NS2 Training 4122011 Introduction NS2 Network Simulator Generation

NS-2 Training 4/12/2011

Introduction NS-2: Network Simulator Generation 2 Stable Release: 2. 34 / June 17, 2009 Other Simulators OPNET Qual. Net ns-3

Installation (1/2) Cygwin Linux-like environment for Windows Download http: //140. 116. 72. 80/~smallko/ns 2/cygwin. rar http: //www. cygwin. com/ NS-2 The latest version: ns-2. 34 ns-allinone-2. 28/2. 29 Download http: //sourceforge. net/projects/nsnam/files/ http: //140. 116. 72. 80/~smallko/ns 2/ns-allinone-2. 28. rar

Installation (2/2) Nam: Network Animator (nam-1. 14 released Jun 17 2009) animation tool for viewing network simulation traces and real world packet traces http: //www. isi. edu/nsnam/index. html

TCL Codes TCL (Tool Command Language) • Initialize the packet format • Create a scheduler • Select the default address format • /ns-2. xx/tcl/lib/ns-lib. tcl pronounced as "tickle" Basic terms Create a new simulator Definitions for nam Open a trace file Network behaviors set ns [new Simulator] set nf [open out. nam w] $ns namtrace-all $nf set nd [open out. tr w] $ns trace-all $nd Nodes, links, queue size, node position, traffic types, simulation times, etc.

Output data NAM Trace • appeared as "------" since no flag is set • Explicit Congestion Notification

Analysis AWK Alfred Aho, Peter Weinberger, and Brian Kernighan programming language that is designed for processing text-based data pronounced as the same as the name of the bird, “auk”

Run AWK file Commands awk -f file 1. awk file 2. tr > out. txt file 1. awk file 2. tr a command file a primary input file out. txt an output file

AWK Form /pattern/ { action } Pattern is typically an expression Action is a series of commands In NS-2 Simulator BEGIN { action } END { action }

AWK You can measure Delay, Jitter, Packet loss, and Throughput Example

Rests of this project Wi. MAX module http: //140. 116. 72. 80/~smallko/ns 2/ns-allinone 2. 29_wimax. rar 長庚大學 Install cygwin first and then download this file. Decompress it. After that, run “. /configure; make clean; make depend; make” ns-allinone-2. 29_wimaxns-2. 29mac802_16traffic

Rests of this project MPEG modify the file packet. h in the common folder (Line 463) modify the file agent. h in the common folder (Line 71) modify the file agent. cc in the common folder (Line 70) create a folder under ns-2. 27 and put added files in it modify the file tcl/lib/ns-default. tcl (Line 801) modify the Makefile (Line 154) recomplie NS 2 RTP add a folder into the ns directory modify ns-default. tcl modify the Makefile recomplie NS 2

Rests of this project Correctly Decodable Frames in a GOP A. Ziviani, B. E. Wolnger, J. F. Rezende, O. C. M. B. Duarte, and S. Fdida, “Joint Adoption of Qo. S Schemes for MPEG Streams, ” Multimedia Tools and Applications, vol. 26 no. 1, pp. 59 -80, May 2005. 計算機網路實驗—使用NS 2模擬多媒體通訊與無線網路， 柯志亨團隊

Resources Gunplot Plot the analyzed results of awk Web site NS 2 使用說明手冊 NS-2 Trace Formats http: //nsnam. isi. edu/nsnam/index. php/NS-2_Trace_Formats MPEG http: //hpds. ee. ncku. edu. tw/~smallko/ns 2. htm http: //hpds. ee. ncku. edu. tw/~smallko/ns 2/Evalvid_in_NS 2. htm RTP http: //140. 116. 72. 80/~yufrank/YCY/myevalvid_rtp. htm http: //hpds. ee. ncku. edu. tw/~smallko/ns 2/measure. htm http: //searun. iteye. com/blog/362415