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Method and system for discarding repeated frames of high-availability seamless redundant ring network

A high-availability, redundant ring network technology, applied in the transmission system, digital transmission system, data exchange network, etc., can solve the problems of inaccurate judgment of repeated frames and low efficiency of repeated frame judgment

Active Publication Date: 2020-06-12
GRIDNT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present application provides a method and system for discarding repeated frames in a high-availability seamless redundant ring network to solve the problems in the prior art that the judgment of repeated frames is not accurate enough and the efficiency of judging repeated frames is low

Method used

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  • Method and system for discarding repeated frames of high-availability seamless redundant ring network
  • Method and system for discarding repeated frames of high-availability seamless redundant ring network
  • Method and system for discarding repeated frames of high-availability seamless redundant ring network

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Embodiment 1

[0062] see figure 1 , figure 1 It is a schematic flowchart of a method for discarding repeated frames in a high-availability seamless redundant ring network provided by an embodiment of the present application. Depend on figure 1 It can be seen that, in this embodiment, the method for discarding repeated frames in a high-availability seamless redundant ring network includes the following process:

[0063] S1: Obtain two channels of Ethernet data.

[0064] The Ethernet data in this embodiment are respectively sent to Ethernet Mac0 and Ethernet Mac1 through two network cards.

[0065] For the network topology diagram of the repeated frame discarding judgment in this embodiment, please refer to figure 2 , figure 2 The A-frame and B-frame are the same two data frames. When the link in one direction is abnormal, the data can still be transmitted to the destination node through the link in the other direction, which improves the redundancy. In order to prevent the destinatio...

Embodiment 2

[0089] exist Figure 1-Figure 4 On the basis of the illustrated embodiment see Figure 5 , Figure 5 It is a schematic structural diagram of a system for discarding repeated frames in a high-availability seamless redundant ring network provided by an embodiment of the present application. Depend on Figure 5 It can be seen that the high-availability seamless redundant ring network repeated frame discarding system in this embodiment mainly includes: two network ports, two first data cache modules, multiplexing module, repeated frame discarding module and second data cache module . Any network port matches a first data cache module, and the second cache module is connected to the CPU via a PCIe interface.

[0090] The system is set on an FPGA chip, and two network ports are used to obtain two channels of Ethernet data. The two first data cache modules are used to respectively cache the two channels of Ethernet data and transmit them to the multiplexing module. The multiple...

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Abstract

The invention discloses a method and a system for discarding repeated frames of a high-availability seamless redundant ring network. The method comprises the following steps: acquiring two paths of Ethernet data; caching the two paths of Ethernet data respectively; sorting the cached Ethernet data according to the FIFO principle; analyzing the sorted data, and performing repeated frame discardingjudgment on the adjacent data according to an analysis result; caching the data after the repeated frame discard judgment, and transmitting the data after the repeated frame discard judgment to the CPU through the PCIe interface. The system comprises two network ports, two first data caching modules, a multiplexing module, a repeated frame discarding module and a second data caching module. According to the invention, the accuracy and efficiency of repeated frame judgment can be effectively improved.

Description

technical field [0001] The present application relates to the technical field of intelligent substation communication, in particular to a method and system for discarding repeated frames of a high-availability seamless redundant ring network. Background technique [0002] With the development of smart substations, the complexity of the internal communication network of smart substations is getting higher and higher. Correspondingly, higher requirements are put forward for the reliability of the internal communication network of smart substations. HSR (High-availabilitySeamless Redundancy Ring, high-availability seamless redundant ring network) has the advantages of zero delay in network failure recovery, no frame loss during failure, high network reliability and low system cost. It is used in the field of smart substation and smart grid automation. Gaining importance. [0003] Usually, the redundant device is connected to the HSR ring network through two Ethernet ports, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437H04L12/823H04L12/863H04L29/12H04L47/32
CPCH04L12/437H04L47/32H04L47/622H04L2101/622
Inventor 王彬李惠民王乐挺王化宗陈超吴莉钱春龑
Owner GRIDNT