Service-Class Wred Ecn Backplane - Dell Z9500 Command Reference Manual

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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.

QOS-POLICY-OUT mode

You can configure all the data queues. For Z9500, you can configure queues 0-3.

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.

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

service-class wred ecn backplane

Apply ECN marking on backplane port-queues in a service class.

[no] service-class wred ecn queue-list backplane

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.

Specify that the WRED weight and profile configured for

each queue apply to backplane ports.

Introduced on the Z9500 switch.

Introduced on the Z9000 platform.

Quality of Service (QoS)