- Good: a way to validate service uptime
- Better: a way to deliver that data to monitoring systems
- Best: an active mechanism that can be used in routing decisions
ip sla 1
icmp-echo 192.168.1.1 source-interface s3/0
frequency 5
ip sla schedule 1 life forever start-time now
ip sla 2
http get http://192.168.1.10
frequency 60
ip sla responder
show ip sla statistics
show ip sla configuration
track 1 ip sla 1 reachability
ip route 192.168.1.0 255.255.255.0 10.3.1.1 track 1
ip route 192.168.1.0 255.255.255.0 10.3.2.1 10
