Communication flow control device used for communication between redundant networks

Abstract

The invention relates to a communication flow control device used for communication between redundant networks. The communication flow control device is characterized by being used for controlling communication flow between the two redundant networks. The communication flow control device comprises first redundant equipment and second redundant equipment; the first redundant equipment extracts and stores first message identification in a message received by a first agent node port; the first redundant equipment extracts second message identification of a first redundant port or a second redundant port and compares the second message identification with the first message identification; if the first message identification corresponding to the second message identification does not exist, the message received by the redundant ports is not sent to the first agent node port. As an agent node swap table is set up, a source address corresponding to a target address is stored and searched for in the agent node swap table, under the condition that the target address corresponds to the source address, the message is sent to the redundant network connected with the agent node port through the agent node port, and communication flow of the redundant network connected with the communication flow control device can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication flow control device for communication between redundant networks. Background technique [0002] With the rapid development of my country's economy and the continuous improvement of industrial manufacturing levels, the machinery and equipment required for industrial production are becoming more and more advanced, and the degree of automation of the production process has been greatly improved, which makes the production process and equipment more complicated. Therefore, the safety of equipment Safety has also become extremely important. The safety control system can effectively avoid man-machine accidents during operation and ensure the safety of personnel and equipment. Safety control systems are widely used in chemical industry, coal, oil and gas and other industrial fields. [0003] At present, redundancy technology, one of the core technologies of industr...

AI Technical Summary

Problems solved by technology

Although the existing method prevents the proxy node from receiving the message sent by itself by searching and processing the ProxyNodeTable table, it still cannot avoid sending the message without the destination address to the redundant network connected to the RedBox. It is easy to cause excessive communication traffic of the redundant network connected to it

Images