D-Link DGS-1510-28P User Manual - Page 117

DGS-1510 Series Gigabit Ethernet SmartPro Switch Web UI Reference Guide or a VLAN, this signifies a loop on the network. The Switch will automatically block the port or the VLAN and send an alert to the administrator. The Loopback Detection port will restart (change to normal state) when the Loopback Detection Recover Time times out. The Loopback Detection function can be implemented on a range of ports at a time. The user may enable or disable this function using the dropdown menu. To view the following window, click L2 Features > Loopback Detection, as shown below: Figure 5-33 Loopback Detection window The fields that can be configured for Loopback Detection Global Settings are described below: Parameter Loopback Detection State Mode Enable VLAN ID List Interval Traps State Description Select to enable or disable loopback detection. The default is Disabled. Select the loopback detection mode. Options to choose from are Portbased and VLAN-based. Enter the VLAN ID for loop detection. This only takes effect when the VLAN-based is selected in the Mode drop-down list. Enter the interval in seconds that the device will transmit all the CTP (Configuration Test Protocol) packets to detect a loop-back 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. Click the Apply button to accept the changes made. The fields that can be configured for 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. 109