1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY bridge-download-http "https://www.kernel.org/pub/linux/utils/net/bridge-utils/bridge-utils-&bridgeutils-version;.tar.xz">
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8 | <!ENTITY bridge-download-ftp " ">
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9 | <!ENTITY bridge-md5sum "541ae1c50cc268056693608920e6c908">
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10 | <!ENTITY bridge-size "32 KB">
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11 | <!ENTITY bridge-buildsize "916 KB">
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12 | <!ENTITY bridge-time "less than 0.1 SBU">
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13 | ]>
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14 |
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15 | <sect1 id="bridgeutils" xreflabel="bridge-utils-&bridgeutils-version;">
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16 | <?dbhtml filename="bridge-utils.html"?>
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17 |
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18 | <sect1info>
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19 | <othername>$LastChangedBy$</othername>
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20 | <date>$Date$</date>
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21 | </sect1info>
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22 |
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23 | <title>bridge-utils-&bridgeutils-version;</title>
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24 |
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25 | <indexterm zone="bridgeutils">
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26 | <primary sortas="a-bridgeutils">bridge-utils</primary>
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27 | </indexterm>
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28 |
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29 | <sect2 role="package">
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30 | <title>Introduction to bridge-utils</title>
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31 |
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32 | <para>The <application>bridge-utils</application> package contains a utility
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33 | needed to create and manage bridge devices. This is useful in setting up
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34 | networks for a hosted virtual machine (VM).</para>
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35 |
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36 | &lfs80_checked;
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37 |
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38 | <bridgehead renderas="sect3">Package Information</bridgehead>
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39 | <itemizedlist spacing="compact">
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40 | <listitem>
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41 | <para>Download (HTTP): <ulink url="&bridge-download-http;"/></para>
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42 | </listitem>
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43 | <listitem>
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44 | <para>Download (FTP): <ulink url="&bridge-download-ftp;"/></para>
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45 | </listitem>
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46 | <listitem>
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47 | <para>Download MD5 sum: &bridge-md5sum;</para>
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48 | </listitem>
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49 | <listitem>
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50 | <para>Download size: &bridge-size;</para>
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51 | </listitem>
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52 | <listitem>
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53 | <para>Estimated disk space required: &bridge-buildsize;</para>
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54 | </listitem>
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55 | <listitem>
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56 | <para>Estimated build time: &bridge-time;</para>
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57 | </listitem>
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58 | </itemizedlist>
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59 |
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60 | <bridgehead renderas="sect3">bridge-utils Dependencies</bridgehead>
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61 |
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62 | <bridgehead renderas="sect4">Optional (to run tests)</bridgehead>
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63 | <para role="optional">
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64 | <xref linkend="net-tools"/>
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65 | </para>
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66 |
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67 | <para condition="html" role="usernotes">User Notes:
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68 | <ulink url="&blfs-wiki;/bridge"/></para>
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69 |
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70 | </sect2>
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71 |
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72 | <sect2 role="kernel" id='bridgeutils-kernel'>
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73 | <title>Kernel Configuration</title>
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74 |
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75 | <para>Enable the following options in the kernel configuration
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76 | and recompile the kernel if necessary:</para>
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77 |
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78 | <screen><literal>[*] Networking support ---> [CONFIG_NET]
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79 | Networking options --->
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80 | <*/M> 802.1d Ethernet Bridging [CONFIG_BRIDGE]</literal></screen>
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81 |
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82 | <indexterm zone="bridgeutils bridgeutils-kernel">
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83 | <primary sortas="d-bridgeutils">Bridge Utilities</primary>
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84 | </indexterm>
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85 |
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86 | </sect2>
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87 |
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88 | <sect2 role="installation">
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89 | <title>Installation of bridge-utils</title>
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90 |
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91 | <para>Install <application>bridge-utils</application> by running the following
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92 | commands:</para>
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93 |
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94 | <screen><userinput>
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95 | autoconf &&
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96 | ./configure --prefix=/usr &&
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97 | make</userinput></screen>
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98 |
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99 | <para>Testing the results requires running the six shell scripts in
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100 | the <filename class='directory'>tools/</filename> directory.
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101 | Two of the tests require two ethernet ports. Some tests
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102 | will not preserve the current network configuration. See
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103 | <filename>tests/README</filename> for details.</para>
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104 |
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105 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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106 |
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107 | <screen role="root"><userinput>make install</userinput></screen>
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108 |
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109 | </sect2>
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110 |
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111 | <sect2 role="configuration">
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112 | <title>Configuring bridge-utils</title>
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113 |
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114 | <sect3 id='bridgeutils-init' revision="sysv">
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115 | <title>Configuration Information</title>
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116 |
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117 | <para>To automate bridge creation and configuration,
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118 | install the <filename>/lib/services/etc/bridge</filename>
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119 | service script included in the <xref linkend="bootscripts"/>
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120 | package.</para>
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121 |
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122 | <indexterm zone="bridgeutils bridgeutils-init">
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123 | <primary sortas="f-bridgeutils">bridge-utils</primary>
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124 | </indexterm>
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125 |
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126 | <screen role="root"><userinput>make install-service-bridge</userinput></screen>
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127 |
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128 | <note><para>The <filename>bridge</filename> script depends
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129 | on the commands <command>/sbin/ifup</command> and
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130 | <command>/sbin/ifdown</command> and the service script
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131 | <emphasis>ipv4-static</emphasis> from the <emphasis>LFS</emphasis>
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132 | bootscripts dated January 27, 2012 or later.</para></note>
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133 |
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134 | <para>The following configuration file will create a bridge device at
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135 | boot time and attach the eth0 device to it. If more than one device is
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136 | desired, use a space separated list of INTERFACE_COMPONENTS. This
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137 | configuration is useful when planning to run a virtual machine such as
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138 | kvm/qemu.</para>
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139 |
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140 | <para>Other SERVICE combinations are possible, for example,
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141 | SERVICES="bridge dhcp". In that case, the address parameters
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142 | are not needed, but do not interfere if present. The
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143 | bridge service may also be used alone, but will require
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144 | additional subsequent configuration.</para>
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145 |
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146 | <caution><para>Do not run a parallel configuration for a device in the
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147 | INTERFACE_COMPONENTS list. For instance, in the example below, do not
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148 | configure <filename>/etc/sysconfig/ifconfig.eth0</filename> to run at
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149 | boot time. The command <command>ifdown br0</command> followed by
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150 | command <command>ifup eth0</command> will work, but don't try to have
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151 | both up at the same time.</para></caution>
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152 |
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153 | <screen role="root"><userinput>cat > /etc/sysconfig/ifconfig.br0 << "EOF"
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154 | <literal>ONBOOT=yes
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155 | IFACE=br0
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156 | SERVICE="bridge ipv4-static" # Space separated
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157 | IP=192.168.1.32
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158 | GATEWAY=192.168.1.1
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159 | PREFIX=24
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160 | BROADCAST=192.168.1.255
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161 | CHECK_LINK=no # Don't check before bridge is created
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162 | STP=no # Spanning tree protocol, default no
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163 | INTERFACE_COMPONENTS="eth0" # Add to IFACE, space separated devices
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164 | IP_FORWARD=true</literal>
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165 | EOF</userinput></screen>
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166 |
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167 | <para>All addresses should be changed to meet your circumstance.</para>
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168 |
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169 | </sect3>
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170 |
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171 | <sect3 id='bridgeutils-init-systemd' revision="systemd">
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172 | <title>Configuration Information</title>
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173 | <para>TBA</para>
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174 | </sect3>
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175 |
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176 | </sect2>
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177 |
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178 |
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179 | <sect2 role="content">
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180 | <title>Contents</title>
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181 |
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182 | <segmentedlist>
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183 | <segtitle>Installed Program</segtitle>
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184 | <segtitle>Installed Libraries</segtitle>
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185 | <segtitle>Installed Directories</segtitle>
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186 |
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187 | <seglistitem>
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188 | <seg>brctl</seg>
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189 | <seg>None</seg>
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190 | <seg>None</seg>
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191 | </seglistitem>
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192 | </segmentedlist>
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193 |
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194 | <variablelist>
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195 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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196 | <?dbfo list-presentation="list"?>
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197 | <?dbhtml list-presentation="table"?>
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198 |
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199 | <varlistentry id="brctl">
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200 | <term><command>brctl</command></term>
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201 | <listitem>
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202 | <para>is a program used to set up, maintain, and inspect the
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203 | ethernet bridge configuration in the linux kernel. </para>
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204 | <indexterm zone="bridgeutils brctl">
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205 | <primary sortas="b-brctl">brctl</primary>
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206 | </indexterm>
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207 | </listitem>
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208 | </varlistentry>
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209 |
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210 | </variablelist>
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211 |
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212 | </sect2>
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213 |
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214 | </sect1>
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