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mediumDrag & DropObjective-mapped
CCNP Practice Question: Drag and drop the steps of MPLS FRR (Fast…
Drag and drop the steps of MPLS FRR (Fast Reroute) backup tunnel activation into the correct order, from first to last.
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
✓
Pre-configure backup tunnel protecting primary LSP
MPLS FRR begins with pre-configuring backup tunnel, protecting the primary LSP, detecting link/node failure via BFD or interface down, switching traffic to backup tunnel, and then signaling a new LSP for restoration.
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Variation 1. Drag and drop the steps of MPLS FRR (Fast Reroute) backup tunnel activation into the correct order, from first to last.
medium- ✓ A.Configure backup tunnel on PLR
- ✓ B.Merge backup tunnel with protected LSP
- ✓ C.Detect link or node failure
- ✓ D.PLR switches traffic to backup tunnel
- ✓ E.Revert traffic to primary LSP after repair
Why A: MPLS FRR begins with configuring the backup tunnel on the PLR. The PLR then merges the backup tunnel with the protected LSP. When a link or node failure is detected, the PLR immediately switches traffic to the backup tunnel. After the failure is repaired, traffic reverts to the primary LSP via make-before-break.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 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 350-401 exam.