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A network fault detection method and device

A network fault and detection method technology, applied in the field of communication, can solve the problems of low efficiency and low accuracy of network fault detection, and achieve the effect of high accuracy

Active Publication Date: 2022-05-20
RUIJIE NETWORKS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a network fault detection method and device to solve the problems of low accuracy and low efficiency of network fault detection in the prior art

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  • A network fault detection method and device
  • A network fault detection method and device
  • A network fault detection method and device

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Embodiment Construction

[0036] For the inside of the data center network, the server can only try to restore the connection by retransmitting the TCP message, and cannot locate the fault location. Therefore, a network fault detection method is urgently needed, which can detect and locate the fault of the TCP flow in time.

[0037] Aiming at the problems of low accuracy and low efficiency of network fault detection in the prior art, an embodiment of the present invention provides a network fault detection method, which is applied to a programmable switching chip of a switching device. The flow process of the inventive method is as figure 1 As shown, the execution steps are as follows:

[0038] Step 101, the programmable switching chip performs data flow detection on the received transmission control protocol TCP message, and obtains the quintuple information and the TCP sequence number of the TCP message;

[0039] Here, the programmable switch chip may specifically be a switch chip used for data plan...

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Abstract

The invention discloses a network fault detection method, which is applied to a programmable switching chip of switching equipment. The method includes: the programmable switching chip detects the data flow of the received transmission control protocol TCP message, and obtains the The five-tuple information of the TCP message and the TCP sequence number; when the five-tuple information of the TCP message is recorded, it is judged whether the TCP sequence number is greater than the record sequence number corresponding to the five-tuple information; if The TCP sequence number is not greater than the record sequence number, then add one to the number of retransmissions corresponding to the quintuple information, and update the record sequence number to the TCP sequence number; determine the number of retransmissions Whether it is greater than the preset retransmission times threshold; if the retransmission times is greater than the preset retransmission times threshold, then determine the TCP message as a fault message and send it to the fault handling device for fault processing. The embodiments of the present invention can improve the accuracy of network fault detection.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a network fault detection method and device. Background technique [0002] Network failure has always been a problem to be solved in the data center network. As the network environment becomes more complex, it becomes more difficult to find out where the failure occurred in a timely and accurate manner. The TCP protocol handles a small amount of packet loss through packet retransmission, but if the network fails, a large number of retransmitted packets will occur. Therefore, a small number of TCP retransmissions does not necessarily mean that the network is faulty, and network faults will inevitably lead to a large number of packet retransmissions. Therefore, the number of retransmissions within a certain period of time can be used to roughly determine whether the network is faulty. [0003] Existing detection of network faults is mainly performed outside the network. When...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L41/0631H04L41/0677H04L49/55H04L69/163H04L69/22
CPCH04L41/0631H04L41/0677H04L49/555H04L49/557H04L69/163H04L69/22Y02D30/50
Inventor 郑文楷
Owner RUIJIE NETWORKS CO LTD
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