An in-depth guide to understanding advanced MPLS implementation, including packet-based VPNs, ATM-based VPNs, traffic engineering, and quality of service. This book contains MPLS theory, design, configuration, and various case studies. Use this book as a reference and guide for designing, implementing, and supporting an MPLS nerwork. Even if you're not using Cisco® equipment, this book can increase your awareness and understanding of MPLS technology as well as provide you with detailed design concepts and rules for building scalable MPLS networks.