Command Line Interface Guide

QoS Commands 681
Default Configuration
The table below shows the default green, yellow, and red TCP and non-TCP
minimum/maximum drop thresholds and the green, yellow and red TCP and
non-TCP drop probabilities.
Command Mode
Global Config mode, Interface Config mode (physical and port-channel),
Interface Range mode
User Guidelines
The Green/Yellow/Red Ranges may overlap and are applied independently
from each other. Within a color, the range from minimum to maximum is
divided into eight (0...7) fixed rates at which packets are dropped based on
the instantaneous egress queue size:
0 - 6.25% of maximum drop probability
max-thresh The maximum threshold to ene dropping at the configured
maximum drop probability for each color and for non-TCP
packets. Range 0 to 100.
drop-prob-scale The maximum drop probability. Range 0-100. Should be
configured to be equal to or larger than the minimum
probability.
Queue ID WRED Minimum
Threshold
WRED Maximum
Threshold
WRED Drop Probability
Scale
0 40/30/20/100 100/ 90/ 80/100 10/ 10/ 10/ 10
1 40/30/20/100 100/ 90/ 80/100 10/ 10/ 10/ 10
2 40/30/20/100 100/ 90/ 80/100 10/ 10/ 10/ 10
3 40/30/20/100 100/ 90/ 80/100 10/ 10/ 10/ 10
4 40/30/20/100 100/ 90/ 80/100 10/ 10/ 10/ 10
5 40/30/20/100 100/ 90/ 80/100 10/ 10/ 10/ 10
6 40/30/20/100 100/ 90/ 80/100 10/ 10/ 10/ 10
Parameter Description
2CSPC4.X8100-SWUM100.book Page 681 Wednesday, August 29, 2012 6:23 PM