Observe and troubleshoot
Lab Preflight and Black Box
Run Smart Lab Preflight before Start, and record Network Black Box evidence during incidents or exams.

Goal
Run Smart Lab Preflight before Start, and record Network Black Box evidence during incidents or exams.
Lab Preflight
Open it
In an open lab: workspace More menu -> Preflight check. Start-all can also run server preflight and block when issues are fatal.
What it checks
Images, templates, capacity, and lab lock state (plus related warnings). The report lists:
| Bucket | Meaning |
|---|---|
| Blocking | Must fix before Start |
| Warnings | Can proceed, but review |
| Passed | Clear |
Recipe
- Open the lab in Operate (or Design)
- More -> Preflight check
- Fix blocking items (missing images, capacity, locks)
- Re-run, then Start all when
can start
Network Black Box
Open it
Lab More menu -> Black Box.
What you get
| Action | Use it for |
|---|---|
| Start / Stop recording | Session evidence timeline |
| Add note | Manual incident markers |
| Event list | Recorded events for the lab |
| Capture references | Links only when a real capture id exists |
Use Black Box when teaching troubleshooting or collecting evidence for a failed Validate / capture session - not as a full packet store.
Related
- Packet capture
- Visualize, Present, and Preview
- Classroom for instructors
- Features