Port Management
Loopback Detection
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x 113
9
Configuring LBD Workflow
To enable and configure LBD:
STEP 1 Enable Loopback Detection system-wide in the Loopback Detection Settings 
page.
STEP  2 Enable Loopback Detection on access ports in the Loopback Detection Settings 
page.
STEP  3 Enable Auto-Recovery for Loopback Detection in the Error Recovery Settings 
page. 
To configure Loopback Detection:
STEP 1 Click Port Management > Loopback Detection Settings.
STEP  2 Select Enable in the Loopback Detection global field to enable the feature.
STEP  3 Enter the Detection Interval. This is the interval between transmissions of LBD 
packets.
STEP  4 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.
STEP  5 Select whether to enable LBD on ports or LAGS in the Interface Type equals field.
STEP  6 Select the ports or LAGs on which LBD is to be enabled and click Edit.
STEP  7 Select Enable in the Loopback Detection State field for the port or LAG selected.
STEP  8 Click Apply to save the configuration to the Running Configuration file.