SMC Networks ADSL Barricade SMC7204BRA - Manual (Page 48)

Configuring DHCP Server
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If you have another PC or device on your network that is already
performing the DHCP server function, then you can configure
the device's LAN port to be a DHCP client of that server (as are
your PCs). This configuration is described in Configuring the
LAN Ports.
Note: You can input settings for both DHCP server and
DHCP relay mode, and then activate either mode
at any time. Deactivated settings are retained for
your future use.
Configuring DHCP Server
Note: Before you begin, be sure to configure your PCs to
accept DHCP information assigned by a DHCP server.
For detailed instructions, see Quick Start, Configuring
Your Computers on page 9.
To set up DHCP server, you first define the ranges of IP addresses
that you want to be distributed to your PCs, called DHCP server
address pools.
Guidelines for creating DHCP server address pools
IP address pools can contain multiple public addresses that
you have purchased from your ISP, but are typically private
addresses that you create. LAN administrators often create
private IP addresses for use only on their networks. See
Overview of NAT on page 57 for an explanation of private IP
addresses.