Allied Telesis AT-S79 - Manual (Page 301)

AT-S79 Management Software User’s Guide
Section II: Using the Web Browser Interface 301
4. To change the egress priority queue assignment of an 802.1p priority
class, click the dialog circle of the queue for the corresponding priority.
For example, to direct all tagged traffic with a priority of 4 to egress
queue 3 on the ports, you would click the dialog circle for queue 3 in
the priority 4 row.
5. Click Apply.
Note
The switch does not alter the original priority level in tagged frames.
Frames leave the switch with the same priority level they had when
they entered the switch.