Lab Minutes Forum
Technical Discussion => Routing and Switching => Topic started by: ackld on February 22, 2014, 07:28:33 AM
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Hi there,
Can you please explain what NAT on a stick is with an example? I
I really can not find a lot of cut to the chase explanation and I am still not sure how it function.
Thanks a lot
Rick
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NAT on a router usually requires two interfaces; inside and outside. In a situation where you have only one interface, you can leverage a loopback interface for your 'ip nat outside'. The trick is to force traffic to be routed out the loopback using global policy-based routing. Once the packet is NATed, the router will once again consult the routing table to route packet to destination.
I know it is a strange concept and personally have not found real-life application for it. the last time I encountered this was in a CCIE lab.
Here is the link to Cisco Doc.
http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/6505-nat-on-stick.html
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Thank you. I will have a look.