Westermo PMI-110-F2G - Manual (Page 104)

4.8.1 QoS Setting
Queue Scheduling
You can select the Queue Scheduling rule as follows:
Use an 8,4,2,1 weighted fair queuing scheme. This is also known as WRR
(Weight Round Robin). PMI will follow 8:4:2:1 rate to process the packets in a
queue from the highest priority to the lowest. For example, the system will
process 8 packets with the highest priority in the queue, 4 with middle priority, 2
with low priority, and 1 with the lowest priority at the same time.
Use a strict priority scheme. Packets with higher priority in the queue will always
be processed first, except that there is no packet with higher priority.
Port Setting
CoS column is to indicate default port priority value for untagged or
priority‐tagged frames. When PMI receives the frames, PMI will attach the value
to the CoS field of the incoming VLAN‐tagged packets. You can enable
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