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Add note about rate-estimators in FAQ 97a

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
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Tom Eastep 2013-04-03 07:28:23 -07:00
parent ee66a45e2e
commit 64e7675f45
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docs/FAQ.xml
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@ -2387,6 +2387,23 @@ root@gateway:/etc/shorewall#
<programlisting><emphasis role="bold">ethtool -K eth</emphasis>N <emphasis
role="bold">gro off</emphasis></programlisting>
<para>Beginning with Shorewall 4.4.25, another option is available in
the form of a <firstterm>rate-estimated policing
filter</firstterm>.</para>
<para>Example from /etc/shorewall/tcdevices:</para>
<programlisting>#NUMBER: IN-BANDWIDTH OUT-BANDWIDTH OPTIONS
#INTERFACE
1:COMB_IF <emphasis role="bold">~20mbit:250ms:4sec</emphasis> ${UPLOAD}kbit hfsc,linklayer=ethernet,overhead=0</programlisting>
<para>To create a rate-estimated filter, precede the bandwidth with a
tilde ("~"). The optional interval and decay_interval determine how
often the rate is estimated and how many samples are retained for
estimating. Please see <ulink
url="http://ace-host.stuart.id.au/russell/files/tc/doc/estimators.txt">http://ace-host.stuart.id.au/russell/files/tc/doc/estimators.txt</ulink>
for details.</para>
</section>
</section>