D-Link DXS-3600-EM-8T CLI Guide - Page 495

DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide Quantized Congestion Notification (QCN) Commands 49-1 clear qcn counters This command is used to clear QCN counters. clear qcn counters {all | interface INTERFACE-ID [, | -] Parameters all Specifies to clears QCN counters on all interfaces. interface INTERFACE-ID [, Specifies the interface to clear QCN counters. Valid interfaces are physical interface. | -] You can specify multiple interfaces, which are separated by "," (comma) or " -" (hyphen). No space before and after the comma or hyphen. Default Command Mode Command Default Level Usage Guideline None. Privileged EXEC Mode. Level: 3. You can use this command with the interface keyword to clear QCN counters of CP(s) on the specified interface(s). If the command clear qcn counters is issued with the all keyword, the QCN counters of all CP(s) on all interfaces will be cleared. Example This example shows how to reset QCN counters on all interfaces. DXS-3600-32S#clear qcn counters all DXS-3600-32S# 49-2 qcn This command is used to enable the QCN functionality. Use the no form of this command to disable the QCN functionality. qcn enable no qcn enable Parameters Default Command Mode Command Default Level Usage Guideline None. Disabled. Global Configuration Mode. Level: 3. QCN is a form of end-to-end congestion management defined in IEEE 802.1.Qau. The purpose of QCN is to ensure that congestion is controlled from the sending device to the receiving device in a dynamic fashion that can deal with changing bottlenecks. Use this command to enable/disable the QCN functionality. Example This example shows how to enable the QCN functionality. DXS-3600-32S#configure terminal DXS-3600-32S(config)# qcn enable DXS-3600-32S(config)# Example This example shows how to disable the QCN functionality. DXS-3600-32S#configure terminal DXS-3600-32S(config)# no qcn enable DXS-3600-32S(config)# 487