In this example, a route is installed when an address is NOT reachable..
Useful for backup routes, or automated turnups

ip sla 6
icmp-echo 8.8.8.8
timeout 500
frequency 3
ip sla schedule 6 life forever start-time now

track 101 ip sla 6 reachability
track 102 list boolean and
object 101 not

ip route 192.168.186.0 255.255.255.0 192.168.180.1 track 102

In this example, a route is installed when an address IS reachable.
ip sla 6
icmp-echo 8.8.8.8
timeout 500
frequency 3
ip sla schedule 6 life forever start-time now

track 101 ip sla 6 reachability

ip route 192.168.186.0 255.255.255.0 192.168.180.1 track 101

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