3Com VCX V7000 Installation Manual page 407

When you have excluded all of the IP addresses that you want, click
Next.
3 Accept the default lease duration (8 hours) by clicking Next.
3Com recommends that all leases for branch office devices be unlimited.
To configure an unlimited lease duration you must first configure a finite
duration and then edit the scope properties to change the duration to
unlimited. See "Configuring Unlimited Leases"
description of how to configure an unlimited lease duration.
4 The wizard asks you whether you want to configure DHCP options.
Enable the No, I will configure these options later radio button and click
Next.
5 Click Finish.
6 Repeat steps 1 through 5 for as many branch offices as you want to
configure.
Configuring Unlimited Leases
After a DHCP scope has been created, follow these instructions to modify
the lease duration to make leases unlimited.
1 Click Start > Manage Your Server.
2 The Manage Your Server window appears. In the DHCP Server area of the
window, click Manage this DHCP server.
3 In the DHCP window that appears, expand the view in the left pane by
clicking the plus sign (+) to the left of the name of your Windows 2003
server.
4 Select the scope that you want, right click it, and in the menu that
appears, click Properties.
5 In the Scope Properties window that appears, on the General tab, click
the Unlimited radio button in the lower portion of the window and then
click OK.
Configuring DHCP Options for Each Scope
For each scope that you create, follow the procedures in this section to
configure DHCP options 3, 120, and 184 at the individual scope level. If
you want to configure these options at a different level because of your
network design, you must modify the examples.
Windows 2003 Server
later in this section for a
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