VoIP/(802.11g) ADSL2+ (VPN) Firewall Router
Chapter 4: Configuration 40
DHCP Server
You can disable or enable the DHCP (Dynamic Host Configuration Protocol) server or enable the router’s
DHCP relay functions. The DHCP protocol allows your router to dynamically assign IP addresses to PCs
on your network if they are configured to obtain IP addresses automatically.
To disable the router’s DHCP Server, check Disabled and click Next, then click Apply. When the DHCP
Server is disabled you will need to manually assign a fixed IP address to each PCs on your network, and
set the default gateway for each PCs to the IP address of the router (by default this is
To configure the router’s DHCP Server, check DHCP Server and click Next. You can then configure
parameters of the DHCP Server including the IP pool (starting IP address and ending IP address to be
allocated to PCs on your network), lease time for each assigned IP address (the period of time the IP
address assigned will be valid), DNS IP address and the gateway IP address. These details are sent to
the DHCP client (i.e. your PC) when it requests an IP address from the DHCP server. Click Apply to
enable this function. If you check “Use Router as a DNS Server”, the ADSL Router will perform the
domain name lookup, find the IP address from the outside network automatically and forward it back to
the requesting PC in the LAN (your Local Area Network).
If you check DHCP Relay Agent and click Next, then you will have to enter the IP address of the DHCP
server which will assign an IP address back to the DHCP client in the LAN. Use this function only if
advised to do so by your network administrator or ISP.
Click Apply to enable this function.
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