Method and device for detecting one-way fault

A technology of detection equipment and detection method, which is applied in the field of communication and can solve problems such as failure to detect single-pass faults in ordinary mode

Inactive Publication Date: 2012-02-15
NEW H3C TECH CO LTD
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, normal mode can

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for detecting one-way fault
  • Method and device for detecting one-way fault
  • Method and device for detecting one-way fault

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] Such as Figure 4 As shown, there is a unidirectional fault in the link before the STP network is established. Device A is the root bridge of the network. There is a unidirectional fault between the P1 port of the C device and the P2 port of the A device, but the reverse link is normal and can be normal. Receive the STP protocol packet sent by the root bridge. Since the protocol packet can be received (the protocol packet is sent from the upstream device to the downstream device), the STP status of device A, device B and device C is correct, but the P1 port of device C is A unidirectional fault occurs in the direction of the P2 port of device A (that is, the data packet sent from the P1 port of device C cannot reach device A).

[0047] In view of the above problems, the present invention provides a detection method of a single-pass fault, which is applied in an STP network, and the downstream equipment in the STP network is connected with the Designated port of the upst...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and a device for detecting a one-way fault. The method comprises the following steps: sending a link state query message to a Designated port by a downstream device with the help of a Root port, and confirming the one-way fault in the direction from the Root port to the Designated port by the downstream device when no link response message from an upstream device is received by the downstream device within an appointed time. By adopting the method, the one-way fault can be accurately detected.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a single-pass fault detection method and equipment. Background technique [0002] STP (Spanning Tree Protocol, Spanning Tree Protocol) is used to eliminate physical loops at the data link layer in a local area network. Devices running STP discover loops in the network by exchanging information with each other, and selectively block certain ports, thereby pruning the loop network structure into a loop-free tree network structure, thereby preventing packets from being transmitted in the loop. Proliferation and infinite loops in the road network, such as figure 1 The schematic diagram of the ring network shown in the figure, after the STP port is blocked, the following can be established figure 2 A schematic diagram of a tree-like networking is shown. [0003] It should be noted that since there may be a large number of access devices in the network at the access layer, S...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L12/24H04L12/26H04L12/56
Inventor 蒋茂勇王兆萍
Owner NEW H3C TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap