PPPoE配置实例（2600路由器接ADSL Modem）...

hostname pooh
ip host rund 172.17.247.195
!
ip subnet-zero
no ip domain-lookup
!
vpdn enable
no vpdn logging
!
vpdn-group 1
request-dialin
protocol pppoe
!
!
!
!
interface Ethernet0/0
ip address 10.200.56.22 255.255.255.0
ip nat inside
no ip mroute-cache
!
!
!
!
interface Ethernet0/1
no ip address
pppoe enable
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address negotiated
ip nat outside
ip mtu 1492
encapsulation ppp
no ip mroute-cache
dialer pool 1
dialer-group 1
ppp authentication pap
ppp pap sent-username cisco password cisco1
!
ip classless
no ip http server
!
dialer-list 1 protocol ip permit
ip nat inside source list 1 interface Dialer1 overload
ip route 0.0.0.0 0.0.0.0 dialer1
access-list 1 permit 10.200.56.0 0.0.0.255
!
line con 0
exec-timeout 0 0
transport input none
line vty 0 4
login
password ww
!
end
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#p#PPPoA配置实例（2600路由器连接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 password

!--- 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