PAT config

Unanswered Question
Aug 10th, 2007

Hi guys,

I am trying to start PAT translation

I have a 2600 router with one serial interface (outside) and one fa inte (inside).

There is a switch attached to the fa interface with two hosts.

On the router i have coded whats below:

ip nat pool pula_moja netmask

ip nat inside source list 8 pool pula_moja overload


access-list 8 permit

please help!!!!!

i dont get it i guess!!!

I have this problem too.
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Jon Marshall Fri, 08/10/2007 - 00:37


If you want to use PAT then you don't need a nat pool

ip nat inside source list 8 interface s0/0 overload

access-list 8 permit

int fa0/0

ip nat inside

int s0/0

ip nat outside



bartolc12 Fri, 08/10/2007 - 00:49

how do i specify the addresses?

let's say that my host are -11

my vlan is and my router fas ethernet interface is

Should i just change the addresses of my hosts, change the access list and nat will translate my host addresses into the fast ethernet address and vice versa?

Jon Marshall Fri, 08/10/2007 - 04:03


Sorry i realised the answer i gave before didn't quite fit what you were asking. The confusion comes from the fact that you are trying to do PAT but you are mapping 2 inside hosts to 2 natted addresses which isn't really PAT.

Do you want to do PAT or nat ie.

2 hosts on the inside and 2 addresses to NAT to could be done as follows

ip nat inside source static

ip nat inside source static

You original config should work - what are you seeing when you test it ?


Route_reflector Sun, 08/12/2007 - 20:42

Seems ur confs are ok. Have u configured "IP nat inside" at ur Fas side and "IP nat outside" at Serial inteface ??



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