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mti
Community Member

Using NAT in Overlapping Networks

is it possible to dynamically nat between rfc1918 networks where the host portion of the ip address is maintained during the translations? I've looked at the cco pages for nat but don't see this detailed. since ios and pix are converging, and i know how to do this on a pix, but not sure how to do this with two 3640 routers, is there any help out there?

thanks!

1 REPLY
Bronze

Re: Using NAT in Overlapping Networks

When a device on your network is assigned an IP address that is on the same subnet as another device on the Internet or external network, the result is overlapping networks.

This is a common result when two companies merge together.

It is possible to allow communication between two overlapping networks without having to renumber any devices by using Network Address Translation (NAT).

The internal host must initiate the connection to the external host by the domain name, rather than by the IP address

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