Wrr-Queue Bandwidth - Cisco 300 Series Cli Manual

Small business 300 series managed switches command line interface guide release 1.3

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Quality of Service (QoS) Commands

78-21075-01 Command Line Interface Reference Guide

49.18 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.

wrr-queue bandwidth

no wrr-queue bandwidth

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

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

weight1 weight2