MSM7xx Controllers Configuration Guide v6.4.0

Up to 10 profiles can be selected. To select more than one profile, hold down the CTRL key as you
select profile names in the list.
To define an IP QoS profile, see “Configuring IP QoS profiles” (page 65).
Upstream DiffServ tagging
Enable this option to have the AP apply differentiated services marking to upstream traffic.
Layer 3 upstream marking ensures end-to-end quality of service in your network. Data originating
on the wireless network can now be carried throughout the network (wireless and wired) with a
consistent quality of service and priority. This feature is enabled by default.
When this feature is enabled, packets received on the wireless interface that include Wi-Fi
Multimedia (WMM) QoS values are remarked using IP DiffServ values when transmitted to the
wired network. (Remarking is only done for packets that have a DiffServ value of 0. The original
DiffServ value from the wireless client is preserved for all other packets.)
Upstream/downstream traffic marking
Depending on the priority mechanism that is active, upstream and downstream traffic is marked
as described in this section.
Upstream traffic marking
This table describes the marking applied to wireless traffic sent by connected client stations to an
AP and then forwarded onto the wired network by the AP.
OUTGOING TRAFFIC
Traffic sent by the AP to the network
INCOMING TRAFFIC
Wireless traffic sent
from client stations to
the AP
Mechanism
L3 marking
L2 marking
Upstream DiffServ
tagging is disabled
Upstream DiffServ
tagging is enabled
Pass-through (Original
layer 3 marking, if any,
is preserved.)
DiffServ (Remarking
is only done for
packets that have a
802.1p (Requires an
egress VLAN to be
defined for the VSC.)
WMM802.1p
DiffServ value of 0,
If L3 marking is
enabled and the L3
otherwise the original
value is preserved.)
marking value is
higher than the L2
Pass-through
(Original layer 3
DiffServDiffServ
marking value, then
the L3 marking value
is used for L2 marking.
marking, if any, is
preserved.)
Pass-through
(Original layer 3
TOSTOS
marking, if any, is
preserved.)
Uses the selected
VSC-based value
WMM, Non-WMMVSC-based
(very high, high,
normal, low).
Pass-through
(Original layer 3
WMMIP QoS
marking, if any, is
preserved.)
142 Working with VSCs