本文主要給大家講述了路由器L2TP的配置流程，同時給出了大家配置原理圖，以及詳細的配置命令，相信看過此文會對你有所幫助。

Client:
Now create configuration...
Current configuration
!
version 1.65
hostname R1
!
interface Aux0
async mode interactive
encapsulation ppp
!
interface Ethernet0
speed auto
duplex auto
no loopback
!
interface Ethernet1
speed auto
duplex auto
no loopback
!
interface Serial0
encapsulation ppp
ppp pap sent-username Lemon@richinfo.com password　0 *****
ip address negotiate
!
interface Serial1
clock-select DTECLK1
encapsulation ppp
shutdown
!
voice-port 0
!
voice-port 1
!
end

LAC:
Now create configuration...
Current configuration
!
version 1.65
user Lemon@richinfo.com service-type ppp password 0 *****
vpdn enable
aaa-enable
aaa authentication ppp default local
aaa authentication login default local
aaa accounting optional
hostname R2
!
interface Aux0
async mode interactive
encapsulation ppp
!
interface Ethernet0
speed auto
duplex auto
no loopback
!
interface Ethernet1
speed auto
duplex auto
no loopback
!
interface Ethernet1
speed auto
duplex auto
no loopback
!
interface Serial0
clock-select DTECLK1
encapsulation ppp
ppp authentication　pap
!
interface Serial1
encapsulation ppp
ip address 202.103.1.21 255.255.255.252
!
vpdn-group 1
request dialin l2tp ip 202.103.1.22 fullusername *****
l2tp tunnel password 0 ****
!
end

LNS:
Now create configuration...
Current configuration
!
version 1.65
user Lemon@richinfo.com service-type ppp password 0 *****
vpdn enable
ip local pool 1 192.168.1.2 192.168.1.254
aaa-enable
aaa authentication ppp default local
aaa authentication login default local
aaa accounting optional
hostname R3
!
interface Aux0
async mode interactive
encapsulation ppp
!
interface Ethernet0
speed auto
duplex auto
no loopback
!
interface Serial0
no loopback
!
interface Serial0
encapsulation ppp
shutdown
!
interface Serial1
clock-select DTECLK1
encapsulation ppp
ip address 202.103.1.22 255.255.255.252
!
interface Virtual-Template1
encapsulation ppp
ppp authentication　pap
peer default ip address pool 1
ip address 192.168.1.1 255.255.255.0
!
vpdn-group 1
accept dialin l2tp virtual-template 1 remote R2
l2tp tunnel password 0 ****
!
end
 

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