Dell Z9500 Reference Manual page 1438

Parameters
buffer-pool
wred
green
weight
yellow
pool0
pool1
number
string
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 CONFIGURATION mode
Modes
Command
Version
History
9.2.1.0
9.3.0.0
Usage
You can configure only service pools 0 and 1 because the Dell Networking OS uses
Information
only these two service pools. The service0 pool is used for lossy queues; the
service1 pool is used for lossless (PFC) queues on all platforms.
You can configure the weight for the WRED average queue size on service1 pool
on which PFC is supported; service0 pool 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 buffer-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
1438
Define the mapping between the service class and policy-
based QoS or routing.
Specify WRED curve parameters for a queue.
Specify green (low) drop precedence to a queue.
Specify a weight factor to a queue
Specify yellow (medium) drop precedence to a queue
Service-pool buffer 1 (default service-pool for PFC traffic)
Service-pool buffer 0 (default service-pool for lossy traffic)
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.
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.
Description
Introduced on the Z9500 switch.
Introduced on the S6000 and Z9000 platforms.
Quality of Service (QoS)