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L2NAT within Same switch

Hello,

I need to deal with the situation with L2NAT on the same switch. Where 2 PC are on same L2 Switch with different range of IP Address and I want PCB to be seen as 10.0.0.1 to PCA, can anyone let me know, is it possible to do that, I believe no, but wants feedback on this

 

Himanshu_Dwivedi_1-1705038536813.png

 

 

20 Replies 20

https://m.youtube.com/watch?v=m22Hu86AsJU

Check this

You can I think config l2nat in same SW but you need svi as gw.

Anyway check video 

Goodluck 

MHM

This video is part 2 of a two-part video series on Layer 2 Network Address Translation for IE Switching. It's expected you have watched video 1 on Layer 2 NAT before this and understand the fundamentals. This video helps you solve more difficult duplicate IP Addressing problems by going into the ...

balaji.bandi
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As per the below document that should work :

https://www.cisco.com/c/en/us/td/docs/switches/lan/industrial/software/configuration/guide/b_l2_nat_ie.html

Are you testing using PC and any PLC ?

int G1/1 is connected to PCB  - where is PC A connected ?

can you post full configuration of IE switch - what IOS running on it.

 

BB

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Hello,

 

I am testing PC TO PC and PCÀ is connected to Fa1/1 Port. Presently I am not in front of switch, but I am trying on packet tracer, I will share you the configuration of the switch from packet tracer.

Thanks for your suggestion, it now worked as per below topology and below configuration

Himanshu_Dwivedi_1-1705217642497.png

l2nat instance TEST

instance-id 1

fixup arp

fixup icmp

inside from host 192.168.1.1 to 10.0.0.2

outside from host 10.0.0.1 to 192.168.1.2

int G1/2

l2nat TEST

 

 

 

 

I am testing PC TO PC and PCÀ is connected to Fa1/1 Port. Presentl

I believe there is limitation fas1/1 port to use for the solution you looking to deploy, check the document it only works Gi1/1 and 1/2 i guess.

But  Glad you able to resolve the issue, suggestion was helpful.  if this is resolve - kindly mark as resolved so future any community member having issue  can refer this solution. thank you for sharing the solution

BB

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Yes I do agree it works only on Gi interfaces that is why I have applied L2 NAT on Gi1/2 and Fas1/1 as normal access port. 

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