CoS Mapping
DSCP Mapping
Shows the mapping relationship between DSCP values and queue priorities.
DSCP Mapping
IP Mapping
Shows the mapping relationship between IP priority and queue.
IP Mapping
Queue Scheduling
When congestion occurs in the network, the device will determine the processing order of forwarding packets according to
the specified scheduling policy, so that high-priority packets are preferentially scheduled.
Queue scheduling algorithm : queue scheduling according to the switch interface.
Strict priority ( SP, Strict Priority) scheduling: The flow with the highest priority is served first, and the flow with the
second highest priority is served until there is no flow at that priority. Each interface of the switch supports 8 queues (
queues 0-7 ), queue 7 is the highest priority queue, and queue 0 is the lowest priority queue. Disadvantage : When
congestion occurs, if there are packets in the high-priority queue for a long time, the packets in the low-priority queue
cannot be scheduled, and data cannot be transmitted.
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