4A0-C03: Nokia NRS II Composite Exam: IS-IS versionDemo

By Nokia · Question Mode

QuestionQ15

Multiprotocol Label Switching

A Nokia 7750 SR with LDP enabled has several equal-cost paths to a particular FEC. Once ECMP is enabled, which of the following statements is FALSE?

  • A The router has new entries added for the given FEC in its LIB.
  • B The router has new entries added for the given FEC in its FIB.
  • C The router generates a single label for the given FEC and advertises it to all its peers.
  • D The router has multiple LSP tunnels for the given FEC.
Explanation

LDP ECMP resolves a FEC through multiple equal-cost next hops and forwards traffic across the associated LSPs. This expands the forwarding/NHLFE and tunnel state, but it does not cause the router to originate additional local label bindings for the same FEC in the LIB. A single locally generated FEC-label binding is advertised to LDP peers according to policy.

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