The Method and Apparatus of Multicast Port Identifier Filtering in Gigabit-capable Passive Optical Network

The present invention receives an IGMP message from a switching unit, identify the traffic receiving a request from a subscriber terminal on the basis of the IGMP message, the processor to write a value to a filter register in accordance with the traffic received request, and with the subscriber terminal port identifier and proposed a multicast port identifier filtering apparatus including an ONU MAC management unit for filtering the packet to be transmitted to the subscriber terminal by using a value of said filter register indicating the existence of the traffic to be forwarded to the subscriber station for the traffic transmission and reception do. Gigabit passive optical network, multicast port identifier, filtered