User Guide

Wi-Fi Array
Configuring the Wi-Fi Array 237
z 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:
z Each SSID can be assigned a separate QoS priority (i.e., traffic class) from
0 to 3, where 3 is highest priority and 0 is the default. See “SSID
Management” on page 238. If multiple SSIDs are used, packets from the
SSID with higher priority are transmitted first.
z 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.
z 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 245, and “Filters” on page 289.
c. Voice packets have the highest priority, as described below (Voice
Support).
Packet Filtering QoS classification
z Filter rules can be used to redefine the QoS priority level to override
defaults. See “Filter Management” on page 291. This allows the QoS
priority level to be assigned based on protocol, source, or destination.
FROM
Array QoS (Wireless)
TO
Priority Tag 802.1p (Wired)
0 (Lowest priority) 0 (Default)
11
25
3 (Highest priority) 6