Double-machine redundant system and method based on network address drifting technology

Abstract

The invention belongs to the field of industrial control, and particularly relates to a double-machine redundant system and method based on a network address drifting technology. The system comprisesa server A and a server B, and the server A and the server B are interconnected through a switch; each server is internally provided with a main and standby control communication module, a network card monitoring module, a state publishing module and a manual machine switching module, and the main and standby control communication modules between the two servers are interconnected. In the main andstandby double-machine decision making process, the priority is set for state information provided by the state publishing modules, the result indicating which one is a main machine and which one isa standby machine is clear, even if the states of the two machines are the same, the main and standby states can be quickly decided, and the situation that multiple main machines exist is avoided. Thework main machines of the servers are bound through a drifting IP, the continuity of service is ensured, and the uninterrupted work of the system is truly realized. The manual soft switching functionis provided by arranging the manual machine switching module so that the maintenance of the designated machine can be realized by manual machine switching, and the maintainability of the system can be improved.

Description

technical field [0001] The invention belongs to the field of industrial control, and in particular relates to a dual-machine redundant system and method based on network address drift technology. Background technique [0002] In industrial production, the requirements for the availability, reliability and business continuity of industrial control systems are getting higher and higher. In order to improve the performance of industrial computer control system, redundant control has emerged as an effective solution to ensure system business continuity and improve system reliability and availability. [0003] With the development of computer technology, dual-machine redundancy technology is more and more widely used in the field of industrial control. This technology is a combination of software and hardware with high fault tolerance. This technology uses one machine as the main machine and another machine as the backup machine in the control system. When the main machine fai...

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is: in the current dual-machine redundancy technical scheme, there are problems such as unsatisfactory system business continuity, cumbersome dual-machine decision-making, unfair dual-machine arbitration, poor maintainability, etc.

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