The correct interpretation is that the VRF CUSTOMER_F has two prefixes with local labels 16 and 17, and remote labels 20 and 21 from LSR 2.2.2.2. This output from the `show mpls ldp bindings vrf` command confirms that MPLS LDP label bindings have been successfully established within the VRF, meaning LDP is exchanging labels for those specific prefixes between the local router and the remote LSR. On the Cisco CCNP ENARSI 300-410 exam, this command is critical for verifying VRF-Lite MPLS LDP operations, as it isolates label bindings to a single VRF rather than showing the global table. A common trap is confusing this with the global `show mpls ldp bindings` output, which would not filter by VRF; the `vrf` keyword is essential when troubleshooting per-VRF label exchange. Remember the memory tip: “VRF filters the bindings, so local and remote labels match the customer’s routes.”
300-410 VRF-Lite Practice Question
This 300-410 practice question tests your understanding of vrf-lite. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command to troubleshoot a VRF-Lite MPLS LDP issue:
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The VRF CUSTOMER_F has two prefixes with local labels 16 and 17, and remote labels 20 and 21 from LSR 2.2.2.2.
The 'show mpls ldp bindings vrf' command displays MPLS label bindings for a specific VRF. The output shows two prefixes (10.4.4.0/24 and 10.5.5.0/24) with local labels (16 and 17) and remote labels (20 and 21) from LSR 2.2.2.2. This indicates that LDP has successfully exchanged labels for these prefixes within the VRF.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
MPLS LDP has not established a session with the remote LSR 2.2.2.2.
Why it's wrong here
Incorrect. Remote bindings are present, indicating a successful LDP session.
✓
The VRF CUSTOMER_F has two prefixes with local labels 16 and 17, and remote labels 20 and 21 from LSR 2.2.2.2.
Why this is correct
Correct. The output shows local and remote label bindings for two prefixes.
Related concept
Read the scenario before looking for a memorised answer.
✗
The labels are not being used because the VRF is not configured correctly.
Why it's wrong here
Incorrect. The bindings are present and valid.
✗
The remote LSR is using the same labels as the local router.
Why it's wrong here
Incorrect. Local labels (16,17) differ from remote labels (20,21).
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
VRF-Lite — This question tests VRF-Lite — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The VRF CUSTOMER_F has two prefixes with local labels 16 and 17, and remote labels 20 and 21 from LSR 2.2.2.2. — The 'show mpls ldp bindings vrf' command displays MPLS label bindings for a specific VRF. The output shows two prefixes (10.4.4.0/24 and 10.5.5.0/24) with local labels (16 and 17) and remote labels (20 and 21) from LSR 2.2.2.2. This indicates that LDP has successfully exchanged labels for these prefixes within the VRF.
What should I do if I get this 300-410 question wrong?
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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