Allied-telesis AT 8000/8POE User Manual Page 294

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Chapter 26: Quality of Service (QoS)
294 Section II: Web Browser Interface
The columns in the menu display the following information:
Port
Displays the port number.
Trunk
Displays the trunk number if the port is a member of a trunk.
Traffic Class
Enter the traffic class’s current egress priority.
Queue
Displays the number of the queue where untagged packets received
on the port are stored on the egress queue.
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.
2. To change the egress queue where ingress untagged frames received
on a port are to be stored on the egress port, refer to Table 5 on
page 135. 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.
3. 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.
4. 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.
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