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2.5 Specifying network protocol options
DHCP
DHCP, or dynamic host configuration protocol (specified in RFC 2131), is
an extension to BOOTP that allows dynamic allocation of IP addresses .
Unlike BOOTP or RARP where cleints get the IP address once and for all,
DHCP assigns "leases" to the assigned IP addresses. The client is required to
renew its lease with the server in order to keep its address. If a lease expires,
the DHCP server reclaims the address and is free to assign it to another cli-
ent. Other than this, DHCP works that same way as BOOTP. They share the
same packet structure and options. DHCP can also work across segments by
using DHCP relay agent, whic is really just a BOOTP relay agent. DHCP is
widely used by Windows machines.
TCP/IP Setup
TCP/IP-ETHERNET
YES/ NO [NO]
Select
YES
if you have a TCP/IP network connected to the printer/copier
over Ethernet cabling.
For more information on setting up TCP/IP printing using Ethernet, see Chapter
4.
The following options are displayed only if TCP/IP-Ethernet is set to YES.
ETH. IP ADDRESS
[127.000.000.001]
Use the arrow buttons to assign the printer/copier an Ethernet IP address.
Press
Item/Enter
to accept your selection.
ETH. SUBNET MASK
[255.255.255.000]
This option lets you modify the subnet mask for printing with TCP/IP over
Ethernet. The subnet mask is set to
255.255.255.000
by default. If you set
the IP address and you need to set the subnet mask, enter one of the follow-
ing values:
•
255.000.000.000
if the IP address starts with a number less than 128
•
255.255.000.000
if the IP address starts with a number from 128 through
191
•
255.255.255.000
if the IP address starts with a number greater than 191
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