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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>27.2.1.0.1 mrtObject class</TITLE><META NAME="description" CONTENT="27.2.1.0.1 mrtObject class"><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="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html"><LINK REL="previous" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html"><LINK REL="up" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html"><LINK REL="next" HREF="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html6331" HREF="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6325" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6319" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6327" 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="tex2html6329" 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="tex2html6332" HREF="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html">27.2.1.0.2 McastProtocol class</A><B> Up:</B> <A NAME="tex2html6326" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html">27.2.1 The classes</A><B> Previous:</B> <A NAME="tex2html6320" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html">27.2.1 The classes</A>   <B> <A NAME="tex2html6328" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6330" 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="SECTION05221010000000000000">27.2.1.0.1 mrtObject class</A></H4>There is one mrtObject (aka Arbiter) object per multicast capablenode. This object supports the ability for a node to run multiplemulticast routing protocols by maintaining an array of multicastprotocols indexed by the incoming interface. Thus, if there areseveral multicast protocols at a node, each interface is owned by justone protocol. Therefore, this object supports the ability for a nodeto run multiple multicast routing protocols. The node uses thearbiter to perform protocol actions, either to a specific protocolinstance active at that node, or to all protocol instances at thatnode.<BR><BR><P>In addition, the mrtObject class supports the concept of well knowngroups, , those groups that do not require explicit protocol support.Two well known groups, <TT>ALL_ROUTERS</TT> and <TT>ALL_PIM_ROUTERS</TT>are predefined in .<P>The mrtObject../ns-2/tcl/mcast/McastProto.tcl definestwo class procedures to set and get information about these well known groups.<BR><BR><P><HR><!--Navigation Panel--><A NAME="tex2html6331" HREF="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6325" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6319" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6327" 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="tex2html6329" 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="tex2html6332" HREF="node326.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node326.html">27.2.1.0.2 McastProtocol class</A><B> Up:</B> <A NAME="tex2html6326" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html">27.2.1 The classes</A><B> Previous:</B> <A NAME="tex2html6320" HREF="node324.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node324.html">27.2.1 The classes</A>   <B> <A NAME="tex2html6328" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6330" 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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