基于 NS3 的 BCube 数据中心网络仿真

为了解决复杂数据中心网络仿真难题，在对 NS3 仿真工具的研究基础上，对 NS3 的路由协议进行扩充，研究使用 NS-3 网络仿真软件自动生成 BCube 网络拓扑，实现 BSR 路由协议，通过 NetAnim 可视化模块直观展示网络仿真结果，并通过 Tracing 系统收集、统计与分析网络丢包情况、端到端时延以及吞吐量等性能指标。与传统 RIP 协议、OSPF 协议进行对比，证明了 BSR 路由的优越性。该研究可为数据中心网络提供有效的参考信息，有利于简化数据中心网络仿真工作，使数据中心网络能更快地投入使用。

BCube-based Data Center Network Simulation Using NS3

In order to solve the simulation problem of complex data center network，an extension routing protocol module of network simulator version 3（NS3）is proposed based on analysis of Bcube structure. How to use NS3 to automatically generate network topology and realize BSR routing protocol through the experiments with BCube is introduced. The network simulation results are displayed intuitively through NetAnim visualization module. The metrics such as packet loss，end-to-end delay and throughput are collected，counted and analyzed by Tracing system. Compared with traditional RIP protocol and OSPF protocol，the advantages of BSR routing are demonstrated. This research can provide effective reference information for data center network and simplify the work flow and make data center network put into use faster.