An engineer is implementing a Cisco MPLS TE tunnel to improve the streaming experience for the clients of a video-on-demand server. Which action must the engineer perform to configure extended discovery to support the MPLS LDP session between the headend and tailend routers?
A. Configure a targeted neighbor session.
B. Configure an access list on the interface to permit TCP and UDP traffic.
C. Configure a Cisco MPLS TE tunnel on both ends of the session.
D. Configure the interface bandwidth to handle TCP and UDP traffic between the LDP peers.
Guess A is right.