What is exchanged through the HA2 link?

Question

Options

• Ahello heartbeats
• BUser-ID information
• Csession synchronization
• DHA state information

• A
  6% (2)
• C
  91% (31)
• D
  3% (1)

Explanation

Session synchronization (C) is the function of the HA2 data link in Palo Alto Networks high availability. HA2 carries data-plane information - specifically, it syncs session tables, ARP tables, and IPSec security associations between HA peers so that if a failover occurs, active sessions continue without interruption.

Why the distractors are wrong:

• A (hello heartbeats) - Heartbeats travel over the HA1 control link, which monitors peer liveness.
• B (User-ID information) - User-ID sync also flows over HA1, alongside other control-plane data.
• D (HA state information) - HA state (active/passive negotiation, configuration sync) is exchanged on HA1, not HA2.

Memory tip: Think "HA1 = 1dentity and control" (heartbeats, User-ID, HA state) and "HA2 = 2raffic sessions" - HA2 keeps your data plane in sync so traffic flows seamlessly after failover.

No community discussion yet for this question.