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104 lines
3.9 KiB
XML
104 lines
3.9 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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]>
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<sect1 id="dhcp-client" xreflabel="DHCP-&dhcp-version; Client Configuration">
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<?dbhtml filename="dhcpclient.html"?>
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<title>DHCP-&dhcp-version; Client Configuration</title>
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<indexterm zone="dhcp-client">
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<primary sortas="b-dhclient">dhclient</primary>
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</indexterm>
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<para>The <application>DHCP</application> package comes with
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both a client (<command>dhclient</command>) and a server program for
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using DHCP. If you want to install this package,
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the instructions can be found at <xref linkend="dhcp"/>.
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Note that if you only want to use the client, you
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do <emphasis>not</emphasis> need to run the server and so do not need
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the startup script and links provided for the server daemon.
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You only need to run the DHCP server if you're providing
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this service to a network, and it's likely that you'll know if that's the
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case; if it isn't, don't run the server! Once you have installed the
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package, return here for information on how to configure the client
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(<command>dhclient</command>).</para>
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<sect2 role="configuration">
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<title>Configuring DHCP Client</title>
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<para id="dhclient-service1010">To configure <command>dhclient</command>,
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you need to first install the network service script,
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<filename>/lib/services/dhclient</filename>
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included in the <xref linkend="bootscripts"/> package
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(as <systemitem class="username">root</systemitem>):</para>
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<indexterm zone="dhcp-client dhclient-service1010">
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<primary sortas="f-dhclient">dhclient (service script)</primary>
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</indexterm>
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<screen role='root'><userinput>make install-service-dhclient</userinput></screen>
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<para id="dhclient-config1">Next, create the
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<filename>/etc/sysconfig/ifconfig.eth0</filename>
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configuration file with the following commands as the <systemitem
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class="username">root</systemitem> user. Adjust as
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necessary for additional interfaces:</para>
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<indexterm zone="dhcp-client dhclient-config1">
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<primary sortas="e-etc-sysconfig-...-dhclient">/etc/sysconfig/ifconfig.eth0</primary>
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</indexterm>
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<screen role='root'><userinput>cat > /etc/sysconfig/ifconfig.eth0 << "EOF"
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<literal>ONBOOT="yes"
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IFACE="eth0"
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SERVICE="dhclient"
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DHCP_START="<replaceable><add additional start parameters here></replaceable> eth0"
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DHCP_STOP="-r <replaceable><add additional stop parameters here></replaceable>"
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# Set PRINTIP="yes" to have the script print
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# the DHCP assigned IP address
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PRINTIP="no"
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# Set PRINTALL="yes" to print the DHCP assigned values for
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# IP, SM, DG, and 1st NS. This requires PRINTIP="yes".
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PRINTALL="no"</literal>
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EOF</userinput></screen>
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<para>For more information on the appropriate
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<envar>DHCP_START</envar> and <envar>DHCP_STOP</envar>
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values, examine the man page for <command>dhclient</command>.</para>
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<para id="dhclient-config2">Finally, you should create the
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<filename>/etc/dhclient.conf</filename> file using the following commands
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as the <systemitem class="username">root</systemitem> user:</para>
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<indexterm zone="dhcp-client dhclient-config2">
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<primary sortas="e-etc-dhclient.conf">/etc/dhclient.conf</primary>
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</indexterm>
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<note>
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<para>You'll need to add a second interface definition to the file if you
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have more than one interface.</para>
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</note>
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<screen role='root'><userinput>cat > /etc/dhclient.conf << "EOF"
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<literal># dhclient.conf
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interface "eth0"{
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prepend domain-name-servers 127.0.0.1;
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request subnet-mask, broadcast-address, time-offset, routers,
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domain-name, domain-name-servers, host-name;
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require subnet-mask, domain-name-servers;
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}
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# end dhclient.conf</literal>
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EOF</userinput></screen>
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</sect2>
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</sect1>
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