FPGA based redundant double-network-interface configurable Ethernet IP core

Abstract

The invention provides an FPGA based redundant double-network-interface configurable Ethernet IP core capable of adapting to high-stability and high-reliability Ethernet data transmission requirements. The two network interfaces of the FPGA based redundant double-network-interface configurable Ethernet IP core are mutually a primary network interface and a secondary network interface, and have the same MAC address and IP address; the two network interfaces in the working process are connected with the same network respectively through a network line; the Ethernet IP core internally comprises an Ethernet reception module, an Ethernet frame filtering module, a received frame number discrimination module, a reception caching module, an Ethernet transmitted frame packaging module and an Ethernet frame transmission module; the Ethernet frame filtering module is divided into two filtering levels; the received frame number discrimination module is used for discriminating the received frame numbers in the received data frames which satisfy a user filtration rule are continuous so as to detect whether network frame loss occurs in the Ethernet transmission process.

Description

technical field [0001] The invention relates to an FPGA-based Ethernet IP core. Background technique [0002] In today's society, Ethernet-based data communication transmission has penetrated into various fields of our lives. Among them, in video monitoring, due to the reliability and convenience of Ethernet communication, the real-time video monitoring system using Ethernet has been widely used in shopping malls, transportation, industry and other fields. [0003] At present, in an ordinary video monitoring system, a camera has only one network transmission path, and the network camera can be connected to a local area network or the Internet, and a little configuration can realize long-distance real-time video monitoring. However, in practical applications, once the transmission network cable is abnormal, or data frames are lost during transmission, mosaics or black screens will appear on the monitoring screen, which may cause some key video information to be lost. In add...

AI Technical Summary

Problems solved by technology

[0006] Based on the current status quo, in some fields where high-definition lossless video transmission requires high stability and reliability, the Ethernet interface in the above-mentioned embedded system cannot realize normal data transmission when a single network transmission bus fails.

Images