mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show bgp ipv4 unicast summary
BGP router identifier 10.0.0.1, local AS number 65001 BGP table version is 10, main routing table version 10
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.0.0.2 4 65002 123 120 10 0 0 02:15:30 5 10.0.0.3 4 65003 50 45 10 0 0 00:00:12 Idle (PfxRcd: 0)
Based on this output, what is the problem with neighbor 10.0.0.3?
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 BGP session to 10.0.0.3 is flapping.
The neighbor 10.0.0.3 shows 'Idle' state with no prefixes received (PfxRcd: 0). The 'Idle' state in BGP indicates that the session is not established, often due to a misconfiguration (e.g., wrong AS number, no route to neighbor, or BGP not activated). The brief uptime (00:00:12) suggests it keeps trying but fails.
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 neighbor 10.0.0.3 is operational and exchanging prefixes.
Why it's wrong here
The state is 'Idle', not 'Established'.
- ✓
The BGP session to 10.0.0.3 is flapping.
Why this is correct
The state 'Idle' with a short uptime indicates the session is down and trying to re-establish.
- ✗
The neighbor 10.0.0.3 has sent 5 prefixes.
Why it's wrong here
PfxRcd is 0, meaning no prefixes received.
- ✗
The BGP table version is mismatched.
Why it's wrong here
The table version is 10 for both neighbors, so no mismatch.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.