NSE7 Advanced Networking and SD-WAN Practice Question
A FortiGate is configured with policy-based routing to force traffic from subnet 10.0.1.0/24 to go through a WAN interface. The administrator notices that traffic from 10.0.1.0/24 is still using the default route. Which debug command can confirm if the policy-based routing is being applied?
⚠ Common exam trap
Test-takers frequently confuse `diagnose debug routing policy` (which debugs route-map-based policy routing, not PBR) with the correct flow-based PBR debug command, or they mistakenly think `get router info policy-based-route` (which only shows configuration) can confirm real-time application of PBR.
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
✓
diagnose debug flow policy-based-route
The `diagnose debug flow policy-based-route` command enables flow-based debugging specifically for policy-based routing (PBR) decisions. This command shows real-time details on how the FortiGate processes packets against PBR rules, including which policy matches and which egress interface is selected, allowing the administrator to confirm whether PBR is being applied to traffic from 10.0.1.0/24.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
diagnose debug routing ip-probe 10.0.1.1 8.8.8.8
Why it's wrong here
This is for SD-WAN probes, not policy routing.
- ✓
diagnose debug flow policy-based-route
Why this is correct
This command shows details of policy-based routing matches and actions.
- ✗
diagnose debug enable && diagnose debug router policy
Why it's wrong here
There is no 'debug router policy' command; the correct command is 'diagnose debug flow policy-based-route'.
- ✗
get router info policy-based-route
Why it's wrong here
This command shows configuration but not real-time matching debug.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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