ROUTER 1
ena
config ter
hostname gateway
enable secret class
line vty 0 4
password cisco
line cons0
password cisco
int s0/0
ip address 200.2.2.18 255.255.255.252
no shutdown
clock rate 64000
exit
int fa0/0
ip address 10.10.10.1 255.255.255.0
no shutdown
clock rate 64000
exit
int fa0/0
ip address 10.10.10.1 255.255.255.0
no shutdown
ip route 0.0.0.0 0.0.0.0 200.2.2.17
ip nat pool public-access 199.99.9.40 199.99.9.62 netmask 255.255.225
access-list 1 permit 10.10.10.0 0.0.0.255
ip nat inside souce list 1 pool public-access
interface fastethernet 0/0
ip nat inside
interface s0/0
ip nat outside
exit
------ip nat inside source static 10.10.10.10 199.99.9.33 ------- con esta linea se declara la ruta estatica

ROUTER 2
ena
config t
hostname ISP
enable secret class
line vty 0 4
password cisco
line cons 0
password cisco
int s0/0
ip address 200.2.2.17 255.255.255.252
no shut
ip route 199.99.9.32 255.255.255.224 200.2.2.18
interface loopback 0
ip address 172.16.1.1 255.255.255.255