[0931098] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[6732c094] | 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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[0931098] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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[d378ea3c] | 6 | <!ENTITY dhcp-download-http "http://gd.tuwien.ac.at/infosys/servers/isc/dhcp/dhcp-&dhcp-version;.tar.gz">
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| 7 | <!ENTITY dhcp-download-ftp "ftp://ftp.isc.org/isc/dhcp/dhcp-&dhcp-version;.tar.gz">
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[275b1da] | 8 | <!ENTITY dhcp-md5sum "724bad21ad8b638abadd5fcc07df1a0f">
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| 9 | <!ENTITY dhcp-size "876 KB">
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| 10 | <!ENTITY dhcp-buildsize "21 MB">
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[d378ea3c] | 11 | <!ENTITY dhcp-time "0.1 SBU">
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[0931098] | 12 | ]>
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| 13 |
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[40330fcd] | 14 | <sect1 id="dhcp" xreflabel="DHCP-&dhcp-version;">
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[6ad98e12] | 15 | <?dbhtml filename="dhcp.html"?>
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| 16 |
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| 17 | <sect1info>
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| 18 | <othername>$LastChangedBy$</othername>
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| 19 | <date>$Date$</date>
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| 20 | </sect1info>
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| 21 |
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| 22 | <title>DHCP-&dhcp-version;</title>
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| 23 |
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| 24 | <indexterm zone="dhcp">
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| 25 | <primary sortas="a-dhcp">Dhcp</primary>
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| 26 | </indexterm>
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| 27 |
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| 28 | <sect2 role="package">
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| 29 | <title>Introduction to DHCP</title>
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| 30 |
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| 31 | <para>The <application>DHCP</application> package contains both the client
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| 32 | and server programs for DHCP. <command>dhclient</command> (the client) is
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| 33 | useful for connecting your computer to a network which uses DHCP to assign
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| 34 | network addresses. <command>dhcpd</command> (the server) is useful for
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| 35 | assigning network addresses on your private network.</para>
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| 36 |
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| 37 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 38 | <itemizedlist spacing="compact">
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| 39 | <listitem>
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| 40 | <para>Download (HTTP): <ulink url="&dhcp-download-http;"/></para>
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| 41 | </listitem>
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| 42 | <listitem>
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| 43 | <para>Download (FTP): <ulink url="&dhcp-download-ftp;"/></para>
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| 44 | </listitem>
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| 45 | <listitem>
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| 46 | <para>Download MD5 sum: &dhcp-md5sum;</para>
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| 47 | </listitem>
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| 48 | <listitem>
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| 49 | <para>Download size: &dhcp-size;</para>
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| 50 | </listitem>
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| 51 | <listitem>
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| 52 | <para>Estimated disk space required: &dhcp-buildsize;</para>
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| 53 | </listitem>
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| 54 | <listitem>
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| 55 | <para>Estimated build time: &dhcp-time;</para>
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| 56 | </listitem>
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| 57 | </itemizedlist>
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| 58 |
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[413bf97] | 59 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 60 | <itemizedlist spacing='compact'>
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[b89d0335] | 61 | <listitem>
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| 62 | <para>Required Patch:
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| 63 | <ulink url="&patch-root;/dhcp-&dhcp-version;-client_dns-1.patch"/></para>
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| 64 | </listitem>
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[413bf97] | 65 | <listitem>
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[d378ea3c] | 66 | <para>Optional Patch:
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[d77d8c5] | 67 | <ulink url="&patch-root;/dhcp-&dhcp-version;-iproute2-1.patch"/></para>
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[413bf97] | 68 | </listitem>
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| 69 | </itemizedlist>
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| 70 |
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[6ad98e12] | 71 | <bridgehead renderas="sect3">DHCP Dependencies</bridgehead>
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| 72 |
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| 73 | <bridgehead renderas="sect4">Required</bridgehead>
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[a6ac43b] | 74 | <para role="required"><xref linkend="net-tools"/> (you may omit
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[d378ea3c] | 75 | <application>net-tools</application> by using the optional patch
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| 76 | to utilize <application>iproute2</application>.</para>
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[6ad98e12] | 77 |
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[3cb0c57] | 78 | <para condition="html" role="usernotes">User Notes:
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| 79 | <ulink url="&blfs-wiki;/dhcp"/></para>
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| 80 |
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[6ad98e12] | 81 | </sect2>
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| 82 |
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| 83 | <sect2 role="kernel" id='dhcp-kernel'>
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| 84 | <title>Kernel Configuration</title>
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| 85 |
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[d378ea3c] | 86 | <para>You must have Packet Socket support (Device Drivers ⇒ Networking
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| 87 | Support ⇒ Networking Options ⇒ Packet Socket) compiled into
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[6ad98e12] | 88 | the kernel.</para>
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| 89 |
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| 90 | <indexterm zone="dhcp dhcp-kernel">
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| 91 | <primary sortas="d-dhcp">DHCP</primary>
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| 92 | </indexterm>
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| 93 |
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| 94 | </sect2>
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| 95 |
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| 96 | <sect2 role="installation">
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| 97 | <title>Installation of DHCP</title>
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| 98 |
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[b89d0335] | 99 | <para>First fix a problem with always regenerating
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| 100 | /etc/resolv.conf whether the DNS server has changed or not.</para>
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| 101 |
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| 102 | <screen><userinput>patch -Np1 -i ../dhcp-&dhcp-version;-client_dns-1.patch</userinput></screen>
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| 103 |
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[bccbdaea] | 104 | <para>If you chose not to install net-tools, apply the
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[61e058b] | 105 | iproute2 patch:</para>
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| 106 |
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[1e9bd536] | 107 | <screen><userinput>patch -Np1 -i ../dhcp-&dhcp-version;-iproute2-1.patch</userinput></screen>
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[61e058b] | 108 |
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[6ad98e12] | 109 | <para>Install <application>DHCP</application> by running
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| 110 | the following commands:</para>
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| 111 |
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[d378ea3c] | 112 | <screen><userinput>./configure &&
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[6ad98e12] | 113 | make</userinput></screen>
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| 114 |
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[410e228b] | 115 | <para>This package does not come with a test suite.</para>
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[275b1da] | 116 |
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[6ad98e12] | 117 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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[04a6794] | 118 |
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[6ad98e12] | 119 | <screen role="root"><userinput>make LIBDIR=/usr/lib INCDIR=/usr/include install</userinput></screen>
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[0931098] | 120 |
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[6ad98e12] | 121 | </sect2>
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[0931098] | 122 |
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[6ad98e12] | 123 | <sect2 role="commands">
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| 124 | <title>Command Explanations</title>
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[0931098] | 125 |
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[6ad98e12] | 126 | <para><parameter>LIBDIR=/usr/lib INCDIR=/usr/include</parameter>: This
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| 127 | command installs the library and include files in
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| 128 | <filename class="directory">/usr</filename> instead of
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| 129 | <filename class="directory">/usr/local</filename>.</para>
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[0931098] | 130 |
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[6ad98e12] | 131 | </sect2>
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[0931098] | 132 |
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[6ad98e12] | 133 | <sect2 role="configuration">
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| 134 | <title>Configuring DHCP</title>
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[0931098] | 135 |
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[6ad98e12] | 136 | <sect3 id='dhcp-config'>
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| 137 | <title>Config Files</title>
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[04a6794] | 138 |
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[6ad98e12] | 139 | <para><filename>/etc/dhclient.conf</filename> and
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| 140 | <filename>/etc/dhcpd.conf</filename></para>
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[04a6794] | 141 |
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[6ad98e12] | 142 | <indexterm zone="dhcp dhcp-config">
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| 143 | <primary sortas="e-etc-dhclient.conf">/etc/dhclient.conf</primary>
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| 144 | </indexterm>
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[04a6794] | 145 |
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[6ad98e12] | 146 | <indexterm zone="dhcp dhcp-config">
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| 147 | <primary sortas="e-etc-dhcpd.conf">/etc/dhcpd.conf</primary>
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| 148 | </indexterm>
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[0931098] | 149 |
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[6ad98e12] | 150 | </sect3>
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[0931098] | 151 |
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[6ad98e12] | 152 | <sect3 id='dhcp-init'>
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| 153 | <title>Configuration Information</title>
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[0931098] | 154 |
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[6ad98e12] | 155 | <para>Information on configuring the DHCP client can be
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[a324403] | 156 | found in <xref linkend="basicnet-connect"/>.</para>
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[0931098] | 157 |
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[6ad98e12] | 158 | <para>Note that you only need the DHCP server if you want to issue
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| 159 | LAN addresses over your network. The DHCP client doesn't need this
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| 160 | script to be used. Also note that this script is coded for the
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| 161 | <emphasis role="strong">eth1</emphasis> interface, which may need
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| 162 | to be modified for your hardware configuration.</para>
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[4774914f] | 163 |
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[6ad98e12] | 164 | <para>Install the <filename>/etc/rc.d/init.d/dhcp</filename>
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[5254d12] | 165 | init script included in the <xref linkend="bootscripts"/>
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[6ad98e12] | 166 | package.</para>
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[04a6794] | 167 |
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[6ad98e12] | 168 | <indexterm zone="dhcp dhcp-init">
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| 169 | <primary sortas="f-dhcp">dhcpd</primary>
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| 170 | </indexterm>
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[0931098] | 171 |
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[6ad98e12] | 172 | <screen role="root"><userinput>make install-dhcp</userinput></screen>
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[0931098] | 173 |
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[6ad98e12] | 174 | <para>The lease file must exist on startup. The following command will
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| 175 | satisfy that requirement:</para>
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[0931098] | 176 |
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[6ad98e12] | 177 | <screen role="root"><userinput>touch /var/state/dhcp/dhcpd.leases</userinput></screen>
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[0931098] | 178 |
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[6ad98e12] | 179 | <para>The following commands will create a base configuration file
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| 180 | for a DHCP server. There are several options that you may want to
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| 181 | add (information that is passed back to the DHCP client) and those
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| 182 | are covered in the man pages for <filename>dhcp.conf</filename>.</para>
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| 183 |
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| 184 | <screen role="root"><userinput>cat > /etc/dhcpd.conf << "EOF"
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| 185 | <literal>default-lease-time 72000;
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[0931098] | 186 | max-lease-time 144000;
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| 187 | ddns-update-style ad-hoc;
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| 188 |
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[3cb0c57] | 189 | subnet <replaceable><192.168.5.0></replaceable> netmask <replaceable><255.255.255.0></replaceable> {
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[d378ea3c] | 190 | range <replaceable><192.168.5.10> <192.168.5.240></replaceable>;
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[3cb0c57] | 191 | option broadcast-address <replaceable><192.168.5.255></replaceable>;
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| 192 | option routers <replaceable><192.168.5.1></replaceable>;
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[6ad98e12] | 193 | }</literal>
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| 194 | EOF</userinput></screen>
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| 195 |
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| 196 | <para>All addresses should be changed to meet your circumstance.</para>
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| 197 |
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| 198 | </sect3>
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| 199 |
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| 200 | </sect2>
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| 201 |
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| 202 | <sect2 role="content">
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| 203 | <title>Contents</title>
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| 204 |
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| 205 | <segmentedlist>
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| 206 | <segtitle>Installed Programs</segtitle>
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| 207 | <segtitle>Installed Libraries</segtitle>
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| 208 | <segtitle>Installed Directories</segtitle>
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| 209 |
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| 210 | <seglistitem>
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| 211 | <seg>dhcpd, dhcrelay, dhclient, dhclient-script, and omshell</seg>
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| 212 | <seg>bdhcpctl.a, libomapi.a</seg>
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| 213 | <seg>/var/state/dhcp, /usr/include/omapip, and /usr/include/isi-dhcp</seg>
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| 214 | </seglistitem>
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| 215 | </segmentedlist>
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| 216 |
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| 217 | <variablelist>
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| 218 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 219 | <?dbfo list-presentation="list"?>
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| 220 | <?dbhtml list-presentation="table"?>
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| 221 |
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| 222 | <varlistentry id="dhclient">
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| 223 | <term><command>dhclient</command></term>
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| 224 | <listitem>
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| 225 | <para>is the implementation of the DHCP client.</para>
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| 226 | <indexterm zone="dhcp dhclient">
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| 227 | <primary sortas="b-dhclient">dhclient</primary>
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| 228 | </indexterm>
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| 229 | </listitem>
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| 230 | </varlistentry>
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| 231 |
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| 232 | <varlistentry id="dhcpd">
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| 233 | <term><command>dhcpd</command></term>
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| 234 | <listitem>
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| 235 | <para>implements Dynamic Host Configuration Protocol (DHCP) and
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| 236 | Internet Bootstrap Protocol (BOOTP) requests for network
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| 237 | addresses.</para>
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| 238 | <indexterm zone="dhcp dhcpd">
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| 239 | <primary sortas="b-dhcpd">dhcpd</primary>
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| 240 | </indexterm>
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| 241 | </listitem>
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| 242 | </varlistentry>
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| 243 |
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| 244 | <varlistentry id="dhcrelay">
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| 245 | <term><command>dhcrelay</command></term>
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| 246 | <listitem>
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| 247 | <para>provides a means to accept DHCP and BOOTP requests on a subnet
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| 248 | without a DHCP server and relay them to a DHCP server on another
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| 249 | subnet.</para>
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| 250 | <indexterm zone="dhcp dhcrelay">
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| 251 | <primary sortas="b-dhcrelay">dhcrelay</primary>
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| 252 | </indexterm>
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| 253 | </listitem>
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| 254 | </varlistentry>
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| 255 |
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| 256 | <varlistentry id="omshell">
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| 257 | <term><command>omshell</command></term>
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| 258 | <listitem>
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| 259 | <para> provides an interactive way to connect to, query, and
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| 260 | possibly change, the ISC DHCP Server's state via OMAPI, the
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| 261 | Object Management API.</para>
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| 262 | <indexterm zone="dhcp omshell">
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| 263 | <primary sortas="b-omshell">omshell</primary>
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| 264 | </indexterm>
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| 265 | </listitem>
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| 266 | </varlistentry>
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| 267 |
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| 268 | </variablelist>
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| 269 |
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| 270 | </sect2>
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[04a6794] | 271 |
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[f45b1953] | 272 | </sect1>
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