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