WO2022134840A1 - 报文传输方法、系统、网络设备和存储介质 - Google Patents

报文传输方法、系统、网络设备和存储介质 Download PDF

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Publication number
WO2022134840A1
WO2022134840A1 PCT/CN2021/126781 CN2021126781W WO2022134840A1 WO 2022134840 A1 WO2022134840 A1 WO 2022134840A1 CN 2021126781 W CN2021126781 W CN 2021126781W WO 2022134840 A1 WO2022134840 A1 WO 2022134840A1
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Prior art keywords
packet
layer
message
forwarding
header
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PCT/CN2021/126781
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English (en)
French (fr)
Inventor
高飞
车忠辉
马小亮
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中兴通讯股份有限公司
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Priority to US18/255,926 priority Critical patent/US20240048644A1/en
Priority to EP21908841.6A priority patent/EP4243383A4/en
Priority to JP2023532575A priority patent/JP2023551687A/ja
Publication of WO2022134840A1 publication Critical patent/WO2022134840A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/427—Loop networks with decentralised control
    • H04L12/433—Loop networks with decentralised control with asynchronous transmission, e.g. token ring, register insertion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/10—Mapping addresses of different types
    • H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H04L45/04—Interdomain routing, e.g. hierarchical routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/66—Layer 2 routing, e.g. in Ethernet based MAN's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/563—Data redirection of data network streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/164—Adaptation or special uses of UDP protocol
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
    • H04L2012/4629—LAN interconnection over a backbone network, e.g. Internet, Frame Relay using multilayer switching, e.g. layer 3 switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing

Definitions

  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a message transmission method, system, network device, and storage medium.
  • the communication process is: send The receiver encapsulates the data and the Medium Access Control (MAC) address in the message to form a Layer 2 message, and then transmits the Layer 2 message to the receiver through the optical fiber for the receiver to use.
  • MAC Medium Access Control
  • the embodiment of the present application provides a message transmission method, and the method includes the following steps: receiving a Layer 2 message sent by a first user equipment; obtaining a forwarding port number and a newly added message header, and determining a message encapsulation method; Encapsulate the Layer 2 packet according to the packet encapsulation method, the forwarding port number and the newly added packet header to obtain a Layer 3 packet; and send the Layer 3 packet to the second forwarding device .
  • An embodiment of the present application also proposes a packet transmission method, including: receiving a packet sent by a first forwarding device; detecting whether the packet is a Layer 3 packet, wherein the Layer 3 packet is a packet carrying a new The message of the message header and the forwarding port number; if so, detect whether the newly added message header and the forwarding port number are the message header and port number pre-agreed with the first forwarding device; if so, The data part in the message is extracted, and the data part is sent to the second user equipment, where the data part is a Layer 2 message sent by the first user equipment.
  • An embodiment of the present application further proposes a message transmission system, including: a first user equipment, configured to send a Layer 2 message to a first forwarding device; a first forwarding device, configured to receive a message sent by the first user equipment For the Layer 2 packet, determine the forwarding port number, the packet encapsulation method, and the newly added packet header, and report the Layer 2 packet to the Layer 2 packet according to the packet encapsulation method, the forwarding port number, and the newly added packet header.
  • the second forwarding device receives the packet sent by the first forwarding device and detects whether the packet is a layer 3 packet.
  • the packet if yes, detect whether the packet meets the correct sending condition, where the correct sending condition is that the packet carries the newly added packet header and the forwarding port number pre-agreed with the first forwarding device , if yes, extract the Layer 2 packet encapsulated in the packet, and send the Layer 2 packet to the second user equipment, where the Layer 2 packet is a packet sent by the first user equipment; the second The user equipment receives the packet sent by the second forwarding device.
  • An embodiment of the present application further provides a network device, the device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores data that can be processed by the at least one processor The instructions are executed by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the message transmission method described above.
  • Embodiments of the present application further provide a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the above-described message transmission method is implemented.
  • FIG. 1 is a flowchart 1 of a message transmission method provided by a first embodiment of the present application
  • FIG. 2 is a flowchart of step 102 in the message transmission method provided by the first embodiment of the present application shown in FIG. 1;
  • FIG. 3 is a second flowchart of the message transmission method provided by the first embodiment of the present application.
  • FIG. 5 is a flowchart of a message transmission method provided by a third embodiment of the present application.
  • FIG. 6 is an application scenario involved in the message transmission method provided by the third embodiment of the present application shown in FIG. 5;
  • FIG. 7 is a schematic structural diagram of a message transmission system provided by a fourth embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a network device provided by a fifth embodiment of the present application.
  • the main purpose of the embodiments of the present application is to propose a message transmission method, system, network device and storage medium, aiming to realize wireless communication between Layer 2 devices without modifying or replacing existing Layer 2 devices .
  • the first embodiment of the present application relates to a message transmission method, which is applied to a first forwarding device, as shown in FIG. 1 , and specifically includes:
  • Step 101 Receive a Layer 2 packet sent by the first user equipment.
  • a Layer 2 packet of the first user equipment on the user side is received, where the first user equipment is a Layer 2 device, and the Layer 2 packet is communicated through a MAC address.
  • Step 102 Obtain the forwarding port number and the newly added message header and determine the message encapsulation mode.
  • step 102 includes the following steps:
  • Step 201 determining a second forwarding device.
  • Step 202 Obtain the forwarding port number and the newly added message header pre-agreed with the second forwarding device.
  • the newly added message header agreed upon by the first forwarding device and the second forwarding device may be any field.
  • Step 203 Obtain the user's transmission requirements for Layer 2 packets.
  • the user's transmission requirements for Layer 2 packets may include reliability requirements, real-time requirements, etc.
  • the transmission requirements for obtaining Layer 2 packets may be manually set by the user, or may be pre-stored agreed transmission requirements.
  • the specific manner of acquisition is not limited, and may be a manner that can accurately acquire the current actual needs of both parties in communication.
  • Step 204 Determine the packet encapsulation mode according to the transmission requirement.
  • the packet encapsulation methods include Transmission Control Protocol (Transmission Control Protocol, TCP) encapsulation and User Datagram Protocol (User Datagram Protocol, UDP) encapsulation.
  • TCP Transmission Control Protocol
  • UDP User Datagram Protocol
  • the forwarding port number, the newly added packet header, and the IP address of the second forwarding device may be stored in advance, or may be acquired from a peripheral terminal. If the forwarding port number, the newly added packet header and the IP address of the second forwarding device are pre-stored, the forwarding port number, the newly added packet header and the IP address of the second forwarding device can be manually entered by the user. Store; if the forwarding port number, the newly added packet header and the IP address of the second forwarding device are obtained from the peripheral terminal, as shown in Figure 3, before step 101, it also includes:
  • Step 301 receiving a user instruction.
  • an open page is provided for the user, the user sets the relevant data through the operation, and the page generates the corresponding user instruction and conveys the user instruction.
  • Step 302 Pre-agreed forwarding port numbers, add packets, and set the IP address of the second forwarding device according to user instructions.
  • the user instruction may only make an agreement with the current communication two parties, or may make an agreement with all the forwarding devices.
  • any one, any two or three items of pre-appointing forwarding port numbers, pre-appointing new packets, and setting the IP address of the second forwarding device are executed according to user instructions.
  • Step 103 Encapsulate the Layer 2 packet according to the packet encapsulation mode, the forwarding port number and the newly added packet header to obtain the Layer 3 packet.
  • the packet encapsulation method it is determined whether to generate a UDP header carrying the forwarding port number or a TCP header as the protocol packet header, and also need to obtain the IP header, and then according to the obtained protocol packet header, IP header and newly added packet
  • the packet header encapsulates the Layer 2 packet to obtain a Layer 3 packet for wireless communication.
  • the source IP address in the IP header is the IP address allocated after data dialing
  • the destination IP address in the IP header is the IP address of the second forwarding device that receives Layer 3 packets; whether it is a UDP header or a TCP
  • the headers all carry the forwarding port number determined in step 102 and several fields that are used as depacketization markers.
  • Step 104 Send the Layer 3 packet to the second forwarding device.
  • the second forwarding device may include one device or multiple devices.
  • first and second in the first forwarding device and the second forwarding device involved in this application indicate that the two devices are not the same device.
  • the functions of the first forwarding device and the second forwarding device can be configured on the same device, and then play different roles in different communication processes according to the source of the received packets. After receiving the message from the user equipment, it presents the function of the above-mentioned first forwarding device, so it is defined as the first forwarding device in this communication process; in another communication process, the forwarding device receives messages from other forwarding devices, The function of the second forwarding device is presented, and is then defined as the second forwarding device in this communication process.
  • the first forwarding device after receiving the Layer 2 packet sent by the first user equipment, the first forwarding device obtains the forwarding port number and the newly added packet header, determines the packet encapsulation method, and then determines the packet encapsulation method according to the Packet encapsulation method, forwarding port number, and new header to encapsulate Layer 2 packets to obtain Layer 3 packets capable of wireless communication, and then use wireless communication to send Layer 3 packets to the second forwarding device , so that when the second forwarding device receives the Layer 3 packet, it can directly extract the Layer 2 packet sent by the first user equipment encapsulated in the Layer 3 packet, and directly send the Layer 2 packet to the second user equipment.
  • Wireless communication between the first user equipment and the second user equipment is mapped to the packet sent by the first user equipment.
  • the packets can be wirelessly communicated, and the second forwarding device directly extracts the Layer 2 packets sent by the first user equipment encapsulated in the Layer 3 packets. It enables the Layer 3 packets to be restored to the Layer 2 packets that can be received by the second user equipment, so as to enable wireless communication between existing user equipments without the need to modify or replace the user equipment. Purpose.
  • the second embodiment of the present application relates to a message transmission method, which is applied to a second forwarding device, as shown in FIG. 4 , and specifically includes:
  • Step 401 Receive a packet sent by a first forwarding device.
  • the packet sent by the first forwarding device on the network side is received.
  • Step 402 check whether the packet is a Layer 3 packet, if yes, go to Step 403 , if not, go to Step 404 .
  • the packet carries the newly added packet header and the forwarding port number. If so, it is a Layer 3 packet; if not, it is a Layer 2 packet.
  • Step 403 If it is detected that the newly added packet header and the forwarding port number are the packet header and port number pre-agreed with the first forwarding device, extract the Layer 2 packet encapsulated in the packet, and convert the Layer 2 packet into the packet. sent to the second user equipment.
  • the Layer 2 device received by the first forwarding device is used as the data part of the Layer 3 packet.
  • the second forwarding device receives the Layer 3 packet, it first detects the Check whether the newly added packet header and forwarding port number are the packet header and port number pre-agreed with the first forwarding device to detect whether the Layer 3 packet is correctly received, and only extract the data part if it is sent correctly.
  • Step 404 Send the packet to the second user equipment.
  • the second user equipment is a Layer 2 device, supports receiving Layer 2 packets, and is located on a virtual local area network (Virtual Local Area Network, VLAN) side.
  • VLAN Virtual Local Area Network
  • this embodiment can receive both Layer 3 packets and Layer 2 packets. After the Layer 3 packets are correctly received, the encapsulated Layer 2 packets can be extracted, and then all the obtained Layer 2 packets can be extracted. The layer packet is sent to the second user equipment to complete the wireless communication between the first user equipment and the second user equipment. Since both Layer 2 packets and Layer 3 packets can be processed, the diversity of packets that can be processed by the second forwarding device is improved, and the technical solutions provided by the embodiments of the present application are more applicable.
  • the forwarding devices in the third embodiment of the present application are all routers (router 1 and router 2). ), the sender of the Layer 2 message is device A, the receiver is device B, and the encapsulation method is UDP encapsulation.
  • Long Term Evolution Long Term Evolution (Long Term Evolution, LTE dial-up, router 2 also has 5G/LTE dial-up on the peer end, and router 2 accesses device B as an example.)
  • the message transmission method provided by the third embodiment of the present application includes:
  • Step 601 Device A sends a Layer 2 packet to Router 1.
  • Step 602 Router 1 determines that the packet encapsulation mode is UDP encapsulation, determines the UDP header carrying the forwarding port number 1000, the corresponding IP header and the newly added packet header, and encapsulates the Layer 2 packet to obtain the Layer 3 packet.
  • Step 603 Router 1 sends a Layer 3 packet to Router 2.
  • Step 604 router 2 detects that the newly added packet header and forwarding port number 1000 carried by the received Layer 3 packet is the forwarding port number and the newly added packet header agreed upon by Router 1 and Router 2, and extracts the Layer 3 packet. Layer 2 packets encapsulated in .
  • Step 605 Router 2 sends the Layer 2 packet to Device B.
  • the first forwarding device after receiving the Layer 2 packet sent by the first user equipment, the first forwarding device obtains the forwarding port number and the newly added packet header, determines the packet encapsulation method, and then determines the packet encapsulation method according to the Packet encapsulation method, forwarding port number, and new header to encapsulate Layer 2 packets to obtain Layer 3 packets capable of wireless communication, and then use wireless communication to send Layer 3 packets to the second forwarding device , so that when the second forwarding device receives the Layer 3 packet, it can directly extract the Layer 2 packet sent by the first user equipment encapsulated in the Layer 3 packet, and directly send the Layer 2 packet to the second user equipment.
  • Wireless communication between the first user equipment and the second user equipment is mapped to the packet sent by the first user equipment.
  • the packets can be wirelessly communicated, and the second forwarding device directly extracts the Layer 2 packets sent by the first user equipment encapsulated in the Layer 3 packets. It enables the Layer 3 packets to be restored to the Layer 2 packets that can be received by the second user equipment, so as to enable wireless communication between existing user equipments without the need to modify or replace the user equipment. Purpose.
  • the fourth embodiment of the present application relates to a message transmission system, as shown in FIG. 7 , including:
  • the first user equipment 701 is configured to send a Layer 2 packet to the first forwarding device.
  • the first forwarding device 702 is configured to receive the Layer 2 packet sent by the first user equipment, determine the forwarding port number, the packet encapsulation method, and the newly added packet header, and determine the forwarding port number, the packet encapsulation method, and the newly added packet header according to the packet encapsulation method, the forwarding port number, and the newly added packet.
  • the header encapsulates the Layer 2 packet, obtains the Layer 3 packet, and sends the Layer 3 packet to the second forwarding device.
  • the second forwarding device 703 receives the packet sent by the first forwarding device, detects whether the packet is a Layer 3 packet, and if so, detects whether the packet meets the correct sending condition, where the correct sending condition is that the packet is carried and the first forwarding The newly added packet header and forwarding port number pre-agreed between the devices. If yes, extract the Layer 2 packet encapsulated in the packet and send the Layer 2 packet to the second user equipment, where the Layer 2 packet is the first user equipment. message sent;
  • the second user equipment 704 receives the packet sent by the second forwarding device.
  • this embodiment is a system embodiment corresponding to the first to third embodiments, and this embodiment can be implemented in cooperation with the first to third embodiments.
  • the related technical details mentioned in the first to third embodiments are still valid in this embodiment, and are not repeated here in order to reduce repetition.
  • the related technical details mentioned in this embodiment can also be applied to the first to third embodiments.
  • a logical unit may be a physical unit, a part of a physical unit, or multiple physical units.
  • a composite implementation of the unit in order to highlight the innovative part of the present application, this embodiment does not introduce units that are not closely related to solving the technical problem raised by the present application, but this does not mean that there are no other units in this embodiment.
  • the fifth embodiment of the present application relates to a network device, as shown in FIG. 8 , comprising: at least one processor 801; and a memory 802 communicatively connected to the at least one processor 801; An instruction executed by one processor 801, where the instruction is executed by at least one processor 801, so that at least one processor 801 can execute the packet transmission method described in any of the foregoing method embodiments.
  • the memory 802 and the processor 801 are connected by a bus, and the bus may include any number of interconnected buses and bridges, and the bus connects one or more processors 801 and various circuits of the memory 802 together.
  • the bus may also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein.
  • the bus interface provides the interface between the bus and the transceiver.
  • a transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other devices over a transmission medium.
  • the data processed by the processor 801 is transmitted on the wireless medium through the antenna, and further, the antenna also receives the data and transmits the data to the processor 801 .
  • the processor 801 is responsible for managing the bus and general processing, and may also provide various functions including timing, peripheral interface, voltage regulation, power management, and other control functions.
  • the memory 802 may be used to store data used by the processor 801 when performing operations.
  • the sixth embodiment of the present application relates to a computer-readable storage medium storing a computer program.
  • the above method embodiments are implemented when the computer program is executed by the processor.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请的实施例涉及通信技术领域，提出了一种报文传输方法、系统、网络设备和电子介质。报文传输方法包括：接收第一用户设备发送的二层报文；获取转发端口号和新增报文头部并确定报文封装方式；根据所述报文封装方式、所述转发端口号和所述新增报文头对所述二层报文进行封装，获取三层报文；将所述三层报文发送给第二转发设备。

Description

报文传输方法、系统、网络设备和存储介质
相关申请的交叉引用
本申请基于申请号为“202011538853.2”、申请日为2020年12月23日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此以引入方式并入本申请。
技术领域
本申请的实施例涉及通信技术领域，特别涉及一种报文传输方法、系统、网络设备和存储介质。
背景技术
数据类产品通常是转发三层报文以满足用户的通信需求，但是有一些特殊的场景，如电力行业、大飞机等部分工业场景下，使用二层设备进行有线通信，其通信过程为：发送方在报文中封装数据和介质访问控制(Medium Access Control，MAC)地址形成二层报文，然后将二层报文通过光纤传输到接收方，供接收方使用。
然而，第五代移动通信技术(5th-Generation Mobile Communication Technology，5G)时代下，工业设备的应用场景越来越多，设备间的通信也越来越频繁。通过光纤进行的有线通信不能满足所有的工业场景下二层设备间的通信需求，且现有的二层设备只能发送和接收二层报文，不能支持无线通信采用的三层报文。若对现有的工业设备进行改造或替换以实现对三层报文的支持，进而实现无线通信，会由于涉及的工业设备较多，使得实现复杂且难度大，替换下来的工业设备也会导致资源浪费。
发明内容
本申请实施例提供了一种报文传输方法，所述方法包括以下步骤：接收第一用户设备发送的二层报文；获取转发端口号和新增报文头部并确定报文封装方式；根据所述报文封装方式、所述转发端口号和所述新增报文头对所述二层报文进行封装，获取三层报文；将所述三层报文发送给第二转发设备。
本申请实施例还提出了一种报文传输方法，包括：接收第一转发设备发送的报文；检测所述报文是否为三层报文，其中，所述三层报文为携带新增报文头和转发端口号的报文；若是，检测所述新增报文头和所述转发端口号是否为与所述第一转发设备之间预先约定的报文头和端口号；若是，提取所述报文中的数据部分，将所述数据部分发送给第二用户设备，其中，所述数据部分为所述第一用户设备发送的二层报文。
本申请实施例还提出了一种报文传输系统，包括：第一用户设备，用于向第一转发设备发送二层报文；第一转发设备，用于接收所述第一用户设备发送的所述二层报文，确定转发端口号、报文封装方式和新增报文头，根据所述报文封装方式、所述转发端口号和所述新增报文头对所述二层报文进行封装，获取三层报文，将所述三层报文发送给第二转发设备；第二转发设备，接收所述第一转发设备发送的报文，检测所述报文是否为三层报文，若是，检测所述报文是否满足正确发送条件，其中，所述正确发送条件为所述报文携带与所述第一转发设备之间预先约定的新增报文头和转发端口号，若是，提取所述报文中封装的二层报文， 将所述二层发送给第二用户设备，其中，所述二层报文为所述第一用户设备发送的报文；第二用户设备，接收所述第二转发设备发送的报文。
本申请实施例还提出了一种网络设备，所述设备包括：至少一个处理器；以及，与所述至少一个处理器通信连接的存储器；其中，所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行以上所述的报文传输方法。
本申请的实施例还提供了一种计算机可读存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现以上所述的报文传输方法。
附图说明
图1是本申请第一实施例提供的报文传输方法的流程图一；
图2是图1所示的本申请的第一实施例提供的报文传输方法中步骤102的流程图；
图3是本申请第一实施例提供的报文传输方法的流程图二；
图4是本申请第二实施例提供的报文传输方法的流程图；
图5是本申请第三实施例提供的报文传输方法的流程图；
图6是图5所示的本申请的第三实施例提供的报文传输方法中涉及的应用场景；
图7是本申请第四实施例提供的报文传输系统的结构示意图；
图8是本申请第五实施例提供的网络设备的结构示意图。
具体实施方式
本申请实施例的主要目的在于提出一种报文传输方法、系统、网络设备和存储介质，旨在实现既能够实现二层设备间的无线通信，又不需要改造或替换现有的二层设备。
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请的各实施例进行详细的阐述。然而，本领域的普通技术人员可以理解，在本申请各实施例中，为了使读者更好地理解本申请而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施例的种种变化和修改，也可以实现本申请所要求保护的技术方案。以下各个实施例的划分是为了描述方便，不应对本申请的具体实现方式构成任何限定，各个实施例在不矛盾的前提下可以相互结合相互引用。
本申请的第一实施例涉及一种报文传输方法，应用于第一转发设备，如图1所示，具体包括：
步骤101，接收第一用户设备发送的二层报文。
具体地说，接收用户侧的第一用户设备的二层报文，其中，第一用户设备为二层设备，二层报文通过MAC地址进行通信。
步骤102，获取转发端口号和新增报文头部并确定报文封装方式。
具体地说，如图2所示，步骤102包括以下步骤：
步骤201，确定第二转发设备。
步骤202，获取与第二转发设备之间预先约定的转发端口号和新增报文头。
本实施例不对新增报文头的内容进行限定，在实际实现的过程中，第一转发设备和第二转发设备约定的新增报文头可以是任意一种字段。
步骤203，获取用户对二层报文的传输需求。
具体地说，用户对二层报文的传输需求可以包括可靠性需求、实时性需求等，获取二层报文的传输需求可以是用户手动设置，也可以是预先存储的约定好的传输需求，不对获取的具体方式进行限定，可以是能够准确获取通信双方当前实际需求的方式。
步骤204，根据传输需求确定报文封装方式。
具体地说，报文封装方式包括传输控制协议(Transmission Control Protocol，TCP)封装和用户数据报协议(User Datagram Protocol，UDP)封装。当传输需求为保证报文传输可靠性且保证不丢包，则报文封装方式为TCP封装；当传输需求为保证报文传输实时性且对可靠性要求略低，则报文封装方式为UDP封装。
需要说明的是，在本实施例中，转发端口号、新增报文头以及第二转发设备的IP地址，可以是预先存储的，也可以是从外设终端获取的。如果转发端口号、新增报文头以及第二转发设备的IP地址为预先存储的，该转发端口号、新增报文头以及第二转发设备的IP地址可以由用户通过手动录入的方式进行存储；如果转发端口号、新增报文头以及第二转发设备的IP地址是从外设终端获取的，如图3所示，在步骤101之前，还包括：
步骤301，接收用户指令。
具体地说，为用户提供一个开放页面，用户通过操作自行设置相关数据，页面生成相应的用户指令并将用户指令传达出去。
步骤302，根据用户指令预先约定转发端口号、新增报文并设置第二转发设备的IP地址。
具体地说，用户指令可以只对当前的通信双方进行约定，也可以对所有的转发设备都进行约定。实际应用时，根据用户指令执行预先约定转发端口号、预先约定新增报文和设置第二转发设备的IP地址中的任意一项、任意两项或三项。
步骤103，根据报文封装方式、转发端口号和新增报文头对二层报文进行封装，获取三层报文。
具体地说，根据报文封装方式确定是生成携带转发端口号的UDP头还是TCP头作为协议报文头，同时还需要获取IP头，然后根据得到的协议报文头、IP头和新增报文头对二层报文进行封装，得到用于无线通信的三层报文。
需要说明的是，IP头中的源IP地址是进行数据拨号后分配的IP地址，IP头中的目的IP地址是接收三层报文的第二转发设备的IP地址；不论是UDP头还是TCP头都会携带步骤102确定的转发端口号和若干作为解包标记的字段。
步骤104，将三层报文发送给第二转发设备。
具体的说，第二转发设备可以包含一台设备也可以包括多台设备。
需要说明的是，本申请中涉及到的第一转发设备和第二转发设备中的“第一”“第二”表达的是两个设备不是同一台设备。第一转发设备和第二转发设备的功能可以配置到同一台设备上，然后根据接收到的报文的来源在不同的通信过程中发挥不同的作用，如：在一个通信过程中，某转发设备接收到来自用户设备的报文，呈现上述第一转发设备的功能，于是在这个通信过程中被定义为第一转发设备；在另外一个通信过程中该转发设备接收来自其他转发设备的报文，呈现第二转发设备的功能，于是在这个通信过程中被定义为第二转发设备。
本实施例相对于现有技术而言，第一转发设备在接收到第一用户设备发送的二层报文之后，获取转发端口号和新增报文头部并确定报文封装方式，然后根据报文封装方式、转发端口号和新增报文头对二层报文进行封装，获取能够进行无线通信的三层报文，然后采用无线 通信的方式将三层报文发送给第二转发设备，使得第二转发设备在接收到三层报文时，能够直接提取三层报文中封装的第一用户设备发送的二层报文，直接将二层报文发送给第二用户设备，完成第一用户设备和第二用户设备之间的无线通信。由于使用第一转发设备对二层报文进行封装得到三层报文，使得报文可以进行无线通信，且第二转发设备直接提取三层报文中封装的第一用户设备发送的二层报文，使得三层报文能够恢复成第二用户设备可接收的二层报文，达到了既能够使得现有的用户设备之间可以进行无线通信，又不需要对用户设备进行改造或者替换的目的。
本申请的第二实施例涉及一种报文传输方法，应用于第二转发设备，如图4所示，具体包括：
步骤401，接收第一转发设备发送的报文。
具体地说，接收网络侧第一转发设备发来的报文。
步骤402，检测报文是否为三层报文，若是，执行步骤403，若否，执行步骤404。
具体地说，检测报文是否携带了新增报文头和转发端口号，若是，为三层报文，若否，为二层报文。
步骤403，若将检测到新增报文头和转发端口号为与第一转发设备之间预先约定的报文头和端口号，提取报文中封装的二层报文，将二层报文发送给第二用户设备。
具体地说，在第一转发设备封装的过程中，将第一转发设备接收到的二层设备作为三层报文的数据部分，当第二转发设备接收到三层报文时，首先通过检测新增报文头和转发端口号是否为与第一转发设备之间预先约定的报文头和端口号来检测是否正确接收到三层报文，若发送正确，才将数据部分给提取出来。
步骤404，将报文发送给第二用户设备。
具体地说，第二用户设备为二层设备，支持接收二层报文，位于虚拟局域网(Virtual Local Area Network，VLAN)侧。
本实施例相对于现有技术而言，既能够接收三层报文又能够接收二层报文，正确接收到三层报文后可以提取其中封装的二层报文，然后将获取的所有二层报文发送给第二用户设备，完成第一用户设备和第二用户设备之间的无线通信。由于既能够处理二层报文又能够处理三层报文，提高了第二转发设备能够处理的报文的多样性，使得本申请实施例提供的技术方案适用性更强。
为了使本领域技术人员能够更清楚地理解以上本申请第一实施例和第二实施例公开的报文传输方法整体流程，本申请第三实施例以转发设备均为路由器(路由器1和路由器2)，二层报文发送方为设备A、接收方为设备B，封装方式为UDP封装，报文传输方法应用在如图6所示的设备A通过网线连接到路由器1，路由器1进行5G/长期演进(Long Term Evolution，LTE拨号，对端也存在同样进行了5G/LTE拨号的路由器2，路由器2下接入设备B的场景下为例进行说明。
如图5所示，本申请的第三实施例提供的报文传输方法，包括：
步骤601，设备A向路由器1发送二层报文。
步骤602，路由器1确定报文封装方式为UDP封装，确定携带转发端口号1000的UDP头、相应的IP头和新增报文头并对二层报文进行封装，获取三层报文。
步骤603，路由器1向路由器2发送三层报文。
步骤604，路由器2检测到接收到三层报文携带的新增报文头和转发端口号1000为路由器1和路由器2约定好的转发端口号和新增报文头，提取出三层报文中封装的二层报文。
步骤605，路由器2将二层报文发送给设备B。
本实施例相对于现有技术而言，第一转发设备在接收到第一用户设备发送的二层报文之后，获取转发端口号和新增报文头部并确定报文封装方式，然后根据报文封装方式、转发端口号和新增报文头对二层报文进行封装，获取能够进行无线通信的三层报文，然后采用无线通信的方式将三层报文发送给第二转发设备，使得第二转发设备在接收到三层报文时，能够直接提取三层报文中封装的第一用户设备发送的二层报文，直接将二层报文发送给第二用户设备，完成第一用户设备和第二用户设备之间的无线通信。由于使用第一转发设备对二层报文进行封装得到三层报文，使得报文可以进行无线通信，且第二转发设备直接提取三层报文中封装的第一用户设备发送的二层报文，使得三层报文能够恢复成第二用户设备可接收的二层报文，达到了既能够使得现有的用户设备之间可以进行无线通信，又不需要对用户设备进行改造或者替换的目的。
此外，应当理解的是，上面各种方法的步骤划分，只是为了描述清楚，实现时可以合并为一个步骤或者对某些步骤进行拆分，分解为多个步骤，只要包括相同的逻辑关系，都在本专利的保护范围内；对算法中或者流程中添加无关紧要的修改或者引入无关紧要的设计，但不改变其算法和流程的核心设计都在该专利的保护范围内。
本申请第四实施例涉及一种报文传输系统，如图7所示，包括：
第一用户设备701，用于向第一转发设备发送二层报文。
第一转发设备702，用于接收第一用户设备发送的二层报文，确定转发端口号、报文封装方式和新增报文头，根据报文封装方式、转发端口号和新增报文头对二层报文进行封装，获取三层报文，将三层报文发送给第二转发设备。
第二转发设备703，接收第一转发设备发送的报文，检测报文是否为三层报文，若是，检测报文是否满足正确发送条件，其中，正确发送条件为报文携带与第一转发设备之间预先约定的新增报文头和转发端口号，若是，提取报文中封装的二层报文，将二层发送给第二用户设备，其中，二层报文为第一用户设备发送的报文；
第二用户设备704，接收第二转发设备发送的报文。
不难发现，本实施例为与第一至三实施例相对应的系统实施例，本实施例可与第一至三实施例互相配合实施。第一至三实施例中提到的相关技术细节在本实施例中依然有效，为了减少重复，这里不再赘述。相应地，本实施例中提到的相关技术细节也可应用在第一至三实施例中。
值得一提的是，本实施例中所涉及到的各模块均为逻辑模块，在实际应用中，一个逻辑单元可以是一个物理单元，也可以是一个物理单元的一部分，还可以以多个物理单元的组合实现。此外，为了突出本申请的创新部分，本实施例中并没有将与解决本申请所提出的技术问题关系不太密切的单元引入，但这并不表明本实施例中不存在其它的单元。
本申请的第五实施例涉及一种网络设备，如图8所示，包括：至少一个处理器801；以及，与至少一个处理器801通信连接的存储器802；其中，存储器802存储有可被至少一个处理器801执行的指令，指令被至少一个处理器801执行，以使至少一个处理器801能够执行上述任一方法实施例所描述的报文传输方法。
其中，存储器802和处理器801采用总线方式连接，总线可以包括任意数量的互联的总线和桥，总线将一个或多个处理器801和存储器802的各种电路连接在一起。总线还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口在总线和收发机之间提供接口。收发机可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器801处理的数据通过天线在无线介质上进行传输，进一步，天线还接收数据并将数据传输给处理器801。
处理器801负责管理总线和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器802可以被用于存储处理器801在执行操作时所使用的数据。
本申请第六实施例涉及一种计算机可读存储介质，存储有计算机程序。计算机程序被处理器执行时实现上述方法实施例。
即，本领域技术人员可以理解，实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域的普通技术人员可以理解，上述各实施例是实现本申请的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本申请的精神和范围。

Claims (10)

  1. 一种报文传输方法，包括：
    接收第一用户设备发送的二层报文；
    获取转发端口号和新增报文头部并确定报文封装方式；
    根据所述报文封装方式、所述转发端口号和所述新增报文头对所述二层报文进行封装，获取三层报文；
    将所述三层报文发送给第二转发设备。
  2. 根据权利要求1所述的方法，其中，所述获取转发端口号和新增报文头部并确定报文封装方式，包括：
    确定所述第二转发设备；
    获取与所述第二转发设备之间预先约定的所述转发端口号和所述新增报文头；
    获取用户对所述二层报文的传输需求；
    根据所述传输需求确定所述报文封装方式。
  3. 根据权利要求1或2所述的方法，其中，所述根据所述报文封装方式、所述转发端口号和所述新增报文头对所述二层报文进行封装，获取三层报文，包括：
    进行数据拨号并将拨号后分配的IP地址确定为源IP地址；
    将所述第二转发设备预设的IP地址确定为目的IP地址；
    根据所述源IP地址和所述目的IP地址获取IP头；
    根据所述报文封装方式和所述转发端口号获取协议报文头；
    对所述IP头、所述协议报文头、所述新增报文头和所述二层报文进行封装，获取所述三层报文。
  4. 根据权利要求1至3中任一项所述的方法，其中，所述报文封装方式为TCP封装或UDP封装。
  5. 根据权利要求1至4中任一项所述的方法，其中，还包括：
    接收用户指令；
    根据所述用户指令预先约定所述转发端口号、所述新增报文并设置所述第二转发设备的IP地址。
  6. 一种报文传输方法，包括：
    接收第一转发设备发送的报文；
    检测所述报文是否为三层报文，其中，所述三层报文为携带新增报文头和转发端口号的报文；
    若是，检测所述新增报文头和所述转发端口号是否为与所述第一转发设备之间预先约定的报文头和端口号；
    若是，提取所述报文中封装的二层报文，将所述二层报文发送给第二用户设备，其中，所述二层报文为第一用户设备发送的报文。
  7. 根据权利要求6所述的方法，其中，还包括：
    若所述报文不为三层报文，将所述报文发送给所述第二用户设备。
  8. 一种报文传输系统，包括：
    第一用户设备，用于向第一转发设备发送二层报文；
    第一转发设备，用于接收所述第一用户设备发送的所述二层报文，确定转发端口号、报文封装方式和新增报文头，根据所述报文封装方式、所述转发端口号和所述新增报文头对所述二层报文进行封装，获取三层报文，将所述三层报文发送给第二转发设备；
    第二转发设备，接收所述第一转发设备发送的报文，检测所述报文是否为三层报文，若是，检测所述报文是否满足正确发送条件，其中，所述正确发送条件为所述报文携带与所述第一转发设备之间预先约定的新增报文头和转发端口号，若是，提取所述报文中封装的二层报文，将所述二层发送给第二用户设备，其中，所述二层报文为所述第一用户设备发送的报文；
    第二用户设备，接收所述第二转发设备发送的报文。
  9. 一种网络设备，包括：
    至少一个处理器；以及，
    与所述至少一个处理器通信连接的存储器；其中，
    所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行如权利要求1至5中任意一项所述报文传输方法，或者能够执行如权利要求6或7所述报文传输方法。
  10. 一种计算机可读存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1至5中任一项所述的报文传输方法，或者能够实现如权利要求6或7所述报文传输方法。
PCT/CN2021/126781 2020-12-23 2021-10-27 报文传输方法、系统、网络设备和存储介质 WO2022134840A1 (zh)

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