Patents by Inventor Richard H. Crump

Richard H. Crump has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Central control of multiple address domains within a router
    Patent number: 7533183
    Abstract: A domain manager of a router uses a mapping array that includes pointers to associate interfaces of the router with routing tables. The domain manager executes a single IP stack to receive packets from a plurality of address domains through the interfaces, and identify routing tables according to the mapping array. The mapping array associates interfaces connecting to the same address domain with the same routing table. Information in each of the routing tables is updated independently of other routing tables.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: May 12, 2009
    Assignee: Nortel Networks Limited
    Inventors: Richard H. Crump, Janet Y. Doong
  • Information routing system and apparatus
    Patent number: 6999454
    Abstract: An information routing system and apparatus includes separate control and forwarding planes. The control plane is split into box management control functions and routing control functions. The box management control functions are isolated to a single processing card, while the routing control functions are distributed across multiple processing cards. The routing table is also distributed across multiple processing cards. The multiple processing cards are interconnected via a high-speed backplane bus for control plane traffic and by a fabric for forwarding plane traffic.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: February 14, 2006
    Assignee: Nortel Networks Limited
    Inventor: Richard H. Crump