• LABVN
  • New member
  • Offline

Topic: 300-510 topic 1 question 174

Refer to the exhibit.



A network consultant is updating the company’s MPLS solution and configuring several new PE devices to enable full communication among PE devices connected to the network. The updates must ensure the redundancy and scalability of the network. The egress LSR is configured with mpls ldp explicit-null. While configuring the given PE router to be adjacent to the egress LSR, the consultant notices that MPLS forwarding is not working in the network. Which action resolves the issue?

A.
Open TCP and UDP ports 179.
B.
Configure Cisco Express Forwarding on all routers in the MPLS network.
C.
Configure MVRF on all routers in the MPLS network.
D.
Open TCP and UDP ports 464.

  • DUsoo
  • New member
  • Offline

Re: 300-510 topic 1 question 174

Why we should configure CEF on all routers in the MPLS network?? MPLS is already running and we want to add only few new PEs routers.
What we need is to be open TCP/UDP port 464, which is needed for LDP discovery/ session build

Re: 300-510 topic 1 question 174

If I'm not wrong the LDP port is the 646 and not the 464 listed in answer D.