350-501 MPLS and Segment Routing Practice Question
An engineer is configuring RSVP-TE fast reroute for link protection. Which protection method uses a pre-configured bypass tunnel that protects multiple LSPs on the same link?
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
✓
Facility backup
In RSVP-TE FRR, facility backup uses a bypass tunnel that can protect multiple LSPs on the same link. In contrast, 1:1 detour creates a separate detour LSP for each protected LSP.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Local Path Protection
Why it's wrong here
Refers to segment routing protection.
- ✗
Global Repair
Why it's wrong here
Not a standard FRR method.
- ✗
1:1 detour
Why it's wrong here
Each LSP gets its own detour.
- ✓
Facility backup
Why this is correct
Bypass tunnel protects multiple LSPs.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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