Using ip sla to realize Route switching
Ip sla monitor 2
Type echo protocol ipIcmpEcho monitoring destination address source-ipaddr monitors the source address of this link
Timeout 2000 timeout 2000 milliseconds
Frequency 30 30 consecutive times
Ip sla monitor schedule 2 life forever start-time now monitors from now on
Track 2 rtr 2 reachability tracks responses from 2 ip sla monitor2
Ip route 0.0.0.0 0.0.0.0 next hop A track 2
Ip route 0.0.0.0 0.0.0.0 next hop B 10
When the monitored destination address is normal, the red entry appears in the routing table.
When the destination address of the monitoring is fail, the blue entry appears in the routing table to achieve handover.
Note: the route entry can be a default route or any route.
