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

subnet 10.5.5.0 netmask 255.255.255.224 {
  range 10.5.5.26 10.5.5.30;
  option domain-name-servers ns1.internal.example.org;
  option domain-name "internal.example.org";
  option routers 10.5.5.1;
  option broadcast-address 10.5.5.31;
  default-lease-time 600;
  max-lease-time 7200;
}

host fantasia {
  hardware ethernet 08:00:07:26:c0:a5;
  fixed-address fantasia.fugue.com;
}