MSM7xx Controllers Configuration Guide v6.4.0

Downstream traffic marking
This table describes the marking applied to traffic received from the wired network by an AP and
then sent to connected wireless client stations.
OUTGOING TRAFFIC
Wireless traffic sent from the AP to client stations
INCOMING
TRAFFIC
Traffic received from wired
network
Mechanism
Non-WMM ClientWMM Client
HPQ (hardware priority
queueing)
WMM + HPQ (WMM
marking done according to
the rules for the mechanism.)
802.1p802.1p
DiffServDiffServ
TOSTOS
All traffic on the VSC.VSC-based
All traffic that matches the
ports/protocols specified in
the selected IP QoS profiles.
IP QoS
NOTE: Although the WMM specification refers to 802.1D and not 802.1p, this guide uses the
term 802.1p because it is more widely recognized. (The updated IEEE 802.1D: ISO/IEC 15802-3
(MAC Bridges) standard covers all parts of the Traffic Class Expediting and Dynamic Multicast
Filtering described in the IEEE 802.1p standard.)
QoS example
In this example, a single controller provides voice and data wireless support with different quality
of service settings for guests and employees.
VSC #2
SSID=Phone
QoS=Very High Priority
VSC #1
SSID=Guest
QoS=Low priority
VSC #3
SSID=Employee
QoS=Normal priority
VSC #4
SSID=Video
QoS=High priority
Backbone Network
Controller
AP
AP AP
#1 #2 #1 #2
#3
#4
#3
#4
Quality of service 143