D-Link DES-3528 User Manual page 138

xStack DES-3528 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
The following parameters may be set:
Parameter Description
From port/To port A consecutive group of ports may be configured starting with the selected port.
Class ID Select the Class ID, from 0-7, to configure for the SRED parameters. Selecting all will set the
parameters configured here for all CoS queues.
Drop Green Enabled: probabilistic drop yellow and red colored packets if the queue depth is above the lower
threshold, and probabilistic drop green colored packets if the queue depth is above the upper
threshold.
Disabled: probabilistic drop red colored packets if the queue depth is above the lower threshold,
and probabilistic drop yellow colored packets if the queue depth is above the upper threshold.
Green packets will not be dropped even it reach the threshold.
Threshold Low Threshold Low refers to the drop red packets it might also include yellow packets.
Threshold High Threshold High refers to the drop yellow or green packets depending on the drop mode.
Drop Rate Low There are eight drop rates as shown below, the user may determine the drop rate for the
expected packet.
Drop Rate High
Configure Value Drop rate for expected packet
1
2
3
4
5
6
7
8
100%
6.25%
3.125%
1.5625%
0.78125%
.390625%
0
0.1953125%
0.09765625%
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