Packet routing apparatus and a method of communicating a packet

Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...

Reexamination Certificate

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C370S392000

Reexamination Certificate

active

07639604

ABSTRACT:
When any communication port receives a packet from a network, it transmits the packet to a relay processing section. The relay processing section identifies a relay processing section of a transfer destination according to destination information included in the packet to transmit the packet to a packet switch section. When the relay processing section of the transfer destination is a working relay processing section, the packet switch section transfers the packet to the working relay processing section and a protection relay processing section.

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J. Manchester, “IP Over Sonet”, IEEE Communications Magazine, May 1998, pp. 136-142.

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