!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname ISP1
!
boot-start-marker
boot-end-marker
!
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
!
no ip domain lookup
no ftp-server write-enable
!
!
!
!
interface Loopback1
 ip address 200.20.20.1 255.255.255.255
!
interface FastEthernet0/0
 ip address 172.16.0.1 255.255.255.0
 duplex auto
 speed auto
!
interface Serial0/0
 no ip address
 shutdown
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/1
 no ip address
 shutdown
!
ip classless
ip default-network 172.16.0.0
ip route 0.0.0.0 0.0.0.0 Loopback1
ip route 0.0.0.0 0.0.0.0 172.16.0.2
ip route 0.0.0.0 0.0.0.0 FastEthernet0/0
ip http server
!
!
line vty 0 4
 password cisco
 login
!
!
!
end