- The intercontroller heartbeat between the standby and the active controller occurs every 100 miliseconds
- After 5 missed heartbeats the standby controller will ask the APs to fail over to the standby controller
- How long it takes for the AP to failover is usually a second or less.
- Users get disassociated from the AP when this happens and they have to reassociate after the AP comes up on the standby.
- How long it takes depends on the client, more than anything.