Information Technology Reference
In-Depth Information
2.
Enter the IP address and MAC address or ID for the reservation.
To find the MAC address of the local computer, use the
ipconfig
command. To find the MAC address of a remote machine, use the
nbtstat-acomputername
command.
3.
If you want, you can also enter a name and description.
4.
For IPv4, in the Supported Types section, choose whether the reservation will be made
by DHCP only, BOOTP only (useful for remote-access devices), or both.
Removing a Reservation
To remove a reservation, right-click it and select Delete. This removes the reservation but
does nothing to the client device.
There's no way to change a reservation once it has been created. If you
want to change any of the associated settings, you'll have to delete and
re-create the reservation.
Setting Scope Options for IPv4
Once you've installed a server, authorized it in Active Directory, and fixed up the address
pool, the next step is to set scope options that you want sent out to clients, such as router
(that is, default gateway) and DNS server addresses. You must configure the options you
want sent out before you activate a scope. If you don't, clients may register in the scope
without getting any options, rendering them virtually useless. Thus, configure the scope
options, along with the IP address and subnet mask that you configured earlier in this
chapter.
In the following sections, you will learn how to configure and assign scope options on
the DHCP server.
Understanding Option Assignment
You can control which DHCP options are doled out to clients in five (slightly overlapping)
ways:
Predefined Options
Predefined options
are templates that are available in the Server,
Scope, or Client Options dialog box.
Server Options
Server options
are assigned to all scopes and clients of a particular server.
That means if there's some setting you want all clients of a DHCP server to have, no matter
what scope they're in, this is where you assign it. Specific options (those that are set at the
class, scope, or client level) will override server-level options. That gives you an escape
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