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NAT/PAT using secondary IP addresses

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ShadwSrch

IS-IT--Management
Mar 9, 2005
72
US
If I assign multiple IPs on an interface like this:
interface FastEthernet0
description Connected to Internet via Cable Modem (Charter)
ip address xxx.xxx.xxx.143 255.255.255.0 secondary
ip address xxx.xxx.xxx.144 255.255.255.0 secondary
ip address xxx.xxx.xxx.145 255.255.255.0 secondary
ip address xxx.xxx.xxx.146 255.255.255.0 secondary
ip address xxx.xxx.xxx.147 255.255.255.0 secondary
ip address xxx.xxx.xxx.7 255.255.255.0

And I use this NAT statement:
ip nat inside source list 1 interface FastEthernet0 overload

Will I ever PAT on any of the secondary IPs?

I will be putting static nats on each of the other IP addresses.
 
Hello
It's not clear what's your attentions but PAT will only translate on fastethernet0 as the command says "interface fastethernet overload".It has no reference to the secodary ip address.
Regards
 
if your only overloading on the physical interface it will use the primary ip address...

if you want to use the secondaries then create a nat pool and then overload on it... you will be given an ip from the pool you create.
 
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