Technical data

Configuring the DHCP Server
7.4 Configuring the DHCP Server
4. Create a .DDNSKEYS file with an entries for the DNS/BIND server that is to
receive dynamic updates. You will most likely want to create an entry for A
and PTR records by defining a forward and reverse translation entry.
5. Create a NAMEPOOL. file to supply a pool of names to use for nodes on the
particular network. DHCP uses this pool of names to generate a host name
only when other methods are unsuccessful.
7.4.2.2 Statically Assigning Host Names
To configure DHCP to use host names defined in a DNS/BIND server database,
perform the following steps:
• Change the SERVER.PCY file (either manually or with the DHCP GUI) to
include the following statement:
assign_name_by_ipaddr
Exclude the following statements:
accept_client_name
dns_tracks_dhcp_lease
name_service_updateable
See Section 7.2.2.1.
• Edit the DNS/BIND forward translation (domain_name.DB) file to include
an A record for each IP address in the range of IP addresses that your
DHCP server may allocate. It is common practice to assign IP addresses
and names systematically. For example, if IP address 10.10.2.100 obtains
the name dhcp1.xyz.com , then IP address 10.10.2.101 obtains the name
dhcp2.xyz.com (see Section 5.4.4.3).
• Edit the DNS/BIND reverse translation (address.DB) file to include a PTR
record for each host name (see Section 5.4.4.4).
7.4.3 Signaling the DHCP Server
One of the DHCP utilities that is defined in TCPIP$DHCP_
SETUPCOMMANDS.COM is the TCPIP$DHCP_SIGNAL utility, which provides
interprocess signaling in a manner similar to the UNIX kill signal delivery
utility. PRMMBX and SYSNAM privileges are required to run TCPIP$DHCP_
SIGNAL.EXE.
The following table shows the commands available with the TCPIP$DHCP_
SIGNAL utility:
Command Description
DHCPSIGHUP Causes the ASCII configuration files to be read again, flushes the
binary databases and then translates the TCPIP$DHCP_DEBUG and
TCPIP$DHCP_LOG_LEVEL logical names.
DHCPSIGTERM Causes an orderly shutdown of DHCP.
DHCPSIGUSR1 Causes a dump of the ASCII configuration files, then flushes the binary
databases.
7–20 Configuring the DHCP Server