This 300-410 practice question tests your understanding of mpls l3vpn. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 on Router PE7:
PE7# show bgp vpnv4 unicast vrf CUSTOMER_E labels
Network Next Hop In Label/Out Label
10.10.10.0/24 10.0.0.8 18/22 10.20.20.0/24 10.0.0.9 19/23
Based on this output, which statement is correct?
The router is correctly assigning labels for VPNv4 routes.
Both entries have valid incoming and outgoing labels.
The router is not receiving labels from its BGP peers.
Why wrong: Out labels are present (22 and 23), so labels are received.
The VRF CUSTOMER_E has no routes.
Why wrong: Two routes are shown, so the VRF has routes.
The label allocation is failing.
Why wrong: Labels are allocated and displayed correctly.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The router is correctly assigning labels for VPNv4 routes.
The show bgp vpnv4 unicast vrf labels command displays the label bindings for VPNv4 routes in a VRF. Each entry shows the incoming label (assigned locally) and outgoing label (assigned by the next hop). The output shows correct label assignments for two prefixes.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The router is correctly assigning labels for VPNv4 routes.
Why this is correct
Both entries have valid incoming and outgoing labels.
Related concept
Read the scenario before looking for a memorised answer.
The router is not receiving labels from its BGP peers.
Why it's wrong here
Out labels are present (22 and 23), so labels are received.
The VRF CUSTOMER_E has no routes.
Why it's wrong here
Two routes are shown, so the VRF has routes.
The label allocation is failing.
Why it's wrong here
Labels are allocated and displayed correctly.
Common exam traps
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.
Trap categories for this question
Command / output trap
Two routes are shown, so the VRF has routes.
Detailed technical explanation
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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.
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FAQ
MPLS L3VPN — This question tests MPLS L3VPN — Read the scenario before looking for a memorised answer..
The correct answer is: The router is correctly assigning labels for VPNv4 routes. — The show bgp vpnv4 unicast vrf labels command displays the label bindings for VPNv4 routes in a VRF. Each entry shows the incoming label (assigned locally) and outgoing label (assigned by the next hop). The output shows correct label assignments for two prefixes.
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.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 18, 2026
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