<HTML ><HEAD ><TITLE >Generic Random Early Detection</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Linux Advanced Routing & Traffic Control HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Advanced & less common queueing disciplines" HREF="lartc.adv-qdisc.html"><LINK REL="PREVIOUS" TITLE="Random Early Detection (RED)" HREF="lartc.adv-qdisc.red.html"><LINK REL="NEXT" TITLE="VC/ATM emulation" HREF="lartc.adv-qdisc.vc-atm.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Linux Advanced Routing & Traffic Control HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="lartc.adv-qdisc.red.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 14. Advanced & less common queueing disciplines</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="lartc.adv-qdisc.vc-atm.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="LARTC.ADV-QDISC.GRED" ></A >14.6. Generic Random Early Detection</H1 ><P >Not a lot is known about GRED. It looks like GRED with several internal queues, whereby the internal queue is chosen based on the Diffserv tcindex field. According to a slide found <A HREF="http://www.davin.ottawa.on.ca/ols/img22.htm" TARGET="_top" >here</A >, it contains the capabilities of Cisco's 'Distributed Weighted RED', as well as Dave Clark's RIO.</P ><P >Each virtual queue can have its own Drop Parameters specified.</P ><P >FIXME: get Jamal or Werner to tell us more</P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="lartc.adv-qdisc.red.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="lartc.adv-qdisc.vc-atm.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Random Early Detection (RED)</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="lartc.adv-qdisc.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >VC/ATM emulation</TD ></TR ></TABLE ></DIV ></BODY ></HTML >