Billion BIPAC 8500 User Manual page 99

Billion BIPAC-8500 / 8520 SHDSL VPN Firewall Bridge / Router
Example: Configuring LAN-to-LAN L2TP VPN Connection
The branch office establishes a L2TP VPN tunnel with head office to connect two private
networks over the Internet. The routers are installed in the head office and branch office
accordingly.
Attention
Chapter 4: Configuration
Both office LAN networks MUST in different subnet with LAN to LAN
application.
Functions of Pre-shared Key, VPN Connection Type and
Security Algorithm MUST BE identically set up on both sides.
95