I have PAT set up successfully on 6506 chassis - My outside address range is 220.127.116.11 255.255.255.240
Relevant parts of the config below:
ip address 10.0.0.1 255.255.255.0
ip nat inside
ip address 10.0.1.1 255.255.255.0
ip address 10.0.2.1 255.255.255.0
ip address 10.0.3.1 255.255.255.0
ip address 10.0.4.1 255.255.255.0
ip address 10.0.5.1 255.255.255.0
ip address 18.104.22.168 255.255.255.240
description WAN connection
ip nat outside
ip nat inside source list 7 interface GigabitEthernet3/48 overload
ip route 0.0.0.0 0.0.0.0 22.214.171.124
access-list 7 permit 10.0.0.0 0.0.7.255
This works fine but of course is only using the one IP address 126.96.36.199.
Can anyone advise how I can utilize the other outside addresses available or is this not really necessary?
I've browsed through loads of Cisco docs but can't seem to find the answer to this - any help much appreciated!
in order to use all the public IP addresses for NAT you need to define a NAT pool
ip nat pool PUBLIC prefix 28
and to change the ip nat inside source command to reference the pool with pool PUBLIC instead of the WAN interface
However, the real behaviour may be that of using a single IP address also with the pool with overload (PAT) set
Hope to help
I see that a NAT pool can be used in both non overload and overload setups.
In a non overload setup I assume that this means that each of my outside addresses (188.8.131.52/28) can be translated to an internal address.
My question really is that in an overload configuration on the Cisco documentation only one address is used : eg
ip nat pool ovrld 172.16.10.1 172.16.10.1 prefix 24
Is there a way to use the other outside addresses or does overloading always use just the one address?
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