多自治系统关联的级联失效模型建立和分析  

Modeling and Analysis on Multi-AS Associated Cascading Failure

作　　者：马龙邦[1] 郭平[2] 赵娟[2] 张正豪[1] 

机构地区：[1]后勤工程学院后勤信息工程系,重庆401311 [2]后勤工程学院训练部,重庆401311

出　　处：《后勤工程学院学报》2013年第1期79-84,共6页Journal of Logistical Engineering University

摘　　要：为分析级联失效对互联网性能的影响,基于互联网由多自治系统关联的现实,模拟自治系统间的负载均衡,建立了多自治系统关联的级联失效模型。在此基础上定义了分别由强连接关系和弱连接关系组成的2种多自治系统关联网络,并分析了域间流量引起的级联失效对网络性能造成的影响。结果表明:存在引发级联失效的域间流量比例临界值;级联失效发生后,弱连接网络以吞吐量下降为主,强连接网络以负载增加为主。In order to analyze the impact of the cascading failure on Internet performance, and on the basis of the reality that Internet is generated by the association of multi-autonomous system （AS）, this paper imitates the load balance among AS to estab- lish a multi-AS associated cascading failure model, on which two types of multi-AS associated networks, respectively produced by strong connections and weak connections among AS, are defined. Then it analyzes the inter-domain traffic caused cascading failure impact on network performance. The results show that there exists a threshold of inter-domain traffic proportion causing cascading failure; cascading failure makes the weak connected network to mainly decrease throughput and the strong one to mainly increase load. The above conclusion provides a new theoretical basis for network management, so managers can use targeted measures ac- cording to the different performance requirements.

关 键 词：级联失效 自治系统 域间流量 网络性能 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] N945[自动化与计算机技术—计算机科学与技术]