User`s manual

Additional Printing & Configuration Options 8-3
8.2 Dynamic Host Configuration Protocol (DHCP)
Important: EcoLAN 3000E IP address assignment with DHCP will not work if the
3000E has an existing IP address and IP persistence is Permanent.
DHCP provides a mechanism for delivering IP configuration parameters, including IP
address, subnet mask, default gateway, host name, WINS server addresses, etc. to
devices (hosts) on an IP network. DHCP alleviates the administrative burden of
managing individual IP addresses.
A DHCP server processes 3000E DHCP Discovery broadcasts and returns an IP
address to the 3000E. The DHCP server may be set up to grant an IP address for a
limited time (a temporary lease) or for an unlimited time (an unlimited lease), or it
may be configured with a permanent address reservation for each 3000E.
In a WINS environment, the DHCP server will generally be set up to grant the 3000E
a temporary lease.
Important: In a non-WINS environment, it is highly recommended to set up the DHCP
server to grant the 3000E an unlimited lease or permanent address reserva-
tion.
8.2.1 Unlimited Lease or Address Reservation in Windows NT 4.0
(non-WINS DHCP setup)
In Windows NT, lease duration is set for a particular scope, or group of addresses.
Thus, lease duration should be set to Unlimited for the scope to which the 3000E
belongs. If this is not desired, then the 3000E should be defined as a Reserved Client.
A Reserved Client may be added with the Windows NT DHCP Manager by selecting
Scope and then Add Reservations. Enter the hardware address of the 3000E (see the
3000E Network Status Page) and the IP address and other IP parameters.
Cover-Preface.book Page 3 Wednesday, May 12, 1999 10:48 PM