The storm control function was configured, and a broadcast storm occurred on the interface. As a result, the interface status became Error-Down.
The storm control function was configured on the interface, and the storm control action was set to error-down. A broadcast storm occurred due to a loop, attack, or hardware fault, and the average rate of broadcast, multicast, or unknown unicast packets exceeded the upper threshold. As a result, the storm control action was performed and the interface status became Error-Down.