Failover link does not depend on the ISP outage because failover link is directly connected between two asa firewalls. At that time, you should check the device status (uptime), failover link status and failover history on both firewalls.
Hi DigiDen,In this case, the switchport learn multiple MAC addresses and as per your configuration at the switchport is as below."authentication host-mode multi-domain"This issue was generated due to multi-domain. To understand this please see the be...