What are static NAT translations?

Static NAT translations have one-to-one mapping between local and global addresses. Users can also configure static address translations to the port level, and use the remainder of the IP address for other translations. This typically occurs where you are performing Port Address Translation (PAT).

The following example shows how to configure routemap to allow outside-to-inside translation for static NAT:

ip nat inside source static 1.1.1.1 2.2.2.2 route-map R1 reversible
!
ip access-list extended ACL-A
permit ip any 30.1.10.128 0.0.0.127'
route-map R1 permit 10
match ip address ACL-A