Note: Loopback detection will not be active if Spanning Tree is disabled on the
switch.
Note:
When configured for manual release mode, then a link down/up event will
not release the port from the discarding state.
Parameters
These parameters are displayed:
◆
Interface – Displays a list of ports or trunks.
◆
Status – Enables loopback detection on this interface. (Default: Enabled)
◆
Trap – Enables SNMP trap notification for loopback events on this interface.
(Default: Disabled)
◆
Release Mode – Configures the interface for automatic or manual loopback
release. (Default: Auto)
◆
Release – Allows an interface to be manually released from discard mode. This
is only available if the interface is configured for manual release mode.
◆
Action – Sets the response for loopback detection to block user traffic or shut
down the interface. (Default: Block)
◆
Shutdown Interval – The duration to shut down the interface.
(Range: 60-86400 seconds; Default: 60 seconds)
If an interface is shut down due to a detected loopback, and the release mode
is set to “Auto,” the selected interface will be automatically enabled when the
shutdown interval has expired.
If an interface is shut down due to a detected loopback, and the release mode
is set to “Manual,” the interface can be re-enabled using the Release button.
Web Interface
To configure loopback detection:
1.
Click Spanning Tree, Loopback Detection.
2.
Click Port or Trunk to display the required interface type.
3.
Modify the required loopback detection attributes.
4.
Click Apply
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