End-of-Life (EoL)

High Availability

High availability (HA) is a deployment in which two firewalls are placed in a group and their configuration is synchronized to prevent a single point of failure on your network. A heartbeat connection between the firewall peers ensures seamless failover in the event that a peer goes down. Setting up two firewalls in an HA pair provides redundancy and allows you to ensure business continuity.
Palo Alto Networks firewalls support stateful active/passive or active/active high availability with session and configuration synchronization with a few exceptions:
The following topics provide more information about high availability and how to configure it in your environment.

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