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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>26.7 Commands at a glance</TITLE><META NAME="description" CONTENT="26.7 Commands at a glance"><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="node313.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node313.html"><LINK REL="up" HREF="node286.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node286.html"><LINK REL="next" HREF="node315.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node315.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html6134" HREF="node315.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node315.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6128" HREF="node286.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node286.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6124" HREF="node313.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node313.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6130" 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="tex2html6132" 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="tex2html6135" HREF="node315.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node315.html">27. Multicast Routing</A><B> Up:</B> <A NAME="tex2html6129" HREF="node286.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node286.html">26. Unicast Routing</A><B> Previous:</B> <A NAME="tex2html6125" HREF="node313.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node313.html">26.6 Unicast routing objects</A>   <B> <A NAME="tex2html6131" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6133" 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="SECTION05170000000000000000"></A><A NAME="sec:unicastcommand"></A><BR>26.7 Commands at a glance</H1><P>Following is a list of unicast routing related commands used in simulationscripts:<DIV ALIGN="LEFT"><TT>$ns_ rtproto routing-proto args</TT></DIV><P><DIV ALIGN="LEFT">where <routing-proto> defines the type of routing protocol to be used, likeStatic, Manual, Session , DV etc. args may define the list of nodes onwhich the protocol is to be run. The node list defaults to all nodes inthe topology.</DIV><P><DIV ALIGN="LEFT">Internal methods:</DIV><P><DIV ALIGN="LEFT"><TT>$ns_ compute-routes</TT></DIV><P><DIV ALIGN="LEFT">This command computes <TT>next_hop</TT> information for all nodes in thetopology using the topology connectivity. This <TT>next_hop</TT> info isthen used to populate the node classifiers or the routing tables.compute-routes calls compute-flat-routes or compute-hier-routes dependingon the type of addressing being used for the simulation.</DIV><P><DIV ALIGN="LEFT"><TT>$ns_ get-routelogic</TT></DIV><P><DIV ALIGN="LEFT">This returns a handle to the RouteLogic object (the routing table),if one has been created. Otherwise a new routing table object is created.</DIV><P><DIV ALIGN="LEFT"><TT>$ns_ dump-routelogic-nh</TT></DIV><P><DIV ALIGN="LEFT">This dumps next hop information in the routing table.</DIV><P><DIV ALIGN="LEFT"><TT>$ns_ dump-routelogic-distance</TT></DIV><P><DIV ALIGN="LEFT">This dumps the distance information in the routing table.</DIV><P><DIV ALIGN="LEFT"><TT>$node add-route dst Target</TT></DIV><P><DIV ALIGN="LEFT">This is a method used to add routing entries (nexthop information) inthe node's routing table. The nexthop to <dst> from this node is the <target> objectand this info is added to the node's classifier.</DIV><P><DIV ALIGN="LEFT"><TT>$routelogic lookup srcid destid</TT></DIV><P><DIV ALIGN="LEFT">Returns the id of the node that is the next hop from the node with idsrcid to the node with id destid. </DIV><P><DIV ALIGN="LEFT"><TT>$routelogic dump nodeid</TT></DIV><P><DIV ALIGN="LEFT">Dump the routing tables of all nodes whose id is less than nodeid. Nodeids are typically assigned to nodes in ascending fashion starting from 0by their order of creation. </DIV><P><DIV ALIGN="LEFT"><TT>rtobject dump-routes fileID</TT></DIV><P><DIV ALIGN="LEFT">Dump the routing table to the output channel specified by fileID. fileIDmust be a file handle returned by the Tcl open command and it must havebeen opened for writing. </DIV><P><DIV ALIGN="LEFT"><TT>$rtobject rtProto? proto</TT></DIV><P><DIV ALIGN="LEFT">Returns a handle to the routing protocol agent specified by proto if itexists at that node. Returns an empty string otherwise. </DIV><P><DIV ALIGN="LEFT"><TT>$rtobject nextHop? destID</TT></DIV><P><DIV ALIGN="LEFT">Returns the id of the node that is the next hop to the destinationspecified by the node id, <destID>. </DIV><P><DIV ALIGN="LEFT"><TT>$rtobject rtpref? destID </TT></DIV><P><DIV ALIGN="LEFT">Returns the preference for the route to destination node given by destid.</DIV><P><DIV ALIGN="LEFT"><TT>$rtobject metric? destID </TT></DIV><P><DIV ALIGN="LEFT">Returns metric for the route to destid.</DIV><P><DIV ALIGN="LEFT"></DIV><HR><!--Navigation Panel--><A NAME="tex2html6134" HREF="node315.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node315.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html6128" HREF="node286.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node286.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html6124" HREF="node313.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node313.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html6130" 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="tex2html6132" 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="tex2html6135" HREF="node315.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node315.html">27. Multicast Routing</A><B> Up:</B> <A NAME="tex2html6129" HREF="node286.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node286.html">26. Unicast Routing</A><B> Previous:</B> <A NAME="tex2html6125" HREF="node313.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node313.html">26.6 Unicast routing objects</A>   <B> <A NAME="tex2html6131" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html6133" 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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