We have SLA monitoring set up to ping a Google DNS server with the IP address of 188.8.131.52. We also have a default route pointing to the next hop of our primary ISP. If that primary ISP failed then we would want traffic to fail over to the secondary ISP on our outside2 interface. This SLA Monitor was configured before my time with the company, and the primary ISP never fails, so I'm not sure if a backup default route to the secondary ISP was ever configured and added to the SLA Monitor. I really can't shut down the outside interface for our primary ISP to test, so is there any way to check the CLI or the ASDM of an ASA5510 to see if the backup DEFAULT route is configured. From my understanding, you can only ever see this backup DEFAULT route if the primary fails. I hope I'm wrong because I would love to find a way to see if that backup DEFAULT route even exists. Also, what are the best practices for an SLA Monitor? Should I point it to the next hop for our primary ISP, or is the Google DNS server it is pointed to now sufficient?
Does anyone know the answer to this?