Di seguito riporto un esempio di configurazione per router Cisco 1720/1721 con WIC-1ADSL e connessione Telecom Alice 7Mbit.
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
no ip domain lookup
ip name-server 151.99.125.2
ip name-server 151.99.125.1
ip name-server 151.99.125.3
ip name-server 212.216.112.222
!
interface ATM0
description Interfaccia ATM0/0 - Wic ADSL
bandwidth 2464
no ip address
no atm ilmi-keepalive
dsl operating-mode ansi-dmt
hold-queue 224 in
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface FastEthernet0
description Interfaccia FastEthernet0/0 - Lan interna
ip address 192.168.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly
speed auto
!
interface Dialer0
description Interfaccia Dialer1 - Connessione Alice ADSL 7Mbit/s
bandwidth 2464
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
ppp pap sent-username aliceadsl password 7 094D42001A0016161800
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
!
no ip http server
no ip http secure-server
ip nat translation timeout 420
ip nat translation tcp-timeout 120
ip nat translation pptp-timeout 420
ip nat translation icmp-timeout 1
ip nat translation max-entries 1000
ip nat inside source list nat interface Dialer0 overload
!
ip access-list extended nat
permit ip 192.168.0.0 0.0.0.255 any
permit icmp 192.168.0.0 0.0.0.255 any
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login
!
end
