Technical data

Configuring the DHCP Client
8.4 Configuring the DHCP Client
4. The next phase in the configuration process allows you to designate an
interface as the primary DHCP interface.
Primary DHCP Interface Configuration
DHCP Client configures system-wide parameters and
interface-specific parameters. Only one interface, the
DHCP "primary" interface, can receive system-wide
parameters.
Which interface? (SE0,NONE,HELP) [NONE]:SE0
5. At this point, TCPIP$CONFIG sets up the account for the DHCP client and
default directory and initial copies of the required configuration and data
files. For more information, see Section 8.4.2.
8.4.2 Configuring the Software
In order for the DHCP client to function, DHCP client software must be
configured. As with any TCP/IP service, configuration involves:
• Creation of a default directory and an account in which the software can run
• Creation of data files
TCPIP$CONFIG.COM provides a menu option under the client menu called
DHCP client. This option configures the DHCP client for you. You may choose
this option explicitly, but if you put an interface under DHCP control from the
Interfaces menu in TCPIP$CONFIG, this step is automatically done for you.
The DHCP client software configuration does the following:
• Creates the TCPIP$DHCP account, if it is not present.
• Creates the SYS$SYSDEVICE:[TCPIP$DHCP] directory, if it is not present.
• Enables the DHCP client service, if it is not present in the configuration
database.
Note that there is no service database entry for the DHCP client.
• Creates the initial versions of the following required configuration and data
files.
DHCPTAGS.
TCPIP$CONFIG extracts a copy of the DHCPTAGS. file from the
librarian file, TCPIP$TEMPLATES.TLB. This file generally does not
require modification. For a description of the DHCPTAGS. file, see
Section 8.2.2.4.
CLIENT.PCY
TCPIP$CONFIG extracts a copy of the CLIENT.PCY file
TCPIP$TEMPLATES.TLB. This file governs the behavior of the DHCP
client. Among other things, it tells the DHCP client which DHCP
configurable parameters to request from the DHCP server. The file, as
it comes from TCPIP$TEMPLATES.TLB, requests the most essential
parameters from the server, including:
Default route
Host name
DNS servers IP addresses
DNS domain name
See Section 8.2.2.1 for more information about this file.
8–14 Configuring the DHCP Client