To configure Panorama in HA, you require a pair of identical
Panorama servers with the following requirements on each:
The Panorama servers in the HA configuration are peers and you
can use either (active or passive) to centrally manage the firewalls,
Log Collectors, and WildFire appliances and appliance clusters,
with a few exceptions (see
Synchronization
Between Panorama HA Peers). The HA peers use the management
(MGT) interface to synchronize the configuration elements pushed
to the managed firewalls, Log Collectors, and WildFire appliances
and appliance clusters to maintain state information. Typically,
Panorama HA peers are geographically located in different sites,
so you need to make sure that the MGT interface IP address assigned
to each peer is routable through your network. HA connectivity uses
TCP port 28 with encryption enabled. If encryption is not enabled,
ports 28769 and 28260 are used for HA connectivity and to synchronize
configuration between the HA peers. We recommend less than 500ms
latency between the peers. To determine the latency, use Ping during
a period of normal traffic.