Wred Weight - Dell Z9500 Command Reference Manual

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wred-profile

wred weight

Configure the weight factor used to determine the average-queue size for WRED and ECN operation.

The weight value is used in an output QoS policy applied to a front-end or backplane port.

[no] wred weight number

The default weight is zero.

QOS-POLICY-OUT mode

If the average queue size is more than the maximum threshold of WRED, the

packet is dropped. If the average queue size is between the minimum and

maximum threshold values, the decision to drop or queue the packet is taken

based on the packet drop probability. The probability that a packet is dropped

depends on the minimum threshold, maximum threshold, and mark probability

denominator.

Dell(conf-qos-policy-out)# wred weight 5

To indicate network congestion without dropping packets, use explicit congestion notification (ECN).

Quality of Service (QoS)

— creates a WRED profile and name that profile.

— defines the dynamic classification to trust DSCP.

Define the weight factor to be used for computation of the

WRED average-queue size to either enable WRED to discard

packets or cause ECN to mark packets that exceed the

minimum threshold configured. This setting applies to front-

end and backplane ports.

Enter the weight as a number to be used to calculate the

average-queue size. The range is 1 to 15. The default is 0.

Introduced on the Z9500 switch.

Introduced on the S6000 and Z9000 platforms