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4A0-103 · Question #261

What occurs when facility backup Fast Reroute is enabled for an LSP? Choose 3 answers.

The correct answer is A. Each PLR will signal a bypass tunnel that avoids the next hop node or link B. When a failure occurs the PLR will push and additional label onto the label stack and start forwarding D. The ingress router will set the Local Protection Desired flag in the Session Attribute object of the Path. See the full explanation below for the reasoning.

Question

What occurs when facility backup Fast Reroute is enabled for an LSP? Choose 3 answers.

Options

  • AEach PLR will signal a bypass tunnel that avoids the next hop node or link
  • BWhen a failure occurs the PLR will push and additional label onto the label stack and start forwarding
  • CThe ingress router will include a RRO object in the Path message to indicate which routers are to be PLRs
  • DThe ingress router will set the Local Protection Desired flag in the Session Attribute object of the Path
  • EWhen the bypass tunnel is in use, the MP will include the RRO object in its Patherr message, with the

How the community answered

(54 responses)
  • A
    83% (45)
  • C
    11% (6)
  • E
    6% (3)

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