xref: /OK3568_Linux_fs/buildroot/package/dhcp/dhcpd.conf (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun#
2*4882a593Smuzhiyun# Sample configuration file for ISC dhcpd for Debian
3*4882a593Smuzhiyun#
4*4882a593Smuzhiyun# $Id: dhcpd.conf,v 1.1.1.1 2002/05/21 00:07:44 peloy Exp $
5*4882a593Smuzhiyun#
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun# The ddns-updates-style parameter controls whether or not the server will
8*4882a593Smuzhiyun# attempt to do a DNS update when a lease is confirmed. We default to the
9*4882a593Smuzhiyun# behavior of the version 2 packages ('none', since DHCP v2 didn't
10*4882a593Smuzhiyun# have support for DDNS.)
11*4882a593Smuzhiyunddns-update-style none;
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun# option definitions common to all supported networks...
14*4882a593Smuzhiyunoption domain-name "example.org";
15*4882a593Smuzhiyunoption domain-name-servers ns1.example.org, ns2.example.org;
16*4882a593Smuzhiyun
17*4882a593Smuzhiyundefault-lease-time 600;
18*4882a593Smuzhiyunmax-lease-time 7200;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun# If this DHCP server is the official DHCP server for the local
21*4882a593Smuzhiyun# network, the authoritative directive should be uncommented.
22*4882a593Smuzhiyun#authoritative;
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun# Use this to send dhcp log messages to a different log file (you also
25*4882a593Smuzhiyun# have to hack syslog.conf to complete the redirection).
26*4882a593Smuzhiyunlog-facility local7;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun# No service will be given on this subnet, but declaring it helps the
29*4882a593Smuzhiyun# DHCP server to understand the network topology.
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun#subnet 10.152.187.0 netmask 255.255.255.0 {
32*4882a593Smuzhiyun#}
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun# This is a very basic subnet declaration.
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun#subnet 10.254.239.0 netmask 255.255.255.224 {
37*4882a593Smuzhiyun#  range 10.254.239.10 10.254.239.20;
38*4882a593Smuzhiyun#  option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;
39*4882a593Smuzhiyun#}
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun# This declaration allows BOOTP clients to get dynamic addresses,
42*4882a593Smuzhiyun# which we don't really recommend.
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun#subnet 10.254.239.32 netmask 255.255.255.224 {
45*4882a593Smuzhiyun#  range dynamic-bootp 10.254.239.40 10.254.239.60;
46*4882a593Smuzhiyun#  option broadcast-address 10.254.239.31;
47*4882a593Smuzhiyun#  option routers rtr-239-32-1.example.org;
48*4882a593Smuzhiyun#}
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun# A slightly different configuration for an internal subnet.
51*4882a593Smuzhiyun#subnet 10.5.5.0 netmask 255.255.255.224 {
52*4882a593Smuzhiyun#  range 10.5.5.26 10.5.5.30;
53*4882a593Smuzhiyun#  option domain-name-servers ns1.internal.example.org;
54*4882a593Smuzhiyun#  option domain-name "internal.example.org";
55*4882a593Smuzhiyun#  option routers 10.5.5.1;
56*4882a593Smuzhiyun#  option broadcast-address 10.5.5.31;
57*4882a593Smuzhiyun#  default-lease-time 600;
58*4882a593Smuzhiyun#  max-lease-time 7200;
59*4882a593Smuzhiyun#}
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun# Hosts which require special configuration options can be listed in
62*4882a593Smuzhiyun# host statements.   If no address is specified, the address will be
63*4882a593Smuzhiyun# allocated dynamically (if possible), but the host-specific information
64*4882a593Smuzhiyun# will still come from the host declaration.
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun#host passacaglia {
67*4882a593Smuzhiyun#  hardware ethernet 0:0:c0:5d:bd:95;
68*4882a593Smuzhiyun#  filename "vmunix.passacaglia";
69*4882a593Smuzhiyun#  server-name "toccata.fugue.com";
70*4882a593Smuzhiyun#}
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun# Fixed IP addresses can also be specified for hosts.   These addresses
73*4882a593Smuzhiyun# should not also be listed as being available for dynamic assignment.
74*4882a593Smuzhiyun# Hosts for which fixed IP addresses have been specified can boot using
75*4882a593Smuzhiyun# BOOTP or DHCP.   Hosts for which no fixed address is specified can only
76*4882a593Smuzhiyun# be booted with DHCP, unless there is an address range on the subnet
77*4882a593Smuzhiyun# to which a BOOTP client is connected which has the dynamic-bootp flag
78*4882a593Smuzhiyun# set.
79*4882a593Smuzhiyun#host fantasia {
80*4882a593Smuzhiyun#  hardware ethernet 08:00:07:26:c0:a5;
81*4882a593Smuzhiyun#  fixed-address fantasia.fugue.com;
82*4882a593Smuzhiyun#}
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun# You can declare a class of clients and then do address allocation
85*4882a593Smuzhiyun# based on that.   The example below shows a case where all clients
86*4882a593Smuzhiyun# in a certain class get addresses on the 10.17.224/24 subnet, and all
87*4882a593Smuzhiyun# other clients get addresses on the 10.0.29/24 subnet.
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun#class "foo" {
90*4882a593Smuzhiyun#  match if substring (option vendor-class-identifier, 0, 4) = "SUNW";
91*4882a593Smuzhiyun#}
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun#shared-network 224-29 {
94*4882a593Smuzhiyun#  subnet 10.17.224.0 netmask 255.255.255.0 {
95*4882a593Smuzhiyun#    option routers rtr-224.example.org;
96*4882a593Smuzhiyun#  }
97*4882a593Smuzhiyun#  subnet 10.0.29.0 netmask 255.255.255.0 {
98*4882a593Smuzhiyun#    option routers rtr-29.example.org;
99*4882a593Smuzhiyun#  }
100*4882a593Smuzhiyun#  pool {
101*4882a593Smuzhiyun#    allow members of "foo";
102*4882a593Smuzhiyun#    range 10.17.224.10 10.17.224.250;
103*4882a593Smuzhiyun#  }
104*4882a593Smuzhiyun#  pool {
105*4882a593Smuzhiyun#    deny members of "foo";
106*4882a593Smuzhiyun#    range 10.0.29.10 10.0.29.230;
107*4882a593Smuzhiyun#  }
108*4882a593Smuzhiyun#}
109