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End-to-End QoS Network Design: Quality of Service for Rich-Media & Cloud Networks, Second Edition by Kenneth Briley Jr., Robert Barton, Christina Hattingh, Tim Szigeti

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Introduction

“Aren’t we done with QoS yet?”

That’s a question I get from time-to-time, which I like to answer along the lines of “As soon as we’re done with availability and security, we’ll be done with QoS also.”

What I’m trying to express—although cheekily—is that although QoS has been around for a while, it is a foundational network infrastructure technology (the same as high-availability technologies and security technologies). And these foundational technologies will always prove to be integral components of any networking system, being present at the platform level, at the place in-the network (PIN) level and ultimately at the end-toend network level.

Furthermore, such foundational network technologies are constantly evolving and expanding ...

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