This command turns Explicit Congestion Notification (ECN) on or off for the corresponding QoS profile for the given port(s).
| qp_num | QoS profile (qp1, qp2, qp3, qp3, qp4, qp5, qp6, qp7, qp8) |
| wred | Designates weighted random early detection (WRED). |
| ecn | Designates ECN. |
| on | Enables ECN. |
| off | Disables ECN. |
| ports | Selects ports. |
| port_list | Selects specific ports to apply the ECN setting for the designated QoS profile. |
| all | Selects all ports to apply the ECN setting for the designated QoS profile. |
N/A.
Weighted Random Early Detection (WRED) drops the packets, based on the average length exceeding a specific threshold value to indicate congestion. Explicit Congestion Notification (ECN) is an extension to WRED that marks the drop-eligible packets, instead of dropping, using the same criteria of minimum threshold, maximum threshold, and drop probability
The following example enables ECN for QoS profile 5 on port 2:
# configure qosprofile egress qp5 wred ecn on ports 2
This command was first available in ExtremeXOS 22.3.
This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X690, and X695 series switches.