
Configuring Network Address Translation
303528-A Rev 00
12-7
Figure 12-4. NAT Replaces the Unregistered Local Address with a Registered Source
Address
Static Address Translation
You can create a one-to-one translation of an unregistered local host address to a
global address. This is referred to as static address translation.
Static address translation does not time out during periods when there is no traffic
on the interface. The translation remains configured until you disable it.
NAT router
Local address
range list
Global address
range list
Current local/global
mapping entry list:
10.0.0.1 192.55.10.1
10.0.0.2 192.55.10.2
10.0.0.15
IP packet
Source address
Destination address
IP0054A
192.55.10.3
15.0.0.0 to 15.255.255.255
50.1.1.0 to 50.1.1.225
192.55.10.0 to 192.55.10.255
192.20.10.0 to 192.20.10.255
192.55.10.20
10.0.0.0 to 10.255.255.255
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