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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>27.2.2 Extensions to other classes in </TITLE><META NAME="description" CONTENT="27.2.2 Extensions to other classes in "><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="node333.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node333.html"><LINK REL="previous" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html"><LINK REL="up" HREF="node323.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node323.html"><LINK REL="next" HREF="node328.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node328.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html6357" HREF="node328.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node328.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6351" HREF="node323.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node323.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6345" HREF="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6353" 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="tex2html6355" 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="tex2html6358" HREF="node328.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node328.html">27.2.2.0.1 Class Node</A><B> Up:</B> <A NAME="tex2html6352" HREF="node323.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node323.html">27.2 Internals of Multicast</A><B> Previous:</B> <A NAME="tex2html6346" HREF="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html">27.2.1.0.2 McastProtocol class</A>   <B> <A NAME="tex2html6354" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6356" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H2><A NAME="SECTION05222000000000000000">27.2.2 Extensions to other classes in </A></H2>In the earlier chapter describing nodes inChapterchap:nodes, we described the internal structure of thenode in . To briefly recap that description, the node entry for amulticast node is the<TT>switch<BR>_</TT>. It looks at the highest bit to decide if thedestination is a multicast or unicast packet. Multicast packets areforwarded to a multicast classifier which maintains a list ofreplicators; there is one replicator per source, group tuple.Replicators copy the incoming packet and forward to all outgoinginterfaces.<P><BR><HR><!--Table of Child-Links--><A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A><UL><LI><UL><LI><A NAME="tex2html6359" HREF="node328.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node328.html">27.2.2.0.1 Class Node</A><LI><A NAME="tex2html6360" HREF="node329.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node329.html">27.2.2.0.2 Class Link and SimpleLink</A><LI><A NAME="tex2html6361" HREF="node330.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node330.html">27.2.2.0.3 Class NetworkInterface</A><LI><A NAME="tex2html6362" HREF="node331.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node331.html">27.2.2.0.4 Class Multicast Classifier</A><LI><A NAME="tex2html6363" HREF="node332.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node332.html">27.2.2.0.5 Class Replicator</A></UL></UL><!--End of Table of Child-Links--><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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