The keyword overload enables PAT.
Step 3 Specify the inside interface.
RouterX(config)# iinntteerrffaaccee type number
RouterX(config-if)# ip nat inside
After you enter the interface command, the CLI prompt changes from (con?¬?g)#
to (con?¬?g-if)#.
Step 4 Specify the outside interface.
RouterX(config-if)# iinntteerrffaaccee type number
RouterX(config-if)# ip nat outside
260 Chapter 7: Managing Address Spaces with NAT and IPv6
Use the command show ip nat translations in EXEC mode to display active translation
information.
The NAT inside-to-outside process comprises this sequence of steps:
Step 1 The incoming packet goes to the route table and the next hop is identi?¬?ed.
Step 2 NAT statements are parsed so that the interface serial 0 IPv4 address can
be used in overload mode. PAT creates a source address to use.
Step 3 The router encapsulates the packet and sends it out on interface serial 0.
For the return traf?¬?c, the NAT outside-to-inside address translation process works in the
following sequence of steps:
Step 1 NAT statements are parsed. The router looks for an existing translation and
identi?¬?es the appropriate destination address.
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