Reference Guide

The following is a list of the Dell Networking OS version history for this command.
Version Description
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.1.1.1 Introduced on the E-Series.
Usage
Information
After you configure a unicast queue as strict-priority, the specified queue is treated as a strict-priority
queue on the entire switch. Traffic for a strict priority is scheduled before any other queues are serviced.
For example, if you send 100% line rate traffic over a strict-priority queue, it starves all other queues on
the ports on which this traffic is flowing.
Policy-Based QoS Commands
Policy-based traffic classification is handled with class maps. These maps classify unicast traffic into one of four classes. The
system allows you to match multiple class maps and specify multiple match criteria. Policy-based QoS is not supported on logical
interfaces, such as port-channels, VLANs, or loopbacks.
bandwidth-percentage
Assign a percentage of weight to the class/queue.
Z9500
Syntax
bandwidth-percentage percentage
To remove the bandwidth percentage, use the no bandwidth-percentage command.
Parameters
percentage Enter the percentage assignment of weight to the class/queue. The range is from 1
to 100% (granularity 1%).
Defaults none
Command Modes CONFIGURATION (conf-qos-policy-out)
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.2(1.0) Introduced on the Z9500.
8.3.1.9.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
6.2.1.1 Introduced on the E-Series.
Usage
Information
The unit of bandwidth percentage is 1%. If the sum of the bandwidth percentages given to all eight
classes exceeds 100%, the bandwidth percentage automatically scales down to 100%.
Quality of Service (QoS) 1119