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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.
S4820T platform.
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.
S4820T
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,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Quality of Service (QoS)
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