An LBDT-enabled interface periodically sends LBDT packets to detect loops. After a loop is detected, an action configured by the loopback-detect action command is taken on the interface. In addition, the system counts the time. After the configured recovery time expires, the system attempts to restore the problematic interface. If the device does not receive detection packets from the problematic interface within the next recovery time, it considers that the loop is eliminated on the interface and restores the interface.
The system view is displayed.
The interface view is displayed.
The interface recovery time after a loop is removed is set.
By default, the interface recovery time is three times the interval for sending LBDT packets.
It is recommended that the interface recovery time be three times the packet sending interval at least. If the packet sending interval has been set to a small value, the interface recovery time should be at least 10 seconds longer than the packet sending interval.