PPPoA配置實例 (2600路由器連接Wic-1ADSL)
vpdn enable 
no vpdn logging
!--- default.
! 
vpdn-group pppoe 
request-dialin 
!--- we are the PPPoE client requesting to establish 
!--- a session with the aggregation unit (6400 NRP). 
PRotocol pppoe 
! 
!--- internal Ethernet network.
! 
interface FastEthernet0 
ip address 10.92.1.182 255.255.255.0 
ip nat inside 
!--- DSL interface.
! 
interface ATM0 
no ip address 
no atm ilmi-keepalive
bundle-enable
dsl Operating-mode auto
hold-queue 224 in
!--- All defaults.
!--- PPPoE runs on top of AAL5SNAP, but the 
!--- encap aal5snap command is not used. 
! 
interface ATM0.1 point-to-point 
pvc 1/1 
pppoe-client dial-pool-number 1
!--- pvc 1/1 is an example value that must be changed 
!--- to match the value used by the ISP. 
! 
!--- The PPPoE client code ties into a dialer interface upon 
!--- which a virtual-access interface is cloned. 
! 
interface Dialer1 
ip address negotiated 
ip mtu 1492
!--- Ethernet MTU default = 1500 (1492 + PPPoE headers = 1500)
ip nat outside 
encapsulation ppp 
dialer pool 1
!--- Ties to atm interface. 
ppp authentication chap callin 
ppp chap hostname 
ppp chap passWord 
! 
!--- The ISP will instrUCt you regarding 
!--- the type of authentication to use. 
!--- To change from PPP CHAP to PPP PAP, 
!--- replace the following three lines:
!--- ppp authentication chap callin 
!--- ppp chap hostname 
!--- ppp chap password 
!--- with the following two lines:
!--- ppp authentication pap callin
!--- ppp pap sent-username 
!--- For NAT we are going to overload on the Dialer1 
!--- interface and add a default route out 
!--- since dialer ip address can change. 
ip nat inside source list 1 interface Dialer1 overload 
ip classless 
ip route 0.0.0.0 0.0.0.0 dialer1 
no ip http server 
! 
access-list 1 permit 10.92.1.0 0.0.0.255
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