How to start implementing QoS in an enterprise?

Question

QoS

The question is general about the methods and procedures for implementing QoS in a network of a medium-sized enterprise (> 1500 devices). Who can share experience with what to start directly implementation? There is a lot of theory in the Internet, but little practice.

Answer 1

With complete network documentation, prioritization technology definitions (IPP, DSCP, 802.1p), goal setting (what and how to prioritize) and traffic profile selection (%RT, %BC, %BE).

Answer 2

Probably from what equipment is available and from this you need to build on.