Installing and Administering Internet Services

268 Chapter6

Dynamic Host Conﬁguration Protocol (DHCP)

Conﬁguring DHCP

For example: 15.1.48.50 - 15.1.48.80

The DHCP server will assign IP addresses to clients from this set of

IP addresses.

2. Pre-assign and register hostnames to the IP address allocated above.

Using the -h option to the dhcptools(1M) command may be useful.

For example:

dhcptools -h fip=15.1.48.50 no=30 sm=255.255.255.0

hn=devlab##

This command will create a ﬁle in /tmp/dhcphosts that can be

incorporated into your /etc/hosts or DNS/NIS database.

3. Designate a system that is always available to its clients.

Conﬁguring a DHCP Server to Distribute IP

Addresses to Groups of Devices

Start SAM.

4. Double-click the Networking and Communication icon.

5. Double-click the Bootable Devices icon.

6. Double-click the “DHCP Device Groups Booting from this Server”

icon.

7. Add the new group of IP addresses that you allocated in the

“Preparing to Conﬁgure a DHCP Server” on page 267.

8. Click the Action menu item, then choose Add DHCP Group.

9. Complete the following ﬁelds on the screen:

Group Name: This can be any name that is not already deﬁned as

a DHCP group.

Subnet Address: This is the portion of an IP address that is not

masked off by the subnet mask. You can enter the

IP address in the range you selected along with the

correct subnet mask and SAM will calculate the

portion that is not masked off for you.

Subnet Mask: The subnet mask depends on the “class” of your

network. It determines how an IP address is

separated into a network number and a host speciﬁc