User guide

Packet Over SONET Module Installation and User Guide 3-53
Configuring QoS Functions
Figure 3-8: Comparisons of RED and WRED operation
PoS_010
Packet
drop
probability
Average queue length
A. RED Operation on SONET Ports
B. WRED Operation on SONET Ports
100
Minimum
threshold
Configured drop-probability
Maximum
threshold
0
Packet
drop
probability
Average queue length
100
Minimum
threshold
High-drop-probability
Low-drop-probability
Maximum
threshold
0