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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>34.3.4 Detection of a Loss</TITLE><META NAME="description" CONTENT="34.3.4 Detection of a Loss"><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="node468.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node468.html"><LINK REL="previous" HREF="node466.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node466.html"><LINK REL="up" HREF="node463.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node463.html"><LINK REL="next" HREF="node468.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node468.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html8553" HREF="node468.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node468.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html8547" HREF="node463.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node463.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html8541" HREF="node466.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node466.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html8549" 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="tex2html8551" 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="tex2html8554" HREF="node468.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node468.html">34.3.5 Joining or Leaving</A><B> Up:</B> <A NAME="tex2html8548" HREF="node463.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node463.html">34.3 Architecture of the</A><B> Previous:</B> <A NAME="tex2html8542" HREF="node466.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node466.html">34.3.3 Reception of a</A>   <B> <A NAME="tex2html8550" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html8552" 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="SECTION06534000000000000000">34.3.4 Detection of a Loss</A></H2>Each time a loss is detected by an instance of the class PLMLossMonitor, a call tothe Agent/LossMonitor/PLM instproc <TT>log-loss</TT> is triggered. TheAgent/LossMonitor/PLM instproc <TT>log-loss</TT> is empty. In fact, we define the <TT>log-loss</TT> instproc for the classPLMLossTrace. The PLMLossTrace instproc <TT>log-loss</TT> simplycalls the PLM instproc <TT>log-loss</TT> which contains the PLM machinery in caseof loss. In summary, <TT>log-loss</TT> only drops a layer when the loss rateexceeds 10% (this test is executed by the PLM instproc <TT> exeed_loss_thresh</TT>). After a layer drop <TT>log-loss</TT> precludes anyother layer drop due to loss for 500ms. For details about the PLM instproc <TT> log-loss</TT>, refer to its code in tcl/plm/plm.tcl. <P><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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