An engineer reviews high availability (HA) settings to understand a recent HA failover event. Review the screenshot below.

An engineer reviews high availability (HA) settings to understand a recent HA failover event. Review the screenshot below.

Which timer determines the frequency at which the HA peers exchange messages in the form of an ICMP (ping)
A . Hello Interval
B. Promotion Hold Time
C. Heartbeat Interval
D. Monitor Fail Hold Up Time

View Answer

Answer: C

Explanation:

The heartbeat interval determines the frequency at which the HA peers exchange messages in the form of an ICMP (ping). The default value is 1000 milliseconds (1 second). The heartbeat interval is used to detect failures and trigger failover in an HA pair1

. The other options are not correct. The hello interval determines the frequency at which the HA peers exchange messages in the form of an HA packet. The default value is 3000 milliseconds (3 seconds). The hello interval is used to establish and maintain HA connectivity2. The promotion hold time determines the amount of time that a passive firewall waits before it becomes active after detecting a failure on the active firewall. The default value is 5000 milliseconds (5 seconds)3. The monitor fail hold up time determines

the amount of time that a firewall waits before it declares a monitor failure after detecting a link down event on an interface. The default value is 2000 milliseconds (2 seconds)4.

References: 1: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/high-availability/ha-concepts/ha-timers

2: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/high-availability/ha-concepts/ha-timers

3: https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/high-availability/ha-concepts/ha-timers

4:

https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/high-availability/ha-concepts/ha-timers