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SE400 SERIES
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 pre-
vents 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 91: QoS > General > QoS Scheduling
The following table describes the items in the previous figure.
The ensuing table for
Queue Information
settings are informational only: Strict Priority Queue
Number.
Table 73: 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).
% of WRR Bandwidth
Displays the allotted bandwidth for the queue entry in percentage values.
Apply
Click
Apply
to save the values and update the screen.
