Configuring Loopback Detection - Cisco 500 Series Administration Manual

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• Generates an appropriate SYLOG message.

Configuring Loopback Detection

Default Settings and Configuration
Loopback detection is not enabled by default.
Interactions with Other Features
If STP is enabled on a port on which Loopback Detection is enabled, the port must
be in STP forwarding state.
Configuring LBD Workflow
To enable and configure LBD:
Enable Loopback Detection system-wide in the Loopback Detection Settings
page.
Enable Loopback Detection on access ports in the Loopback Detection Settings
page.
Enable Auto-Recovery for Loopback Detection in the Error Recovery Settings
page.
To configure Loopback Detection:
Click Port Management > Loopback Detection Settings.
Select Enable in the Loopback Detection global field to enable the feature.
Enter the Detection Interval. This is the interval between transmission of LBD
packets.
Click Apply to save the configuration to the Running Configuration file.
The following fields are displayed for each interface, regarding the Loopback
Detection State:
• Administrative—Loopback detection is enabled.
• Operational—Loopback detection is enabled but not active on the
interface.
Cisco 500 Series Stackable Managed Switch Administration Guide
Port Management
Loopback Detection