Fault Diagnosis Mechanism of Virtual Network Service Based on Network Characteristics

Efficient fault management method in network virtualization environment has become an important research content. In order to solve the problem of low fault management efficiency caused by large number of power terminals and high network noise, this paper designs a virtual network service fault management model based on network characteristics. The model is constructed based on network features such as network mapping relationship, corresponding relationship between faults and symptoms. The model includes five modules: underlying network, virtual network, network alarm collection center, network mapping management center, and network fault diagnosis center. Based on this model, this paper proposes a virtual network service fault diagnosis mechanism. The mechanism includes six steps: alarm information collection, alarm preprocessing, network mapping, binary Bayesian model, fault diagnosis model optimization, and fault location. Through performance analysis, it is verified that the fault management model and diagnosis mechanism proposed in this paper have good performance and application value.