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High Performance Wireless-N Router
Linksys E3000 Chapter 3: Advanced Configuration
Automatic Configuration - DHCP
The default Internet Connection Type is set to Automatic 
Configuration - DHCP. Keep the default only if your ISP 
supports DHCP (Dynamic Host Configuration Protocol) or 
if you connect using  a dynamic  IP Address. (This option 
usually applies to cable connections.)
Internet Connection Type > Automatic Configuration - DHCP
Static IP
If  you  are  required  to  use  a  permanent  IP  address  to 
connect to the Internet, select Static IP.
Internet Connection Type > Static IP
IP  Address  This  is  the  Router’s  IP  address,  when  seen 
from  the  Internet. Your  ISP  will  provide  you  with  the  IP 
address you need to enter here.
Subnet Mask  This is  the Router’s  Subnet Mask, as  seen 
by users on the Internet (including your ISP). Your ISP will 
provide you with the Subnet Mask.
Default  Gateway  Your  ISP  will  provide  you  with  the 
Gateway address, which is the ISP server’s IP address.
DNS  Your  ISP  will  provide  you  with  at  least  one  DNS 
(Domain Name System) server IP address.
PPPoE
Some DSL-based ISPs use PPPoE (Point-to-Point Protocol 
over Ethernet) to establish Internet connections. If you are 
connected to the Internet through a DSL line, check with 
your ISP to see if they use PPPoE. If they do, you will have 
to enable PPPoE.
Internet Connection Type > PPPoE
User  Name  and  Password  Enter  the  User  Name  and 
Password provided by your ISP.
Service Name  (optional)  If provided by  your  ISP,  enter 
the Service Name.
Connect on Demand: Max Idle Time  You can configure 
the  Router  to  cut  the  Internet  connection  after  it  has 
been  inactive  for  a  specified  period  of  time  (Max  Idle 
Time).  If  your  Internet  connection  has  been  terminated 
due to inactivity, Connect on Demand enables the Router 
to  automatically  re-establish  your  connection  as  soon 
as  you attempt  to  access  the  Internet  again. To  use  this 
option, select Connect on Demand. In the Max Idle Time 
field,  enter  the  number  of  minutes  you  want  to  elapse 
before your Internet connection terminates. The default is 
5minutes.
Keep Alive: Redial Period  If you select  this option, the 
Router will periodically check your Internet connection. If 
you are disconnected, then the Router will automatically 
re-establish  your  connection.  To  use  this  option,  select 
Keep Alive. In  the  Redial Period  field,  specify  how often 
the  Router  should  check  the  Internet  connection.  The 
default is 30 seconds.
PPTP
Point-to-Point Tunneling Protocol (PPTP) is a service that 
applies to connections in Europe only.
Internet Connection Type > PPTP
If your ISP supports DHCP or you are connecting through 
a dynamic IP address, then select Obtain an IP Address 
Automatically. If you are required to use a permanent IP 
address to connect to the Internet, then select Specify an 
IP Address. Then configure the following:
Internet  IP  Address  This  is  the  Router’s  IP  address,  as 
seen from the Internet. Your ISP will provide you with the 
IP Address you need to specify here.
Subnet Mask  This is  the Router’s  Subnet Mask, as  seen 
by users on the Internet (including your ISP). Your ISP will 
provide you with the Subnet Mask.
Default  Gateway  Your  ISP  will  provide  you  with  the 
Gateway address, which is the ISP server’s IP address.
DNS  Your  ISP  will  provide  you  with  at  least  one  DNS 
(Domain Name System) Server IP address.