conf t
hostname r1
lin con 0
exec-timeout 0 0
logg sy
exit
int e0/0<内网口>
ip add 10.1.1.254 255.255.255.0
ip nat inside
no shut
exit
int s0<外网口>
ip nat outside
no shut
exit
access-list 1 permit 200.1.1.1 0.0.0.0
ip nat pool ct 10.1.1.1 10.1.1.3 prefix-length 24 type rotary
ip nat inside destination list 1 pool ct
exit
wr
show ip nat trans