1
0
mirror of https://gitlab.com/shorewall/code.git synced 2024-12-30 18:19:04 +01:00
shorewall_code/manpages/shorewall-tcdevices.xml
2011-03-02 07:42:24 -08:00

239 lines
8.8 KiB
XML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<refentry>
<refmeta>
<refentrytitle>shorewall-tcdevices</refentrytitle>
<manvolnum>5</manvolnum>
</refmeta>
<refnamediv>
<refname>tcdevices</refname>
<refpurpose>Shorewall Traffic Shaping Devices file</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>/etc/shorewall/tcdevices</command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>Entries in this file define the bandwidth for interfaces on which
you want traffic shaping to be enabled.</para>
<para>If you do not plan to use traffic shaping for a device, don't put it
in here as it limits the throughput of that device to the limits you set
here.</para>
<para>A note on the <emphasis>bandwidth</emphasis> definitions used in
this file:</para>
<itemizedlist>
<listitem>
<para>don't use a space between the integer value and the unit: 30kbit
is valid while 30 kbit is not.</para>
</listitem>
<listitem>
<para>you can use one of the following units:</para>
<variablelist>
<varlistentry>
<term><emphasis role="bold">kbps</emphasis></term>
<listitem>
<para>Kilobytes per second.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">mbps</emphasis></term>
<listitem>
<para>Megabytes per second.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">kbit</emphasis></term>
<listitem>
<para>Kilobits per second.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">mbit</emphasis></term>
<listitem>
<para>Megabits per second.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">bps</emphasis> or <emphasis
role="bold">number</emphasis></term>
<listitem>
<para>Bytes per second.</para>
</listitem>
</varlistentry>
</variablelist>
</listitem>
<listitem>
<para>Only whole integers are allowed.</para>
</listitem>
</itemizedlist>
<para>The columns in the file are as follows.</para>
<variablelist>
<varlistentry>
<term><emphasis role="bold">INTERFACE</emphasis> -
[<emphasis>number</emphasis>:]<emphasis>interface</emphasis></term>
<listitem>
<para>Name of <emphasis>interface</emphasis>. Each interface may be
listed only once in this file. You may NOT specify the name of an
alias (e.g., eth0:0) here; see <ulink
url="http://www.shorewall.net/FAQ.htm#faq18">http://www.shorewall.net/FAQ.htm#faq18</ulink></para>
<para>You may NOT specify wildcards here, e.g. if you have multiple
ppp interfaces, you need to put them all in here!</para>
<para>If the device doesn't exist, a warning message will be issued
during "shorewall [re]start" and "shorewall refresh" and traffic
shaping configuration will be skipped for that device.</para>
<para>Shorewall assigns a sequential <firstterm>interface
number</firstterm> to each interface (the first entry in the file is
interface 1, the second is interface 2 and so on) You can explicitly
specify the interface number by prefixing the interface name with
the number and a colon (":"). Example: 1:eth0.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">IN-BANDWIDTH</emphasis> -
<replaceable>bandwidth</replaceable>[:<replaceable>burst</replaceable>]</term>
<listitem>
<para>The incoming <emphasis>bandwidth</emphasis> of that interface.
Please note that you are not able to do traffic shaping on incoming
traffic, as the traffic is already received before you could do so.
But this allows you to define the maximum traffic allowed for this
interface in total, if the rate is exceeded, the packets are
dropped. You want this mainly if you have a DSL or Cable connection
to avoid queuing at your providers side.</para>
<para>If you don't want any traffic to be dropped, set this to a
value to zero in which case Shorewall will not create an ingress
qdisc.Must be set to zero if the REDIRECTED INTERFACES column is
non-empty.</para>
<para>The optional burst option was added in Shorewall 4.4.13. The
default <replaceable>burst</replaceable> is 10kb. A larger
<replaceable>burst</replaceable> can help make the
<replaceable>bandwidth</replaceable> more accurate; often for fast
lines, the enforced rate is well below the specified
<replaceable>bandwidth</replaceable>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">OUT-BANDWIDTH</emphasis> -
<emphasis>bandwidth</emphasis></term>
<listitem>
<para>The outgoing <emphasis>bandwidth</emphasis> of that interface.
This is the maximum speed your connection can handle. It is also the
speed you can refer as "full" if you define the tc classes in <ulink
url="shorewall-tcclasses.html">shorewall-tcclasses</ulink>(5).
Outgoing traffic above this rate will be dropped.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">OPTIONS</emphasis> - {<emphasis
role="bold">-</emphasis>|<emphasis
role="bold">{classify</emphasis>|hfsc} ,...}</term>
<listitem>
<para><option>classify</option> ― When specified, Shorewall will not
generate tc or Netfilter rules to classify traffic based on packet
marks. You must do all classification using CLASSIFY rules in <ulink
url="shorewall-tcrules.html">shorewall-tcrules</ulink>(5).</para>
<para><option>hfsc</option> - Shorewall normally uses the
<firstterm>Hierarchical Token Bucket</firstterm> queuing discipline.
When <option>hfsc</option> is specified, the <firstterm>Hierarchical
Fair Service Curves</firstterm> discipline is used instead.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><emphasis role="bold">REDIRECTED INTERFACES</emphasis> -
[<emphasis>interface</emphasis>[,<emphasis>interface</emphasis>]...]</term>
<listitem>
<para>May only be specified if the interface in the INTERFACE column
is an Intermediate Frame Block (IFB) device. Causes packets that
enter each listed interface to be passed through the egress filters
defined for this device, thus providing a form of incoming traffic
shaping. When this column is non-empty, the <emphasis
role="bold">classify</emphasis> option is assumed.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<variablelist>
<varlistentry>
<term>Example 1:</term>
<listitem>
<para>Suppose you are using PPP over Ethernet (DSL) and ppp0 is the
interface for this. The device has an outgoing bandwidth of 500kbit
and an incoming bandwidth of 6000kbit</para>
<programlisting> #INTERFACE IN-BANDWIDTH OUT-BANDWIDTH OPTIONS REDIRECTED
# INTERFACES
1:ppp0 6000kbit 500kbit</programlisting>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>FILES</title>
<para>/etc/shorewall/tcdevices</para>
</refsect1>
<refsect1>
<title>See ALSO</title>
<para><ulink
url="http://shorewall.net/traffic_shaping.htm">http://shorewall.net/traffic_shaping.htm</ulink></para>
<para>shorewall(8), shorewall-accounting(5), shorewall-actions(5),
shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5),
shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5),
shorewall-nat(5), shorewall-netmap(5), shorewall-params(5),
shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5),
shorewall-route_rules(5), shorewall-routestopped(5), shorewall-rules(5),
shorewall.conf(5), shorewall-secmarks(5), shorewall-tcclasses(5),
shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5),
shorewall-zones(5)</para>
</refsect1>
</refentry>