Method of merging networks across a common backbone network
Patent 5313465 Issued on May 17, 1994. Estimated Expiration Date: 
May 13, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 13, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for bridging local area networks Communication system, a station to be used in such a system, and a gate connecting element to be used in such a system, as well as a device comprising such a gate connecting element Method and apparatus for routing communications among computer networks Network transit prevention Patent #: 5134610 InventorsAssigneeApplicationNo. 882510 filed on 05/13/1992US Classes:370/254, NETWORK CONFIGURATION DETERMINATION370/403, At least one bus is a ring network370/466Converting between protocolsExaminersPrimary: Olms, Douglas W.Assistant: Blum, Russell W. Attorney, Agent or FirmInternational ClassH04J 003/02AbstractA method of merging networks across a common backbone network in which destinations are grouped into domains based on needs of network users to communicate with one another. Domain information is added to the level one routing control packets transmitted by the grouped destinations to identify the logical address (destination number coupled with domain number) of a specific destination. Additionally, routers in the network are configured with mapping information that relates the destination number of each associated destination with its logical address. Filtering information may be included in the configuration of the level one and level two routers. Filtering information identifies domains that associated destinations may transmit information to or receive information from. With filtering information, system routers can be configured to announce the reachability of specific destinations in selected domains based on overall system considerations.Other References
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