D-Link DGS-3630 User Manual 1 - Page 458

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide To view the following window, click QoS > QoS PFC > PFC Port Settings, as shown below: Figure 7-26 PFC Port Settings Window The fields that can be configured in PFC Port Settings are described below: Parameter Unit From Port - To Port Willing Description Select the Switch unit ID that will be used here. Select the Switch port range that will be used here. Select to enable or disable the willing feature here. This is used to turn on the Data Center Bridging Exchange Protocol (DCBX) PFC willing feature which indicates that the specified local port(s) is/are willing to accept PFC configurations from a remote system. Click the Apply button to accept the changes made. The fields that can be configured in Clear PFC Counters are described below: Parameter Unit From Port - To Port Frame Type Description Select the Switch unit ID that will be used here. Select the Switch port range that will be used here. Select the All option to specify that all ports will be used here. Select the frame type that will be cleared here. Options to choose from are: • RX - Specifies to clear the counters of received PFC frames. • TX - Specifies to clear the counters of transmitted PFC frames. • Both - Specifies to clear the counters of received and transmitted PFC frames. Click the Clear button to clear the counters based on the selections made. WRED Weighted Random Early Detection (WRED) is another implementation for QoS that will help the overall throughput for your QoS queues. Based on the egress queue of the QoS function set on the Switch, this method will analyze these packets and their QoS queue to determine if there will be an overflow of packets entering the QoS queues and consequentially, minimize the packet flow into these queues by dropping random packets. 446