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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>28.3.1.0.3 SimpleLink../ns-2/ns-link.tcl</TITLE><META NAME="description" CONTENT="28.3.1.0.3 SimpleLink../ns-2/ns-link.tcl"><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="node350.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node350.html"><LINK REL="up" HREF="node348.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node348.html"><LINK REL="next" HREF="node352.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node352.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html6716" HREF="node352.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node352.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6710" HREF="node348.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node348.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6706" HREF="node350.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node350.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6712" 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="tex2html6714" 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="tex2html6717" HREF="node352.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node352.html">28.4 Deficencies in the</A><B> Up:</B> <A NAME="tex2html6711" HREF="node348.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node348.html">28.3.1 Extensions to Other</A><B> Previous:</B> <A NAME="tex2html6707" HREF="node350.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node350.html">28.3.1.0.2 Link../ns-2/ns-link.tcl</A>   <B> <A NAME="tex2html6713" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6715" 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="SECTION05331030000000000000">28.3.1.0.3 SimpleLink../ns-2/ns-link.tcl</A></H4>The class supports two instance procedures[]dynamic../ns-2/dynamics.tclSimpleLink::dynamic and[]trace-dynamics../ns-2/dynamics.tclSimpleLink::trace-dynamics.We have already described the latter procedure when describing the[]trace procedure in the class rtModel.<P>The instance procedure []dynamic inserts a DynamicLink objectSectionsec:links:connectorsat the head of the queue.It points the down-target of the object to the drop target of the link, <TT>drpT_</TT>, if the object is defined,or to the <TT>nullAgent_</TT> in the simulator.It also signals each connector in the link that the link is nowdynamic.<P>Most connectors ignore this signal to be become dynamic;the exception is <TT>DelayLink</TT> object.This object will normally schedule each packet it receivesfor reception by the destination node at the appropriate time.When the link is dynamic, the object will queue each packet internally; it schedules only one event for the next packetthat will be delivered, instead of one event per packet normally.If the link fails, the route model will signal a <TT>reset</TT>,at which point, the shadow object will execute itsreset instproc-like../ns-2/dynalink.ccDynaLink::command,and flush all packets in its internal queue.Additional details about the DelayLink can be foundin another chapterChapterchap:delays.<P><HR><!--Navigation Panel--><A NAME="tex2html6716" HREF="node352.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node352.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6710" HREF="node348.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node348.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6706" HREF="node350.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node350.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6712" 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="tex2html6714" 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="tex2html6717" HREF="node352.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node352.html">28.4 Deficencies in the</A><B> Up:</B> <A NAME="tex2html6711" HREF="node348.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node348.html">28.3.1 Extensions to Other</A><B> Previous:</B> <A NAME="tex2html6707" HREF="node350.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node350.html">28.3.1.0.2 Link../ns-2/ns-link.tcl</A>   <B> <A NAME="tex2html6713" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6715" 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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