![]() Note: In this example, Port GE14 is chosen. Under the Loopback Detection Port Setting Table, click on the radio button of the port that you want to configure then click Edit. To save the configuration permanently, go to the Copy/Save Configuration page or click the icon at the upper portion of the page. This would set the time interval in seconds between LBD packets. Enter a value in the Detection Interval field. Check the Enable check box for Loopback Detection. Log in to the switch web-based utility and choose Port Management > Loopback Detection Settings. This article aims to show how to enable Loopback Detection on the Cisco 220 Series Smart Plus Switches. Port is in STP Forwarding or Disabled state.The following conditions must be set in order for LBD to be active on a specified port:.Network administrators can define a Detection Interval that sets the time interval between LBD packets. After a loop is discovered, the port that received the loops is placed in the Shut Down state. ![]() LBD operates independently of Spanning Tree Protocol (STP). When the switch sends out a loop protocol packet and then receives the same packet, it shuts down the port that received the packet. ![]() Loopback Detection (LBD) is a feature on the switch that provides protection against loops by transmitting loop protocol packets out of ports where loop protection has been enabled.
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