Network Router User Manual

Configuration Examples
303532-A Rev 00
B-5
Example 2: Remote Router Calling the Corporate Network
Figure B-2 shows a network with two BayStack™ AN
®
routers at the remote site.
The AN routers are using dial-on-demand service for dial-up connections.
In this network, note the following:
• PPP is the WAN protocol for the connection between the ISP network and the
corporate network.
• For the LNS configuration, you do not need to configure a static route for the
remote router’s network because the LNS can learn the route using RIP.
• The IP network addresses are assigned as follows:
[e-mail]: 192.32.40.1
[e-mail]: 192.32.40.2
Figure B-2. L2TP Network with Routers at the Remote Site
The LNS configuration in this example is the same as in Example 1; however, you
must modify the configuration of the remote AN router. Go to the next sections.
Tunnel
L2T0008B
No L2TP
functionality
No L2TP
functionality
LAC 1
LAC 2
LNS
192.32.16.55
RADIUS server
PPP
192.32.26.6
bay_private
.17
.26.0
192.32.40.254
TMS
Modem
[e-mail]
Router
[e-mail]
No active call from mmark;
no tunnel needed
192.32.40.1 [e-mail]
192.32.40.2 [e-mail]
IP addresses in the
RADIUS server database
bay.com = 192.32.16.55
Domain name in TMS database
L2TP IP
interface
ISP network
Corporate
network
Multilink
PPP
TA
ISDN
PC
PC