Configurable multi-path Ethernet extension method and device based on APPIDs

Abstract

The invention discloses a configurable multi-path Ethernet extension method and device based on APPIDs. The method comprises the steps that Ethernet physical link data decoding is conducted on a received Ethernet frame through an Ethernet PHY and MAC; one path of Ethernet data in an RAM receiving buffer zone are copied into multi-path Ethernet data which are stored in a multi-path Ethernet transmitting buffer region of an RAM; an APPID configuration instruction is received, and analysis is completed; modification is conducted on APPID domains of multi-path Ethernet messages in the multi-path Ethernet transmitting buffer region according to the APPIDs set in the analyzed configuration instruction; the multi-path Ethernet messages which are stored in the multi-path Ethernet transmitting buffer region and provided with totally different APPIDs are sent to the Ethernet chip PHY and MAC used for output; the Ethernet data are coded and sent to corresponding Ethernet output receiving and sending modules to complete sending of the Ethernet messages through the Ethernet chip PHY and MAC used for output. According to the configurable multi-path Ethernet extension method and device based on the APPIDs, the functions of repacking Ethernet data packets and distributing the repacked Ethernet data to different hardware ports of the Ethernet according to configuration of the APPIDs are achieved.

Description

technical field [0001] The invention relates to the field of Ethernet expansion, in particular to an APPID-based configurable multi-channel Ethernet expansion method and device. Background technique [0002] Smart substation is one of the core platforms for energy conversion and control in the construction of a sound smart grid, and is an important part of the smart grid. At present, thousands of smart substations have been put into operation. In smart substations, optical fiber Ethernet is the nervous system in smart substations. Whether it is smart devices in smart substations or corresponding smart substation test instruments, optical fiber is inseparable. Ethernet communication. With the development of smart substations and the new generation of smart substations, the internal optical fiber communication system of smart substations is becoming more and more complex. Sometimes it is necessary to combine the communication packets in multiple optical fiber Ethernets into o...

AI Technical Summary

Problems solved by technology

With the development of smart substations and the new generation of smart substations, the internal optical fiber communication system of smart substations is becoming more and more complex. Sometimes it is necessary to combine the communication packets in multiple optical fiber Ethernets into one optical fiber for transmission, and sometimes it is necessary to combine the communication packets on one optical fiber. Multiple Ethernet packets are distributed to different fiber-optic Ethernets, and it is necessary to accurately measure the receiving and sending times of Ethernet packets, but traditional switches cannot complete the APPID (ApplicationIdentifier, application identifier) ​​in multiple Ethernet packets. Modification and configuration can only complete the link connection transmission function

Although switches have been widely used in civil and industrial information industries, whether they are cut-through or store-and-forward switches, their main function is to forward Ethernet data packets from one port to another one or more ports according to the MAC address. Unable to modify the APPID in the Ethernet data frame and then forward it to other ports

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