Reference Guide

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Quality of Service (QoS)
The Dell Networking OS commands for quality of service (QoS) include traffic conditioning and
congestion control. QoS commands are supported on the S5000 switch.
This chapter contains the following sections:
• Global Configuration Commands
• Per-Port QoS Commands
• Policy-Based QoS 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.
S5000
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 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
Command
History
Version 9.0(1.3) Introduced on the S5000.
Quality of Service (QoS)
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