3Com BR-6574N manual

3-1-5 L2TP

If your ISP requires you to use L2TP (Layer-2 Tunneling Protocol) to establish connection, you can select this connection type to establish Internet connection. L2TP is another popular connection method for xDSL and other Internet connection types, and all required setting items are the same with PPTP connection.

Like PPTP, there are two kinds of required setting, we’ll start from ‘WAN Interface Settings’:

Please select the type of how you obtain IP address from your service provider here. You can choose ‘Obtain an IP address automatically’ (equal to DHCP, please refer to ‘Cable Modem’ section above), or ‘Use the following IP address’ (equal to static IP address, please refer to ‘PPPoE xDSL’ section above).

WAN interface settings must be correctly set, or the Internet connection will fail even those settings of PPTP settings are correct. Please contact your Internet service provider if you don’t know what you should fill in these fields.

Now please go to PPTP settings section: