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Method and device for detecting link failure

A technology of link failure and detection method, applied in the field of communication, can solve the problems of consuming network bandwidth, long time to detect failure, affecting the processing performance of network equipment, etc., so as to speed up the convergence time, speed up the time for failure, and shorten the failure detection. effect of time

Active Publication Date: 2018-02-06
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the principle of BFD fault detection technology is to periodically send BFD packets. If no BFD packets are received for N consecutive times, the corresponding link is considered to be faulty. Therefore, it takes a long time to detect faults.
Furthermore, if the fault detection time needs to be shortened, the interval for sending BFD packets needs to be reduced, which will seriously consume network bandwidth and affect the processing performance of network devices

Method used

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  • Method and device for detecting link failure
  • Method and device for detecting link failure
  • Method and device for detecting link failure

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Embodiment Construction

[0033] Aiming at the problems existing in the prior art, an embodiment of the present invention provides a link fault detection method, which can be applied to a network including multiple network devices. by figure 1 It is a schematic diagram of the application scenario of the embodiment of the present invention, and the network devices included in the network are specifically: network device A, network device B, network device C, network device D, network device E, network device F, and network device G.

[0034] In an embodiment of the present invention, the network manager can configure a fault point monitoring list on each network device, and the fault point monitoring list is used to record the correspondence between the fault point information and the address information of the notified object. Wherein, the fault point information specifically includes: a fault source ID and a fault point ID, where the fault source ID is used to identify a network device where a fault o...

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Abstract

The invention discloses a link fault detection method and equipment. The method comprises: a detection device of a network device detects that an interface voltage has changed from a first value to a second value; the detection device of the network device generates an interrupt signal, And output the interrupt signal to the controller of the network device; after receiving the interrupt signal, the controller of the network device determines the fault point information corresponding to the interface, and determines that the fault point information corresponds to link fails. In the embodiment of the present invention, the time for fault detection can be shortened, the time for the entire network to perceive a fault can be accelerated, and the time for convergence of services on the entire network can be accelerated.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a link fault detection method and equipment. Background technique [0002] Such as figure 1 As shown, when network device D has traffic to send to network device A, network device D will send the traffic to network device A through the main link. When the primary link fails, network device D will send traffic to network device A through the standby link. In order to switch traffic to the standby link in time when the primary link fails, network device D needs to be able to detect whether the primary link fails in time. [0003] In the prior art, a BFD (Bidirectional Forwarding Detection, bidirectional forwarding detection) fault detection technology is used to detect whether a link is faulty, which monitors whether a link is faulty by exchanging BFD packets between two network devices. For example, when the link between network device A and network device B fail...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/703H04L45/28
Inventor 幺双超孟丹罗忠海
Owner NEW H3C TECH CO LTD
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