Cisco Exam 300-410 Topic 2 Question 67 Discussion

Actual exam question for Cisco's 300-410 exam

Question #: 67
Topic #: 2

How does LDP operate in an MPLS network?

AWhen topology changes occur such as a router failure, LDP generates peer discovery messages that terminate the LDP season to propagate an LSP change.

BWhen an adjacent LSR receives LDP discovery messages. TCP two-way handshake ensures that the LDP session has unidirectional connectivity.

CPeer routers establish the LDP session, and the LDP neighbors maintain and terminate the session by exchanging messages

DLDP notification messages allow LERs to exchange label information to determine the next hops within a particular LSP.

Show Suggested Answer

Suggested Answer: B

by Edna at Feb 27, 2023, 04:01 PM

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Rashad

1 months ago

LDP? More like 'Label Distribution Pandemonium' if you ask me. But hey, at least it's not as confusing as BGP, right?

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Zona

1 months ago

I heard LDP stands for 'Lots of Deeply Puzzling' protocols. Anyone else feel that way about MPLS?

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Pearly

1 months ago

A is definitely wrong. LDP doesn't terminate sessions when topology changes, that would be a disaster! It's designed to be resilient to that.

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Diane

4 days ago

C) Peer routers establish the LDP session, and the LDP neighbors maintain and terminate the session by exchanging messages

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Teresita

16 days ago

B) When an adjacent LSR receives LDP discovery messages. TCP two-way handshake ensures that the LDP session has unidirectional connectivity.

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Marquetta

2 months ago

D sounds interesting, but I'm not sure if LER label exchange is the primary function of LDP. Maybe that's more of an RSVP-TE thing.

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3 months ago

I think the answer is C, peer routers establish the LDP session.

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