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Question 116

The active LTM device in a high-availability (HA) pair performs a failover at the same time the network team reports an outage of a switch on the network.

Which two items could have caused the failover event? (Choose two.)

    Correct Answer: A, B

    A VLAN fail-safe setting could trigger a failover if it detects a failure in the network traffic going through a specific VLAN. A monitor on a pool in an HA group could also trigger a failover if it detects that a resource in the pool has become unavailable. Both ensure high availability by initiating a failover to maintain the system's reliability.

Discussion
GVKDOptions: AB

AB - Correct -System fail-safe: The system fail-safe feature enables the BIG-IP system to monitor system components, such as the heartbeat signal of various system daemons. -Gateway fail-safe: The gateway fail-safe feature enables the BIG-IP system to monitor traffic between an active BIG-IP system in a device group and a pool containing a gateway router. -VLAN fail-safe: The VLAN fail-safe feature enables the BIG-IP system to monitor network traffic going through a specified Virtual Local Area Network (VLAN). -HA group: The HA group feature enables the BIG-IP system to monitor the availability of resources for a specific traffic group -HA ordered list and auto-failback: You can configure a traffic group to use a static, ordered list of devices https://my.f5.com/manage/s/article/K95002127

hansamaruOptions: AE

Please check https://support.f5.com/csp/article/K95002127 - K95002127: Troubleshooting BIG-IP failover events It should be due to gateway & vlan fail-safe

WassuOptions: AE

AE , why E , if standby unit failed connectivity to the peer , it becomes active making other unit standby

Degenhardt

Everything you wrote is wrong... If a unit looses connectivity to the peer it stays in its previous status - otherways you would get split brain, when both devices don't see and reach each other

estampie

Then we get A-A rather than a failover