NATting over subinterfaces ?

[TryllZ]

Hi,

I intend to apply static NAT to highlighted servers on the KLRTR router but the issue is the interface s0/0/0 has no IP address as it has sub-interface (S0/0/0.203) of frame relay on it. While the pinging from DHCP server works but the NAT does not, as no translations shows up in sh ip nat translations

So I applied the NAT on the sub-interface on S0/0/0.203 but then the sub-interface s000.203 already has an IP assigned to it so it didnt work as NAT translations work but the sender doesn't get a ping response. In simulation mode mode the packets fail at KL_ISP, not sure why even though I have static route set on KL_ISP to enter the network and other devices are able to ping.

If I ping from Internet Web Server to DHCP server on its inside local IP, the ping is successful but fails on pinging on the outside global IP

I applied IP address to S0/0/0 and then I applied NAT on it which I tried but it didnt work.

I need to know how to solve this issue.

Thank You

[deanwebb]

A few questions...

1. What business need is there to use NAT?

2. Why are you still using frame relay? Is this an exercise for a class?

[TryllZ]

Hi,

Thanks you for the reply.

I manage to find the issue.

There was no NAT ip route assigned from KLISP to KLRTR.

Yes this is a university assignment.

Appreciate the response.

Thank You

[deanwebb]

Hello TryllZ - glad that you were able to inspect your code and find the issue!

And, for the record, we're hardly ever touching frame relay anymore in real life, so don't worry if you struggle with that topic.

Worry more about OSPF and BGP.