Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-01-26
2010-12-07
Ryman, Daniel J (Department: 2466)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S222000, C370S390000
Reexamination Certificate
active
07848340
ABSTRACT:
A packet ring network system is disclosed which enables plurality of packet rings to perform packet transfer via a plurality of links while preventing multiple reception of packets and broadcast stream in a normal state where no failure has occurred. The packet ring network system includes a first packet ring and a second packet ring, each packet ring having a plurality of inter-ring connecting nodes, and each of the plurality of inter-ring connecting nodes in the first packet ring is connected with each of the plurality of inter-ring connecting nodes in the second packet ring in a one to one relationship so that the packet rings are connected with each other. When one of the inter-ring connecting nodes receives a packet to be broadcasted via a link connecting the first and second packet rings the node performs bidirectional flooding of the broadcast packet such that the packet arrives at a predetermined cleave point, and the node uses the source address of the other node so as to falsify the source.
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IEEE Std 802.17-2004 “Part17; RPR Access Method and Physical. Layer Specifications”, “9. Frame format” pp. 211-225.
IEEE802.17(Draft3.3), 2004, p. 117, p. 60, p. 190.
Ogasahara Daisaku
Sakauchi Masahiro
Takagi Kazuo
NEC Corporation
Pham Tito
Ryman Daniel J
Sughrue & Mion, PLLC
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