The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2006
Filed:
Feb. 13, 2002
Jun Ogawa, Kawasaki, JP;
Yuji Saito, Kawasaki, JP;
Jun Ogawa, Kawasaki, JP;
Yuji Saito, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
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.