Hitachi, Ltd.

Shigeki Yoshino

Hidemitsu Higuchi

Yukihide Inagaki

Yoshitaka Sainomoto

Naoya Ikeda

Tatsuya Watanuki

A packet routing apparatus has a plurality of routing units, connected by a first connecting mechanism. The plurality of routing units comprise a first routing unit, connected to at least one port, and a second routing unit, connected to an extended function processor. The first routing unit transmits a packet, received from the port, to another first routing unit and/or a second routing unit. The second routing unit transmits the packet, received from the first connecting mechanism, to the extended function processor.

Packet routing apparatus

A routing apparatus includes a plurality of routing units and function units. The routing unit receives a packet from each port, and uses header information contained in the packet to judge whether the packet should be transmitted to the function unit. In the case where the packet should be transmitted to the function unit, the routing unit adds a first identifier to the packet and transmits it to a transmission unit. The function unit receives the packet containing the first identifier from the transmission unit, and executes a predetermined processing for the packet. The function unit adds a second identifier to the packet and transmits it to the transmission unit.

Packet routing apparatus and method of efficiently routing packets among network equipment

There is provided a packet routing apparatus for performing an IP additional function processing for a packet in the middle of a packet routing processing without damaging the high speed characteristic of the packet routing processing. A unique address is determined for each of function acceleratorstoin the inside of an extended function modulethe unique address is added to a packet by a physical address lookup unitand a data distribution unitdistributes the packet to the function accelerator corresponding to the unique address.

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Hadano, Japan

Shigeki Yoshino