CCDE: Cisco Certified Design Expert (Written) — Question 6
Why is H-VPLS considered more scalable than flat VPLS?
Answer options
- A. It minimizes signaling overhead by building two separate layers pseudowire meshes.
- B. It minimizes signaling overhead by only requiring a full pseudowire mesh among N-PEs.
- C. It eliminates signaling overhead on core devices.
- D. It eliminates signaling overhead between the N-PE and U-PE.
Correct answer: A, B
Explanation
The correct answer, A, is accurate because H-VPLS indeed minimizes signaling overhead by establishing two separate layers of pseudowire meshes, which enhances scalability. Option B is also correct as it highlights that H-VPLS requires a full pseudowire mesh only among N-PEs, but the question asks for the more scalable aspect of H-VPLS specifically. Options C and D are incorrect because they do not accurately describe the scalability benefits of H-VPLS.