conf t

!

hostname ISP

!

enable secret class

!

!

ip subnet-zero

!

interface ethernet 0 

ip add 10.0.0.1 255.0.0.0

no shutdown

!

!

interface S0

ip add 192.168.4.25 255.255.255.252

 clockrate 56000

 no shutdown

!

interface s1

ip add 192.168.4.21 255.255.255.252

clockrate 56000

no shutdown

!

ip classless

ip route 10.0.0.0 255.255.255.0 S0

no ip http server

!

router rip 

network 10.0.0.0 

network 192.168.4.0

version 2

no auto-summary

!

line con 0

 password cisco

 login

 transport input none

 logging synchronous

 exec-timeout 0 0

line aux 0

line vty 0 4

 password cisco

 login

!

end



!