I am working on a 2801 router that has been set up with nat on the inside and outside interface as so:
ip nat outside
ip nat inside
ip nat inside source route-map SDM_RMAP_1 interface FastEthernet0/0 overload <<this is the outside interface
The last router I worked with only had this applied to the outside interface, is there an advantage to putting it in either place? is it proper to have it in both places? could it cause problems having it on both interfaces? Is it only working on the one interface because that is where the route map is set to?