Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-04-25
2006-04-25
Vu, Huy D. (Department: 2665)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S466000
Reexamination Certificate
active
07035261
ABSTRACT:
A high-speed routing search is realized by a hierarchical routing table, while a conventional network having a hierarchical network as a backbone performs conventional operations without being aware of the hierarchical backbone network, in a mixed environment of the hierarchical and non-hierarchical networks, by assigning the non-hierarchical network a virtual hierarchy number equivalent to a hierarchy number in the hierarchical network, attaching the virtual hierarchical number to a packet to be relayed at a router located at an entrance from the non-hierarchical network to the hierarchical network, performing hierarchical routing control by the virtual hierarchy number within the hierarchical network, and by removing the virtual hierarchy number from the packet to be relayed at a router located at an exit from the hierarchical network to the non-hierarchical network.
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Ogawa Jun
Saito Yuji
Katten Muchin & Rosenman LLP
Ryman Daniel
Vu Huy D.
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