Huawei Certified ICT Expert – Routing and Switching (HCIE-RS) — Question 12

Which of the following statements regarding forwarding equivalence class (FEC) in MPLS are incorrect? (Choose all that apply.)

Answer options

• A. Packets with the same FEC are processed differently on a MPLS network.
• B. FECs can be divided flexibly by source IP address destination IP address, source port, destination port, protocol type, VPN, or any combinations of them.
• C. MPLS classifies packets with the same forwarding processing mode into one FEC.
• D. One FEC has only one unique label marker.

Correct answer: B, C

Explanation

The correct answers are B and C because FECs cannot be defined with arbitrary combinations of parameters; they are typically based on specific criteria. Additionally, packets with the same forwarding processing mode are not limited to a single FEC, contradicting statement C. Statements A and D are correct as they reflect how FECs function in MPLS.