CLI Guide

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Quality of Service (QoS)
The Dell Networking operating software commands for quality of service (QoS) include traffic
conditioning and congestion control. QoS commands are not universally supported on all Dell
Networking Products.
Global Configuration Commands
There are only two global configuration QoS commands.
qos-rate-adjust
By default, while rate limiting, policing, and shaping, the system does not include the Preamble, SFD, or
the IFG fields. These fields are overhead; only the fields from MAC destination address to the CRC are
used for forwarding and are included in these rate metering calculations. You can optionally include
overhead fields in rate metering calculations by enabling QoS Rate Adjustment.
Syntax
qos-rate-adjustment overhead-bytes
Parameters
overhead-bytes Include a specified number of bytes of packet overhead to
include in rate limiting, policing, and shaping calculations.
The range is from 1 to 31.
Defaults QoS rate adjustment is disabled by default, and no qos-rate-adjust is listed in
the running-configuration
Command Modes CONFIGURATION
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
service-class dot1p-mapping
Configure a service-class criterion based on a dot1p value.
Syntax
service-class dot1p-mapping {dot1p0 value | dot1p1 value |
dot1p2 queue | dot1p3 value | dot1p4 value| dot1p5 value |
dot1p6 value | dot1p7 value}
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Quality of Service (QoS)