350-401 Question 75
Single answerAn organization is deploying a virtualized network infrastructure and wants to ensure scalability and simplified management. They plan to implement VRF-lite to segment traffic between different departments. Which statement accurately describes a key requirement or consideration when deploying VRF-lite?
- A
VRF-lite requires the use of MPLS to function properly.
- B
Each VRF instance in VRF-lite requires a unique routing table.
- C
VRF-lite can only be implemented on physical interfaces, not sub-interfaces.
- D
VRF-lite automatically propagates routing entries between VRFs without additional configuration.
Show answer and explanation
Correct answer: B
Explanation
VRF-lite allows for the segmentation of traffic by creating separate routing tables for different VRFs on a single device. This does not require MPLS, and it is flexible enough to be applied to physical or sub-interfaces. However, it does not automatically propagate routes between VRFs, which is a manual process that requires specific configuration. The key requirement is ensuring each VRF has a unique routing table for proper segmentation.
- A. Incorrect.
VRF-lite does not depend on MPLS; it can function without MPLS and works by isolating routing tables on a single device.
- B. Correct.
This is correct. Each VRF instance requires its own unique routing table to achieve traffic segmentation and isolation of routes.
- C. Incorrect.
This is incorrect. VRF-lite can be applied to both physical interfaces and sub-interfaces, allowing flexibility in deployment.
- D. Incorrect.
This is incorrect. Routing entries are not automatically propagated between VRFs in VRF-lite; additional configuration such as route leaking is required.