[Packet Tracer] CISCO路由器透過ADSL浮動IP上網

vpdn enable
vpdn-group office
request-dialin
protocol pppoe

interface Ethernet1

no ip address
pppoe enable
pppoe-client dial-pool-number 1

interface Dialer1

ip address negotiated
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication pap callin
ppp pap sent-username xxxxxxx password 0 yyyyyyy

interface Ethernet0

ip address 10.1.1.1 255.255.255.0

ip nat inside


ip dhcp excluded-address 10.1.1.1


access-list 1 permit 10.1.1.0 0.0.0.255

ip nat inside source list 1 interface Dialer1 overload

ip route 0.0.0.0 0.0.0.0 Dialer1

大体上就这些 有需要的话可以再往上加