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Data transmission method and forwarding equipment

A technology for transmitting data and forwarding equipment, which is applied in the field of data transmission, and can solve problems such as abnormalities in data transmission services, failure to detect errors in Ethernet frames, etc.

Pending Publication Date: 2022-04-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the Ethernet frame received by the destination device contains many errors, the destination device may fail to detect that the Ethernet frame contains errors by performing a cyclic redundancy check (CRC) check on the received Ethernet frame.
The above will lead to an exception in the data transmission business

Method used

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  • Data transmission method and forwarding equipment
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  • Data transmission method and forwarding equipment

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Experimental program
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Embodiment Construction

[0057] The technical solution in this application will be described below with reference to the accompanying drawings.

[0058] The PHY circuit in this application refers to a circuit for performing the functions of the physical layer defined by the Ethernet standard. The Ethernet standard may be an Ethernet standard published by IEEE. For example, the Ethernet standard may be IEEE802.3-2015. For example, functions of the physical layer may include functions of a physical coding sublayer (physical coding sublayer, PCS) and functions of a physical medium attachment (physical medium attachment, PMA) sublayer.

[0059] The MAC circuit in this application refers to a circuit for performing the function of media access control (media access control, MAC) defined by the Ethernet standard. The Ethernet standard may be an Ethernet standard published by IEEE. For example, the Ethernet standard may be IEEE802.3-2015. The function of MAC is located in the data link layer. The functi...

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PUM

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Abstract

The invention provides a data transmission method, which comprises the following steps that: first forwarding equipment receives a plurality of fragments of an Ethernet frame, the plurality of fragments comprise a first fragment and a first fragment, and the first fragment comprises a destination media access control (MAC) address field; the first forwarding device determines a frame check sequence (FCS) value of the Ethernet frame according to the plurality of fragments; the first forwarding device determines that an error occurs in the Ethernet frame based on the FCS value, the first forwarding device modifies the first fragment into a second fragment in response to the determination that the error occurs in the Ethernet frame, and the second fragment comprises second type indication information and second to-be-transmitted data, the second type indication information is used for indicating that the type of the second to-be-transmitted data is a control word, the value of the first to-be-transmitted data is not equal to the value of the second to-be-transmitted data, and the second to-be-transmitted data is used for indicating that the Ethernet frame has an error; and the first forwarding device sends the second fragment to the destination device. According to the method provided by the invention, the success rate of detecting that the Ethernet frame contains the error by the target equipment can be improved.

Description

[0001] This application is a divisional application of the application submitted to the China Intellectual Property Office with the application date of March 31, 2018, the application number 201880091993.4, and the invention name "Data Transmission Method and Forwarding Equipment". technical field [0002] The present application relates to the communication field, and more specifically, to a data transmission method and a forwarding device in the communication field. Background technique [0003] The Industrial Internet of Things and the Internet of Vehicles usually include many forwarding devices. The data sent by the source device is forwarded by multiple forwarding devices to reach the destination device. Multiple forwarding devices can form a chain network or a ring network. [0004] When data is forwarded via a chain network or a ring network, each forwarding device may introduce some delay. The above makes the end-to-end delay unable to meet the requirements of some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L45/00H04L45/74
CPCH04L1/0083H04L1/0061H04L1/0057H04L45/74H04L45/66H04L69/22H04L69/40H04L69/324H04L1/0079H04L67/563G06F11/1004H04L1/0072H04L1/0076
Inventor 王童童王心远
Owner HUAWEI TECH CO LTD