
Transition Networks
S4224 Web User Guide
33558 Rev. C
Page 346 of 669
WRED (Weighted Random Early Detection) Configuration
The
Configuration
>
QoS
>
WRED
menu path lets you configure the Random Early Detection (RED)
settings for queues 0 to 5.
RED cannot be applied to queue 6 and 7. Through different RED configuration for the queues (QoS
classes) it is possible to obtain Weighted Random Early Detection (WRED) operation between queues.
The settings are global for all ports in the device.
The displayed settings are:
Queue
The queue number (QoS class) for which the configuration below applies.
Enable
Controls whether RED is enabled for this queue.
Min
Controls the lower RED threshold. If the average queue filling level is below this threshold, the
drop probability is zero. This value is restricted to
0
-
100
. The default is
0
.
Max DP 1
Controls the drop probability for frames marked with Drop Precedence Level 1 when the average
queue filling level is 100%. This value is restricted to
0
-
100
. The default is 1.
Max DP 2
Controls the drop probability for frames marked with Drop Precedence Level 2 when the average
queue filling level is 100%. This value is restricted to
0
-
100
. The default is
5
.
Max DP 3
Controls the drop probability for frames marked with Drop Precedence Level 3 when the average
queue filling level is 100%. This value is restricted to
0
-
100
. The default is
10
.