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Method for detecting and automatically recovering Ethernet loopback

An automatic recovery, Ethernet technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of increasing the workload of management and maintenance, achieve low hardware configuration requirements, and achieve simple effects

Inactive Publication Date: 2011-09-14
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will increase the workload of management and maintenance in practical applications
On the other hand, if a malicious user forges a corresponding loop detection message, the existing methods for detecting Ethernet loops mentioned above cannot avoid this

Method used

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  • Method for detecting and automatically recovering Ethernet loopback
  • Method for detecting and automatically recovering Ethernet loopback
  • Method for detecting and automatically recovering Ethernet loopback

Examples

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034]The present invention relates to the realization of Ethernet loop detection and automatic recovery. Since the self-defined loop detection message needs to be redirected to the CPU for processing, and the CPU also needs to control the forwarding and filtering of the message by the Ethernet switching chip, therefore It is required that the Ethernet switching chip can support message redirection and filtering functions, which can be met by general Ethernet switching chips, so there is no change in realizing this function compared with the existing ONU hardware.

[0035] figure 2 The loop detection software module structural diagram of the present invention is given, including five modules: a loop detection initialization module, a loop detection message sending module, a loop detection message receiving module, a loop detection timer module, a loop detect...

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Abstract

The invention discloses a method for detecting and automatically recovering an Ethernet loopback, and relates to detection and recovery of the Ethernet loopback. The method comprises the following steps: 1, completing initiation with a loopback detection initialization module; 2, constructing, transceiving and analyzing a loopback detection message to judge whether a loopback exists; 3, assigninga value to a flag, and redirecting the message to a CPU and sending a warning message if the loopback exists; 4, monitoring loopback failure recovery conditions and treating; and 5, repeating steps 2to 4. The method for detecting and automatically recovering the Ethernet loopback can detect failures of loopbacks with one port or two ports, also can detect the loopback and judge that whether corresponding loopbacks are eliminated so as to recover the loopback, provides a solution for feint of loopback blockage caused by a loopback detection message counterfeited by a user, and has the characteristics of low requirement on hardware configuration of Ethernet switch chips and simple implementation.

Description

technical field [0001] The invention relates to the detection and restoration of the Ethernet loop, in particular to a method for detecting the Ethernet loop and automatically restoring it. Background technique [0002] Ethernet-based passive optical network EPON (Ethernet Passive Optical System) is a single-fiber bidirectional optical access network with a point-to-multipoint structure. It is composed of an optical network unit ONU (Optical Network Unit) and an optical distribution network ODN (Optical Distribution Network) connecting the two. According to the current application scenarios of EPON equipment, ONU can be divided into various types, and the MDU (Multi-Dwelling Unit) providing Ethernet interface is one of them. In order to simplify the description, the optical network unit ONU described below refers to the MDU type ONU that provides an Ethernet interface, unless it is clearly defined or described. figure 1 A schematic diagram of the hardware structure of a ty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/56H04L45/28
Inventor 曾颜杨晓
Owner FENGHUO COMM SCI & TECH CO LTD
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