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4 Configuration D-Link Smart Managed Switch User Manual
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Figure 4.44 – L2 Functions > Loopback Detection
Loopback Detection: Use the drop-down menu to enable or disable loopback detection. The default is
Disabled.
Mode: Specifies Port-based or VLAN-based mode. If port-based mode is selected, the loop happening port
will be shut down and affect all member VLANs. If VLAN-based mode is selected, only the member port in
the loop happening VLAN will be shut down.
VID List: Specifies the VID.
Interval (1-32767): Set a Loop detection Interval between 1 and 32767 seconds. The default is 2 seconds.
Recover Time (0 or 60-1000000): Time allowed (in seconds) for recovery when a Loopback is detected.
The Loop Detection Recover Time can be set at 0 seconds, or 60 to 1000000 seconds. Entering 0 will
disable the Loop Detection Recover Time. The default is 60 seconds.
From Port: The beginning of a consecutive group of ports may be configured starting with the selected port.
To Port: The ending of a consecutive group of ports may be configured starting with the selected port.
State: Use the drop-down menu to toggle between Enabled and Disabled. Default is Disabled.
Click Apply to implement changes made or click Refresh to refresh the Loopback Detection table.
L2 Functions > MAC Address Table > Static MAC
This feature provides two distinct functions. The MAC Address Learning table allows turning off the function
of learning MAC address automatically, if a port isn't specified as an uplink port (for example, connects to a
DHCP Server or Gateway). By default, this feature is disabled.
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