In QoS Part 1, we covered the high-level goals and concepts of using Quality of Service (QoS) to make sure that the most important network traffic gets through if the network becomes congested. This installment discusses the basics of setting up QoS using DSCP markings. It is completely switch agnostic and is intended to make it easier to follow the manual by concentrating on the what (you are doing) and why (you are doing it) rather than the how (do I find where this control is) which is the domain of the manufacturer’s documentation.
