4000 Router Series Layer 2 - WAN Configuration Guide

[LNS] interface ethernet 1/1

[LNS-Ethernet1/1] ip binding vpn-instance vpn1

[LNS-Ethernet1/1] quit

# Configure IP addresses for the interfaces. (Details not shown.)

# Configure the route between the LNS and the remote host. (Details not shown.)

# Create a local user named vpdnuser, set the password, and enable the PPP service.

[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 local authentication for PPP users in ISP domain system.

[LNS] domain system

[LNS-isp-system] authentication ppp local

[LNS-isp-system] quit

# Enable L2TP.

[LNS] l2tp enable

# Create interface Virtual-Template 1, configure its IP address as 192.168.0.1/24 and PPP

authentication as CHAP, and specify 192.168.0.2 as the IP address to be allocated to the PPP

user.

[LNS] interface virtual-template 1

[LNS-virtual-template1] ip address 192.168.0.1 255.255.255.0

[LNS-virtual-template1] ppp authentication-mode chap domain system

[LNS-virtual-template1] remote address 192.168.0.2

[LNS-virtual-template1] quit

# Create L2TP group 1 in LNS mode, configure the local tunnel name as LNS, specify

Virtual-Template 1 for receiving calls, and configure the tunnel peer to belong to vpn1.

[LNS] l2tp-group 1 mode lns

[LNS-l2tp1] tunnel name LNS

[LNS-l2tp1] allow l2tp virtual-template 1

[LNS-l2tp1] vpn-instance vpn1

# Disable tunnel authentication.

[LNS-l2tp1] undo tunnel authentication

2. Configure the remote host:

# Configure the IP address of the remote host as 2.1.1.1, and configure a route to the LNS

(1.1.2.2).

# Create a virtual private network connection by using the Windows system, or install the L2TP

client software, such as WinVPN Client.

# Complete the following configuration procedure (the procedure depends on the client software):

{ Specify the PPP username as vpdnuser and the password as Hello.

{ Specify the Internet interface address of the security gateway as the IP address of the LNS. In this

example, the Ethernet interface for the tunnel on the LNS has an IP address of 1.1.2.2.

{ Modify the connection attributes: set the protocol to L2TP, the encryption attribute to customized,

and the authentication mode to CHAP.