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      1 <refentry id="pg3">
      2 
      3 <refmeta>
      4 <refentrytitle>pg3</refentrytitle>
      5 <manvolnum>8</manvolnum>
      6 <refmiscinfo>iputils-&snapshot;</refmiscinfo>
      7 </refmeta>
      8 
      9 
     10 <refnamediv>
     11 <refname>pg3, ipg, pgset</refname>
     12 <refpurpose>send stream of UDP packets</refpurpose>
     13 </refnamediv>
     14 
     15 <refsynopsisdiv>
     16 <cmdsynopsis>
     17 <command>source ipg</command>
     18 </cmdsynopsis>
     19 <cmdsynopsis>
     20 <command>pg</command>
     21 </cmdsynopsis>
     22 <cmdsynopsis>
     23 <command>pgset</command>
     24 <arg choice="req"><replaceable/COMMAND/</arg>
     25 </cmdsynopsis>
     26 </refsynopsisdiv>
     27 
     28 <refsect1><title>DESCRIPTION</title>
     29 <para>
     30 <command/ipg/ is not a program, it is script which should be sourced
     31 to <command/bash/. When sourced it loads module <filename/pg3/ and
     32 exports a few of functions accessible from parent shell. These macros
     33 are <command/pg/ to start packet injection and to get the results of run;
     34 and <command/pgset/ to setup packet generator.
     35 </para>
     36 
     37 <para>
     38 <command/pgset/ can send the following commands to module <filename/pg3/:
     39 </para>
     40 </refsect1>
     41 
     42 <refsect1><title>COMMAND</title>
     43 
     44 <variablelist>
     45 
     46  <varlistentry>
     47   <term><option>odev <replaceable/DEVICE/</option></term>
     48   <listitem><para>
     49 Name of Ethernet device to test. See
     50 <link linkend="pg3.warning">warning</link> below.
     51   </para></listitem>
     52  </varlistentry>
     53 
     54  <varlistentry>
     55   <term><option>pkt_size <replaceable/BYTES/</option></term>
     56   <listitem><para>
     57 Size of packet to generate. The size includes all the headers: UDP, IP,
     58 MAC, but does not account for overhead internal to medium, i.e. FCS
     59 and various paddings.
     60   </para></listitem>
     61  </varlistentry>
     62 
     63  <varlistentry>
     64   <term><option>frags <replaceable/NUMBER/</option></term>
     65   <listitem><para>
     66 Each packet will contain <replaceable/NUMBER/ of fragments.
     67 Maximal amount for linux-2.4 is 6. Far not all the devices support
     68 fragmented buffers.
     69   </para></listitem>
     70  </varlistentry>
     71 
     72  <varlistentry>
     73   <term><option>count <replaceable/NUMBER/</option></term>
     74   <listitem><para>
     75 Send stream of <replaceable/NUMBER/ of packets and stop after this.
     76   </para></listitem>
     77  </varlistentry>
     78 
     79  <varlistentry>
     80   <term><option>ipg <replaceable/TIME/</option></term>
     81   <listitem><para>
     82 Introduce artificial delay between packets of <replaceable/TIME/
     83 microseconds.
     84   </para></listitem>
     85  </varlistentry>
     86 
     87  <varlistentry>
     88   <term><option>dst <replaceable/IP_ADDRESS/</option></term>
     89   <listitem><para>
     90 Select IP destination where the stream is sent to.
     91 Beware, never set this address at random. <command/pg3/ is not a toy,
     92 it creates really tough stream. Default value is 0.0.0.0.
     93   </para></listitem>
     94  </varlistentry>
     95 
     96  <varlistentry>
     97   <term><option>dst <replaceable/MAC_ADDRESS/</option></term>
     98   <listitem><para>
     99 Select MAC destination where the stream is sent to.
    100 Default value is 00:00:00:00:00:00 in hope that this will not be received
    101 by any node on LAN.
    102   </para></listitem>
    103  </varlistentry>
    104 
    105  <varlistentry>
    106   <term><option>stop</option></term>
    107   <listitem><para>
    108 Abort packet injection.
    109   </para></listitem>
    110  </varlistentry>
    111 
    112 </variablelist>
    113 </refsect1>
    114 
    115 <refsect1 id="pg3.warning"><title>WARNING</title>
    116 <para>
    117 When output device is set to some random device different
    118 of hardware Ethernet device, <command/pg3/ will crash kernel.
    119 </para>
    120 <para>
    121 Do not use it on VLAN, ethertap, VTUN and other devices,
    122 which emulate Ethernet not being real Ethernet in fact.
    123 </para>
    124 </refsect1>
    125 
    126 <refsect1><title>AUTHOR</title>
    127 <para>
    128 <command/pg3/ was written by <ulink url="mailto:robert.olsson (a] its.uu.se">
    129 Robert Olsson &lt;robert.olsson (a] its.uu.se&gt;</ulink>.
    130 </para>
    131 </refsect1>
    132 
    133 <refsect1><title>SECURITY</title>
    134 <para>
    135 This can be used only by superuser.
    136 </para>
    137 <para>
    138 This tool creates floods of packets which is unlikely to be handled
    139 even by high-end machines. For example, it saturates gigabit link with
    140 60 byte packets when used with Intel's e1000. In face of such stream
    141 switches, routers and end hosts may deadlock, crash, explode.
    142 Use only in test lab environment.
    143 </para>
    144 </refsect1>
    145 
    146 <refsect1><title>AVAILABILITY</title>
    147 <para>
    148 <command/pg3/ is part of <filename/iputils/ package
    149 and the latest versions are  available in source form at
    150 <ulink url="http://www.skbuff.net/iputils/iputils-current.tar.bz2">
    151 http://www.skbuff.net/iputils/iputils-current.tar.bz2</ulink>.
    152 </para>
    153 </refsect1>
    154 
    155 <![IGNORE[
    156 <refsect1><title>COPYING</title>
    157 <para>
    158 <literallayout>
    159 This documentation is free software; you can redistribute
    160 it and/or modify it under the terms of the GNU General Public
    161 License Version 2.
    162 
    163 This program is distributed in the hope that it will be
    164 useful, but WITHOUT ANY WARRANTY; without even the implied
    165 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    166 See the GNU General Public License for more details.
    167  
    168 For more details see the file COPYING in the source
    169 distribution of Linux kernel of version 2.4.
    170 </literallayout>
    171 </para>
    172 </refsect1>
    173 ]]>
    174 
    175 </refentry>
    176