The book starts with a technology refresher for each of the technologies covered in the design studies, including VPNs, TE, QoS, multicast, Pseudowires, network recovery, and IPv6. Following this overview are detailed design studies, each based on a set of characteristics and objectives common to a profile of networks deploying MPLS. The book contains a design study for an Inter-eXchange Carrier (IXC), a national telco, a Global Service Provider, and an enterprise. The authors develop each design study in a consistent manner, starting with a description of the network environment and supported services. They then identify the objectives that influenced the design. Each study then details all aspects of the network design using the latest MPLS technologies. Finally, a number of lessons to be drawn from the design study are pointed out, allowing readers to apply the solutions that meet their needs.