mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router PE7: PE7#…
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?
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 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.
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 router is correctly assigning labels for VPNv4 routes.
Why this is correct
Both entries have valid incoming and outgoing labels.
- ✗
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.
Go deeper
Related to this question
Learn chapter
Introduction to ENARSI Exam and Network Fundamentals
Key term
MPLS Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
Key term
MP-BGP for VPN
MP-BGP for VPN is an extension of the Border Gateway Protocol that carries multiple types of network layer information to enable scalable, isolated virtual private networks over a shared provider infrastructure.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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