queue weighting-constant

Use queue weighting-constant to specify an exponent for average queue length calculation for a queue.

Use undo queue weighting-constant to restore the default.

Syntax

queue queue-id weighting-constant exponent

undo queue queue-id weighting-constant

Default

The exponent for average queue length calculation is 9.

Views

WRED table view

Predefined user roles

network-admin

Parameters

queue-id: Specifies a queue by its ID.

weighting-constant exponent: Specifies the WRED exponent for average queue length calculation, in the range of 0 to 15.

Usage guidelines

The bigger the exponent is, the less sensitive the average queue size is to real-time queue size changes. The average queue size is calculated using the formula: average queue size = previous average queue size × (1-2^-n) + current queue size × 2^-n, where n can be set with the qos wred weighting-constant command.

Examples

# In WRED table queue-table1, set the exponent for average queue length calculation to 12 for queue 1.

<Sysname> system-view
[Sysname] qos wred queue table queue-table1
[Sysname-wred-table-queue-table1] queue 1 weighting-constant 12

Related commands

• display qos wred table

• qos wred table