User guide

Configuring the QoS Policy on a WM-AD
Summit WM20 User Guide, Software Release 4.2 145
Configuring the QoS Policy on a WM-AD
The following is an overview of the steps involved in configuring the QoS on a WM-AD.
Step 1 – Define the QoS mode to employ on the WM-AD:
● 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 – Enabling Turbo Voice:
● Ensures WM-AD is optimized for voice performance and capacity
● Can be enabled or disabled on individual WM-ADs
● 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
WM-ADs to use the Turbo Voice parameters for voice traffic, while other WM-ADs 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.
Step 3 – Defining 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:
Table 17: DSCP and Service Class Classifications
DSCP SC/UP DSCP SC/UP DSCP SC/UP
CS0/DE 2/0 AF11 2/0 AF33 4/4
CS1 0/1 AF12 2/0 AF41 5/5
CS2 1/2 AF13 2/0 AF42 5/5
CS3 3/3 AF21 3/3 AF43 5/5
CS4 4/4 AF22 3/3 EF 6/6
CS5 5/5 AF23 3/3 Others 0/1
CS6 6/6 AF31 4/4