Multiplex communications – Network configuration determination – In a bus system
Reexamination Certificate
2006-10-02
2011-10-04
Ryman, Daniel J (Department: 2466)
Multiplex communications
Network configuration determination
In a bus system
C370S395530, C370S403000, C370S404000, C370S405000, C370S406000, C370S424000, C370S429000, C370S469000
Reexamination Certificate
active
08031640
ABSTRACT:
A packet transmission system enabling VLAN packet forwarding of the MAC layer at the RPR layer. An address translation table associates with a VLAN identifier a MAC address and a flag showing validity of the VLAN identifier. A flag set valid means that an own node belongs to a VLAN domain with the VLAN identifier. In a case where a received packet is a VLAN packet, a first node searches the address translation table based on the VLAN identifier for a MAC address, creates an RPR packet with the MAC address stored as an RPR destination address, and transmits the RPR packet to an RPR network. A second node searches the address translation table based on the MAC address stored in the RPR packet, and if a corresponding flag is a valid flag, regards the packet as being addressed to a VLAN to which the own node belongs, and transmits the packet to the VLAN after deleting the RPR header therefrom.
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Japanese Office Action dated Jul. 19, 2011, from corresponding Japanese Application No. 2006-133183.
Fujitsu Limited
Katten Muchin & Rosenman LLP
Lee Jae Y
Ryman Daniel J
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