Allied Telesis AT-S63 - Manual (Page 468)

Appendix A: AT-S63 Management Software Default Settings
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Class of Service
The following table lists the default mappings of IEEE 802.1p priority
levels to egress port priority queues.
IEEE 802.1p Priority Level Port Priority Queue
0 Q1
1 Q0 (lowest)
2 Q2
3 Q3
4 Q4
5 Q5
6 Q6
7 Q7 (highest)