
Configuring WLAN Services
Configuring the QoS Policy
SCALANCE WLC711
User Guide, V8.11, 07/2012, C79000-G8976-C260-03 6-35
Configuring the QoS Policy
The following is an overview of the steps involved in configuring the QoS for WLAN Services.
Step 1 — Define the QoS Mode for the Service:
• Legacy — Enables DL (downlink) classification for all clients
• WMM:
– Enables WMM support
– Enables DL classification for WMM clients
– Enables UL (uplink) classification in WMM clients
• 802.11e:
– Enables 802.11e support
– Enables DL classification for 802.11e clients
– Enables UL classification in 802.11e clients
WMM and 802.11e are similar, but they use different signaling (same as WPA and WPA2).
Step 2 — Enable Turbo Voice:
• Ensures traffic is optimized for voice performance and capacity
• Can be enabled or disabled on individual WLAN Services
– If Turbo Voice is enabled, together with QoS modes Legacy, WMM, or 802.11e, DL voice
traffic is sent via Turbo Voice queue instead of voice queue. A separate turbo voice queue
allows for some VNSs to use the Turbo Voice parameters for voice traffic, while other
VNSs use the voice parameters for voice traffic.
– If WMM mode is also enabled, WMM clients use Turbo Voice-like contention parameters
for UL voice traffic.
– If 802.11e mode is also enabled, 802.11e clients use Turbo Voice-like contention parameters
for UL voice traffic.
Note:
The Wireless 802.11n AP does not support the Turbo Voice option.
Step 3 — Define the DSCP and Service Class Classifications:
All 64 DSCP code-points are supported. The IETF defined codes are listed by name and code. Un-
defined codes are listed by code. The following is the default DSCP service class classification
(where SC is Service Class and UP is User Priority):
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Table 6-9 DSCP Code-Points
DSCP SC/UP DSCP SC/UP DSCP SC/UP
CS0/DE 2/0 AF11 2/0 AF33 4/4
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