As i understand there are 5 main concepts in QoS
I also understand that Cisco says for every platform (almost) there is default queuing mechanism exist , for example -
For 3850 it is 2P6Q3T queuing model , so if we deploy Cisco validated design for 2P6Q3T the whole QoS gets covered for this platform and we don’t need to do anything.
Now My Question is if we use such queuing model where does the classification and Marking go ? are they part of these queuing model ?
next small question is : I read somewhere that Cat 3850/3650 only support Egress queuing, what does that mean ? why not they support ingress queuing ?