Advanced configuration, Network setup – Linksys WRT120N User Manual
Wireless-N Home Router
Host Name and Domain Name
These fields allow you to
supply a host and domain name for the Router. Some ISPs,
usually cable ISPs, require these names as identification.
You may have to check with your ISP to see if your
broadband Internet service has been configured with a
host and domain name. In most cases, leaving these fields
blank will work.
MTU is the Maximum Transmission Unit. It specifies
the largest packet size permitted for Internet transmission.
Select Manual if you want to manually enter the largest
packet size that is transmitted. To have the Router select
the best MTU for your Internet connection, keep the
When Manual is selected in the MTU field, this option
is enabled. Leave this value in the 1200 to 1500 range. The
default size depends on the Internet Connection Type:
DHCP, Static IP, or Telstra: 1500
PPTP or L2TP: 1460
The Network Setup section changes the settings of the
local network. Wireless setup is performed through the
This presents both the Router’s Local IP Address and
Subnet Mask as seen by your network.
DHCP Server Setting
The settings allow you to configure the Router’s Dynamic
Host Configuration Protocol (DHCP) server function. The
Router can be used as a DHCP server for your network. A
DHCP server automatically assigns an IP address to each
computer on your network. If you choose to enable the
Router’s DHCP server option, make sure there is no other
DHCP server on your network.
DHCP Server Setting
DHCP is enabled by factory default. If you
already have a DHCP server on your network, or you do
not want a DHCP server, then select Disabled (no other
DHCP features will be available).
Click this button if you want to assign
a fixed local IP address to a MAC address.
You will see a list of DHCP clients with the following
information: Client Name, Interface, IP Address, and
Select Clients from DHCP Table
Click the Select
check box to reserve a client’s IP address. Then click
Manually Adding Client
To manually assign an IP
address, enter the client’s name in the Enter Client
Name field. Enter the IP address you want it to have in
the Assign IP Address field. Enter its MAC address in the
To This MAC Address field. Then click Add.
Clients Already Reserved
A list of DHCP clients and their fixed local IP addresses
will be displayed at the bottom of the screen. If you
want to remove a client from this list, click Remove.
Click Save Settings to apply your changes, or click
Cancel Changes to clear your changes. To update the
on-screen information, click Refresh. To exit this screen
and return to the Basic Setup screen, click Close.
Start IP Address
Enter a value for the DHCP server to
start with when issuing IP addresses. Because the Router’s
default IP address is 192.168.1.1, the Start IP Address must
be 192.168.1.2 or greater, but smaller than 192.168.1.253.
The default is 192.168.1.100.
Maximum Number of Users
Enter the maximum number
of computers that you want the DHCP server to assign IP