Chapter 9. Advanced AToM Case Studies

This chapter covers the following topics:

• Load sharing

• Preferred path

• AToM pseudowires with MPLS traffic engineering fast reroute

• AToM pseudowire over GRE tunnel

• Pseudowire emulation in multi-AS networks

• LDP authentication for pseudowire signaling

• Verifying pseudowire data connectivity

• Quality of service in AToM

So far, this book has explained the fundamentals of Any Transport over MPLS (AToM) and discussed the basic pseudowire emulation case studies for LAN and WAN protocols. This chapter takes an in-depth look at more complex scenarios in which routing protocols, MPLS applications, and AToM features interact with one another. Because the advanced deployment scenarios cover a wide range of concepts, the format of this chapter varies somewhat from other case study chapters.