Quality of Service (QoS) is a system of classifying data that helps guarantee that mission critical data gets through, no matter how busy a network is at any given moment. In this book expert Eric Seigel provides network administrators with practical, hands-on guidance to planning and implementing QoS solutions. He supplies guidelines for choosing the best QoS solution for a particular network and explains the application and network configuration requirements involved. Step-by-step guidance is also provided on how to build QoS solutions. Finally, currently available QoS technologies are given real-world assessments.