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:
Aug. 08, 2000
Filed:
Sep. 10, 1997
Minoru Sekine, Tokyo, JP;
Akihiko Akitaya, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
The object of the present invention is to accommodate physical segments of LANs into a switching hub substituting them for virtual LANs without modifying software of terminals or setting of the terminal and provide a routing function of the third layer without deteriorating the degree of freedom in virtual LAN setting of the switching hub. The internetworking router of the present invention includes LAN controlling means 1, packet memory 2, bridge processing means 3, table memory 4, routing processing means 5, table memory 6, free buffer queue 7, reception buffer queue 8 and transmission buffer queue 9 between LAN controlling means 1 and bridge processing means 3, and reception buffer queue 10 and transmission buffer queue 11 between bridge processing means 3 and routing processing means 5. Table memory 4 includes bridge group table 41 and address learning tables 42.sub.1 to 42.sub.n. Table memory 6 includes routing table 61 and ARP table 62.