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Network redundancy fault tolerance method and system based on IP protocol expansion

An IP protocol and redundant fault-tolerant technology, applied in the field of network communication, can solve problems such as high application cost, failure to meet real-time requirements, dependence on hardware and network topology, etc., to improve performance, meet high real-time performance and reliability, Network topology has no effect on requirements

Inactive Publication Date: 2015-06-24
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0003] Existing redundant communication design schemes may depend on hardware and network topology, resulting in complex deployment and application environments and high application costs; or when a link failure occurs, the switching time is long and cannot meet real-time requirements

Method used

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  • Network redundancy fault tolerance method and system based on IP protocol expansion
  • Network redundancy fault tolerance method and system based on IP protocol expansion
  • Network redundancy fault tolerance method and system based on IP protocol expansion

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Embodiment Construction

[0080] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0081] Such as figure 1 As shown, a network redundancy fault-tolerant method based on IP protocol expansion includes the following sending steps at the sending end of the data packet:

[0082] Step 1a, receiving the data packet sent by the transport layer;

[0083] Step 2a, judging whether the data packet belongs to redundant communication, if so, execute step 3a, otherwise execute step 4a;

[0084] Step 3a, process the data packet through the network redundancy process of IP protocol extension, and execute step 5a;

[0085] Step 4a, process the data packet through the normal flow of the protocol stack, and execute step 5a;

[0086] Step 5a, sending the data packet via the link layer.

[0087] Such as figure 2...

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Abstract

The invention relates to a network redundancy fault tolerance method and system based on IP protocol expansion. The method includes the steps that a transmitting terminal receives a data packet sent by a transmission layer, whether the data packet belongs to redundancy communication or not is judged, the data packet is processed through the IP protocol expansion network redundancy flow if the data packet belongs to redundancy communication, the data packet is processed through the protocol stack normal flow and sent through a link layer if the data packet does not belong to redundancy communication, a receiving terminal receives the data packet, duplication eliminating is conducted if the data packet belongs to redundancy communication, and the data packet is normally received through a protocol stack if the data packet does not belong to redundancy communication. On the basis of expanding the IP protocol, the method is achieved completely on the basis of software without relying on special devices, no requirements for the network topology exist, the 0 delayed switching characteristic exists when a single link fails, and the requirements for the high real-time performance and reliability of data communication in the fields of intelligent substations and the like can be met.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a network redundancy fault-tolerant method and system based on IP protocol expansion. Background technique [0002] Network communication plays an important role in smart substation automation system. In order to avoid adverse effects of communication failures on system communication security, it is necessary to carry out network redundancy communication design. [0003] Existing redundant communication design schemes depend on hardware and network topology, resulting in complex deployment and application environments and high application costs; or in the event of a link failure, the switching time is long and cannot meet real-time requirements. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a network redundancy fault-tolerant method and system based on IP protocol extension for the deficiencies of the...

Claims

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Application Information

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IPC IPC(8): H04L1/22
CPCH04L1/22
Inventor 辛耀中陶洪铸严亚勤宫敏彭志航王栋
Owner STATE GRID CORP OF CHINA
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