300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

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QuestionQ74

MPLS and Segment Routing

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Refer to the exhibit. Traffic flow from router R1 to router R6 is delay-sensitive. It must account for possible link-failure and node-failure conditions. Which configuration must an engineer apply to router R1 to route traffic to router R6 if router R2 fails?

  • A
  • B
  • C
  • D
Explanation

A node-protecting TI-LFA tiebreaker computes and selects a backup path that avoids the protected next-hop node. For failure of R2, R1 can immediately reroute through R3 and R5 toward R6 without traversing R2. Basic TI-LFA alone provides link protection; SRLG-disjoint protection addresses shared-risk link groups rather than the stated node-failure requirement.

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