An ethernet redundancy device of vxworks operating system based on network heartbeat

Abstract

The invention relates to an Ethernet redundancy device based on a network heartbeat VxWorks operating system, belonging to the field of embedded software development. The heartbeat message sending module of the present invention periodically sends heartbeat messages to the broadcast domain where the device is located through two links; the network message capture module classifies and stores the received heartbeat messages, and records the time when each message is received , for the link determination switching module to call and query; the link connection status query module reads the register of the phy chip, and periodically queries the physical connection status of the two links for the link determination switching module to call and query; the link determination switching module starts from The network packet capture module and the link connection status query module query information, and switch between the active and standby links according to the heartbeat message and the link connection status. The invention solves the problem of not switching when the physical link receives packets normally and abnormally, realizes more accurate link failure judgment under single broadcast domain, and then achieves more reliable Ethernet redundancy.

Description

technical field [0001] The invention belongs to the field of embedded software development, and in particular relates to an Ethernet redundancy device based on a network heartbeat-based VxWorks operating system. Background technique [0002] In the field of embedded development, there are more and more applications of Ethernet. Although Ethernet has the advantage of large transmission bandwidth, because it does not have error handling capability, additional design is required to ensure it in application scenarios that require transmission reliability. [0003] The most common reliability design method of Ethernet is the link redundancy design, in which the main and standby network switching method—switching to the standby link when the main link fails is a commonly used link switching method. The main method for judging link faults currently used is to judge whether the link is normal by reading the physical link status of the Ethernet. However, in this method, when the ph...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is how to provide a kind of Ethernet redundancy device based on the VxWorks operating system of network heartbeat, to solve the problem of judging the false normal of the link in the embedded system

Images