D-Link DGS-3130 User Manual - Page 145

DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Figure 5-58 Loopback Detection Window The fields that can be configured in Loopback Detection Global Settings are described below: Parameter Loopback Detection State Mode Enabled VLAN ID List Interval Trap State Action Mode Description Select to enable or disable loopback detection. The default is Disabled. Select the loopback detection mode. Options to choose from are Port-based and VLAN-based. Enter the VLAN ID for loop detection. This only takes effect when VLAN-based is selected in the Mode drop-down list. Enter the interval in seconds that the device will use to transmit Configuration Test Protocol (CTP) packets to detect a loopback event. The valid range is from 1 to 32767 seconds. The default setting is 10 seconds. Select to enable or disable the loopback detection trap state. Select the action mode here. Option to choose from are:  Shutdown - Specifies to shut down the port in the port-based mode or block traffic on the specific VLAN in the VLAN-based mode when a loop has been detected.  None - Specifies not to shut down the port in the port-based mode or block traffic on the specific VLAN in the VLAN-based mode when a loop has been detected. Address Type Select the address type here. Options to choose from are Multicast and Broadcast. Click the Apply button to accept the changes made. The fields that can be configured in Loopback Detection Port Settings are described below: Parameter Unit From Port - To Port State Description Select the Switch unit that will be used for this configuration here. Select the appropriate port range used for the configuration here. Select this option to enable or disable the state of the port. Click the Apply button to accept the changes made. 135