QoS: Myths and Hype by John G. Waclawsky
Approx. 3,490 words.
Published on January 2, 2011 by
QoS is the Bigfoot of networking, a enduring part of technological folklore. People talk about QoS, but because it rarely succeeds, it has no practical use outside of experimental testbeds and incomplete applications. Today, the main purpose of QoS is to foster discrimination in services and unnecessary billing.