Figure 5-7: L2Tp - Cisco Systems Linksys WRT150N Mode D'emploi

Wireless-N Home Router
L2TP
Layer 2 Tunneling Protocol (L2TP) is a service that tunnels Point-to-Point Protocol (PPP) across the Internet. It
is used mostly in European countries. Check with your ISP for the necessary setup information.
Server IP Address. This is the IP address that the Router has, when seen from the Internet. Your ISP will
provide you with the IP address you need to specify here.
User Name and Password. Enter the User Name and Password provided by your ISP.
Connect on Demand and Max Idle Time. You can configure the Router to cut the Internet connection after it
has been inactive for a specific 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 Connect on Demand, click the radio
button. If you want your Internet connection to remain on at all times, enter 0 in the Max Idle Time field.
Otherwise, enter the number of minutes you want to have elapsed before your Internet access disconnects.
Keep Alive and Redial Period. This option keeps your Internet access connected indefinitely, even when it
sits idle. If you select this option, the Router will periodically check your Internet connection. If the connection
is down, then the Router will automatically re-establish the connection. To use this option, click the radio
button next to Keep Alive. The default Redial Period is 30 seconds.
Click the Save Settings button. Then click the Status tab, and click the Connect button.
Optional Settings
Some of these settings may be required by your ISP. Verify with your ISP before making any changes.
Host Name and Domain Name. Some 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. The MTU (Maximum Transmission Unit) setting specifies the largest packet size permitted for network
transmission. To manually set a value, select Manual and enter the value desired in the Size field. You should
leave this value in the 1200 to 1500 range. Most DSL users should use the value 1492. The default is Auto, which
allows the Router to select the best MTU for your Internet connection.
Chapter 5: Configuring the Wireless-N Home Router
The Setup Tab - Basic Setup

Figure 5-7: L2TP

packet: a unit of data sent over a network.
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