Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 566

What is the role of LDP in MPLS networks?

Answer options

• A. It creates MPLS packet forwarding along with the IGP routes.
• B. It enables label binding information to exchange with peer LSRs.
• C. It disables label binding information to exchange with peer LSRs.
• D. It enables label binding that exchanges route descriptors.

Correct answer: B

Explanation

The correct answer is B because LDP (Label Distribution Protocol) is specifically designed to exchange label binding information between peer LSRs (Label Switch Routers) in an MPLS network. Options A and D are incorrect as they misrepresent the primary function of LDP, while option C incorrectly states that it disables label binding exchange.