基于ESB的信息交换系统可靠性仿真与分析

Reliability Simulation and Analysis of Information Exchange System Based on ESB

基于ESB的信息交换系统可靠性和生存能力分析,对提高整个系统的安全运行水平具有重要作用。可靠性是系统生存能力评估的重要指标,其建模分析一直是系统生存能力评估的难点。为了有效分析基于ESB信息交换系统的可靠性,把信息交换系统建模为串联可修复系统,提出一种概率分析方法对该模型的可靠度和瞬时可用度进行定量分析及比较。仿真结果表明,在给定部件的故障率和修复率等先验概率时,ESB信息交换系统遭受病毒攻击所产生的故障是系统可靠度及瞬时可用度下降的主要原因,修复率对瞬时可用度的提高具有重要作用,运营单位应设法提高系统修复率和抗攻击的能力。

The evaluation of reliability and survivability of information exchange systems based on ESB plays an important role in improving the level of security operation of the system. The reliability of system is one of the key indicators for systems＇ survivability evaluation, and modeling analysis is always a nodus for the system＇s survivability evaluation. In order to analyze the reliability of ESB effectively, this paper firstly formulated an ESB network system as a series repairable system. Then we quantitatively investigated and compared the reliability and instantaneous availability of the model using probabilistic method. The simulation results show that under the prior probabilities of component failure and repairability, the decreases of system＇s reliability and instantaneous availability are m＇ainly caused by the attacks from viruses, and the repairable rates play a critical role in enhancing instantaneous availability. Furthermore, the operators should manage to improve the system＇s repair rate and Anti -strike capabilities.