Setup Guide

wred Specify WRED curve parameters for a queue.
green Specify green (low) drop precedence to a queue.
weight Specify a weight factor to a queue.
yellow Specify yellow (medium) drop precedence to a queue.
pool0 Service-pool buffer 1 (default service-pool for PFC traffic) .
pool1 Service-pool buffer 0 (default service-pool for both lossy and lossless traffic.
traffic).
number Enter a weight for the queue as a number in the range of 1 to 15. This parameter
applies only if you specify the green or yellow drop precedence.
string Enter the WRED profile name. It is a string of up to 32 characters. Or use one
of the five pre-defined WRED profile names. Pre-defined Profiles: wred_drop,
wred-ge_y, wred_teng_y, wred_teng_. This parameter applies only if you specify a
weight factor.
Default All queues on backplane ports operate in tail-drop (best-effort traffic) mode by default. There is no
default WRED green or yellow profile. The default weight is 0.
Command Modes CONFIGURATION mode
Command
History
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S6100-ON.
9.8(1.0) Introduced on the Z9100-ON.
9.7(0.0) Introduced on the S6000-ON.
9.3.0.0 Introduced on the S6000 and Z9000 platforms
Usage
Information
You can configure only service pool 0. The pool, service0, is used for lossy queues.
A WRED profile contains a set of attributes, such as the minimum and maximum threshold values,
and the maximum drop rate for the received packets. You can add or remove WRED parameter
configurations for one or more shared service pools using a single command. The service-pool
wred command is similar in usage and working to the service-class bandwidth-percentage
queue-id command.
Example
DellEMC(conf-wred) #wred thresh-1
DellEMC(conf-wred) #threshold min 100 max 200 max-drop-rate 40
DellEMC(conf-wred) #wred thresh-2
DellEMC(conf-wred) #threshold min 300 max 400 max-drop-rate 80
DellEMC(conf) #service-pool wred green pool0 thresh-1 pool1 thresh-2
DSCP Color Map Commands
The DSCP color map allows you to set the number of specific DSCP values to yellow or red. Traffic marked as yellow delivers
traffic to the egress queue which will either transmit the packet if it has available bandwidth or drop the packet due to no ability
to send. Traffic marked as red (high drop precedence) is dropped.
dscp
Sets the number of specific DSCP values for a color map profile to yellow or red.
Syntax
dscp {yellow | red} [list-dscp-values]
Quality of Service (QoS) 1275