📄 node528.html
字号:
<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>37.1.2.0.1 Creating a Loss Module</TITLE><META NAME="description" CONTENT="37.1.2.0.1 Creating a Loss Module"><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="node529.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node529.html"><LINK REL="previous" HREF="node527.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node527.html"><LINK REL="up" HREF="node527.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node527.html"><LINK REL="next" HREF="node529.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node529.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html9528" HREF="node529.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node529.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html9522" HREF="node527.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node527.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html9516" HREF="node527.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node527.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html9524" 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="tex2html9526" 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="tex2html9529" HREF="node529.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node529.html">37.1.2.0.2 Inserting a Loss</A><B> Up:</B> <A NAME="tex2html9523" HREF="node527.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node527.html">37.1.2 Inserting a Loss</A><B> Previous:</B> <A NAME="tex2html9517" HREF="node527.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node527.html">37.1.2 Inserting a Loss</A>   <B> <A NAME="tex2html9525" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html9527" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H4><A NAME="SECTION08112010000000000000">37.1.2.0.1 Creating a Loss Module</A></H4>Before we can insert a loss module in between a source-receiver pair,we have to create the loss module. Basically,a loss module compares two values to decide whether to drop a packet.The first value is obtained every time when the loss module receives a packet from a random variable. The second valueis fixed and configured when the loss module is created.<P>The following code gives an example to create a uniform 0.1 loss rate.<PRE> # creating the uniform distribution random variable set loss_random_variable [new RandomVariable/Uniform] $loss_random_variable set min_ 0 # set the range of the random variable; $loss_random_variable set max_ 100 set loss_module [new ErrorModel] # create the error model; $loss_module drop-target [new Agent/Null] $loss_module set rate_ 10 # set error rate to \(0.1 = 10 / (100 - 0)\); $loss_module ranvar $loss_random_variable # attach random var. to loss module;</PRE>A catalogue of the random variable distributions was described earlierChapterchap:math.A more detailed discussion of error models was also described earlierin a different chapterChapterchap:error_model.<P><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -