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L2TP Configuration Examples 625
c Configure the IP address of Serial1 interface at LAC side.
[Router-LAC] interface serial 1
[Router-LAC-Serial1] ip address 192.167.0.2 255.255.255.0
d Configure BDR parameters.
[Router-LAC] dialer-rule 1 ip permit
[Router-LAC] interface async 2
[Router-LAC-Async2] async mode protocol
[Router-LAC-Async2] link-protocol ppp
[Router-LAC-Async2] ip address 192.170.0.1 255.255.255.0
[Router-LAC-Async2] ppp authentication-mode chap
[Router-LAC-Async2] remote address pool 1
[Router-LAC-Async2] dialer enable-legacy
[Router-LAC-Async2] dialer-group 1
2 Configuration at the LNS side
a Configure the username and password (when establishing VPN connection in
Windows2000).
[Router-LNS] local-user lns_user service-type ppp password simple
lns
b Define an address pool and assign a VPN address for the dialup user.
[Router-LNS] ip pool 1 192.168.0.3 192.168.0.100
c Implement local AAA authentication on VPN user.
[Router-LNS] aaa-enable
[Router-LNS] aaa authentication-scheme ppp default local
[Router-LNS] aaa accounting-scheme optional
d Configure the IP address of Serial0 interface at LNS side.
[Router-LNS] interface serial 0
[Router-LNS-Serial0] ip address 192.167.0.1 255.255.255.0
e Enable L2TP service and configure a L2TP group.
[Router-LNS] l2tp enable
[Router-LNS] l2tp-group 1
[Router-LNS-l2tp1] tunnel name lns-end
[Router-LNS-l2tp1] allow l2tp virtual-template 1 remote win2000
f Configure the Virtual-Template-related information.
[Router-LNS] interface virtual-template 1
[Router-LNS-Virtual-Template1] ip address 192.168.0.1 255.255.255.0
[Router-LNS-Virtual-Template1] ppp authentication-mode chap
[Router-LNS-Virtual-Template1] remote address pool 1
g Disable tunnel authentication.
[Router-LNS-l2tp1] undo tunnel authentication
h Configure the route to Windows2000.
[Router-LNS] ip route-static 192.170.0.0 255.255.255.0 192.167.0.2
3 Configuration at the user side
■ By default, IPSec is enabled in Windows2000 operation system, so the IPSec
should be disabled after VPN request is originated. Execute
regedit command
in CLI mode, the [Register Editor] dialog box will pop up.