Dell C9000 Line Cards Networking Command-Line Reference Guide for the C9000 Se - Page 1682

queue 0 to queue 7 number string backplane Specify the queue number to which the WRED parameters apply. 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. 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 Description 9.9(0.0) Introduced on the C9010. 9.2.1.0 Introduced on the Z9500 switch. 9.3.0.0 Introduced on the Z9000 platform. 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 1682 Quality of Service (QoS)