I have a remote site with an ASA to the internet. It will have a default route pointing to that ASA. However, if the ASA (locally attached via a switch) dies, I want the remote site to learn a new default route from another site site with an ASA connecting to the internet. My routing protocol will be OSPF in a single area 0. IS there a way for a router to PING (via saa probes, or something similar) to determine whether to install it's default route into the routing table? What is the easiest way to do this? (Have a default route dependent on whether the next hop address- ASA- is accessible).