DELL 9.8(0.0) User Manual

The following is a list of the Dell Networking OS version history for this command.

Version

Description

9.7(0.0)

Introduced on the S6000-ON.

9.0.2.0

Introduced on the S6000.

8.3.19.0

Introduced on the S4820T.

8.3.11.1

Introduced on the Z9000.

8.3.7.0

Introduced on the S4810.

Usage 
Information

After you configure a unicast queue as strict-priority, that particular queue, on the 
entire chassis, is treated as a strict-priority queue. Traffic for a strict priority 
is scheduled before any other queues are serviced. For example, if you send 100% 
line rate traffic over the SP 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 eight classes in S-Series or eight classes in case of S6000. Dell Networking OS enables 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.

S4820T

Syntax

bandwidth-percentage percentage
To remove the bandwidth percentage, use the no bandwidth-percentage 
command.

Parameters

Enter the percentage assignment of bandwidth 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.

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Quality of Service (QoS)