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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>39.3.0.0.1 Configuration</TITLE><META NAME="description" CONTENT="39.3.0.0.1 Configuration"><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="node543.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node543.html"><LINK REL="up" HREF="node543.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node543.html"><LINK REL="next" HREF="node545.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node545.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html9769" HREF="node545.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node545.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html9763" HREF="node543.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node543.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html9759" HREF="node543.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node543.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html9765" 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="tex2html9767" 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="tex2html9770" HREF="node545.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node545.html">39.4 Network Objects</A><B> Up:</B> <A NAME="tex2html9764" HREF="node543.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node543.html">39.3 Tap Agents</A><B> Previous:</B> <A NAME="tex2html9760" HREF="node543.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node543.html">39.3 Tap Agents</A>   <B> <A NAME="tex2html9766" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html9768" 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="SECTION09130010000000000000">39.3.0.0.1 Configuration</A></H4>Tap agents are able to send and receive packets to/from anassociated <TT>Network</TT> object.Assuming a network object <TT>$netobj</TT> refers to a networkobject, a tap agent is configured using the <TT>network</TT> method:<PRE> set a0 [new Agent/Tap] $a0 network $netobj $a0 set fid_ 26 $a0 set prio_ 2 $ns connect $a0 $a1</PRE>Note that the configuration of the flow ID and priority arehandled through the <TT>Agent</TT> base class.The purpose of setting the flow id field in the common headeris to label packets belonging to particular flows of live data.Such packets can be differentially treated with respectto drops, reorderings, etc.The <TT>connect</TT> method instructs agent <TT>$a0</TT> to sendits live traffic to the <TT>$a1</TT> agent via the currentroute through the simulated topology.<P><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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