the second packet from the first network device at the second time unit. message.

Wherein, the first time unit and the second time unit are time units in the same period. Exemplarily, a cycle includes 25 time units as an example. The duration of each time unit is the same, for example, each time unit includes 1 time slot.

In the same period of mode 1, the time unit for sending the first packet is described as the first time unit, and the time unit for sending the second packet is described as the second time unit. For a message, one time unit means one sending opportunity.

Wherein, the second information indicates the positions of the first time unit and the second time unit in the cycle, as shown in Table 3:

table 3

client number

The number of time units (unit: piece)

The sequence number of the time unit in the cycle

0x0001 0x0001	33	1～31～3
0x0002 0x0002	11	44
0x0000 0x0000	11	55
0x00030x0003	55	6～106～10
0x0000 0x0000	22	11～1211～12
0x0004 0x0004	33	13～1513～15
0x0005 0x0005	11	1616
0x0000 0x0000	11	1717
0x00060x0006	55	18～2218～22
0x0000 0x0000	22	23～2423～24
0x0007 0x0007	11	2525

Referring to Table 3, Table 3 shows a period of port bandwidth configuration. Taking a cycle including 25 time units as an example, the message encapsulated by the business data of customer number 0x0001 occupies 3 time units, that is, the first to third time units in the cycle. That is to say, the message of the client number 0x0001 occupies 3 sending opportunities in the above-mentioned cycle, and is the first 3 sending opportunities in the above-mentioned cycle. The message encapsulated by the business data of customer number 0x0002 occupies 1 time unit, that is, the 4th time unit in the cycle. That is to say, the message of the client number 0x0002 occupies one sending opportunity in the above-mentioned period, and is the fourth sending opportunity in the above-mentioned period. In the third line, the second message encapsulated by the service data of the customer number 0x0000 occupies 1 time unit, that is, the 5th time unit in the cycle. Among them, the customer number 0x0000 refers to the second customer, which only supports the hard isolation service, and the specific customer number can be referred to Table 1 or Table 2. That is to say, the message of the client number 0x0000 occupies one sending opportunity in the above-mentioned period, and is the fifth sending opportunity in the above-mentioned period. The customer numbers of other lines can be deduced by analogy, and will not be repeated here.

In combination with Table 3, taking the first message as the message of the first customer and the second message including the business data of the second customer as an example, the customer number of the first customer can be a customer number in 0x0001 to 0x0007 in Table 3 , such as 0x0001. Correspondingly, the first time unit is the first 3 time units in the above period. The second client is identified by 0x0000 in Table 3 to represent a type of client that provides hard isolation services. Correspondingly, the second time unit is the time unit of the bold part in the above cycle.

Exemplarily, according to Table 3, the first network device sends the first message encapsulated by the business data of the customer number 0x0001 in the first to third time units in the above-mentioned cycle, and in the fifth and third time units in the above-mentioned cycle At 11, 12, 17, 23, and 24 time units, send the second packet encapsulated by the service data of the second client, as shown in FIG. 9a .

It should be understood that in Table 3, only the hard-isolated service and each common service have a fixed time unit position in the cycle as an example for introduction. Of course, as another possible implementation manner, in Table 3, only the time unit position of the hard-isolated service is fixed, and the time unit position of each common service in the common service is not fixed. For example, the hard isolation service occupies the 5th, 11th, 12th, 17th, 23rd, and 24th time units in the above cycle. Ordinary business occupies the 1st to 4th, 6th to 10th, 13th to 16th, 18th to 22nd, and 25th time units in the above cycle, but which time unit(s) each ordinary business occupies in the ordinary business Not limited.

In this case, the first time unit is still the first 3 time units in the above cycle, and the first message is the message of customer number 0x0001. If only the package of customer number 0x0001 is completed, other customer numbers If the encapsulation of the packet is not completed, the first network device sends the packet with the client number 0x0001 in the first time unit. Conversely, if the packet encapsulation of the client ID 0x0001 and the client ID 0x0002 is completed, the first network device sends the packet in the first time unit according to the preset rule. For example, the preset rule may be the priority of the service, and determine which customer's message to send in order of priority from high to low. For example, if the service priority of 0x0001 is higher than the service priority of 0x0002, then the first network device sends the message of the client number 0x0001 in the first time unit according to the preset rule. For another example, the preset rule may be the sequence of customer numbers, and the order of the customer numbers from front to back is used to determine which customer's message to send. For example, if the client number 0x0001 is ranked before the client number 0x0002, the first network device sends the message of the client number 0x0001 in the first time unit according to the preset rule. It should be understood that the above is only an introduction by taking priority or customer number sorting as an example, and the preset rules may also have other implementation forms, which are not limited in this embodiment of the present application.

Example 2, as shown in the box of mode 2 in Figure 8, S502 includes S502b:

S502b. According to the second information and the third information, the first network device sends the first packet to the second network device through the first port in the unoccupied first time unit, and sends the first packet to the second network device in the unoccupied second time unit. The second network device sends the second packet. Correspondingly, the second network device receives the first message from the first network device at the unoccupied first time unit through the second port according to the second information and the third information, and receives the first message from the first network device at the unoccupied second time unit Receive the second packet from the first network device.

For the first time unit and the second time unit, refer to the description of S502a, which will not be repeated here.

Among them, the second information indicates the configuration quantity of the first time unit and the second time unit in the cycle, as shown in Table 4-1:

Table 4-1

客户号client number	时间单元的配置数量(单位：个)The number of configured time units (unit: pcs)
0x00010x0001	33
0x0002 0x0002	11
0x00000x0000	66
0x00030x0003	55
0x0004 0x0004	33
0x0005 0x0005	11
0x00060x0006	55
0x0007 0x0007	11

Refer to Table 4-1, Table 4-1 shows a period of port bandwidth configuration. Taking a cycle including 25 time units as an example, the message encapsulated by the business data of the customer number 0x0001 occupies 3 time units, but does not indicate the position of these 3 time units in the cycle. That is to say, the message of client number 0x0001 has 3 sending opportunities in the above cycle. The packet encapsulated by the business data of customer number 0x0002 occupies one time unit, but does not indicate the position of this time unit in the cycle. That is to say, the message of the client number 0x0002 has one sending opportunity in the above period. In the third line, the second message encapsulated by the service data of the customer number 0x0000 occupies 6 time units, but does not indicate the position of the time unit in the cycle. That is to say, the message of client number 0x0000 has 6 sending opportunities in the above cycle. Other customer numbers can be deduced by analogy, so I won’t repeat them here.

Among them, the third information indicates the unoccupied quantity of the first time unit and the second time unit in the cycle, as shown in Table 4-2:

Table 4-2

客户号client number	时间单元的未占用数量(单位：个)Unoccupied number of time units (unit: piece)
0x00010x0001	22
0x0002 0x0002	00
0x00000x0000	55
0x00030x0003	44

0x00040x0004	22
0x0005 0x0005	00
0x00060x0006	44
0x0007 0x0007	00

Refer to Table 4-2, taking a cycle including 25 time units as an example, the first message encapsulated by the business data of customer number 0x0001 has 2 unoccupied time units. That is to say, the message of client number 0x0001 still has 2 sending opportunities in the above-mentioned cycle. There are 0 unoccupied time units in the packet encapsulated by the business data of customer number 0x0002. That is to say, there is no opportunity to send the message of the client number 0x0002 in the above cycle. There are 5 unoccupied time units in the second message encapsulated by the business data of the customer number 0x0000. That is to say, there are still 5 sending opportunities for the message of client number 0x0000 in the above period. Other customer numbers can be deduced by analogy, so I won’t repeat them here.

Combining with Table 4-1, taking the first message as the message of the first customer and the second message as an example including the business data of the second customer, the customer number of the first customer is still 0x0001. Correspondingly, the configuration quantity of the first time unit is 3. The second client is identified by 0x0000 in Table 4-1 to represent a type of client that provides hard isolation services. Correspondingly, the configuration quantity of the second time unit is 6. Combined with Table 4-2, the unoccupied quantity in the first time unit is 2, and the unoccupied quantity in the second time unit is 5.

Among them, the hard-isolated service has a higher requirement on time delay. In order to ensure the low time-delay of the hard-isolated service, the first network device preferentially sends the packets of the hard-isolated service.

For example, in the case that the generation time of the second packet is the same as that of the first packet, the first network device sends the second packet first, and then sends the first packet. That is to say, the second time unit where the second packet is located is earlier than the first time unit where the first packet is located. Specifically, in time unit 1, if the packets of client ID 0x0000 and client ID 0x0001 have been encapsulated, since the packet of client ID 0x0000 is a hard-isolated packet, the first network device first sends Packet with client number 0x0000 to ensure the delay requirement of the hard isolation service. Wherein, the position of the time unit 1 in the cycle is shown by a dotted box in FIG. 9b. For the packet with the client number 0x0001 that has been encapsulated, the first network device sends the packet at a time unit after time unit 1, such as time unit 2. Correspondingly, time unit 1 is the second time unit, and time unit 2 is the first time unit. In addition, the first network device updates Table 4-2, and the updated Table 4-2 indicates that there are still 4 unoccupied time units for the message of client number 0x0000, that is, there are still 4 sending opportunities for the message of client number 0x0000. The updated Table 4-2 indicates that there is still one unoccupied time unit for the message of client number 0x0001, that is, there is still one sending opportunity for the message of client number 0x0001.

For another example, when the generation time of the second packet is earlier than the generation time of the first packet, the first network device also sends the second packet first, and then sends the first packet. That is to say, the second time unit where the second packet is located is earlier than the first time unit where the first packet is located. Specifically, in time unit 1, if the packet of client number 0x0000 has been encapsulated but the packet of client number 0x0001 has not been encapsulated, the first network device first sends the packet of client number 0x0000 in time unit 1 , to ensure the delay requirements of hard-isolated services. Then, the first network device sends the packet at a time unit after time unit 1, such as time unit 2. For other descriptions, please refer to the introduction in the previous paragraph, and will not repeat them here.

For another example, when the generation time of the second packet is later than the generation time of the first packet, the first network device sends the first packet first, and then sends the second packet. That is to say, the second time unit where the second packet is located is later than the first time unit where the first packet is located. Specifically, still taking time unit 1 as an example, if the packet of client number 0x0000 has not been encapsulated, but the packet of client number 0x0001 has been encapsulated, then the first network device first sends the packet of client number 0x0001 in time unit 1. message. After the encapsulation of the message with the client number 0x0000 is completed, the first network device sends the message with the client number 0x0000 in a time unit after the time unit 1, such as time unit 2. Correspondingly, time unit 1 is the first time unit, and time unit 2 is the second time unit. In addition, for the update of Table 4-2, please refer to the introduction in the previous paragraph, which will not be repeated here.

It should be noted that the second information in S502a and S502b is determined based on the customer's service bandwidth. The second information is used to allocate bandwidth for common services and hard-isolated services at the port level, for example, for a 25Gbps port, the division granularity is 1Gbps. The first network device configures the bandwidth according to the bandwidth ratio of the hard-isolation service and the common service. For example, the bandwidth allocated to the hard-isolated service is 2 Gbps, and the bandwidth allocated to the common service is 23 Gbps. This allocation mode is indicated in the second information in an equivalent form of a time unit (or called a scheduling opportunity). Exemplarily, a bandwidth of 23 Gbps is equivalent to 23 allocated time units, that is, 23 sending opportunities. The bandwidth of 2Gbps is equivalent to 2 allocated time units, that is, 2 sending opportunities.

It should be understood that the second information may also have another name, such as a port bandwidth configuration table, which is not limited in this embodiment of the present application.

As shown in Fig. 10, in the above-mentioned mode 1 and mode 2, as a possible implementation mode, for ordinary services, this embodiment of the present application also includes S503 and S504:

S503. The first network device determines the third packet.

Wherein, the third packet includes data of common services. The third message is a message of the third customer, and the service data of the third customer belongs to common service data. That is to say, the type of the third message is the same as that of the first message, that is, the third message also belongs to a common message. The third message has no requirements on isolation.

Exemplarily, still taking Table 3 as an example, the customer number of the first customer is 0x0001, and the packet encapsulated with the service data of the customer number 0x0001 is the first packet. The customer number of the third customer is 0x0002, and the packaged packet of the service data of the customer number 0x0002 is the third packet.

S504. The first network device sends the third packet to the second network device in a period through the first port. Correspondingly, the second network device receives the third packet from the first network device in a period through the second port.

Wherein, the first port in S504 is the same port as the first port in S502, the second port in S504 is the same port as the second port in S502, the cycle in S504 is the same cycle as the cycle in S502, specifically Refer to the introduction of S502, which will not be repeated here.

Wherein, the third packet is transmitted by the third time unit. The third time unit is configured to transmit the message of the first client, and the third time unit is in an idle state.

Wherein, the message of the first client includes the first message.

For example, taking Table 3 as an example, the third time unit is the second time unit in the above cycle. Based on Table 3, the second time unit is configured to send the packet of customer number 0x0001, but the packet of customer number 0x0001 has not been encapsulated, and the packet of customer number 0x0002 has been encapsulated. In order to improve resource utilization, the first The network device sends a message of 0x0002 at the second time unit in the above cycle.

For another example, taking Table 4-1 as an example, the third time unit is still the second time unit in the above cycle. The packet of the hard isolation service has not been encapsulated. In this case, the first network device sends the normal packet in the third time unit. The first network device configures which client's message the third time unit is used to send according to a preset rule. For example, the preset rule may be the priority of the service, which is configured in descending order of priority. For example, if the service priority of 0x0001 is higher than the service priority of 0x0002, the third time unit is configured to send the message of 0x0001. For another example, the preset rule may be the arrangement order of customer numbers, which is configured in the order of customer numbers from front to back. For example, if the customer number 0x0001 is ranked before the customer number 0x0002, then the third time unit is configured to send a message of 0x0001. However, the packet of client ID 0x0001 has not been encapsulated, and the packet of client ID 0x0002 has been encapsulated. In order to improve resource utilization, the first network device sends the packet of 0x0002 in the second time unit of the above cycle.

That is to say, when the first network device sends a common message to the second network device, the characteristic of statistical multiplexing can be realized, so as to improve resource utilization.

For the second network device, after the second network device executes S502, it also executes S505:

S505. The second network device forwards the service data in the first packet according to the type of the first packet, and forwards the service data in the second packet according to the type of the second packet.

For the first message and the type of the first message, refer to the introduction of S501, and for the second message and the type of the second message, refer to the introduction of S501, which will not be repeated here.

For example, for a certain message, if the message is of the same message type as the first message, the second network device performs steps 1 and 2:

Step 1. The second network device determines a store-and-forward mode according to the type of the first packet.

Exemplarily, if a message carries the first field, the message is the first message, that is, it belongs to a common message, and needs to be forwarded in a store-and-forward manner. For storage and forwarding, please refer to the introduction in the explanation of terms, so I won’t go into details here.

Step 2. The second network device forwards the service data in the first packet in a store-and-forward manner.

Exemplarily, the second network device queries the destination address based on the first identifier in the first packet, and then forwards the service data in the first packet according to the queried destination address.

It should be understood that the type of the third packet is the same as that of the first packet. Therefore, after the second network device performs S504, the second network device may perform the

above steps

1 and 2 to forward the third packet.

For another example, for a message, if the message type is the same as that of the second message, the second network device performs steps 3 and 4:

Step 3. The second network device determines the channel forwarding mode according to the type of the second packet.

Exemplarily, if a packet carries the second field, the packet is a second packet, that is, a hard-isolated packet, and needs to be forwarded in a channel forwarding manner. For channel forwarding, please refer to the introduction in the explanation of terms, so I won’t go into details here.

Step 4: The second network device forwards the service data of each second customer in the at least one second customer in a channel forwarding manner.

Wherein, the data in the second message includes service data of at least one second client.

Exemplarily, the second network device determines a code block of each second client service data in the second packet according to the first information. Then, each code block of the second client service data is forwarded according to the egress time slot table. Wherein, the egress time slot table indicates the egress port and time slot position of each second client.

It should be understood that in this embodiment of the present application, the number of packets is not limited, for example, the number of first packets may be one or multiple. The quantity of the second message may be one or more. The quantity of the third message may be one or more.

It should be noted that the types of business are different, and the corresponding customers are also different. The client corresponding to the first packet is described as a first client, the client corresponding to the second packet is described as a second client, and the first client and the second client are different clients. It should be understood that the first client and the second client may also have other names, which are not limited in this embodiment of the present application.

The foregoing mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various network elements. Correspondingly, the embodiment of the present application further provides a communication device, and the communication device may be the network element in the foregoing method embodiment, or a device including the foregoing network element, or may be a component applicable to the network element. It can be understood that, in order to realize the above functions, the communication device includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Exemplarily, FIG. 11 shows a schematic structural diagram of a communication device 1100 . The communication device 1100 includes a processing unit 1101 , a sending unit 1102 and a receiving unit 1103 .

In a possible example, taking the communication device 1100 as the first network device as an example, the processing unit 1101 is configured to support the first network device to execute S501 in FIG. 5 , and/or in this embodiment of the application, the first network device needs to execute other processing operations. The receiving unit 1103 is configured to support other receiving operations that need to be performed by the first network device. The sending unit 1102 is configured to support the first network device to perform S502 in FIG. 5 , and/or other sending operations that the first network device needs to perform in the embodiment of the present application.

In another possible example, taking the communication device 1100 as the second network device as an example, the processing unit 1101 is used to support the second network device to execute S505 in FIG. Other processing operations performed. The receiving unit 1103 is configured to support the second network device to perform S502 in FIG. 5 , and/or other receiving operations that the second network device needs to perform in the embodiment of the present application. The sending unit 1102 is configured to support the second network device to perform S505 in FIG. 5 and/or other sending operations that the second network device needs to perform in the embodiment of the present application.

Optionally, the communication device 1100 may further include a storage unit 1104 for storing program codes and data of the communication device, and the data may include but not limited to original data or intermediate data.

Wherein, the processing unit 1101 may be a processor or a controller, such as a CPU, a general-purpose processor, an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor can also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and so on.

The sending unit 1102 may be a communication interface, a transmitter, or a sending circuit, etc., where the communication interface is collectively referred to as, in a specific implementation, the communication interface may include multiple interfaces, for example, may include: a first interface on the first network device , or an interface and/or other interfaces between the second network device and other devices.

The receiving unit 1103 may be a communication interface, a receiver or a receiving circuit, etc., wherein the communication interface is collectively referred to as, in a specific implementation, the communication interface may include multiple interfaces, for example, may include: a second interface on the second network device , or an interface and/or other interfaces between the first network device and other devices.

The sending unit 1102 and the receiving unit 1103 may be physically or logically implemented as the same unit.

The storage unit 1104 may be a memory.

When the processing unit 1101 is a processor, the sending unit 1102 and the receiving unit 1103 are communication interfaces, and the storage unit 1104 is a memory, the communication device involved in this embodiment of the present application may be as shown in FIG. 12 .

Referring to FIG. 12 , the communication device includes: a processor 1201 , a communication interface 1202 , and a memory 1203 . Optionally, the communication device may further include a bus 1204 . Wherein, the communication interface 1202, the processor 1201 and the memory 1203 can be connected to each other through the bus 1204; the bus 1204 can be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus etc. The bus 1204 can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in Fig. 12, but it does not mean that there is only one bus or one type of bus.

Optionally, the embodiments of the present application further provide a computer program product carrying computer instructions, and when the computer instructions are run on the computer, the computer is made to execute the method described in the foregoing embodiments.

Optionally, an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are run on a computer, the computer executes the method described in the above-mentioned embodiments.

Optionally, an embodiment of the present application further provides a chip, including: a processing circuit and a transceiver circuit, and the processing circuit and the transceiver circuit are used to implement the methods described in the foregoing embodiments. Wherein, the processing circuit is used to execute the processing action in the corresponding method, and the transceiver circuit is used to execute the receiving/sending action in the corresponding method.

In the above embodiments, all or part of them may be implemented 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. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device including a server, a data center, and the like integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state drive (solid state drive, SSD)) wait.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple devices. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Through the above description of the implementation, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general-purpose hardware, of course, it can also be implemented by hardware, but in many cases the former is a better implementation . Based on this understanding, the essence of the technical solution of this application or the part that contributes can be embodied in the form of software products, and the computer software products are stored in readable storage media, such as computer floppy disks, hard disks or optical disks etc., including several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present application.

The above is only a specific implementation of this application, but the protection scope of this application is not limited thereto, and changes or replacements within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A message transmission method, characterized in that, comprising:

The first network device determines a first message and a second message, wherein the first message includes data of a common service, and the second message includes data of a hard-isolated service;

The first network device sends the first packet and the second packet in the same cycle through its first port.
The method according to claim 1, wherein the first message includes a first field, wherein the first field indicates the type of the first message;

The second packet includes a second field, wherein the second field indicates the type of the second packet.
The method according to claim 2, wherein the first field is carried in the preamble part of the first message, or the first field is carried in the overhead OH field of the first message, The second field is carried in the preamble part of the second packet, or the second field is carried in the OH field of the second packet.
The method according to any one of claims 1 to 3, wherein the first message further includes a first identifier, the first identifier is used to identify the first client, and the message of the first client Include the first message.
The method according to any one of claims 1 to 4, wherein the first data unit comprises a first code block;

Wherein, the first data unit is one or more data units in the second message, the first code block is a code block after encoding service data of the target customer, and the target customer is at least one first For a second client among the two clients, the data in the second message includes service data of all the second clients of the at least one second client.
The method according to claim 5, wherein the method further comprises:

determining, by the first network device, a first code block in the first data unit according to first information;

Wherein, the first information indicates the correspondence between the first data unit and the target customer.
The method according to any one of claims 1 to 6, wherein the encoded message lengths of the first message and the second message are the same.
The method according to claim 7, wherein the encoding includes at least one of the following: 64B/66B, 66B/65B, or 64B/65B.
The method according to any one of claims 1 to 8, wherein the first network device sends the first message and the second message in the same cycle through its first port, including:

The first network device sends the first message in a first time unit through the first port according to the second information, and sends the second message in a second time unit;

Wherein, the second information indicates the positions of the first time unit and the second time unit in the period.
The method according to any one of claims 1 to 8, wherein the first network device sends the first message and the second message in the same cycle through its first port, including:

The first network device sends the first message in the unoccupied first time unit through the first port according to the second information and the third information, and sends the first packet in the unoccupied second time unit the second message;

Wherein, the second information indicates the configured quantity of the first time unit and the second time unit in the period, and the third information indicates the unoccupied quantity of the first time unit and the second time unit in the period.
The method according to claim 10, wherein the second time unit in which the second message is located is earlier than the first time unit in which the first message is located, and the second message and the first time unit are The generation time of the first message is the same, or the generation time of the second message is earlier than the generation time of the first message;

Or, the second time unit where the second message is located is later than the first time unit where the first message is located, and the generation time of the second message is later than the generation time of the first message.
The method according to any one of claims 9 to 11, wherein the second information is determined based on the service bandwidth of the first client and the service bandwidth of the second client;

Wherein, the message of the first client includes the first message, and the data in the second message includes service data of the second client.
The method according to any one of claims 1 to 12, further comprising:

The first network device determines a third message, where the third message is a message of a third client, and the type of the third message is the same as the type of the first message;

The first network device sends the third message in the period through the first port, wherein the third message is transmitted in a third time unit, and the third time unit is configured to transmit A message of the first client, and the third time unit is in an idle state, and the message of the first client includes the first message.
A message transmission method, characterized in that, comprising:

The second network device receives the first message and the second message in the same period through its second port, wherein the first message includes data of common services, and the second message includes data of hard-isolated services ;

The second network device forwards the service data in the first message according to the type of the first message, and forwards the service data in the second message according to the type of the second message .
The method according to claim 14, wherein the second network device forwards the service data in the first message according to the type of the first message, comprising:

The second network device determines a store-and-forward mode according to the type of the first message;

The second network device forwards the service data in the first packet in the store-and-forward manner.
The method according to claim 15, wherein the first message includes a first field, wherein the first field indicates a type of the first message.
The method according to claim 16, wherein the first field is carried in the preamble part of the first packet, or the first field is carried in the overhead OH field of the first packet.
The method according to any one of claims 14 to 17, wherein the second network device forwards the service data in the second message according to the type of the second message, including:

The second network device determines a channel forwarding mode according to the type of the second message;

The second network device forwards the service data of each second client in the at least one second client in the channel forwarding manner, wherein the data in the second message includes all the second clients in the at least one second client 2. Customer's business data.
The method according to claim 18, wherein the second message includes a second field, wherein the second field indicates a type of the second message.
The method according to claim 19, wherein the second field is carried in the preamble part of the second packet, or the second field is carried in the OH field of the second packet.
A communication device, characterized by comprising: a unit for performing the steps described in any one of claims 1 to 13.
A communication device, characterized by comprising: a processor and a memory, the processor is coupled to the memory, the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, A method as claimed in any one of claims 1 to 13 is carried out.
A chip, characterized in that the chip includes a logic circuit and an input-output interface, the input-output interface is used to communicate with modules other than the chip, and the logic circuit is used to run computer programs or instructions to realize A method as claimed in any one of claims 1 to 13.
A communication device, characterized by comprising: a unit for performing the steps described in any one of claims 14 to 20.
A communication device, characterized by comprising: a processor and a memory, the processor is coupled to the memory, the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, A method as claimed in any one of claims 14 to 20 is carried out.
A chip, characterized in that the chip includes a logic circuit and an input-output interface, the input-output interface is used to communicate with modules other than the chip, and the logic circuit is used to run computer programs or instructions to realize A method as claimed in any one of claims 14 to 20.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program, and when the program is invoked by a processor, the method according to any one of claims 1 to 20 is executed.