Interesting. I assume you're trying to place global and locally addresses machines on the same L2 ethernet and use secondary addresses to place the router on both L3 networks. This part is straight forward, just remember to disable icmp-redirects on this interface to remove a couple ambiguities.
For some special cases I've used policy routing to direct traffic to "the right" nat pool. In your case just base it on source address for the locally addressed endpoints. I've also used loopback addresses to create the outside interface, if you need such a thing. Together those should work for what you're trying to do. But it's far from the intended deployment senario and wouldn't get support for any interesting bugs that are uncovered. There are examples of both of these situations I think it's just a matter of putting it all together. And talk about slow. I'm sure others will have different approaches. Good Luck, Darrell John Mairs wrote: > > Hi, > > can I, if so, how would I go about setting up NPAT on > my 2501's only ethernet port. I am confused as to how > my router will be able to distinguish inside/outside > NAT on the primary/secondary interfaces. > > Essentially I would like to now how to configure the > router to do this with a rudimentary explanation what > is happening. > > I can find thousands of descriptions of how to set up > NAT but none of them show how to do this over a single > LAN interface. > > Any thoughts would be greatly appreciated. > > Thanks for your time, > > John > > __________________________________________________ > Do You Yahoo!? > Send your FREE holiday greetings online! > http://greetings.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30459&t=30459 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

