Users Guide

Quality of Service (QoS)

The Dell Networking OS commands for quality of service (QoS) include traffic conditioning and congestion

control. QoS commands are not universally supported on all Dell Networking products. platform.

Topics:

• Global Configuration Commands

• Per-Port QoS Commands

• Policy-Based QoS Commands

• DSCP Color Map Commands

Global Configuration Commands

There is only one global configuration 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 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.

S4048–ON

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.

Command Modes CONFIGURATION

Command History

This guide is platform-specific. For command information about other platforms, see

the relevant Dell Networking OS Command Line Reference Guide.

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