350-501 Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR)

A network engineer is configuring a newly installed PE router at the regional gateway location. The new PE router must use MPLS core routing protocols with the existing P router, and LDP sessions between the two routers must be protected to provide faster MPLS convergence.
Which configuration must the engineer perform on the network so that LDP sessions are established?

  • A. Enable communication over TCP port 646 for T-LDP hello messages.
  • B. Enable RSVP-TE FRR on the LDP interface to protect the LDP session between routers.
  • C. Enable LDP session protection on either one of the routers, which allows them to autonegotiate.
  • D. Set the LDP session protection timer on each router to the same value.
Answer: Option C.
Explanation: 

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