Ethernet automatic protection link failure quick switching method

An automatic protection and link failure technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of unsatisfactory carrier-grade equipment, etc., and achieve the effect of realizing fast convergence, reducing lost reports, and satisfying fast convergence

Inactive Publication Date: 2010-10-20
北京神州数码云科信息技术有限公司 +1
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AI Technical Summary

Problems solved by technology

Although the method described above can meet the requirements of link switching, the switching time is about several hundred milliseconds, which provides a guarantee for reliable communication between switches, but for carrier-grade equipment, the switching time is required to be no higher than 50ms, so This method is far from meeting the requirements of carrier-grade equipment

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  • Ethernet automatic protection link failure quick switching method
  • Ethernet automatic protection link failure quick switching method
  • Ethernet automatic protection link failure quick switching method

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Embodiment Construction

[0024] Such as figure 2 As shown in , it shows the situation that two distributed switches are connected through two physical links to form a loop: figure 2 Among them, S1 is called the master node device, S2 is called the slave node device, and the corresponding ports are called the master node port and the slave node port. Among them, the two ports of S1 are distributed on different service boards; the two ports of S2 are also distributed on different service boards. These two physical links form a loop protection system and back up each other. In the figure, port A1 of S1 becomes the primary port, port A2 becomes the secondary port, port B1 of S2 becomes the primary port of the slave node, and port B2 becomes the secondary port.

[0025] When the main port link is down due to link failure or artificial plugging and other reasons, the processing flow is as follows: image 3 As shown; when the main port of the link failure is DOWN, the driving loop protection module 101 o...

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Abstract

The invention discloses an Ethernet automatic protection link failure quick switching method. By generating quick interruption and adopting a mode of directly communicating between CPUs, a switch chip is arranged at a secondary port, and the blockage state of the secondary port is eliminated; and each singlechip informs a corresponding protocol module for processing. Before the switch chip is arranged on a board where the secondary port is positioned, three times for processing protocol stack modules are saved, and the process of inter-board communication once is saved simultaneously. A main chain can be quickly switched to a backup chain, the packet loss of the chain is reduced, the rapid convergence of the chain is realized, the convergence time can be shortened to less than 10ms, the requirement on the rapid convergence of carrier-grade equipment is met, and more reliable guarantee can be provided for carrier-grade service.

Description

technical field [0001] The invention relates to a method for protecting an Ethernet multi-loop, in particular to a method for quickly switching over an Ethernet automatic protection link failure, which can quickly switch to a backup link when the link where the main communication link port is located fails, Provide more reliable protection for carrier-class services. Background technique [0002] MRPP (Multi-layer ring protection protocol, multi-ring automatic protection protocol) is a link layer protocol used for Ethernet ring protection. The ring protection system formed by it can prevent data loops from causing broadcast storm, and when a link on the Ethernet ring is disconnected, it can quickly restore the communication path between the nodes on the ring network. [0003] Since one function of the loop protection system is to ensure the traffic reliability of the switch port and the server interface; under normal circumstances, the primary link is used for communication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/56H04L12/437
Inventor 陈振光
Owner 北京神州数码云科信息技术有限公司
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