Chapter Review Questions

You can find answers to the following questions in Appendix A, "Answers to the Chapter Review Questions."

1. What is the fundamental purpose of LDP?

2. Name the four main functions that LDP takes care of.

3. How can you reduce the number of label bindings on an LSR?

4. What problem does MPLS LDP-IGP synchronization solve?

5. How many LDP sessions are established between two LSRs that have six links between them, of which two links are LC-ATM links and four are frame links?

6. What do you need to configure to protect the LDP sessions against attacks?

7. What trick does MPLS LDP-IGP Synchronization employ to ensure that the link is not used to forward traffic while the LDP session is unsynchronized?

8. What does LDP Session Protection use to protect an LDP session?

What You Will Learn

By the end of this chapter, you should know and be able to explain the following:

The difference between MPLS operating in Frame mode and Cell mode

How LDP advertises label bindings in an ATM network

How the Label Virtual Circuits are set up

How LDP behaves differently with ATM LSRs

How LDP can provide loop detection

What VC-Merge is, and what its benefit is for ATM LSRs

How to deal with ATM switches that are not aware of MPLS

What a label switch controller is

How to provide CoS with Label Virtual Circuits

The chapter ends with an important note on how to keep the number of Label Virtual Circuits to a minimum.


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