350-501 MPLS and Segment Routing Practice Question
An engineer is troubleshooting MPLS traffic engineering tunnels and needs to verify path calculation and RSVP errors. Which command should be used?
⚠ Common exam trap
Cisco often tests the distinction between MPLS TE-specific commands and general MPLS or routing commands, so the trap here is that candidates might confuse 'show mpls ldp neighbor' (for LDP-based label distribution) with TE tunnel verification, or mistakenly think 'debug mpls lfib errors' is appropriate for RSVP path errors when it actually targets LFIB corruption issues.
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 mpls traffic-eng tunnels
The 'show mpls traffic-eng tunnels' command displays detailed information about MPLS TE tunnels, including path calculation status, RSVP signaling errors, and tunnel state. This command is specifically designed to verify TE tunnel operations and troubleshoot issues such as path computation failures or RSVP resource reservation problems.
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 ip route
Why it's wrong here
This shows the IP routing table, not MPLS TE information.
- ✗
show mpls ldp neighbor
Why it's wrong here
This command shows LDP neighbors, not TE tunnel status.
- ✓
show mpls traffic-eng tunnels
Why this is correct
This command provides details on TE tunnels, including path computation and signaling status.
- ✗
debug mpls lfib errors
Why it's wrong here
Debug commands are used for real-time troubleshooting but are not a show command for verification.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 350-501 question from scratch — 971 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-501 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 350-501 exam.