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Method and system for locating network fault

A technology for locating network and network faults, which is applied in the field of communication, and can solve problems such as detecting network connectivity and correct positioning, and being unable to apply traceroute programs

Inactive Publication Date: 2009-07-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a method and system for locating network faults, which can solve the problem that the traceroute program cannot be used to detect network connectivity and correctly locate network faults due to the configuration of certain ports and protocol filtering in the network intermediate equipment

Method used

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  • Method and system for locating network fault
  • Method and system for locating network fault

Examples

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Embodiment 1

[0026] Embodiment one provided by the invention: refer to figure 1 , which is a schematic diagram of using the traceroute program to traverse the firewall to detect network connectivity.

[0027] In the prior art, the network connectivity can be detected through the existing traceroute program, and the network topology can be understood. However, when there is a firewall in the network, the firewall may prohibit the protocol type and port number used by the existing traceroute program, such as ICMP, UDP port with a port number greater than 30000, etc. At this time, the corresponding traceroute program cannot be used. detected. figure 1 A schematic diagram for the application in a small network. The network between the terminal PC 10 (source host) and the application server 14 (destination host) spans two routers (router 11 and router 13) and a firewall device 12, and the firewall device 12 prohibits the ICMP protocol and the port number is greater than 30000 UDP packets, wh...

Embodiment 2

[0039] Embodiment two provided by the present invention: see figure 2 , which is an implementation schematic diagram of using the traceroute program to detect faulty nodes in the application layer.

[0040] The network connectivity can be detected through the traceroute program in the prior art, and the fault nodes of the network can be located. However, when there is a firewall in the network, the firewall may prohibit some application port numbers and protocol types. At this time, the traceroute program in the prior art detects that the network is connected, but the user service obtains a specific service, that is to say, the application layer of the network may not be connected.

[0041] figure 2 For another embodiment that the present invention is applied to a small network, the network between the terminal PC 10 and the application server 14 has straddled two routers (router 11 and router 13) and a firewall 12, and the firewall 12 has prohibited the UDP port number of...

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Abstract

The invention relates to the field of communication and provides a method for locating a network fault. The method comprises the following steps: dynamically adjusting the protocol type and the port number of a detection message when applying traceroute program and sending an adjusted detection message for detection; and determining the position of a network fault according to the communication status in a network, which is detected by applying the traceroute program. The invention further provides a system for locating a network fault, which comprises an information acquisition unit, a detection message sending unit and a network fault positioning unit. The invention provides a method for detecting and locating a network fault in a specified network, which solves the problem that the prior traceroute program can not detect a specified network and an application layer of the network and locate the position of a fault by using fixed port number and protocol type.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for locating network faults by using a traceroute program. Background technique [0002] With the rapid development of the Internet, the scale of the network is getting larger and larger. For a network administrator, maintaining such a large network will face many challenges. One of the challenges is that when the network fails and the business is interrupted. The first thing the network administrator needs to do is to quickly find the fault point. Only after the fault point is found can the cause of the fault be analyzed and located, and then the network can be restored quickly. [0003] Network interruption can be summarized into three levels: one is link interruption, which mainly refers to the interruption of the physical connection in the network, for example, a certain optical fiber in the network is broken, a certain device is dead, etc.; the other is networ...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L29/06
Inventor 李教峰顾勤丰
Owner HUAWEI TECH CO LTD
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