Reference Guide

Quality of Service (QoS) | 733

Quality of Service (QoS)

Overview

FTOS commands for Quality of Service (QoS) include traffic conditioning and congestion control.

QoS commands are not universally supported on all Dell Networking Products.

This chapter contains the following sections:

• Global Configuration Commands

• Per-Port QoS Commands

• Policy-Based QoS Commands

The symbols

s z under command headings indicate which Dell Networking - , S-Series or

Z-Series, respectively — support the command.

Global Configuration Commands

• qos-rate-adjust

• service-class bandwidth-percentage

• service-class dot1p-mapping

• show qos dot1p-queue-mapping

• strict-priority queue

qos-rate-adjust

By default, while rate limiting, policing, and shaping, FTOS 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

Defaults

QoS Rate Adjustment is disabled by default.

S6000

overhead-bytes

Include a specified number of bytes of packet overhead to include in rate limiting,

policing, and shaping calculations.

S-Series Range: 1 to 31

Range: 1 to 144