D-Link DGS-1250 Series Reference Manual page 105

DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide
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 drop-down menu.
To view the following window, click L2 Features > Loopback Detection, as shown below:
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
Click the Apply button to accept the changes made.
The fields that can be configured in Loopback Detection Port Settings are described below:
Parameter
From Port - To Port
State
Click the Apply button to accept the changes made.
Figure 5-40 Loopback Detection Window
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.
Description
Select the appropriate port range used for the configuration here.
Select this option to enable or disable the state of the port.
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