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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
random-detect exponential-weighting-constant
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.
Syntax
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.
Default Configuration
The default value is 15.
Command Mode
Global Config mode, Interface Config mode (physical and port-channel), 
Interface Range mode
User Guidelines
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, ....
redirect
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