Policy NAT

This topic is to discuss the following lesson:

Hi Rene,

Believe you have a typo:

R1(config)#interface Gi
R1(config)#interface GigabitEthernet 0/1

Should be

R1(config)#interface GigabitEthernet 0/1
R1(config)#ip nat inside

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Hello Chris

Yes you are correct! Thanks for catching that! I will let @ReneMolenaar know to have that changed.

Thanks again!


Hello Rene,
I haven’t yet tried out, but couldn’t we do something like this instead of using a route-map?

ip nat inside source list TO_ISP1 int g0/2 (or pool POOL_TO_ISP1)
ip nat inside source list TO_ISP2 int g0/3 (or pool POOL_TO_ISP2)


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Hello Network E,

I hope you are doing well. I will admit that I have not read this lesson, but I have read the headline, and I might be able to answer your question. Policy based NAT is done with a route map, if you used some other method to NAT it would not be policy based NAT. So would your config work? Possibly, but if it did you are no longer using policy based NAT.

I hope this helps.

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Hello Network E

@wellerk.scott is absolutely right. You could do it that way as well. However, the exercise was used to show how to use a route-map.

The advantage of using a route map instead is that you have more flexibility by creating more specific NAT rules.

I hope this has been helpful!


Thanks Chris, I fixed this.