网络仿真工具NS3的培训文档 .pptx

ns-3 TrainingComputer and Communication Network LabDepartment of Electrical EngineeringNational Sun Yat-Sen University5/13/2013TopicsGetting Started ns-3What is ns-3?InstallationA First ns-3 ScriptTwo tutorial examplesA simple example for this projectComplete the remaining partsGetting Started ns-3What is ns-3?ns-3 is a discrete-event network simulator for Internet systemsns-3 allows researchers to study Internet protocols and large-scale systems in a controlled environmentns-3 is a new simulator (not backwards-compatible with ns-2)ns-3 is a free, open source software project organized around research community development and maintenancethe target user community is networking researchers and educatorsExtensible Software CoreNode BasicsAn ns-3 Node is a husk of a computer to which applications, stacks, and NICs are addedTracing and StatisticsTracing is a structured form of simulation outputExample (from ns-2):Problem: Tracing needs vary widelywould like to change tracing output without editing the corewould like to support multiple outputs9、我们的市场行为主要的导向因素，第一个是市场需求的导向，第二个是技术进步的导向，第三大导向是竞争对手的行为导向。10、市场销售中最重要的字就是“问”。11、现今，每个人都在谈论着创意，坦白讲，我害怕我们会假创意之名犯下一切过失。12、在购买时，你可以用任何语言；但在销售时，你必须使用购买者的语言。13、He who seize the right moment, is the right man.谁把握机遇，谁就心想事成。14、市场营销观念：目标市场，顾客需求，协调市场营销，通过满足消费者需求来创造利润。15、我就像一个厨师，喜欢品尝食物。如果不好吃，我就不要它。16、我总是站在顾客的角度看待即将推出的产品或服务，因为我就是顾客。17、利人为利已的根基，市场营销上老是为自己着想，而不顾及到他人，他人也不会顾及你。ns-3 Has A New Tracing Modelns-3 solution: decouple trace sources from trace sinksBenefit: Customizable trace sinksDownloading ns-3Problems under WindowsCygwin or MinGWIf you do use Cygwin or MinGW and use Logitech productsit can cause Cygwin or MinGW DLLs to die in mysterious wayNote that NSC is not supported on OSX or Cygwin.Network Simulation CradleBuilding ns-3 (1/5)# ./build.pyBuilding ns-3 (2/5)# ./waf -d optimized configurens-3 uses the waf build systemBuilding ns-3 (3/5)# ./waf -d debug configureBuilding ns-3 (4/5)# ./test.py -c coreBuilding ns-3 (5/5)Running a Script