Allied Telesis AT-S80 - Manual (Page 300)

Chapter 31: Quality of Service (QoS)
300 Section II: Using the Web Browser Interface
Queue
Displays the number of the queue where untagged packets received
on the port are stored on the egress queue. In this field, 0 is the lowest
value and 3 is the highest value.
Override
Displays whether the priority level in ingress tagged frames is being
used or not. If No, the override is deactivated and the port is using the
priority levels contained within the frames to determine the egress
queue. If Yes, the override is activated and the tagged packets are
stored in the egress queue specified in the Queue column.
3. To assign a PVID to a port, type a PVID between 1 and 4,000 in the
PVID field.
For information about the PVID, see “Port VLAN Identifier” on
page 102.
4. To change the egress queue where ingress untagged frames received
on a port are to be stored on the egress port, use the pull-down menu
in the Queue column and select the desired queue. The range is 0
(lowest) to 3 (highest). The default is 0. For example, if you select 3 for
queue 3 for a port, all ingress untagged packets received on the port
are stored in egress queue 3 on the egress port. (If you perform Step 3
and override the priority level in ingress tagged packets, this also
applies to tagged packets as well.)
If the selected port is part of a port trunk, all ports in the trunk are
automatically assigned the same egress queue.
5. To configure a tagged port so that the switch ignores the priority tag in
ingress tagged frames, select Enable from the Override column for the
corresponding port.
The default for this parameter is disabled, meaning that the priority
level of tagged frames is determined by the priority level specified in
the frame itself.
6. Click Apply.
Note
The tagged information in a frame is not changed as the frame
traverses the switch. A tagged frame leaves a switch with the same
priority level that it had when it entered.