# dhcpd.conf # # Configuration file for ISC dhcpd # # Hosts with more than one interface MUST specify a ``server-identifier'', # which should be the IP address of the server's primary network interface, # or if there is no interface that can be described that way, at least an # interface whose address isn't likely to change. server-identifier toccata.fugue.com; # option definitions common to all supported networks... option domain-name "fugue.com"; option domain-name-servers toccata.fugue.com; # Shared network declaration is used to group subnets which share the same # physical network together. The name is specified so that the shared # network can be referred to in log messages - it serves no other function. shared-network FUGUE { # option definitions common to this shared network. option subnet-mask 255.255.255.224; default-lease-time 600; max-lease-time 7200; # One of the two IP subnets that share this physical network # # Address ranges can be specified for each subnet attached to # a shared network. Since these subnets share the same physical # network, addresses are pooled together, and assignments are made # without regard to the actual subnet. If the optional dynamic-bootp # keyword is given in the address range declaration, then addresses # in that range can be assigned either with the DHCP protocol or the # BOOTP protocol; otherwise, only DHCP clients will have addresses # allocated from the address range. # # Note that each IP subnet can have its own options specific to that subnet. # options that aren't specified in the subnet are taken from the shared # network (if any) and then from the global option list. subnet 204.254.239.0 netmask 255.255.255.224 { range 204.254.239.10 204.254.239.20; option broadcast-address 204.254.239.31; option routers prelude.fugue.com; } # The other subnet that shares this physical network subnet 204.254.239.32 netmask 255.255.255.224 { range dynamic-bootp 204.254.239.10 204.254.239.20; option broadcast-address 204.254.239.31; option routers snarg.fugue.com; } } # IP subnets that are alone on their physical wire should be declared by # themselves. ISC dhcpd may still refer to them as shared networks in # log messages, but this is simply an artifact of the underlying data # structures. # # Note that options can be specified in the subnet declaration which # supersede the global options specified earlier. subnet 192.5.5.0 netmask 255.255.255.224 { range 192.5.5.26 192.5.5.30; option name-servers bb.home.vix.com, gw.home.vix.com; option domain-name "vix.com"; option routers 192.5.5.1; option subnet-mask 255.255.255.224; option broadcast-address 192.5.5.31; default-lease-time 600; max-lease-time 7200; } # Hosts which require special configuration options can be listed in # host statements. If no address is specified, the address will be # allocated dynamically (if possible), but the host-specific information # will still come from the host declaration. host passacaglia { hardware ethernet 0:0:c0:5d:bd:95; filename "vmunix.passacaglia"; server-name "toccata.fugue.com"; } # Fixed IP addresses can also be specified for hosts. These addresses # should not also be listed as being available for dynamic assignment. # Hosts for which fixed IP addresses have been specified can boot using # BOOTP or DHCP. Hosts for which no fixed address is specified can only # be booted with DHCP, unless there is an address range on the subnet # to which a BOOTP client is connected which has the dynamic-bootp flag # set. host fantasia { hardware ethernet 08:00:07:26:c0:a5; fixed-address fantasia.fugue.com; } # If a DHCP or BOOTP client is mobile and might be connected to a variety # of networks, more than one fixed address for that host can be specified. # Hosts can have fixed addresses on some networks, but receive dynamically # allocated address on other subnets; in order to support this, a host # declaration for that client must be given which does not have a fixed # address. If a client should get different parameters depending on # what subnet it boots on, host declarations for each such network should # be given. Finally, if a domain name is given for a host's fixed address # and that domain name evaluates to more than one address, the address # corresponding to the network to which the client is attached, if any, # will be assigned. host confusia { hardware ethernet 02:03:04:05:06:07; fixed-address confusia-1.fugue.com, confusia-2.fugue.com; filename "vmunix.confusia"; server-name "toccata.fugue.com"; } host confusia { hardware ethernet 02:03:04:05:06:07; fixed-address confusia-3.fugue.com; filename "vmunix.confusia"; server-name "snarg.fugue.com"; } host confusia { hardware ethernet 02:03:04:05:06:07; filename "vmunix.confusia"; server-name "bb.home.vix.com"; }