23D-Link DSL-2750B Wireless N300 ADSL2+ Modem Router User Manual
Section 3 - Conguration
Enable DHCP 
Relay:
You can choose Disabled, Enabled or Relay. If set to DHCP 
server, the router can assign IP addresses, IP default gateway 
and DNS servers to the host.
Relay IP Address:
Enter the desired DHCP relay IP address.
Enable DHCP 
Server:
Enable or disable the DHCP server function.
DHCP IP Address 
Range:
Enter the range of IP addresses the DHCP server can issue from.
DHCP Lease 
Time:
The lease time determines the period that the host retains 
the assigned IP addresses before the IP addresses change. The 
default is 259200 seconds.
Enable DNS 
Relay:
If disabled the router will accept the first received DNS 
assignment from one of the PPPoA, PPPoE or MER enabled 
PVC(s) during the initial connection setup. If enabled you can 
enter the IP addresses for primary and secondary DNS servers.
Preferred DNS 
Server:
Enter an address for a preferred DNS server.
Alternate DNS 
Server:
Enter an address for an alternate DNS server.
DHCP Client 
Class List:
Client-class processing enables the DHCP server to assign the 
client an address from a matching scope.
DHCP 
Conditional 
Option:
Specify the conditions for DHCP class handling.
DHCP 
Reservations 
List:
Use this option to reserve specic IP addresses.
Number of 
Dynamic DHCP 
clients:
Dynamic DHCP clients will be listed here with supporting 
information.