Dell 9.7(0.0) manual Wred weight, No wred weight number, Parameters Weight

Usage Information

Related Commands

VersionDescription

8.3.19.0Introduced on the S4820t.

8.3.11.1Introduced on the Z9000.

8.3.7.0Introduced on the S4810.

When you enable wred ecn, and the number of packets in the queue is below the minimum threshold, packets are transmitted per the usual WRED treatment.

When you enable wred ecn, and the number of packets in the queue is between the minimum threshold and the maximum threshold, one of the following two scenarios can occur:

•If the transmission endpoints are ECN-capable and traffic is congested, and the WRED algorithm determines that the packet should have been dropped based on the drop probability, the packet is transmitted and marked so the routers know the system is congested and can slow transmission rates.

•If neither endpoint is ECN-capable, the packet may be dropped based on the WRED drop probability. This behavior is the identical treatment that a packet receives when WRED is enabled without ECN configured on the router.

When you enable wred ecn, and the number of packets in the queue is above the maximum threshold, packets are dropped based on the drop probability. This behavior is the identical treatment a packet receives when WRED is enabled without ECN configured on the router.

wred-profile — creates a WRED profile and name that profile.

wred weight

Configure the weight factor for computation of average-queue size. This weight value applies to front- end ports. This mechanism to configure a weight for WRED and ECN functionality for front-end ports is supported on the S6000 and Z9000 platforms.

S6000

Syntax	[no] wred weight number
Parameters	weight	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 ports only.
	number	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.
Default	The default weight is zero.

1290 Quality of Service (QoS)