Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 1524

service-class buffer shared-threshold-weight Create a service class and associate the threshold weight of the shared buffer with each of the queues per port in the egress direction. A global buffer pool that is a shared buffer pool accessed by multiple queues when the minimum guaranteed buffers for the queue are consumed can be configured on the switch. C9000 Series Syntax Parameters [No] Service-class buffer shared-threshold-weight {[queue0 number] || [queue1 number] || [queue2 number] || [queue3 number] || [queue4 number] || [queue5 number] || [queue6 number] || [queue7 number]} buffer Define the shared buffer settings shared-threshold- Specify the weight of a queue for the shared buffer space weight queue 0 to queue Specify the queue number to which the WRED parameters apply 7 number Enter a weight for the queue on the shared buffer as a number in the range of 1 to 11. Default The default threshold weight on the shared buffer for each queue is 9. Therefore, each queue can consume up to 66.67 percent of available shared buffer by default. Command Modes INTERFACE mode Command History Version Description 9.9(0.0) Introduced on the C9010. 9.7(0.0) Introduced on the S6000-ON. 9.3(0.0) Introduced on the S6000 platform Usage Information You can configure all the data queues. For S6000, you can configure queues 0-7. The following table describes the mapping between the threshold weight of the shared buffer on the queue and the percentage of available shared buffer that is used by the queue for each of the corresponding threshold weights of the shared buffer: sharedthresholdweight on the queue 0 % of available shared buffer that can be consumed by the queue. No dynamic sharing; shared buffer = 0. 1 0.77% 2 1.54% 3 3.03% Quality of Service (QoS) 1524