PRP-based cross-three-layer switching parallel redundancy method

Abstract

The invention discloses a PRP-based cross-three-layer switching parallel redundancy method. A PRP node in a network A learns physical MAC addresses of a three-layer switch C1 and a three-layer switch C2 through a first network card A and a second network card B; and the PRP node stores the sending end MAC address and the message serial number in a redundancy control field, the PRP node updates the destination MAC address of the new message to be consistent with the three-layer switch C1 and the three-layer switch C2, the PRP node in the network B discards one new message with the same sending end MAC address and serial number, and the other new message is received and normally processed. According to the PRP-based cross-three-layer switching parallel redundancy method provided by the invention, parallel redundancy across different networks is realized, so that more networking structures and modes are supported, and greater flexibility is provided for practical application.

Description

Technical field [0001] The present invention relates to a method for parallel redundancy across layer based on the exchange of PRP, belonging to the field of computer networking technology. Background technique [0002] Currently, the main power dispatching station automation system other front-end collection double mesh structure, its core uses common multi-platform system hot standby, plus the switch adapter binding mutual support to ensure the reliability of the network. But the system does not always isolated network failure, often with the same mutual backup switch hardware and software configurations, some hardware or software failure family problems may cause each other by the switch group failure, resulting in paralysis of the network system. [0003] International Electrotechnical Commission IEC SC65 Standards Committee Working Group 15 for how to build highly efficient automation network, the network redundancy to make special provisions, the provisions of which IEC6243...

AI Technical Summary

Problems solved by technology

[0007] Purpose: In order to overcome the problem in the prior art that the source MAC address of the PRP message is replaced when passing through the three-layer switch, resulting in the inability to deduplicate and the fact that the MAC addresses of the two three-layer switches in the dual network are different, resulting in the inability of PRP to achieve redundancy Insufficient functions, the present invention provides a PRP-based cross-three-layer switching parallel redundancy method, based on the PRP (Parallel Redundancy Protocol) specified in IEC62439-3, three-layer expansion is carried out, such as scheduling automation master station The core platform of the system as an example constructs an independent dual-network structure, and at the same time provides access methods across network segments

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