| 摘要 |
Provided is an apparatus for filtering a multicast port identifier, the apparatus including: a processor to receive an Internet Group Management Protocol (IGMP) message from a switching unit, to verify a traffic reception request received from a subscriber terminal based on the IGMP message, and to store a value in a filtering register based on the traffic reception request; and an Optical Network Unit (ONU) Media Access Control (MAC) manager to filter a packet to be forwarded to the subscriber terminal, using a port identifier for traffic forwarding and reception with the subscriber terminal, and using the value of the filtering register indicating an existence of traffic to be forwarded to the subscriber terminal.
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