Bidirectional fault detection method, system, device and readable storage medium

By identifying and redirecting BFD control messages to the hardware engine in the switching chip, the BFD detection task is offloaded, solving the problem that the accuracy of BFD detection in the soft forwarding system is affected by CPU load, and achieving efficient fault detection and network convergence.

CN122420167APending Publication Date: 2026-07-17SUZHOU CENTEC COMM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU CENTEC COMM CO LTD
Filing Date
2026-06-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In soft forwarding systems, BFD detection accuracy is affected by CPU load, leading to delayed response, misjudgment of link faults, and increased detection convergence time, especially in high-performance networking scenarios where CPU resource consumption is significant.

Method used

By deploying access control list rules in the switching chip, BFD control messages are identified and redirected to the hardware operation management and maintenance engine, offloading the BFD session state machine, timers, and connectivity detection tasks to hardware execution, thus reducing the CPU load.

Benefits of technology

It improves the real-time performance and accuracy of BFD detection, ensures the reliability of link fault detection and network convergence speed, and avoids excessive CPU resource consumption and timing jitter caused by software scheduling.

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Abstract

The application provides a bidirectional fault detection method, system, device and readable storage medium, the method comprises the following steps: determining whether the received message is a BFD control message based on the access control list rule issued by the central processor; if the received message is a BFD control message, the BFD control message is sent to the hardware operation management maintenance engine, and the BFD session information corresponding to the BFD control message is acquired based on the hardware operation management maintenance engine to detect the connectivity of the BFD control message; if the received message is not a BFD control message, the received message is sent to the central processor. Compared with the prior art, the application avoids excessive consumption of CPU resources caused by the increase in the number of BFD sessions or the shortening of the detection period. On the other hand, the hardware processing of the BFD service eliminates the uncertainty factors on the software processing path, can realize better timing accuracy, and improves the reliability of detection and the network convergence speed.
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