Asus GigaX2024X - Manual (Page 53)

GigaX Series L2 Managed Switch User Guide
4.5.10 CoS Queue Mapping
The switch supports 4 egress queues for each port. For each queue, you
can specify the scheduling types as follows:
• Strict priority scheduling: each CoS value can map into one of the four
queues. The queue 4 has the highest priority to transmit the packets. And
packets in the low-priority queue do not transmit until all the high-priority
queues become empty. In Strict priority scheduling, weight settings always
zero.
• Weighted round-robin (WRR) scheduling: WRR scheduling requires you
to specify a number the indicates the importance (weight) of the queue
relative to other CoS queues. WRR scheduling prevents the low-priority
queues from being completely neglected during periods of high-priority
traffic. The WRR scheduling transmits some packets from each queue in
turn. The number of packets it sends corresponds to the relative
importance of the queue. For example, if Queue1 has a weight of 1 and
Queue2 has a weight of 2, one packet is sent from the Queue1 for every
two that are sent from the Queue2. By using this scheduling, low-priority
queues have the opportunity to send packets even through the
high-priority queues are not empty. The fixed weights are 1,2,4,8.
Click to save the configuration. Click on to refresh the
settings to current value. To make the configuration effective, go to “Save
Configuration” page, then click
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