Evidence Cross-8/HPoE-10G, User Manual

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To configure and display the Random Early Detection in the web interface:
1. Click Quality of Service and WRED.
2. Scroll all parameters and evoke the Weighted Random Early Detection Configuration.
3. Click the apply to save the setting.
4. If you want to cancel the setting then you need to click the Reset button. It will revert to
previously saved values.
Figure 6-10: The Weighted Random Early Detection Configuration
Parameter description:

Port :
The logical port for the settings contained in the same row.

Group
The WRED group number for which the configuration below applies.

Queue
The queue number (CoS) for which the configuration below applies.

DPL
The Drop Precedence Level for which the configuration below applies.

Enable
Controls whether RED is enabled for this entry.

Min
Controls the lower RED fill level threshold. If the queue filling level is below this threshold,
the drop probability is zero. This value is restricted to 0-100%.

Max
Controls the upper RED drop probability or fill level threshold for frames marked with Drop
Precedence Level > 0 (yellow frames). This value is restricted to 1-100%.

Max Unit
Selects the unit for Max. Possible values are:
Drop Probability: Max controls the drop probability just below 100% fill level.
Fill Level: Max controls the fill level where drop probability reaches 100%.
RED Drop Probability Function
The following illustration shows the drop probability versus fill level function with
associated parameters.