广域网带修复的分布式系统级诊断算法

A Distrbuted System- Level Diagnosis Algorithm for nodes of the Network

对计算机的系统级故障进行诊所的研究已发展了几十年,随着计算机网络的发展,将系统级故障诊断的思想用于计算机网络的故障诊断中,相应也取得了许多成果。本文的研究根据现代计算机网络的特点,提出了在三值模型的基础上,对网络进行分布式系统级故障诊断的算法,它主要有以下特点: ①适用于一般拓扑结构,特别是广域网系统,为了保证诊断的正确性,每次只诊断出一个故障结点加以维修,即采用顺序诊断方法。

This paper has pointed out a diagnosis algorithm about how the nodes of the network are diagnosed at system-level. It has been based on distributed diagnosis, solving fault diagnosis problem of arbitrary topological network, and practical application, and it has also broken the topological structure restriction by classic system-level diagnosis making and too intensive theoretic drawback. The algorithm correctly not only diagnoses the fault nodes, but also the fault of HOST and CCP(communication control processor) are able to be distinguished in a node, and the interval fault and state change can also be diagnosed. Besides, self-test and inter-test are combined together so as to increase test's right property.