Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2009-10-09
2011-11-22
Levitan, Dmitry H (Department: 2461)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
Reexamination Certificate
active
08064466
ABSTRACT:
A method of specifying an input edge router has: obtaining a first value of an input packet counter from each of input candidate edge routers having possibility to receive a specified packet passing through a specified area; transmitting a test packet having a destination address of an output edge router supplying the specified packet or a test packet having a destination address of the specified packet, to a source router connected to a network indicated by a source address of the specified packet; obtaining a second value of the input packet counter from each of the input candidate edge routers; calculating a difference between the first and second values in each input candidate edge router; and specifying an input edge router through which the specified packet passes according to the difference.
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Fujitsu Limited
Katten Muchin & Rosenman LLP
Levitan Dmitry H
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