146 lines
2.9 KiB
HTML
146 lines
2.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of Route classifier in tc</TITLE>
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</HEAD><BODY>
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<H1>Route classifier in tc</H1>
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Section: Linux (8)<BR>Updated: 21 Oct 2015<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<P>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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route - route traffic control filter
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<BR>
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<B>tc</B> <B>filter</B> ... <B>route</B> [ <B>from</B>
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<I>REALM</I> |
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<B>fromif</B>
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<I>TAG</I> ] [
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<B>to</B>
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<I>REALM</I> ] [
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<B>classid</B>
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<I>CLASSID</I> ] [
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<B>action</B>
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<I>ACTION_SPEC</I> ]
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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Match packets based on routing table entries. This filter centers around the
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possibility to assign a
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<B>realm</B>
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to routing table entries. For any packet to be classified by this filter, a
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routing table lookup is performed and the returned
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<B>realm</B>
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is used to decide on whether the packet is a match or not.
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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<DL COMPACT>
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<DT id="1"><B>action</B><I> ACTION_SPEC</I>
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<DD>
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Apply an action from the generic actions framework on matching packets.
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<DT id="2"><B>classid</B><I> CLASSID</I>
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<DD>
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Push matching packets into the class identified by
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<I>CLASSID</I>.
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<DT id="3"><B>from</B><I> REALM</I>
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<DD>
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<B>fromif</B><I> TAG</I>
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Perform source route lookups.
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<I>TAG</I>
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is the name of an interface which must be present on the system at the time of
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<B>tc</B>
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invocation.
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<DT id="4"><B>to</B><I> REALM</I>
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<DD>
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Match if normal (i.e., destination) routing returns the given
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<I>REALM</I>.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>EXAMPLES</H2>
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Consider the subnet 192.168.2.0/24 being attached to eth0:
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<P>
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<DL COMPACT><DT id="5"><DD>
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ip route add 192.168.2.0/24 dev eth0 realm 2
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</DL>
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<P>
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The following
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<B>route</B>
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filter will then match packets from that subnet:
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<P>
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<DL COMPACT><DT id="6"><DD>
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tc filter add ... route from 2 classid 1:2
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</DL>
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<P>
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and pass packets on to class 1:2.
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<A NAME="lbAG"> </A>
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<H2>NOTES</H2>
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Due to implementation details,
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<B>realm</B>
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values must be in a range from 0 to 255, inclusive. Alternatively, a verbose
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name defined in /etc/iproute2/rt_realms may be given instead.
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<A NAME="lbAH"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?8+tc">tc</A></B>(8),
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<B><A HREF="/cgi-bin/man/man2html?8+ip-route">ip-route</A></B>(8)
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="7"><A HREF="#lbAB">NAME</A><DD>
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<DT id="8"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="9"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="10"><A HREF="#lbAE">OPTIONS</A><DD>
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<DT id="11"><A HREF="#lbAF">EXAMPLES</A><DD>
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<DT id="12"><A HREF="#lbAG">NOTES</A><DD>
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<DT id="13"><A HREF="#lbAH">SEE ALSO</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:06:17 GMT, March 31, 2021
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