LANCOM 800+ – LANCOM DSL/I- 10+ – LANCOM DSL/I- 1611 Office
Chapter 1: Introduction
11
EN
In some models the ADSL modem is integrated directly in the router.LANCOM
800+, LANCOM DSL/I-1611 Office or LANCOM DSL/I-10+ are connected to
the splitter using a separate ADSL modem.
LANCOM 800+, LANCOM DSL/I-1611 Office or LANCOM DSL/I-10+
can also utilize other broadband connections (e.g. cable modem) that
offer a 10/100Base-Tx-Ethernet connector over PPPoE, PPTP or plain
Ethernet (with or without DHCP).
1.2
Which use does VPN offer?
For LANCOM DSL/I-
1611 Office only
A VPN (
V
irtual
P
rivate
N
etwork) can be used to set up cost-effective, public
IP networks, for example via the ultimate network: the Internet.
The model LANCOM DSL/I-1611 Office from LCOS-Version 3.32
upwards is equipped with 5 channels by default. The additional
LANCOM VPN Option can extend VPN support to 25 active tunnels.
While this may sound unspectacular at first, in practice it has profound effects.
To illustrate this, let's first look at a typical corporate network without VPN
technology. In the second step, we will see how this network can be optimized
by the deployment of VPN.
Router
ADSL
modem
Internet
Splitter
Telephone
Telephone
network
Splitter
ADSL provider
Switching node
DSL access
multiplexer
Subscriber