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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>28.4 Deficencies in the Current Network Dynamics API</TITLE><META NAME="description" CONTENT="28.4 Deficencies in the Current Network Dynamics API"><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="node353.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node353.html"><LINK REL="previous" HREF="node347.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node347.html"><LINK REL="up" HREF="node338.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node338.html"><LINK REL="next" HREF="node353.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node353.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html6730" HREF="node353.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node353.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6724" HREF="node338.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node338.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6718" HREF="node351.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node351.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6726" 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="tex2html6728" 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="tex2html6731" HREF="node353.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node353.html">28.5 Commands at a</A><B> Up:</B> <A NAME="tex2html6725" HREF="node338.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node338.html">28. Network Dynamics</A><B> Previous:</B> <A NAME="tex2html6719" HREF="node351.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node351.html">28.3.1.0.3 SimpleLink../ns-2/ns-link.tcl</A>   <B> <A NAME="tex2html6727" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6729" 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="SECTION05340000000000000000"></A><A NAME="sec:deficiencies"></A><BR>28.4 Deficencies in the Current Network Dynamics API</H1><P>There are a number of deficencies in the current API that should bechanged in the next iteration:<OL><LI>There is no way to specify a cluster of nodes or links thatbehave in lock-step dynamic synchrony.</LI><LI>Node failure should be dealt with as its own mechanism,rather than a second grade citizen of link failure.This shows up in a number of situations, such as:<OL><LI>The method of emulating node failure as the failure of theincident links is broken. Ideally, node failure should cause allagents incident on the node to be reset.</LI><LI>There is no tracing associated with node failure.</LI></OL></LI><LI>If two distinct route models are applied to two separate linksincident on a common node, and the two links experience a topology changeat the same instant, then the node will be notified more than once.</LI></OL><P><HR><!--Navigation Panel--><A NAME="tex2html6730" HREF="node353.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node353.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6724" HREF="node338.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node338.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6718" HREF="node351.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node351.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6726" 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="tex2html6728" 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="tex2html6731" HREF="node353.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node353.html">28.5 Commands at a</A><B> Up:</B> <A NAME="tex2html6725" HREF="node338.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node338.html">28. Network Dynamics</A><B> Previous:</B> <A NAME="tex2html6719" HREF="node351.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node351.html">28.3.1.0.3 SimpleLink../ns-2/ns-link.tcl</A>   <B> <A NAME="tex2html6727" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6729" 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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