[deployment-guide/comm-rel: 65/74] modified chapter DHCP
dsilas
dsilas at fedoraproject.org
Tue Jul 6 21:14:53 UTC 2010
commit 87d6fb20332917ac85b4939dc2b6b8c88d160137
Author: Martin Prpic <mprpic at redhat.com>
Date: Tue Jun 29 13:02:01 2010 +0200
modified chapter DHCP
en-US/Dynamic_Host_Configuration_Protocol_DHCP.xml | 26 ++++++++++++-------
1 files changed, 16 insertions(+), 10 deletions(-)
---
diff --git a/en-US/Dynamic_Host_Configuration_Protocol_DHCP.xml b/en-US/Dynamic_Host_Configuration_Protocol_DHCP.xml
index 334562c..5730104 100644
--- a/en-US/Dynamic_Host_Configuration_Protocol_DHCP.xml
+++ b/en-US/Dynamic_Host_Configuration_Protocol_DHCP.xml
@@ -402,7 +402,6 @@ DHCPDARGS="eth0";
</screen>
<para>The following is a basic <filename>/etc/dhcp/dhcpd.conf</filename> file, for a server that has two network interfaces, <filename>eth0</filename> in a 10.0.0.0/24 network, and <filename>eth1</filename> in a 172.16.0.0/24 network. Multiple <computeroutput>subnet</computeroutput> declarations allow different settings to be defined for multiple networks:</para>
<screen>
-ddns-update-style <replaceable>interim</replaceable>;
default-lease-time <replaceable>600</replaceable>;
max-lease-time <replaceable>7200</replaceable>;
subnet 10.0.0.0 netmask 255.255.255.0 {
@@ -419,7 +418,7 @@ subnet 172.16.0.0 netmask 255.255.255.0 {
<variablelist>
<varlistentry>
<term>
- <computeroutput>subnet <replaceable><ipv4_address></replaceable></computeroutput> <emphasis>or</emphasis> <computeroutput><replaceable><ipv6_address></replaceable> netmask <replaceable><ipv4_address></replaceable></computeroutput> <emphasis>or</emphasis> <computeroutput><replaceable><ipv6_address></replaceable>;</computeroutput>
+ <computeroutput>subnet <replaceable>10.0.0.0</replaceable> netmask <replaceable>255.255.255.0</replaceable>;</computeroutput>
</term>
<listitem>
<para>A <computeroutput>subnet</computeroutput> declaration is required for every network your DHCP server is serving. Multiple subnets require multiple <computeroutput>subnet</computeroutput> declarations. If the DHCP server does not have a network interface in a range of a <computeroutput>subnet</computeroutput> declaration, the DHCP server does not serve that network.</para>
@@ -438,7 +437,7 @@ dhcpd: Not configured to listen on any interfaces!
</varlistentry>
<varlistentry>
<term>
- <computeroutput>option subnet-mask <replaceable><ipv4_address></replaceable></computeroutput> <emphasis>or</emphasis> <computeroutput><replaceable><ipv6_address></replaceable>;</computeroutput>
+ <computeroutput>option subnet-mask <replaceable>255.255.255.0</replaceable>;</computeroutput>
</term>
<listitem>
<para>The <computeroutput>option subnet-mask</computeroutput> option defines a subnet mask, and overrides the <computeroutput>netmask</computeroutput> value in the <computeroutput>subnet</computeroutput> declaration. In simple cases, the subnet and netmask values are the same.</para>
@@ -446,7 +445,7 @@ dhcpd: Not configured to listen on any interfaces!
</varlistentry>
<varlistentry>
<term>
- <computeroutput>option routers <replaceable><ipv4_address></replaceable></computeroutput> <emphasis>or</emphasis> <computeroutput><replaceable><ipv6_address></replaceable>;</computeroutput>
+ <computeroutput>option routers <replaceable>10.0.0.1</replaceable>;</computeroutput>
</term>
<listitem>
<para>The <computeroutput>option routers</computeroutput> option defines the default gateway for the subnet. This is required for systems to reach internal networks on a different subnet, as well as external networks.</para>
@@ -454,7 +453,7 @@ dhcpd: Not configured to listen on any interfaces!
</varlistentry>
<varlistentry>
<term>
- <computeroutput>range <replaceable><ipv4_address></replaceable></computeroutput> <emphasis>or</emphasis> <computeroutput><replaceable><ipv6_address></replaceable>;</computeroutput>
+ <computeroutput>range <replaceable>10.0.0.5</replaceable> <replaceable>10.0.0.15</replaceable>;</computeroutput>
</term>
<listitem>
<para>The <computeroutput>range</computeroutput> option specifies the pool of available IP addresses. Systems are assigned an address from the range of specified IP addresses.</para>
@@ -480,7 +479,6 @@ dhcpd: Not configured to listen on any interfaces!
<para>The following <filename>/etc/dhcp/dhcpd.conf</filename> example creates two subnets, and configures an IP address for the same system, depending on which network it connects to:</para>
</formalpara>
<screen>
-ddns-update-style <replaceable>interim</replaceable>;
default-lease-time <replaceable>600</replaceable>;
max-lease-time <replaceable>7200</replaceable>;
subnet 10.0.0.0 netmask 255.255.255.0 {
@@ -515,7 +513,7 @@ host example1 {
</varlistentry>
<varlistentry>
<term>
- <computeroutput>hardware ethernet <replaceable><mac_address></replaceable>;</computeroutput>
+ <computeroutput>hardware ethernet <replaceable>00:1A:6B:6A:2E:0B</replaceable>;</computeroutput>
</term>
<listitem>
<para>The <computeroutput>hardware ethernet</computeroutput> option identifies the system. To find this address, run the <command>ip link</command> command.</para>
@@ -523,7 +521,7 @@ host example1 {
</varlistentry>
<varlistentry>
<term>
- <computeroutput>fixed-address <replaceable><ipv4_address></replaceable></computeroutput> <emphasis>or</emphasis> <computeroutput><replaceable><ipv6_address></replaceable>;</computeroutput>
+ <computeroutput>fixed-address <replaceable>10.0.0.20</replaceable>;</computeroutput>
</term>
<listitem>
<para>The <computeroutput>fixed-address</computeroutput> option assigns a valid IP address to the system specified by the <computeroutput>hardware ethernet</computeroutput> option. This address must be outside the IP address pool specified with the <computeroutput>range</computeroutput> option.</para>
@@ -576,8 +574,16 @@ dhcpd: Configuration file errors encountered -- exiting
</section>
<section id="s1-dhcp_for_ipv6_dhcpv6">
<title>DHCP for IPv6 (DHCPv6)</title>
+ <indexterm>
+ <primary>DHCP</primary>
+ <secondary>DHCPv6</secondary>
+ </indexterm>
+ <indexterm>
+ <primary>DHCP</primary>
+ <secondary>dhcpd6.conf</secondary>
+ </indexterm>
<para>
- The ISC DHCP includes support for IPv6 (DHCPv6) since the 4.x release with a DHCPv6 server, client and relay agent functionality. The server, client and relay agents support both IPv4 and IPv6. However, the client and server agents can only operate one protocol at a time — for dual support they must be started separately for IPv4 and IPv6.
+ The ISC DHCP includes support for IPv6 (DHCPv6) since the 4.x release with a DHCPv6 server, client and relay agent functionality. The server, client and relay agents support both IPv4 and IPv6. However, the client and the server can only manage one protocol at a time — for dual support they must be started separately for IPv4 and IPv6.
</para>
<para>
The DHCPv6 server configuration file can be found at <filename>/etc/dhcp/dhcpd6.conf</filename>.
@@ -622,7 +628,7 @@ subnet6 2001:db8:0:1::/64 {
</listitem>
<listitem>
<para>
- <filename>dhcpd.leases</filename> man page — Explains how to configure the DHCP leases file; includes some examples.</para>
+ <filename>dhcpd.leases</filename> man page — Describes a persistent database of leases.</para>
</listitem>
<listitem>
<para>
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