D-Link DGS-3630-28SC Quick installation Guide - Page 456
WRED Queue, WRED Drop Counter, QoS > WRED > WRED Queue, From Port - To Port, WRED State, Profile
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DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide 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 7-28 WRED Queue Window The fields that can be configured are described below: Parameter Unit From Port - To Port CoS WRED State Profile Weight ECN State Description Select the Switch unit ID that will be used here. Select the Switch port range that will be used here. Select the CoS value here. The range is from 0 to 7. Select to enable or disable the WRED feature state on the specified port(s) here. Enter the WRED profile ID here. The range is from 1 to 128. Enter the exponential weight value here. The range is from 0 to 15. This feature is used to configure the WRED exponential weight factor for the average queue size calculation for the queue. Select to enable or disable the ECN feature on the specified port(s) here. Click the Apply button to accept the changes made. WRED Drop Counter This window is used to view and clear the WRED drop counter information. 444
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