The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 2008
Filed:
Jan. 14, 2005
Takashi Sumiyoshi, Kokubunji, JP;
Takashi Sumiyoshi, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A routing/switching processing unit rewrites the inbound multicast address or the source address and the destination multicast address of the inbound flow identifier of a received packet and forwards the received packet to only output ports corresponding to a resulting outbound multicast address or flow identifier. A conversion table stores first multicast addresses or flow identifiers designated by transmission sources, second multicast addresses or flow identifiers to be used for forwarding to users data transmitted from the transmission sources, and signal port IDs of signal ports to which the users are connected. A multicast packet processing unit converts the first multicast address or flow identifier of a received multicast packet to a second multicast packet or flow identifier by referring to the conversion table, and forwards the address-converted packet to network interfaces having signal ports corresponding to the second multicast packet or flow identifier.