Sub-interface frame relay nat

Hey all .
Why , when you configured frame relay network and you want to use nat , why you have to use sub interface and point to point ?
i mean like

interface Serial2/0.300 point-to-point ip address 200.0.0.1 255.255.255.0
 frame-relay interface-dlci 300
ip nat outside

Find more posts tagged with

Comments

JeanM

I believe it's because you define the ip address on the sub-interface for the virtual circuit.

http://www.techexams.net/forums/ccna-ccent/43340-nat-over-frame-relay.html

Gngogh

sawnboy12 wrote: »
Hey all .
Why , when you configured frame relay network and you want to use nat , why you have to use sub interface and point to point ?
i mean like
interface Serial2/0.300 point-to-point ip address 200.0.0.1 255.255.255.0
 frame-relay interface-dlci 300
ip nat outside

When you create a Virtual circuit (sub-interface) you have to define the type of network wheather is point-to-point or multi-point... and then you apply nat to the network being nated.. its two different thinks.

You can use nat with frame-relay on a multi-point network and you dont need a sub-interface.. you can apply nat and frame-relay to the physical interface.