Users Guide
Quality of Service (QoS)
The Dell Networking OS commands for quality of service (QoS) include trac conditioning and congestion control. QoS commands are not
universally supported on all Dell Networking products. platform.
Topics:
• Global Conguration Commands
• Per-Port QoS Commands
• Policy-Based QoS Commands
• DSCP Color Map Commands
Global Conguration Commands
There is only one global conguration QoS command.
qos-rate-adjust
By default, while rate limiting, policing, and shaping, Dell Networking OS does not include the Preamble, SFD, or the IFG elds. These elds
are overhead; only the elds from MAC destination address to the CRC are used for forwarding and are included in these rate metering
calculations. You can optionally include overhead elds in rate metering calculations by enabling QoS Rate Adjustment.
S3048–ON
Syntax
qos-rate-adjustment overhead-bytes
Parameters
overhead-bytes Include a specied 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.
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
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