Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 789

Explicit Congestion Notification (ECN): ECN capability is an end-to-end feedback mechanism. Both ends of the TCP connection must participate. When ECN is enabled, packets marked as ECN capable and selected for discard by WRED are marked CE and are not dropped. In cases of extreme congestion, ECN capable packets may be dropped. Use the show interfaces traffic command to see color aware drops and congestion levels. ECN capability can be enabled in Windows Server 2008 and later releases using the following command: netsh interface tcp set global ecncapability=enabled N1500 Series Switches N1500 Series switches only 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. Dell EMC Networking N1500 Series switches implements a simple Random Early Discard (RED) capability. 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 Layer 2 Switching Commands 789