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Setting IP parameters:
DHCP
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DHCP (Dynamic Host Configuration Protocol) is a system in which Windows NT servers can allocate IP addresses dynamically. Under DHCP, the server gives the printer (called a DHCP client) its IP address when the printer is reset.
Installing the DHCP server
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In
Control Panel:Network, select
Add Software.
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Select
TCP/IP components.
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In the second window that is displayed, select
DHCP server.
Setting up a DHCP server
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Go to the
Network Administration
Common Program Group and select
DHCP Server.
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Configure DHCP with a
scope; a scope is a range of IP addresses available to be allocated to DHCP clients. For example, the scope could be the IP addresses 192.2.194.101 through 192.2.194.254.
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Defining a scope in Windows NT 4.x
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Click
Start,
Programs,
Administrative Tools,
DHCP Manager.
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Double-click
Local Machine.
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Click
Scope,
Create.
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Enter the IP information to define the scope.
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Defining a scope in Windows NT 3.5.x
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Open the
Network Administration
group.
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Double-click
DHCP Manager.
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Double-click
Local Machine.
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Click
Scope,
Create.
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Enter the IP information to define the scope.
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Define the
lease. A lease is a pre-determined time that the printer holds the IP address. When the lease time expires, the printer queries the DHCP server again for another IP address. It is recommended that you set the lease to
Unlimited.
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Define a name for the scope. You are prompted to activate the newly created scope. Answer
Yes.
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Restart the DHCP server:
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In
Control Panel:Services, scroll down to
DHCP Server.
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Click
Stop; then click
Start.
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Click
Close.
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Turn on the printer. The printer receives its IP address from the server. Print a Configuration Page to obtain the IP address (see
The printer's Configuration Page
).
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Set up
Print Manager
to point to the printer's IP address. See
Windows NT
for more information.
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Configure the printer's DHCP client software.
DHCP transactions
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On power up or reset, the printer sends a
DHCP discover packet, indicating its Ethernet address and requesting an IP address.
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The DHCP server responds to the discover packet with a
DHCP offer packet, which contains an IP address from within the assigned scope and the assigned lease.
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The printer examines the DHCP offer packet and decides whether to accept the lease. The printer sends a
request packet, accepting the IP address and the lease.
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NOTE
There can be multiple DHCP servers on the same network, each defining its own scopes and leases. The printer selects the offer with the longest lease.
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The DHCP server sends an
acknowledgment packet
to the printer, completing the transaction.
Return to Topic List
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