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# Configure IP addresses for the interfaces. (Details not shown.)
# Create a local user named vpdnuser, set the password, and enable the PPP service.
<LNS> system-view
[LNS] local-user vpdnuser class network
[LNS-luser-network-vpdnuser] password simple Hello
[LNS-luser-network-vpdnuser] service-type ppp
[LNS-luser-network-vpdnuser] quit
# Configure PPP address pool.
[LNS] ip pool aaa 192.168.0.10 192.168.0.20
[LNS] ip pool aaa gateway 192.168.0.1
# Create interface Virtual-Template 1, specify the PPP authentication mode as PAP, and use the
address pool aaa for the client.
[LNS] interface virtual-template 1
[LNS-virtual-template1] ppp authentication-mode pap
[LNS-virtual-template1] remote address pool aaa
[LNS-virtual-template1] quit
# Configure local authentication for PPP users in ISP domain system.
[LNS] domain system
[LNS-isp-system] authentication ppp local
[LNS-isp-system] quit
# Enable L2TP, and create L2TP group 1 in LNS mode.
[LNS] l2tp enable
[LNS] l2tp-group 1 mode lns
# Configure the local tunnel name as LNS, and specify Virtual-Template 1 for receiving tunneling
requests from a specific LAC.
[LNS-l2tp1] tunnel name LNS
[LNS-l2tp1] allow l2tp virtual-template 1 remote LAC
# Enable tunnel authentication, and configure the authentication key as aabbcc.
[LNS-l2tp1] tunnel authentication
[LNS-l2tp1] tunnel password simple aabbcc
[LNS-l2tp1] quit
# Configure a static route so that packets destined for the PPP user will be forwarded through the
L2TP tunnel.
[LNS] ip route-static 10.2.0.0 16 192.168.0.2
2. Configure the LAC:
# Configure IP addresses for the interfaces. (Details not shown.)
# Enable L2TP.
<LAC> system-view
[LAC] l2tp enable
# Create L2TP group 1 in LAC mode.
[LAC] l2tp-group 1 mode lac
# Configure the local tunnel name as LAC, and specify the IP address of the tunnel peer (LNS).
[LAC-l2tp1] tunnel name LAC
[LAC-l2tp1] lns-ip 3.3.3.2
# Enable tunnel authentication, and configure the authentication key as aabbcc.
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