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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>41. Nam Trace</TITLE><META NAME="description" CONTENT="41. Nam Trace"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="previous" HREF="node554.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node554.html"><LINK REL="up" HREF="node553.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node553.html"><LINK REL="next" HREF="node563.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node563.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html10052" HREF="node563.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node563.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html10046" HREF="node553.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node553.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html10042" HREF="node561.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node561.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html10048" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html10050" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html10053" HREF="node563.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node563.html">41.1 Nam Trace Format</A><B> Up:</B> <A NAME="tex2html10047" HREF="node553.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node553.html">9 Visualization with Nam</A><B> Previous:</B> <A NAME="tex2html10043" HREF="node561.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node561.html">40.7 Animation Objects</A>   <B> <A NAME="tex2html10049" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html10051" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H1><A NAME="SECTION010200000000000000000"></A><A NAME="chap:namtrace"></A><BR>41. Nam Trace</H1><P>Nam is a Tcl/Tk based animation tool that is used to visualize the nssimulations and real world packet trace data. The first step to use nam isto produce a nam trace file. The nam trace file should contain topologyinformation like nodes, links, queues, node connectivity etc as well aspacket trace information. In this chapter we shall describe the nam traceformat and simple ns commands/APIs that can be used to produce topology configurations and control animation in nam.<P>The underlying design constraints for nam were that it is able to handle large amounts of trace data and that its animation primitives be adaptable so that it may be used in different types of network visualization. As a result, internally nam reads information from a file and keeps only a minimum amount of animation event information in memory. Its animation event has a fairly simple and consistent structure so that it can many different visualization situations. <P><BR><HR><!--Table of Child-Links--><A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A><UL><LI><A NAME="tex2html10054" HREF="node563.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node563.html">41.1 Nam Trace Format</A><UL><LI><A NAME="tex2html10055" HREF="node564.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node564.html">41.1.1 Initialization Events</A><LI><A NAME="tex2html10056" HREF="node565.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node565.html">41.1.2 Nodes</A><LI><A NAME="tex2html10057" HREF="node566.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node566.html">41.1.3 Links</A><LI><A NAME="tex2html10058" HREF="node567.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node567.html">41.1.4 Queues</A><LI><A NAME="tex2html10059" HREF="node568.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node568.html">41.1.5 Packets</A><LI><A NAME="tex2html10060" HREF="node569.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node569.html">41.1.6 Node Marking</A><LI><A NAME="tex2html10061" HREF="node570.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node570.html">41.1.7 Agent Tracing</A><LI><A NAME="tex2html10062" HREF="node571.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node571.html">41.1.8 Variable Tracing</A><LI><A NAME="tex2html10063" HREF="node572.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node572.html">41.1.9 Executing Tcl Procedures and External Code from within Nam</A><UL><LI><A NAME="tex2html10064" HREF="node573.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node573.html">41.1.9.1 Setting playback speed</A><LI><A NAME="tex2html10065" HREF="node574.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node574.html">41.1.9.2 Annotation</A><LI><A NAME="tex2html10066" HREF="node575.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node575.html">41.1.9.3 Node Exec Button</A></UL><LI><A NAME="tex2html10067" HREF="node576.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node576.html">41.1.10 Using Streams for Realtime Applications</A><LI><A NAME="tex2html10068" HREF="node577.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node577.html">41.1.11 Nam Trace File Format Lookup Table</A></UL><BR><LI><A NAME="tex2html10069" HREF="node578.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node578.html">41.2 Ns commands for creating and controlling nam animations</A><UL><LI><A NAME="tex2html10070" HREF="node579.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node579.html">41.2.1 Node</A><LI><A NAME="tex2html10071" HREF="node580.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node580.html">41.2.2 Link/Queue</A><LI><A NAME="tex2html10072" HREF="node581.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node581.html">41.2.3 Agent and Features</A><LI><A NAME="tex2html10073" HREF="node582.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node582.html">41.2.4 Some Generic Commands</A></UL></UL><!--End of Table of Child-Links--><HR><!--Navigation Panel--><A NAME="tex2html10052" HREF="node563.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node563.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html10046" HREF="node553.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node553.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html10042" HREF="node561.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node561.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html10048" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html10050" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html10053" HREF="node563.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node563.html">41.1 Nam Trace Format</A><B> Up:</B> <A NAME="tex2html10047" HREF="node553.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node553.html">9 Visualization with Nam</A><B> Previous:</B> <A NAME="tex2html10043" HREF="node561.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node561.html">40.7 Animation Objects</A>   <B> <A NAME="tex2html10049" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html10051" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <!--End of Navigation Panel--><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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