How to configure IP NAT on cisco 7200 1

[lorenzobalan]

Can someone help?
this is the scenario, I have a cisco 7200 acting as an uplink aggregator to the internet for 5 Cisco 6200 DSLAM. I'm doing IP NAT, I have a Pool of ip /29 to uplink to the internet. The problem that i have is that it only uses one IP instead of 6 addressess available.
I have an idea but i'm not sure how to implement it.
this is the idea.
create Static IP NAT linking each DSLAM to a single IP out of the Pool.

following is an example of my present configuration
gi0/1
ip address x.x.x.1 255.255.255.248
ip nat outside
!
atm1/0
ip address 10.10.1.x 255.255.255.0
ip nat inside
!
atm1/1
ip address 10.10.2.x 255.255.255.0
ip nat inside
!
etc.
!
ip nat pool test x.x.x.1 x.x.x.7 prefix-length 29
ip nat inside source list 3 interface gi0/1 overload
!
ip access-list 3 permit 10.10.0.0 0.0.255.255
!

suggesstions is greatly appreciated..
Thanks for your help..

 

[donjohnston]

The "overload" statement is what's causing this. You're doing PAT (Port-Address Translation).

Replace the line
ip nat inside source list 3 interface gi0/1 overload

with
ip nat inside source list 3 pool test

-Don

 

[lorenzobalan]

Thanks for your quick response. I will change this configuration tonight and post the results.

 

[lorenzobalan]

Hi don, It worked like a baby. Thanks.
Although its not what i expected. what i'm trying to acomplish is to be able to troubleshoot any issues that may arise in tracing any problems on the network. By this i mean is it possible to tie-in a specific uplink address to a specific Network that i'm NATing; Is this possible?

 

[IllegalOperation]

By this i mean is it possible to tie-in a specific uplink address to a specific Network that i'm NATing; Is this possible?"


Just create a different NAT pool for each specific network. You can utilize more than one pool with Cisco's NAT features. Just remember you will need to create an access list to accomodate each network as well....