Which of these tables is used by an LSR to perform a forwarding lookup for a packet destined to
an address within an RFC 4364 VPN?

A.
CEF

B.
FIB

C.
LFIB

D.
IGP

Explanation:
Notice: The term Label Switch Router (LSR) refers to any router that has awareness of MPLS
labels
Label Forwarding Information Base (LFIB) is responsible for forwarding incoming packets based
on label as it holds necessary label information, as well as the outgoing interface and next-hop
information.