An engineer is implementing an MPLS within the core of the Service Provider network.
What two components are required to build the control and data plane for MPLS Label Switched Paths? (Choose two.)
To build the control and data plane for MPLS Label Switched Paths (LSPs), two components are required:
Label Distribution Protocol (LDP)
Forwarding Information Base (FIB) or Label Forwarding Information Base (LFIB)
Label Distribution Protocol (LDP): LDP is a signaling protocol used to distribute labels to Label Switching Routers (LSRs) for building MPLS LSPs. LDP assigns labels to each forwarding equivalence class (FEC) and advertises these labels to other LSRs in the network, so that they can use them to forward packets along the LSP.
Forwarding Information Base (FIB) or Label Forwarding Information Base (LFIB): The FIB or LFIB is used to store the label forwarding information learned from LDP or other label distribution protocols. It is a routing table that contains information about the next hop for each labeled packet based on the label value. When an LSR receives a labeled packet, it looks up the label in its FIB or LFIB to determine the next hop and then forwards the packet accordingly.
Therefore, the correct answer choices for the question are C (LDP) and D (LFIB).