Alvarion BreezeACCESS II, Системное руководство

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BreezeACCESS Version 4.5 Operations and Administration
Manual Revision: 1.0
BreezeACCESS Subscriber and Access Units support Layer 2
traffic prioritization based on the IEEE 802.1p standard. The
priority field in the 802.1Q header tag can have a value in the
range 0-7. This value determines the relative priority of the
packet.
Tagged frames that are received from the Ethernet port and have
a Priority higher than the value of the VLAN Priority Threshold
will be routed to the Mid queue.
As the system also supports Layer 3 prioritization based on ToS,
packets with precedence in the ToS field that is higher than the
value of the ToS Precedence Threshold parameter will also be
routed to the Mid queue (applicable to both tagged and untagged
frames).
All other packets received from the Ethernet port will be routed
to the Low queue.
Voice frames (RTP packets) generated by SUs with voice support
as well as control and wireless management frames that are
generated in the unit will be routed to the High queue.
Management frames from a station behind a Subscriber Unit
that are intended to reach another BreezeACCESS unit, are not
recognized as management frames by the Subscriber Unit
connected to the originating station. Therefore, any frame
coming from the Ethernet port which is designated to reach
another BreezeACCESS unit via the wireless port will be sent to
the High queue, regardless of the configured Priority options.
The VLAN Traffic Priority menu allows viewing and setting the
following parameters:
#
VLAN Priority – Data (SU only) – Applicable for Access link
only. Displays and sets the value of the VLAN Priority field
for data frames that are transmitted to the wireless link. All
data frames are routed to the Low queue. This parameter will
only impact the way that other VLAN-aware devices will
handle the packet.
Valid values are 0-7.
The default value is 0 .
# VLAN Priority – Management (AU, SU and GU)– Displays
and sets the value of the VLAN Priority field for management
frames in units with a VLAN ID- Management (or VLAN ID –
Management & Voice) value other than 65535. In the unit all
management frames are routed to the High queue. This
NOTE:
Packets Received from the Ethernet port with a ToS Precedence value
higher than the ToS Precedence Threshold defined will be routed to the Mid
queue.