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A control plane fault diagnosis system based on differential detection and an implementation method thereof

A fault diagnosis system and control plane technology, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as fault root location and lack of generality, and achieve flexible deployment and fault diagnosis.

Active Publication Date: 2019-06-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the relevant fault diagnosis technology can effectively point out some existing problems, it cannot locate the root cause of the fault, point out the specific link of the fault, and the scenarios used and the problems targeted are also lack of versatility

Method used

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  • A control plane fault diagnosis system based on differential detection and an implementation method thereof
  • A control plane fault diagnosis system based on differential detection and an implementation method thereof
  • A control plane fault diagnosis system based on differential detection and an implementation method thereof

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Embodiment Construction

[0036] In order to realize the fault diagnosis of the SDN network control plane, the present invention needs to obtain accurate visibility when the SDN control plane system is running. For the internal and external events and messages transmitted from the data plane and application plane, the SDN controller will generate a series of For procedure call and processing process, the design of the present invention expresses the processing flow inside the control plane by defining the behavior model of the calling system. When an exception occurs, the relevant system behavior model will reflect the relevant event that triggered the exception and the key call process information, which can be used for fault identification, diagnosis and further root cause location.

[0037] The framework of the present invention is as figure 1 As shown, two environments are involved. On the one hand, deploy the data acquisition module in the control plane in the actual production environment to mon...

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Abstract

The invention discloses a differential detection control plane fault diagnosis system and an implementation method thereof. The system comprises a data acquisition module, an online monitoring module,an offline fault diagnosis module and a network event replay engine. The implementation method comprises steps of acquiring code calling and state change information in the controller through the online monitoring module and the data acquisition module, and constructing a context-aware system behavior model; when the current system is not abnormal, extracting a system behavior model and storing the system behavior model in a reference library as a reference model; when the system finds out abnormity, finding out a system behavior model with a fault and a corresponding reference model according to the symptom of the fault; Difference comparison is carried out on the nodes from top to bottom, and abnormal nodes are found out; And then, carrying out static analysis at the abnormal nodes, finding out the source of the fault at the code level, confirming the source through a network event replay engine in a simulation environment, and submitting the source to an administrator as a fault diagnosis report. The fault source can be positioned, and the applicability is high.

Description

technical field [0001] The invention belongs to the field of computer Internet, and specifically relates to a differential detection-based control plane fault diagnosis system in a software-defined network and an implementation method thereof. Background technique [0002] Software-defined network (SDN) is a new type of network architecture. Compared with the traditional seven-layer network architecture, the core design of SDN is to separate the control plane from the forwarding plane, and divide the network into application layer, control layer and forwarding layer. All configuration and management of the network are handled centrally by the controller, while devices at the forwarding layer are only responsible for efficiently forwarding traffic. The centralized control of the network in SDN greatly simplifies the work of network administrators, and the flexible programmability provides a broad space for upper-layer application development. [0003] The SDN controller is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
Inventor 陈焰于银菠李星卜凯杨剑锋冷雪
Owner ZHEJIANG UNIV
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