350-501 Services Practice Question
A service provider is deploying MPLS L3VPN and wants to ensure that routes from a specific customer VRF are only advertised to a specific remote PE. Which mechanism should be used?
⚠ Common exam trap
Cisco often tests the misconception that route-distinguishers or next-hop-self control route advertisement scope, when in fact they serve entirely different purposes (prefix uniqueness and next-hop resolution, respectively).
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
✓
Applying a route-map to the VRF export statement
A route-map applied to the VRF export statement allows granular control over which routes are advertised to specific BGP VPNv4 neighbors. By matching on route targets or other attributes, the route-map can filter outbound routes per neighbor, ensuring that routes from a specific customer VRF are only sent to a designated remote PE.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Applying a route-map to the VRF export statement
Why this is correct
Correct. A route-map on export can filter routes before they are advertised to other PEs via VPNv4.
- ✗
Configuring a separate VPNv4 address-family for that PE
Why it's wrong here
Incorrect. VPNv4 address-family is a single address-family per BGP process, not per PE.
- ✗
Using a unique route-distinguisher per VRF
Why it's wrong here
Incorrect. RD distinguishes routes from different VRFs but does not filter which PE receives them.
- ✗
Setting the next-hop-self on the PE
Why it's wrong here
Incorrect. Next-hop-self changes the next-hop but does not restrict which PE receives the route.
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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.