NSE7 Troubleshooting and Diagnostics Practice Question
A FortiGate administrator is troubleshooting a BGP session that fails to establish with a neighbor at 10.0.1.1. Running 'diagnose ip router bgp all' shows the neighbor state as 'Idle'. Which TWO commands should the administrator run NEXT to diagnose the issue?
⚠ Common exam trap
It's easy for candidates to assume 'diagnose ip router bgp all' or 'get router info bgp summary' will provide the root cause, but these commands only confirm the Idle state without revealing whether the issue is configuration or connectivity, leading them to skip the fundamental Layer 3 check and the full configuration review.
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
✓
show full-configuration router bgp
'show full-configuration router bgp' displays the complete BGP configuration, including all neighbor settings, network statements, and route-maps. This allows the administrator to verify that the neighbor at 10.0.1.1 is correctly configured with the proper remote-as, update-source, and any optional parameters that might prevent the session from leaving the Idle state. Option B is correct because a BGP session stuck in Idle often indicates a Layer 3 connectivity issue; pinging the neighbor confirms whether the destination is reachable, which is a fundamental prerequisite for TCP port 179 to establish.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
show full-configuration router bgp
Why this is correct
This displays the complete BGP configuration, including neighbor IP, remote AS, and update-source, helping identify misconfiguration.
- ✓
execute ping 10.0.1.1
Why this is correct
Basic connectivity is required for BGP. ping verifies reachability to the neighbor.
- ✗
diagnose ip router bgp all
Why it's wrong here
The administrator already ran this command. It shows BGP summary, but further detail is needed.
- ✗
diagnose sys session filter dport 179
Why it's wrong here
While TCP 179 is used by BGP, checking sessions is not the most direct next step; connectivity and configuration are more fundamental.
- ✗
get router info bgp summary
Why it's wrong here
This command shows BGP summary, which the administrator likely already seen via 'diagnose ip router bgp all'.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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