Patents by Inventor Kirk A. Preiss

Kirk A. Preiss 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).

  • Source routing transparent bridge
    Patent number: 5280480
    Abstract: A bridged communications network includes source routing transparent (SRT) bridges which forward frames that are structured in accordance with a source routing architecture and frames that are structured in accordance with a transparent bridging architecture. Each SRT bridge examines a received frame to determine its type. If the frame is a bridge protocol data unit (BPDU) frame, it is used to set the bridge in a forwarding or blocking state. Any non-BPDU which carries a routing information indicator (RII) bit set to a logical "1" are processed by a source routing function device which is provided in the SRT bridge. If the RII bit is set to logical "0", the frame is processed by a transparent bridge function device which is also provided in the SRT bridge.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: January 18, 1994
    Assignee: International Business Machines Corporation
    Inventors: Daniel A. Pitt, Kirk A. Preiss