server/dhcpd.conf.example

   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.example.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.example.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 }