Ping monitoring:
This mechanism involves monitoring the reachability of a specified IP address. If the firewall cannot ping the address, it may trigger a failover.
[Reference: PAN-OS High Availability (HA) documentation explains that ping monitoring is used to verify the path to a network resource, and failure can trigger an HA event., PAN-OS Administrator’s Guide - HA, Link monitoring:, Link monitoring checks the status of network links. If a monitored link fails, an HA failover can be triggered., Reference: Link monitoring is described in the PAN-OS documentation as a key component of the HA functionality, used to detect link failures., PAN-OS High Availability Link Monitoring, , ]
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