User's Manual

Wireless Array
Configuring the Wireless Array 247
 Egress: Outgoing wired packets are IEEE 802.1p tagged at the Ethernet
port for upstream traffic, thus enabling QoS at the edge of the network.
Wireless QoS - Radios:
 Each SSID can be assigned a separate QoS priority (i.e., traffic class) from
0 to 3, where 3 is highest priority and 2 is the default. See “SSID
Management” on page 249. If multiple SSIDs are used, packets from the
SSID with higher priority are transmitted first.
 The Array supports IEEE802.11e Wireless QoS for downstream traffic.
Higher priority packets wait a shorter time before gaining access to the
air and contend less with all other 802.11 devices on a channel.
 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 264, and “Filters” on page 344.
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.
FROM
Array QoS (Wireless)
TO
Priority Tag 802.1p (Wired)
1 (Lowest priority) 1
00
2 (Default) 5
3 (Highest priority) 6