L2TP Configuration Examples 625

cConfigure 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

dConfigure 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

2Configuration at the LNS side

aConfigure the username and password (when establishing VPN connection in Windows2000).

[Router-LNS]local-user lns_user service-type ppp password simple

lns

bDefine 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

cImplement local AAA authentication on VPN user.

[Router-LNS] aaa-enable

[Router-LNS]aaa authentication-scheme ppp default local

[Router-LNS]aaa accounting-scheme optional

dConfigure 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

eEnable 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

fConfigure 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

gDisable tunnel authentication.

[Router-LNS-l2tp1]undo tunnel authentication

hConfigure the route to Windows2000.

[Router-LNS]ip route-static 192.170.0.0 255.255.255.0 192.167.0.2

3Configuration 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.

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3Com 10014299 manual Configure the IP address of Serial1 interface at LAC side, Configure BDR parameters