Dell PowerEdge VRTX - Manual (Page 775)

Quality of Service (QoS) Commands 775
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wrr-queue bandwidth
Use the wrr-queue bandwidth global Configuration command to assign
Weighted Round Robin (WRR) weights to egress queues. The weight ratio
determines the frequency at which the packet scheduler removes packets
from each queue. Use the no form of this command to restore the default
configuration.
Syntax
wrr-queue bandwidth weight1 weight2 ... weighting
no wrr-queue bandwidth
Parameters
weight1 weight1... weighting the ratio of bandwidth assigned by the WRR
packet scheduler to the packet queues. See explanation in the User
Guidelines. Separate each value by a space. (Range for each weight: 0–255)
Default Configuration
wrr is disabled by default. The default wrr weight is '1' for all queues.
Command Mode
Global Configuration mode
User Guidelines
The ratio for each queue is defined as the queue weight divided by the sum of
all queue weights (the normalized weight). This sets the bandwidth
allocation of each queue.
A weight of 0 indicates that no bandwidth is allocated for the same queue,
and the shared bandwidth is divided among the remaining queues. It is not
recommended to set the weight of a queue to a 0 as it might stop
transmission of control-protocols packets generated by the device.
All queues participate in the WRR, excluding the expedite queues, whose
corresponding weight is not used in the ratio calculation.
An expedite queue is a priority queue, which is serviced until empty before
the other queues are serviced. The expedite queues are designated by the
priority-queue out num-of-queues command.