DELL 8132 ユーザーズマニュアル

QoS Commands

console(config-if-Te2/0/1)#random-detect queue-parms 0 min-

thresh 5 10 15 50 max-thresh 15 25 50 98 drop-prob-scale 1 2 

3 25

Use the random-detect exponential-weighting-constant command to 

configure the decay in the calculation of the average queue size user for 

WRED on an interface or all interfaces.

random-detect exponential-weighting-constant 

0-15

no random-detect exponential-weighting-constant

•

0–15 — The weighting constant is used to smooth the calculation of the 

queue size using the following formula where the 0-15 value is N.

The default value is 15.

Global Config mode, Interface Config mode (physical and port-channel), 

Interface Range mode

To use the instantaneous queue size in the calculation of WRED drops, set 

the weighting constant to 0. Larger values of N reduce the effect of 

instantaneous changes. To update the current queue size to ½ the difference 

between the previous size and the current instantaneous queue size, set the 

weighting constant to 1. To update the current queue size to 1/4 the 

difference between the previous size and the current instantaneous queue 

size, set the weighting constant to 2, ....

Use the redirect command in Policy-Class-Map Configuration mode to 

specify that all incoming packets for the associated traffic stream are 

redirected to a specific egress interface (physical port or port-channel).

2CSPC4.X8100-SWUM102.book  Page 678  Friday, March 15, 2013  8:56 AM