Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 752

N1500 Series Switches N1500 Series switches support a simple RED capability. The N1500 Series switch does not support configuration of the maximum threshold nor can the threshold or drop probability be configured for non-TCP traffic. Only the minimum threshold (min-thresh) and drop probability (drop-prob-scale) may be configured for the TCP colors green/yellow/red. The maximum threshold may not be configured nor can the threshold or drop probability be configured for non-TCP traffic. ECN capability is not supported. Simple RED may be enabled/disabled for any CoS queue on the Dell EMC Networking N1500 Series switches, however, the drop probability must be one of the values given below. The percentage before the dash indicates the actual drop probability. The number after the dash indicates the value entered in the drop-prob-scale parameter. 0.097% - 1 0.195% - 2 0.391% - 4 0.781% - 8 1.563% - 16 3.125% - 31 6.250% - 63 100% - 100 Examples Example 1 This example enables WRED on internal CoS 0 queue for unmarked packets and set the green, yellow, and red colored traffic to utilize WRED starting at 3% of port congestion with a drop probability of 1%, 2% and 3%, respectively. In this configuration, non-TCP traffic uses tail-drop queue discipline with a drop threshold at 100% of the statically calculated port queue length vs. the dynamically calculated value used by the normal tail-drop mechanism (approx. 1/2 remaining free packet buffer memory). console(config)# cos-queue random-detect 0 console(config)# random-detect queue-parms 0 min-thresh 3 3 3 100 max-thresh 10 10 10 100 drop-prob-scale 1 2 3 0 Example 2 Layer 2 Switching Commands 752