I have a problem configuring our internet router. we have two main circuits from two different service providers which means two different IPs.
I need to configure static nat of different IP addresses base on ISP's IP for specific servers and nat overload on the external interface for the internal users.
Another requirement is that, the ISP changeover should be automatic (when one goes down, the other takes over automatically). I believe I have to use something like OER and route-maps but I am stuck.