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Warn about absense of the 'flow' classifier.

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep 2010-02-08 06:45:11 -08:00
parent 18d03a61f5
commit 6239218db5
1 changed files with 15 additions and 0 deletions
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15
docs/simple_traffic_shaping.xml
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@ -65,6 +65,21 @@
<programlisting>#INTERFACE TYPE IN-BANDWIDTH
eth0 External</programlisting>
<note>
<para>If you experience an error such as the following during
<command>shorewall start</command> or <command>shorewall
restart</command>, your kernel and iproute do not support the <emphasis
role="bold">flow</emphasis> classifier. In that case, you must leave the
TYPE column empty (or specify '-').</para>
<programlisting>Unknown filter "flow", hence option "hash" is unparsable
ERROR: Command "tc filter add dev eth0 protocol all prio 1 parent 11: handle 11 flow hash keys nfct-src divisor 1024" Failed</programlisting>
<para>RHEL5-based systems such as <trademark>CentOS</trademark> 5 and
<trademark>Foobar</trademark> 5 are known to experience this
error.</para>
</note>
<para>With this simple configuration, packets to be sent through interface
eth0 will be assigned to a priority band based on the value of their TOS
field:</para>