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. 24, 1999
Filed:
Oct. 15, 1998
Roy F Brabson, Raleight, NC (US);
John L Klonowski, Hillsborough, NC (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
Multiple virtual routing networks having the same identifier are defined on a shared access transport facility network. Virtual connections are defined from some or all of the network nodes to at least one of the virtual routing networks. A virtual connection contains a medium address for the node to which it is connected. When a route is calculated between a source node and a destination node, the identical identifier representing different virtual routing networks may appear in the calculated route. If it does, all portions of the route after the first occurrence up to and including the last occurrence of the identifier in the calculated route is deleted to achieve the optimal route. A destination node address is obtained from storage that is associated with the virtual connection to the destination node and information can then be directly routed to the destination node address via the calculated route in an efficient manner.