3.2.5 L2TP   
Select L2TP (Layer 2 Tunneling Protocol) if your ISP uses an L2TP 
connection. The L2TP connects your router to a L2TP server.   
For Example:   
A corporate branch and headquarter can use this connection type to 
implement mutual and secure access to each other’s resources. 
 
 
 
1.  Internet connection Type: Displays the current Internet 
connection type. 
2.  L2TP Server Address: Enter the IP address of a L2TP server. 
3.  User Name: Enter your L2TP username. 
4.  Password: Enter the password. 
5.  MTU: Maximum Transmission Unit. DO NOT change it from the 
factory default of 1492 unless instructed by your ISP. You may 
need to change it for optimal performance with some specific 
websites or application software that cannot be opened or 
enabled; in this case, try 1450, 1400, etc. 
6.  Address Mode: Select "Dynamic" if you don’t get any IP info 
from your ISP, otherwise select "Static". Consult your ISP if you 
are not clear.