Users Guide

committed burst size. Traffic is considered to be green-colored up to the point at which the unused
bandwidth does not exceed the committed burst size.
Peak rate refers to the maximum rate for traffic arriving or exiting an interface under normal traffic conditions.
Peak burst size indicates the maximum size of unused peak bandwidth that is aggregated. This aggregated
bandwidth enables brief durations of burst traffic that exceeds the peak rate and committed burst.
In releases of Dell Networking OS earlier than Release 9.3(0.0), you can configure only the maximum shaping
attributes, such as the peak rate and the peak burst settings. You can now specify the committed or minimum
burst and committed rate attributes. The committed burst and committed rate values can be defined either in
bytes or pps.
You can use the rate-shape pps peak-rate burst-packets command in the QoS Policy Out
Configuration mode to configure the peak rate and burst size as a measure of pps. Alternatively, you can use
the rate shape kbps peak-rate burst-KB command to configure the peak rate and peak burst size as
a measure of bytes.
Similarly, you can use the rate-shape pps peak-rate burst-packets committed pps committed-
rate burst-packets command in the QoS Policy Out Configuration mode to configure the committed
rate and committed burst size as a measure of pps. Alternatively, you can use the
rate shape kbps peak-
rate burst-KB committed kbps committed-rate burst-KB command to configure the committed
rate and committed burst size as a measure of bytes. If you configure the peak rate in pps, the peak burst size
must also be configured as a measure of number of packets. Similarly, if you configure the peak rate in Kbps,
the peak burst size must also be configured as a measure of bytes.
Configuring Policy-Based Rate Shaping
You can configure the rate shaping for QoS output policies in packets per second (pps).
You can explicitly specify the rate shaping functionality for QoS output policies as peak rate and committed
rate attributes. You can also configure the peak burst and committed burst sizes. All of these settings can be
configured in Kbps, Mbps, or pps.
To configure the peak and committed rates and burst sizes, perform the following steps:
1 Configure the peak rate and peak burst size in pps in QoS Policy Out Configuration mode.
QOS-POLICY-OUT mode
Dell(config-qos-policy-out)# rate shape pps peak-rate burst-packets
2 Alternatively, configure the peak rate and peak burst size in bytes.
QOS-POLICY-OUT mode
Dell(config-qos-policy-out)# rate shape Kbps peak-rate burst-KB
3 Configure the committed rate and committed burst size in pps.
QOS-POLICY-OUT mode
Dell(config-qos-policy-out)# rate shape pps peak-rate burst-packets committed
pps committed-rate burst-packets
4 Alternatively, configure the committed rate and committed burst size in bytes.
Quality of Service (QoS) 793