NSE7 Troubleshooting and Diagnostics Practice Question
A FortiGate cluster (A-P) has a session that is not synchronizing to the secondary unit. The administrator runs 'diagnose sys ha session-sync status' and sees that the session count is different between primary and secondary. Which is the most likely cause?
⚠ Common exam trap
It's easy for candidates to assume all sessions are synchronized by default, but FortiGate explicitly excludes local-in traffic (management sessions) from HA synchronization, so a session count difference is normal and expected for those sessions.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The session was created by a local-in traffic (e.g., management traffic) which is not synchronized.
FortiGate A-P clusters synchronize sessions via the HA heartbeat interface, but local-in traffic (e.g., management sessions like HTTPS, SSH, or SNMP) is never synchronized because it is destined to the cluster IP itself and is inherently unit-specific. The 'diagnose sys ha session-sync status' command shows a session count mismatch because the primary unit has local-in sessions that the secondary does not replicate, making D the correct answer.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The session is using a custom application control profile that prevents synchronization.
Why it's wrong here
Application control profiles do not affect session sync.
- ✗
The HA heartbeat interface is down.
Why it's wrong here
If heartbeat is down, no synchronization would occur at all.
- ✗
The secondary unit has insufficient memory to accept new sessions.
Why it's wrong here
Memory issues would cause more widespread problems.
- ✓
The session was created by a local-in traffic (e.g., management traffic) which is not synchronized.
Why this is correct
Local-in sessions are typically not synced across HA members.
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