Technical data

Configuring the DHCP Server
7.2 DHCP Server Components
Table 7–2 DHCP Executable Files
Program Name Description
BPASCIITODBMOD.EXE Used in rollover of old-style UCX BOOTP entries to
DHCP.
BPISAMTOASCII.EXE Used in rollover of old-style UCX BOOTP entries to
DHCP.
DBDUMP.EXE Dumps lease database in single line ASCII format.
See Section 7.8.1.
DBMODIFY.EXE Modifies lease database. See Section 7.8.2.
DBREGISTER.EXE Registers known MAC addresses. See Section 7.8.3.
DBSHOW.EXE Displays specified binary database. See Section 7.8.1.
GUI.EXE DHCP GUI. Used to manage DHCP server.
SERVER.EXE DHCP server.
SHOWDBS.EXE Displays lease database in easy to read format. See
Section 7.8.1.
SIGNAL.EXE Implements UNIX style
kill to allow sending signals
to DHCP server. See Section 7.4.3.
7.2.2 Configuration Files
DHCP uses the configuration files described in Table 7–3 to control the behavior
of the DHCP server and its service to DHCP clients.
Table 7–3 DHCP Configuration Files
File Name Description
SERVER.PCY Describes the behavior of the server. For example, the policy file tells you
whether BOOTP clients should be supported, the ping timeout value, and
so on.
You may need to make modifications to this file to change the default
settings. Some of the defaults include support for BOOTP clients and
assigning names by IP addresses.
DHCPCAP. Defines the client configuration parameters.
This file is similar to the standard BOOTPTAB file used by most BOOTP
servers. Each entry in the file can describe a single host, all the hosts
within a subnet, or a group of hosts.
NETS. Defines the pool of IP addresses available to the DHCP server to assign to
clients. Used for dynamic address assignments.
NETMASKS. Defines network masks if the network is subnetted. If you use subnetting
on your network, you must enter the subnet mask into the NETMASKS.
file for your network to operate correctly. This is an optional file. If your
network uses standard class A, B, or C network addressing, you do not
need to enter a mask into this file.
NAMEPOOL. Defines the names available for assignment to DHCP clients. The server
uses the names only as a last resort (for example, when the client did
not suggest a name and there is no name associated with the IP address
offered to the client).
.DDNSKEYS Defines the domains that are to be sent DNS/BIND dynamic updates. The
name of this file consists only of a file type of DDNSKEYS.
Configuring the DHCP Server 7–5