LevelOne GEL-1061 User Manual page 168

Chapter 7
| Spanning Tree Algorithm
Configuring Loopback Detection
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 shut down the interface.
(Default: Shutdown)
◆
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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