configure qosprofile egress wred ecn

configure qosprofile egress qp_num wred ecn [on | off] ports [port_list | all]


This command turns Explicit Congestion Notification (ECN) on or off for the corresponding QoS profile for the given port(s).

Syntax Description

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.



Usage Guidelines

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.

Platform Availability

This command is available on ExtremeSwitching X460-G2, X670, X435, X465, X590, X690, X695, X870, 5520 series switches.