User's Manual

Wireless Array
Configuring the Wireless Array 251
 How QoS is set for a packet in case of conflicting values:
a. If an SSID has a QoS setting, and an incoming wired packet’s user
priority tag is mapped to a higher QoS value, then the higher QoS
value is used.
b. If a group or filter has a QoS setting, this overrides the QoS value
above. See “Groups” on page 269, and “Filters” on page 351.
c. Voice packets have the highest priority (see Voice Support, below).
d. If DSCP to QoS Mapping Mode is enabled, the IP packet is mapped
to QoS level 0 to 3 as specified in the DSCP Mappings table. This
value overrides any of the settings in cases a to c above.
In particular, by default:
• DSCP 8 is set to QoS level 1.
• DSCP 40 is typically used for video traffic and is set to QoS
level 2.
• DSCP 48 is typically used for voice traffic and is set to QoS
level 3—the highest level
• All other DSCP values are set to QoS level 0 (the lowest level—
Best Effort).
Packet Filtering QoS classification
 Filter rules can be used to redefine the QoS priority level to override
defaults. See “Filter Management” on page 354. This allows the QoS
priority level to be assigned based on protocol, source, or destination.
Voice Support
 The QoS priority implementation on the Array give voice packets the
highest priority to support voice applications.