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DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide
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Parameter Description
Profile Enter the WRED profile ID here. The range is from 1 to 128.
Packet Colour Select the packet color here. Options to choose from are Green, Yellow, and
Red.
Green - Specifies the WRED drop parameters for green packets to be set.
Yellow - Specifies the WRED drop parameters for yellow packets to be set.
Red - Specifies the WRED drop parameters for red packets to be set.
Min Threshold Enter the minimum threshold value here that will be used to start WRED
dropping. The range is from 0 to 100.
Max Threshold
Enter the maximum threshold value here over which WRED will drop all
packets destined for this queue. The range is from 0 to 100.
Max Drop Rate Enter the maximum drop-rate value here. The range is from 0 to 14. This
feature specifies the drop probability when the average queue size reaches the
maximum threshold. When this value is zero, then the packet will not be
dropped or remarked for ECN.
Click the Apply button to accept the changes made.
Click the Find button to locate a specific entry based on the information entered.
Click the Reset Configuration button to reset the configuration on the specified entry.
WRED Queue
This window is used to display and configure the WRED queue settings. WRED drops packets, based on the average
queue size exceeding a specific threshold, to indicate congestion. Explicit Congestion Notification (ECN) is an
extension to WRED in that ECN marks packets instead of dropping them when the average queue size exceeds a
specific threshold value. When configuring the WRED ECN feature, routers and end hosts would use this marking as
a signal that the network is congested and slow down sending packets.
To view the following window, click QoS > WRED > WRED Queue, as shown below:
Figure 7-21 WRED Queue Window
The fields that can be configured are described below:
Parameter Description
Unit Select the Switch unit ID that will be used here.
From Port - To Port Select the Switch port range that will be used here.
CoS Select the CoS value here. The range is from 0 to 7.
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