一种新的网络仿真拓扑生成器  

A New Kind of Topology Generator Used in Network Simulation

作　　者：张春环[1] 雷蕾[1] 纪越峰[1] 

机构地区：[1]北京邮电大学光通信中心,北京100876

出　　处：《系统仿真学报》2006年第11期3115-3117,3121,共4页Journal of System Simulation

基　　金：国家杰出青年科学基金(No.60325104);国家863计划(No.2005AA122210);教育部科学技术研究重大项目(No.0215);教育部高校博士点基金(No.20040013001)资助项目。

摘　　要：由于网络的复杂性,网络仿真对于网络特性的分析、网络技术的开发和分析十分重要。仿真需要在一定的网络拓扑上进行,这就要求拓扑生成器能生成与实际网络尽可能相似的拓扑。拓扑生成器经历了从随机型到层次型再到幂律型的过程。通过对现有各种拓扑生成器的介绍和分析,提出了一种新的综合拓扑生成器。这种综合拓扑生成器将网络以域为单位分成两层,域间体现幂律性,域内体现随机性,从而生成综合性的更接近真实网络的拓扑。Due to the network＇s complexity, the network simulation is essential for the development and analysis of internetworking technology. The simulation needs to be performed in the base of certain network topology, which requires the topology generator to have the ability to generate topology similarly to real network. The network topology generator evolves from the random model to the hierarchical model, and then to the power-law model. Based on the presentation and analysis of existing topology generators, a new synthetic topology generator was proposed. The principle of this generator is to divide the network into two hierarchies, and then generate the inter-domain topology based on the power-law model and the intra-domain one on the Waxman model. It is shown that the topologies generated by the proposed generator are more similar to real network than the existing generators.

关 键 词：拓扑生成器 网络仿真 GT-ITM 幂律 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]