Ethernet redundancy device of VxWorks operating system based on network heartbeat

A technology of vxworks and operating system, the redundancy applied in the operation is used for data error detection, transmission system, digital transmission system and other directions, which can solve the problems of false normal links of embedded systems, and achieve reliable Ethernet redundancy, The effect of accurate link fault judgment

Active Publication Date: 2021-01-22
TIANJIN JINHANG COMP TECH RES INST
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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

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  • Ethernet redundancy device of VxWorks operating system based on network heartbeat

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Embodiment Construction

[0031] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] The present invention designs a software device running on the common embedded operating system VxWorks, which is combined with the traditional fault judgment method based on link connection state to realize more reliable Ethernet redundancy based on network heartbeat under a single broadcast domain. Remain. The Ethernet redundancy device includes a heartbeat message sending module, a network message grabbing module, a link connection status query module and a link decision switching module;

[0033] The heartbeat message sending module periodically sends heartbeat messages to the broadcast domain where the device is located through two links;

[0034] The network message grabbing module will receive the heartbe...

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Abstract

The invention relates to an Ethernet redundancy device of a VxWorks operating system based on network heartbeat, and belongs to the field of embedded software development. A heartbeat message sendingmodule periodically sends heartbeat messages to a broadcast domain where equipment is located through two links; the network message capture module classifies and stores the received heartbeat messages and records the receiving time of each message for the link judgment switching module to call and inquire; the link connection state query module reads a register of the phy chip and periodically queries physical connection states of the two links for the link judgment switching module to call and query; and the link judgment switching module queries information from the network message capturemodule and the link connection state query module, and switches the main link and the standby link according to the heartbeat message and the link connection state. According to the invention, the problem that a physical link is not switched when normal packet receiving is abnormal is solved, more accurate link fault judgment in a single broadcast domain is realized, and more reliable Ethernet redundancy is further achieved.

Description

technical field [0001] The invention belongs to the field of embedded software development, in particular to an Ethernet redundancy device based on a network heartbeat-based VxWorks operating system. Background technique [0002] In the field of embedded development, the application of Ethernet is more and more. Although Ethernet has the advantage of large transmission bandwidth, because it does not have error handling capability, it needs additional design to ensure transmission reliability in application scenarios. [0003] The most common reliability design method for Ethernet is link redundancy design, in which the main and backup network switchover method - switching to the backup link when the main link fails is a commonly used link switching method. At present, the link failure determination method mainly used is to determine whether the link is normal by reading the physical link status of the Ethernet. However, in this method, when a phy chip or a transformer fail...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/24G06F11/14G06F11/10
CPCH04L43/10H04L41/0663G06F11/1004G06F11/1479
Inventor 赵继伟李家彦牛俊慧史话
Owner TIANJIN JINHANG COMP TECH RES INST
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