Abstract: A network device for managing data flow can have a data port configured to receive data, a plurality of pointers for pointing to the data received, and a queue for queuing the plurality of pointers. The queue can be configured to have at least one dynamic threshold therein. Furthermore, the network device can have a control module configured to adjust the at least one dynamic threshold with respect to the data flow.

Abstract: A network device for managing data flow can have at least one receiving port configured to receive data, a first counter configured to monitor at least one pointer, and a second counter configured to record the at least one pointer to correspond to the at least one receiving port therein when the data is a plural cast data, and the plural cast data is received in the at least one receiving port. In addition, the network device can include a control module configured to at least monitor the second counter with respect to the data flow of the network device.