Technical data

Configuring the DHCP Server
7.2 DHCP Server Components
7.2.2.6 .DDNSKEYS
The .DDNSKEYS file describes each DNS domain and the DNS name server
that is to receive Host/IP address update information when DHCP distributes an
address to a DHCP client in the domain. The information in this file consists of
the domain to be updated and the IP address of the DNS server to which DHCP
sends the updates. A third field for secure dynamic updates is reserved for future
use. TCP/IP Services does not support secure dynamic updates.
This file is required for DHCP to perform DNS dynamic updates.
The following example shows the contents of a typical .DDNSKEYS file:
$ TYPE PINE$DKB0:[DHCP_CONFIG].DDNSKEYS
compaq.com 10.10.2.14
10.10.in-addr.arpa 10.10.2.14
7.2.3 Command Files
Table 7–4 describes the command files used by the DHCP server.
Table 7–4 DHCP Server Command Files
Command File Name Description
TCPIP$DHCP_SETUPCOMMANDS.COM Defines symbols to invoke DHCP utilities. It is located
in the SYS$MANAGER: directory.
TCPIP$DHCP_STARTUP.COM DCL commands to start the DHCP server.
TCPIP$DHCP_CLUSTER_STARTUP.COM DCL commands to start the DHCP server in a cluster
failover configuration.
TCPIP$DHCP_SHUTDOWN.COM DCL commands to stop the DHCP server.
TCPIP$DHCP_CLUSTER_SHUTDOWN.COM DCL commands to stop DHCP server in a cluster
failover configuration.
TCPIP$DHCP_RUN.COM Command procedure for starting DHCP server during
the startup of DHCP server.
TCPIP$DHCP_SYSTARTUP.COM Site-specific definitions and parameters to be invoked
when DHCP starts.
TCPIP$DHCP_SYSHUTDOWN.COM Site-specific definitions and parameters to be invoked
when DHCP is shut down.
7.2.4 Logical Names
By establishing logical names, you can modify the following server characteristics:
• The directory in which the DHCP configuration files and databases are placed
during TCPIP$CONFIG
• Error logging and diagnostics
Table 7–5 lists the DHCP logical names and describes their function.
Configuring the DHCP Server 7–15