Why Use Dhcp; Adsl Barricade Dhcp Modes - SMC Networks Barricade SMC7401BRA User Manual

Configuring Dynamic Host Configuration Protocol
The DHCP server draws from a defined pool of IP addresses
and leases them for a specified amount of time to your computers
when they request an Internet session. It monitors, collects, and
redistributes the addresses as needed.
On a DHCP-enabled network, the IP information is assigned
dynamically rather than statically. A DHCP client can be assigned
a different address from the pool each time it reconnects to the
network.

Why use DHCP?

DHCP allows you to manage and distribute IP addresses
throughout your network from a central computer. Without DHCP,
you would have to configure each computer separately with IP
addresses and related information. DHCP is commonly used with
large networks and those that are frequently expanded or
otherwise updated.

ADSL Barricade DHCP modes

The device can be configured as a DHCP server, relay agent
or client.
•
If you configure the device as a DHCP server, it will maintain
the pool of addresses and distribute them to your LAN
computers. If the pool of addresses includes private IP
addresses, you must also configure the Network Address
Translation service, so that the private addresses can be
translated to your public IP address on the Internet.
•
If your ISP performs the DCHP server function for your network,
then you can configure the device as a DHCP relay agent. When
the ADSL Barricade receives a request for Internet access from
a computer on your network, it contacts your ISP for the
necessary IP information, and then relays the assigned
information back to the computer.
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