PAT (Port Address Translation)

==========================

R2#

R2#sh run

!

hostname R2

!

interface FastEthernet0/0

 ip address 192.168.1.254 255.255.255.0

 ip nat inside

 ip virtual-reassembly

 duplex auto

 speed auto

!

interface FastEthernet0/1

 ip address 100.1.1.1 255.255.255.0

 ip nat outside

 ip virtual-reassembly

 duplex auto

 speed auto

!

!

ip nat pool pat 100.1.1.1 100.1.1.1 netmask 255.255.255.0

ip nat inside source list 10 pool pat overload

!

access-list 10 permit 192.168.1.0 0.0.0.255

!

!

end

R2# 

==========================


==========================

R1#sh run

!

hostname R1

!

interface FastEthernet0/0

 no ip address

 shutdown

 duplex auto

 speed auto

!

interface FastEthernet0/1

 ip address 100.1.1.2 255.255.255.0

 duplex auto

 speed auto

!

ip route 192.168.1.0 255.255.255.0 100.1.1.1

R1#  

==========================