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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>37. Session-level Packet Distribution</TITLE><META NAME="description" CONTENT="37. Session-level Packet Distribution"><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="next" HREF="node538.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node538.html"><LINK REL="previous" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html"><LINK REL="up" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html"><LINK REL="next" HREF="node525.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node525.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html9455" HREF="node525.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node525.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html9449" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html9443" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html9451" 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="tex2html9453" 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="tex2html9456" HREF="node525.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node525.html">37.1 Configuration</A><B> Up:</B> <A NAME="tex2html9450" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html">7 Scale</A><B> Previous:</B> <A NAME="tex2html9444" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html">7 Scale</A>   <B> <A NAME="tex2html9452" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html9454" 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="SECTION08100000000000000000"></A><A NAME="chap:session"></A><BR>37. Session-level Packet Distribution</H1><P>This section describes the internals of the Session-level Packet Distributionimplementation in .The section is in two parts:the first part is an overview of Session configurationSectionsec:config,and a ``complete'' description of the configuration parameters of a Session.The second part describes the architecture, internals, and the code pathof the Session-level Packet distribution.<P>The procedures and functions described in this chapter can be found intcl/session/session.tcl.<P>Session-level Packet Distribution is oriented towardsperforming multicast simulations over large topologies.The memory requirements for some topologies usingsession level simulations are:<P><TABLE CELLPADDING=3><TR><TD ALIGN="RIGHT">2048 nodes, degree of connectivity = 8</TD><TD ALIGN="LEFT"> $$ </TD><TD ALIGN="RIGHT">40</TD><TD ALIGN="LEFT">MB</TD></TR><TR><TD ALIGN="RIGHT">2049-4096 nodes</TD><TD ALIGN="LEFT"> $$ </TD><TD ALIGN="RIGHT">167</TD><TD ALIGN="LEFT">MB</TD></TR><TR><TD ALIGN="RIGHT">4097-8194 nodes</TD><TD ALIGN="LEFT"> $$ </TD><TD ALIGN="RIGHT">671</TD><TD ALIGN="LEFT">MB</TD></TR></TABLE><P>Note however, that session level simulations ignore qeueing delays.Therefore, the accuracy ofsimulations that use sources with a high data rate,or those that use multiple sources that get aggregated at pointswithin the network is suspect.<P><BR><HR><!--Table of Child-Links--><A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A><UL><LI><A NAME="tex2html9457" HREF="node525.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node525.html">37.1 Configuration</A><UL><LI><A NAME="tex2html9458" HREF="node526.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node526.html">37.1.1 Basic Configuration</A><LI><A NAME="tex2html9459" HREF="node527.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node527.html">37.1.2 Inserting a Loss Module</A><UL><LI><A NAME="tex2html9460" HREF="node528.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node528.html">37.1.2.0.1 Creating a Loss Module</A><LI><A NAME="tex2html9461" HREF="node529.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node529.html">37.1.2.0.2 Inserting a Loss Module</A></UL></UL><BR><LI><A NAME="tex2html9462" HREF="node530.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node530.html">37.2 Architecture</A><LI><A NAME="tex2html9463" HREF="node531.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node531.html">37.3 Internals</A><UL><LI><A NAME="tex2html9464" HREF="node532.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node532.html">37.3.1 Object Linkage</A><UL><LI><A NAME="tex2html9465" HREF="node533.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node533.html">37.3.1.0.1 Nodes and Links</A><LI><A NAME="tex2html9466" HREF="node534.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node534.html">37.3.1.0.2 Session Helper</A><LI><A NAME="tex2html9467" HREF="node535.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node535.html">37.3.1.0.3 Delay and Loss Modules</A></UL><LI><A NAME="tex2html9468" HREF="node536.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node536.html">37.3.2 Packet Forwarding</A></UL><BR><LI><A NAME="tex2html9469" HREF="node537.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node537.html">37.4 Commands at a glance</A></UL><!--End of Table of Child-Links--><HR><!--Navigation Panel--><A NAME="tex2html9455" HREF="node525.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node525.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html9449" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html9443" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html9451" 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="tex2html9453" 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="tex2html9456" HREF="node525.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node525.html">37.1 Configuration</A><B> Up:</B> <A NAME="tex2html9450" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html">7 Scale</A><B> Previous:</B> <A NAME="tex2html9444" HREF="node523.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node523.html">7 Scale</A>   <B> <A NAME="tex2html9452" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html9454" 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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