Setup Guide

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_ge_g, 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 pools 0 and 1 because the Dell EMC Networking OS uses only these two
service pools. The pool, service0, is used for lossy queues and the pool, service1, is used for lossless
(PFC) queues in all the platforms.
You can configure the weight for the WRED average queue size for service1, which is the only the
platform in which PFC is supported for this service pool.
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
DellEMC(conf) #service-pool wred yellow pool0 thresh-3 pool1 thresh-4
DellEMC(conf) #service-pool wred weight pool0 11 pool1 4
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]
To remove a color policy map profile, use the no dscp {yellow | red} [dscp-list] command.
Parameters
Yellow Enter the yellow keyword. Traffic marked as yellow delivers traffic to the egress
queue which either transmits the packet if it has available bandwidth or drops the
packet due to no ability to send.
Quality of Service (QoS) 1251