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
9.7(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 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 on the
S6000 Switch, which is the only platform in which PFC is supported for this service
pool. On the Z9000 Switch, only service0 can be configured because it does not
support PFC.
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
Dell(conf-wred) #wred thresh-1
Dell(conf-wred) #threshold min 100 max 200 max-drop-rate 40
Dell(conf-wred) #wred thresh-2
Dell(conf-wred) #threshold min 300 max 400 max-drop-rate 80
Dell(conf) #service-pool wred green pool0 thresh-1 pool1
thresh-2
Dell(conf) #service-pool wred yellow pool0 thresh-3 pool1
thresh-4
Dell(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
Quality of Service (QoS)
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