CCIE SP MPLS FAQ: Multiprotocol Label Switching (MPLS) Architecture Overview
Q1. Describe some of the drawbacks that you might encounter when using traditional IP routing.
Q2. Why is Policy Based Routing (PBR) unsuitable for engineering traffic in a large network?
Q3. What benefit does the separation of forwarding and control elements, through the use of labels, provide?
Q4. Does every MPLS node need to run an IP routing protocol to exchange IP routing information with other MPLS nodes?
Q5. List the different types of LSRs within an MPLS network.
Q6. Describe the functionality of an Edge-LSR.
Q7. What is a Label Switched Path (LSP) and is it unidirectional or bidirectional?
Q8. Is Cisco Express Forwarding (CEF) necessary on an Edge-LSR?
Q9. Which two tables does the LSR use to hold information that is relevant to the MPLS forwarding component?
Q10. What is the primary difference between the Label Forwarding Information Base (LFIB) and the Label Information Base (LIB)?