Service-Pool Wred - Dell C9000 Series Reference Manual

string
backplane
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 QOS-POLICY-OUT mode
Command History
Version
9.9(0.0)
9.2.1.0
9.3.0.0
Usage Information You can configure queues 0-7. WRED profile contains a set of characteristics, such as
the minimum and maximum WRED thresholds and the maximum drop rate. You can
add and remove WRED parameters for one or more queues by using the command in a
single line. All of the configured attributes apply to all the backplane ports and are for
each queue. To assign drop precedence to green or yellow traffic, use this command. If
there is no honoring enabled on the input, all the traffic defaults to green drop
precedence.
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-class wred green queue5 thresh-1 queue7
thresh-2 backplane
Dell(conf)#service-class wred yellow queue1 thresh-2 queue3
thresh-1 backplane
Dell(conf)#service-class wred weight queue0 11 queue6 4 queue7 9
backplane

service-pool wred

Configure a global buffer pool that serves as a shared buffer accessed by multiple queues when the minimum
guaranteed buffers for a queue are consumed.
The switch supports four global service-pools in the egress direction. Two service pools are used—one for
lossy queues and the other for lossless (priority-based flow control (PFC)) queues. You can enable WRED and
ECN operation on the global service-pools. You can define WRED profiles and weight on each of the global
service-pools for both lossy and lossless (PFC) service-pools.
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.
Specify that the WRED weight and profile configured for each
queue apply to backplane ports.
Description
Introduced on the C9010.
Introduced on the Z9500 switch.
Introduced on the Z9000 platform.
Quality of Service (QoS) 1791