ADSL不是很懂，只在2811上刷过命令
interface FastEthernet0/0
ip address 192.168.0.1 255.255.255.0
ip nat inside
interface FastEthernet0/1
pppoe enable
pppoe-client dial-pool-number 1
no keepalive
interface Dialer0
mtu 1492
ip address negotiated
ip nat outside
ip nat enable
encapsulation ppp
dialer pool 1
ppp pap sent-username **** password ****
access-list 1 permit 192.168.1.0 0.0.0.255
ip nat source list 1 interface Dialer0 overload
ip route 0.0.0.0 0.0.0.0 Dialer0
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