Advantech EKI-7716 Series, Руководство пользователя

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95 EKI-7716 Series User Manual
4.8.1.3 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 4.92 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 Prior-
ity Queue Number.
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 val-
ues.
Apply Click Apply to save the values and update the screen.