Path detection method and apparatus

A path detection and main path technology, applied in the field of communication, can solve problems such as packet loss and inability to achieve fast switching, and achieve the effect of fast detection and simple and flexible detection methods.

Active Publication Date: 2018-01-05
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present disclosure proposes a path detection method and device, which are used to solve the problem that fast switching cannot be achieved when a non-directly connected path fails, resulting in a large amount of packet loss

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  • Path detection method and apparatus
  • Path detection method and apparatus

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Embodiment Construction

[0019] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0020] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0021] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The invention relates to a path detection method and apparatus. The method comprises the following steps: when a first network device learns FRR (Fast Reroute) reaching a second network device, sending a first BFD message to the second network device so as to establish a first BFD session between the first network device and the second network device, wherein the first BFD message comprises identification information, and the identification information is used for triggering the second network device to send a second BFD message so as to establish a second BFD session between the second network device and the first network device; and detecting a main path between the first network device and the second network device by the first network device based on the first BFD session and the second BFD session. According to the path detection method and apparatus disclosed by various aspects of the invention, the following problem is solved: when a non direct connection path is faulty, fast switch cannot be achieved, resulting in a large amount of packet loss. Moreover, the fault of the non direct connection path is detected quickly without changing the networking configuration, the non direct connection path is switched to a standby path, and the detection manner is simple and flexible.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular, to a path detection method and device. Background technique [0002] When a link or node in the network fails, the packets passing through these failed nodes to the destination address may be discarded or form a loop, so that transient traffic interruption or traffic loop will inevitably occur in the network until the network reconverges Calculate new topology and routes. [0003] With the expansion of network scale and the emergence of new applications, some applications are very sensitive to traffic interruption, such as real-time services such as IP telephony, streaming media, online games, and remote video conferencing. In this way, when a node fails or a link fails, it is particularly important to quickly recover traffic. In order to reduce the traffic interruption time in the network, it is necessary to be able to quickly discover link failures, and qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/707H04L12/703H04L12/751H04L12/26H04L45/02H04L45/24H04L45/28
Inventor 汪江波
Owner NEW H3C TECH CO LTD
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