I understand the concept of QoS that you should queue customers upload closest to the customer(on cpe) and download(closest to the circuit). I have been experimenting with doing some Traffic Prioritization throughout my network. What is the answer for “best practice”, Should you put QoS(Traffic Prioritization) on your edge routers and just let traffic flow through your transport routers or should it be put on every router throughout the network? See examples below for network diagram example of what I am asking.
Traffic Prioritization- Not customer specific traffic but traffic type QoS.
RT1:(Core Router)
ether1(WAN)
ether2(rt2 interconnect)
*Customer Download QoS
*Traffic Prioritization on this router
RT2:(Transport Router)
ether1(uplink/rt1 interconnect)
ether2(transport to rt3 via wireless link)
RT3:(Edge Router)
ether1(uplink/rt2 interconnect)
ether2(to ap switch(customers))
*Traffic Prioritization on this router
CPE
*Customer Upload QoS
Is this “best practice”? Or should i have Traffic Prioritization on RT2 aswell?