Patents by Inventor Michael Birenback

Michael Birenback 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).

  • Method of managing and using multiple virtual private networks in a router with a single routing table
    Patent number: 6594704
    Abstract: A method of maintaining multiple routing tables within a global table of a network router including the steps of providing the router with a route table generator to maintain the global table, and a forwarding engine to perform table lookups, the performing of table lookups in one of the multiple routing tables of the global table using a key, the key representing an index into the one of said multiple routing tables within said global table, the key created by combining a virtual private network identification (VPN ID) and an address prefix, and maintaining a plurality of table entries in the global table by using the key as a pointer to one of said table entries.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: July 15, 2003
    Assignee: Quarry Technologies
    Inventors: Michael Birenback, Mark Duffy, Sanjay Krishnan