Chapter 8 Configuration of network services
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Figure8.11 DHCPserver — reserving an IP address
•hardware(MAC) address of the host — it is defined by hexadecimal numbers separated
by colons, i.e.
00:bc:a5:f2:1e:50
or by dashes— for example:
00-bc-a5-f2-1e-50
The MAC address of a network adapter can be detected with operating system tools
(i.e. with the ipconfig command) or with a special application provided by the net-
work adapter manufacturer.
•hostname — DHCP requests of most DHCP clients include host names (i.e. allWindows
operating systems), or the client can be set to send a host name (e.g. the Linux operat-
ing system).
Click Advanced to set DHCP parameters which will accompany the address when leased. If the
IP address is already included to a scope, DHCP parameters belonging to the scope are used
automatically. In the Lease Reservation dialog window, additional parameters can be specified
or/and new values can be entered for parameters yet existing.
Note: Another way to reserve an IP address is to go to the Leases tab, find the IP address leased
dynamically to the host and reserve it (for details, see below).
Leases
IP scopes can be viewed in the Leases tab. These scopes are displayed in the form of trees. All
current leases within the appropriate subnet are displayed in these trees.
Note: Icon color represents address status (see below). Icons marked with Rrepresent reserved
addresses.
Columns in this section contain the following information:
•Leased Address — leased IP address
•Lease Expiration — date and time specifying expiration of the appropriate lease