IPSLA
Active way to monitor and report on network performance.
Example with multiple WAN links for healthcare.
Configuration
We will first make an entry for IPSLA
(config)#ip sla "2"
You can use multiple protocols and debug tools to run in your IPSLA "entry" including but not limited to TCP, FTP, UDP(voice/video etc), and MPLS
(config-ip-sla)#tcp-connect "other end of link IP" "port" control enable
(config-ip-sla-tcp)#timeout "ms"
Start the IPSLA entry
(config)#ip sla schedule "2" life "forever" start-time "now"
We Can also track an interface with IPSLA
(config)#ip route "0.0.0.0" "0.0.0.0" "10.1.1.2" track "2"