Packet transfer device, semiconductor device, and packet...

Details Packet transfer device, semiconductor device, and packet... Packet transfer device, semiconductor device, and packet...

2006-12-26

2006-12-26

Pham, Chi (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S401000, C370S419000, C370S469000, C370S474000

Reexamination Certificate

active

07154890

ABSTRACT:
A packet transfer device has a layer 2 switch and performs switching by referring to header information of a 3rd layer and higher layers. Input/output ports receives packets from and transmits packets to other devices connected to the packet transfer device. A header information extracting circuit extracts header information belonging to a 3rd layer (network layer) and higher layers of a network protocol from packets inputted from the respective input/output ports. A table stores header information and control information corresponding to the header information in association with each other. A control information acquiring circuit acquires control information corresponding to the header information extracted by the header information extracting circuit from the table. A processing circuit processes packets based on the control information acquired by the control information acquiring circuit.

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“Advice for Using Multilayer Switching,” Computer & Network LAN, Ohmsha, vol. 17, No. 6, Jun. 1999, pp. 2-6.
Japanese Office Action dated Jun. 6, 2006 of Application No. JP 2001-310116.

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