D-Link DES-3028 Product Manual - Page 144
Loopback Detection Settings, Loopback Detection Settings window, Parameter, Description
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DES-3028 DES-3028P DES-3028G DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch Loopback Detection Settings The Loopback Detection function is used to detect the loop created by a specific port. This feature is used to temporarily shutdown a port on the Switch when a CTP (Configuration Testing Protocol) packet has been looped back to the switch. When the Switch detects CTP, packets are received from a port it signifies a loop on the network. The Switch will automatically block the port and send an alert to the administrator. The Loopback Detection port will restart (change to discarding 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 pull-down menu. To view this window click L2 Features > Loopback Detection Settings. Parameter Description Figure 7- 46. Loopback Detection Settings window Loopdetect Status Mode Use the drop-down menu to enable or disable loopback detection. The default is Disabled. Displays the mode Port Based for the Loopback detection global settings. 130