source: archive/dhcp-client.xml@ 697cb83f

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Last change on this file since 697cb83f was 697cb83f, checked in by Krejzi <krejzi@…>, 9 years ago

ISC DHCP 4.2.4-P1 with bootscript and network service updates. Merged dhcp client configuration into dhcp page.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@10519 af4574ff-66df-0310-9fd7-8a98e5e911e0

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File size: 4.0 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="dhcp-client" xreflabel="DHCP-&dhcp-version; Client Configuration">
9 <?dbhtml filename="dhcpclient.html"?>
10
11 <sect1info>
12 <othername>$LastChangedBy$</othername>
13 <date>$Date$</date>
14 </sect1info>
15
16 <title>DHCP-&dhcp-version; Client Configuration</title>
17
18 <indexterm zone="dhcp-client">
19 <primary sortas="b-dhclient">dhclient</primary>
20 </indexterm>
21
22 <para>The <application>DHCP</application> package comes with
23 both a client (<command>dhclient</command>) and a server program for
24 using DHCP. If you want to install this package,
25 the instructions can be found at <xref linkend="dhcp"/>.
26 Note that if you only want to use the client, you
27 do <emphasis>not</emphasis> need to run the server and so do not need
28 the startup script and links provided for the server daemon.
29 You only need to run the DHCP server if you're providing
30 this service to a network, and it's likely that you'll know if that's the
31 case; if it isn't, don't run the server! Once you have installed the
32 package, return here for information on how to configure the client
33 (<command>dhclient</command>).</para>
34
35 <sect2 role="configuration">
36 <title>Configuring DHCP Client</title>
37
38 <para id="dhclient-service1010">To configure <command>dhclient</command>,
39 you need to first install the network service script,
40 <filename>/lib/services/dhclient</filename>
41 included in the <xref linkend="bootscripts"/> package
42 (as <systemitem class="username">root</systemitem>):</para>
43
44 <indexterm zone="dhcp-client dhclient-service1010">
45 <primary sortas="f-dhclient">dhclient (service script)</primary>
46 </indexterm>
47
48<screen role='root'><userinput>make install-service-dhclient</userinput></screen>
49
50 <para id="dhclient-config1">Next, create the
51 <filename>/etc/sysconfig/ifconfig.eth0</filename>
52 configuration file with the following commands as the <systemitem
53 class="username">root</systemitem> user. Adjust as
54 necessary for additional interfaces:</para>
55
56 <indexterm zone="dhcp-client dhclient-config1">
57 <primary sortas="e-etc-sysconfig-...-dhclient">/etc/sysconfig/ifconfig.eth0</primary>
58 </indexterm>
59
60<screen role='root'><userinput>cat &gt; /etc/sysconfig/ifconfig.eth0 &lt;&lt; "EOF"
61<literal>ONBOOT="yes"
62IFACE="eth0"
63SERVICE="dhclient"
64DHCP_START="<replaceable>&lt;add additional start parameters here&gt;</replaceable> eth0"
65DHCP_STOP="-r <replaceable>&lt;add additional stop parameters here&gt;</replaceable>"
66
67# Set PRINTIP="yes" to have the script print
68# the DHCP assigned IP address
69PRINTIP="no"
70
71# Set PRINTALL="yes" to print the DHCP assigned values for
72# IP, SM, DG, and 1st NS. This requires PRINTIP="yes".
73PRINTALL="no"</literal>
74EOF</userinput></screen>
75
76 <para>For more information on the appropriate
77 <envar>DHCP_START</envar> and <envar>DHCP_STOP</envar>
78 values, examine the man page for <command>dhclient</command>.</para>
79
80 <para id="dhclient-config2">Finally, you should create the
81 <filename>/etc/dhclient.conf</filename> file using the following commands
82 as the <systemitem class="username">root</systemitem> user:</para>
83
84 <indexterm zone="dhcp-client dhclient-config2">
85 <primary sortas="e-etc-dhclient.conf">/etc/dhclient.conf</primary>
86 </indexterm>
87
88 <note>
89 <para>You'll need to add a second interface definition to the file if you
90 have more than one interface.</para>
91 </note>
92
93<screen role='root'><userinput>cat &gt; /etc/dhclient.conf &lt;&lt; "EOF"
94<literal># dhclient.conf
95
96interface "eth0"{
97prepend domain-name-servers 127.0.0.1;
98request subnet-mask, broadcast-address, time-offset, routers,
99 domain-name, domain-name-servers, host-name;
100require subnet-mask, domain-name-servers;
101}
102# end dhclient.conf</literal>
103EOF</userinput></screen>
104
105 </sect2>
106
107</sect1>
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