Fast Fault Localization for Large-scale IP-based Communication Systems Using Bayesian Networks  

作　　者：DONG Haijiang DONG Haijiang QIU Xuesong QIU Xuesong CHENG Lu CHENG Lu LI Zhiqing[1] LI Zhiqing[1] QIAO Yan[1] QIAO Yan[1] 

机构地区：[1]State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China [1]State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《Chinese Journal of Electronics》2009年第4期735-740,共6页电子学报（英文版）

摘　　要：In large-scale IP-based communication sys- tems, faults are often caused by multiple factors of uncer- tainty, so bow to locate the root causes of these faults quickly and precisely plays a key role in network man- agement. This paper presents a fault localization tech- nique based on Bayesian probabilistic inference. Equipped with enhanced ability to handle negative and positive symptoms, our method can diagnose multiple simultane- ous faults and be resilient to noise in the symptom infor- mation. Moreover, it achieves good accuracy and precision with low cost of time. In the simulation study, we compare our approach with a prior fault localization technique IHU. Results show that our method offers better accuracy and precision compared to IHU in noisy environment at the ex- pense of less time especially in large-scale communication systems.

关 键 词：Fault localization~ Probabilistic reasoning 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程] TM726[自动化与计算机技术—控制科学与工程]