I believe it is best practice, as long as you have QoS configured properly. I always configure the wlc with the appropriate QoS with or without the wired side having QoS. Might as well have it there just in case. I usually trust dscp, but you need to understand QoS. Here is a good link that should help.
Scott's right, you should always configure it. You never know when someone is going to want to turn on voice services and throw a wrench into your deployment! I always configure the WLC and AP ports as well as setup the proper wlan profile -> qos mappings on the controller. The qos mappings require the networks to be disabled so it's wise to do this up front.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...