Technical data

Configuring the DHCP Server
7.8 Supporting Utilities
10
Host name (without domain)
11
Domain name
The DHCPDBMOD command accepts a number of different flags and arguments.
Table 7–12 shows some of the more important flags.
Table 7–12 DHCPDBMOD Command Flags
Flag Description
-d Deletes the record.
-e Stores the record even if the lease has expired.
-l Stores the lease information only. Does not store name information.
-n Stores the name information only. Does not store lease information.
-w Overwrites the record if a record already exists.
By default, DHCPDBMOD stores both lease and name information for nonexpired and
new clients.
7.8.3 Using the DHCPDBREG Utility
Use the DHCPDBREG command to populate the database with the MAC address of
known MAC clients. Set the SERVER.PCY parameter Restrict to Known MAC
Address to True to use this utility. The
DHCPDBREG command can add or remove
hosts from the list of known MAC addresses. Use the following syntax when you
enter a record:
• Terminate each record to be loaded by a new line.
• Delimit the fields within each record with the vertical bar (|) character.
Each entry contains the following three fields:
• MAC address
• MAC address type
• MAC address length (octets)
The
DHCPDBREG command accepts a number of different flags. Two of the most
important flags are as follows:
Flags Description
-d Deletes the record.
-s Displays all registered MAC addresses.
7.9 Solving DHCP Server Problems
If the DHCP log file contains the message: ‘‘network not administered by server’’
and you use class A, B, or C IP addressing, check the NETMASKS. file to see that
you have entered the netmask correctly for the subnet.
Configuring the DHCP Server 7–65