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High Performance Wireless-N Router
Linksys E3000 Chapter 3: Advanced Configuration
Size  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
 • PPPoE: 1492
 • PPTP or L2TP: 1460
Network Setup
The Network Setup section  configures the  IP settings  for 
your local network.
Router Address
This  presents  both  the  Router’s  IP  Address  and  Subnet 
Mask, as seen by your network. 
Router IP Address
IP Address  This is the IP address of the router and is used 
as the base for all of your local network settings.
Subnet  Mask  This  is  the  subnet  mask  address  for  your 
router. It offers a selection of addresses from a drop-down 
menu. Most users will not need to change this setting.
DHCP Server Settings
The  settings  allow  you  to  configure  the  Router’s  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 or device 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.   
NOTE: If you choose to enable the DHCP server 
option, make sure there is no other DHCP server 
on your network. 
 
Network Address Server Settings (DHCP)
DHCP Server  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).
DHCP  Reservation  Click  this  button  if  you  want  to 
assign a fixed local IP address to a specific device on your 
network. This is helpful if you have a device you need to 
access at the same address all the time such as a media 
server or  print server. You  can reserve the IP address for 
the specific device by selecting it from the list of devices 
or by manually entering the MAC address of the device. 
DHCP Reservation
You  will see  a list of  DHCP clients with  the following 
information:  Client  Name,  Interface,  IP  Address,  and 
MAC Address. 
DHCP Reservation
 • Select  Clients  from  DHCP  Table  Click  the  Select 
check  box  to  reserve  a  client’s  IP  address. Then  click 
Add  Clients.  Enter  a  Client  Name  and  click  Save 
Settings.
 • Manually  Add  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 and click 
Save Settings.
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, click Close.
Start  IP  Address  The  Start  IP  Address  specifies  the 
starting  IP  address  for  the  range  of  addresses  assigned 
by your Router when it functions as a DHCP server. (The 
first IP address assigned by  the Router will be  randomly 
selected within the range you specify.)
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 192.168.1.254. The default Start IP Address is 
192.168.1.100.