Network virtualization environment fault diagnosis method based on relevance of symptoms and faults

Abstract

The invention provides a network virtualization environment fault diagnosis method based on the relevance of symptoms and faults. According to the network virtualization environment fault diagnosis method, in two symptom-fault relations including the relation of the virtual network observation symptom-a virtual fault node and relation of an RVF-a physical fault node, the same diagnosis method is adopted twice; firstly, a suspicious virtual fault node set is selected and obtained from an observation symptom set in the virtual network based on the Bayes' theorem; secondly, an intersection set of the observation symptom set and a suspicious symptom set is obtained and used as an actual symptom set, wherein the suspicious symptom set is composed of all relevant symptoms of the suspicious virtual fault node set; a virtual fault node set is generated according to the actual symptom set and is used as a virtual diagnosis result, wherein the virtual diagnosis result can explain the generation of all the symptoms of the actual symptom set; NRVFs of virtual faults are excluded based on the same method, so that physical faults are obtained. By the adoption of the network virtualization environment fault diagnosis method based on the relevance of the symptoms and the faults, more accurate diagnosis of a network virtual environment can be achieved.

Description

technical field [0001] The invention relates to a computer network, in particular to a network virtualization environment fault diagnosis method based on the correlation between symptoms and faults. Background technique [0002] A network virtualization environment is a collection of multiple virtual and physical networks. Among them, multiple virtual networks (upper layer) coexist on the same physical network (lower layer), and use the resources of the physical network to provide end users with personalized services, thereby effectively promoting the deployment and application of network innovation. [0003] In a network virtualization environment, traditional ISP facilities and services are separated. The infrastructure provider InP (Infrastructure Provider) is responsible for managing and operating the underlying physical network facilities; the service provider SP (Service Provider) is responsible for leasing network resources from InP to assemble a virtual network to p...

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Problems solved by technology

However, this method directly ignores the existence of NRVF, which will reduce the accuracy of diagnosis

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