This essential guide helps you understand the features and benefits of service-aware hierarchical Quality of Service (QoS) and how to leverage QoS in designing and implementing leading-edge IP networks. The author's vast experience provides a solid theoretical and practicaloverview of how QoS can be implemented to reach the business objectives defined for an IP/MPLS network. The knowledge acquired from this book will enable the network professional to create a solid QoS architecture/design, which is mandatory to prioritize services throughout the network. The book is a reference I will return to again and again." - Brent Conrad, Senior Network Architect, Bell Canada This book educates readers on the detail operation of Quality of Service through IP/MPLS networks for converged services. I highly recommend it for network designers and test engineers." - Dean Lee, Senior Product Manager, IXIA