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Using Nat with several class c addresses

I am looking for information about Nat configurations. Basically what I have is 5 class c address ranges. I want to know if the is a way to do a 1-1 ratio using a class b address (ie 10.10.x.x)

The first 1273 addresses would be 1-1. I would like the last routable address to resolve to the rest of the non-routable class b (1-many) I have found some info but nothing pertaining to exactly what I want. Any information would be helpful. Thank you

Tom

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Re: Using Nat with several class c addresses

The following links address your issue in configuring 1 to 1 and 1 to many for a particular subnet. Please go thro the link.

http://www.cisco.com/warp/public/556/3.html

http://www.cisco.com/warp/public/105/nat_routemap.html

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