MANAGING SWITCH
99
Queue Scheduling
The switch support eight CoS queues for each egress port. For each of the eight queues,
two types of scheduling can be configured: Strict Priority and Weighted Round Robin
(WRR).
Strict Priority scheduling is based on the priority of queues. Packets in a high-priority queue
are always sent first and packets in a low-priority queue are only sent after all the high
priority queues are empty.
Weighted RoundRobin (WRR) scheduling is based on the user priority specification to
indicate the importance (weight) of the queue relative to the other CoS queues. WRR
scheduling prevents low-priority queues from being completely ignored during periods of
high priority traffic. The WRR scheduler sends some packets from each queue in turn.
To access this page, click QoS > General > QoS Scheduling.
Figure 4-71. QoS > General > QoS Scheduling
The following table describes the items in the previous figure.
Table 4-69. QoS > General > QoS Scheduling
Item Description
Queue Queue entry for egress port.
Strict Select Strict to assign the scheduling designation to the selected queue.
WRR Select WRR to assign the scheduling designation to the selected queue.
Weight Enter a queue priority (weight) relative to the defined entries (WRR only).
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