Patents by Inventor Richard J. Hausman

Richard J. Hausman 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).

  • Patent number: 6298061
    Abstract: A port aggregation protocol (PAGP) dynamically aggregates redundant links between two neighboring devices in a computer network through the exchange of aggregation protocol data unit (AGPDU) frames between the two devices. Each AGPDU frame contains a unique identifier corresponding to the device sourcing the frame and a port number corresponding to the port through which the frame is forwarded. The exchange of AGPDU frames and the information contained therein allows the neighboring devices to identify those ports corresponding to the redundant links. Each device then dynamically aggregates its ports corresponding to the redundant links into a logical aggregation port (agport) which appears as a single, high-bandwidth port or interface to other processes executing on the device.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: October 2, 2001
    Assignee: Cisco Technology, Inc.
    Inventors: Hon Wah Chin, Michael Fine, Norman W. Finn, Richard J. Hausman
  • Patent number: 6163543
    Abstract: A port aggregation protocol (PAGP) dynamically aggregates redundant links between two neighboring devices in a computer network through the exchange of aggregation protocol data unit (AGPDU) frames between the two devices. Each AGPDU frame contains a unique identifier corresponding to the device sourcing the frame and a port number corresponding to the port through which the frame is forwarded. The exchange of AGPDU frames and the information contained therein allows the neighboring devices to identify those ports corresponding to the redundant links. Each device then dynamically aggregates its ports corresponding to the redundant links into a logical aggregation port (agport) which appears as a single, high-bandwidth port or interface to other processes executing on the device.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: December 19, 2000
    Assignee: Cisco Technology, Inc.
    Inventors: Hon Wah Chin, Michael Fine, Norman W. Finn, Richard J. Hausman
  • Patent number: 5959968
    Abstract: A port aggregation protocol (PAGP) dynamically aggregates redundant links between two neighboring devices in a computer network through the exchange of aggregation protocol data unit (AGPDU) frames between the two devices. Each AGPDU frame contains a unique identifier corresponding to the device sourcing the frame and a port number corresponding to the port through which the frame is forwarded. The exchange of AGPDU frames and the information contained therein allows the neighboring devices to identify those ports corresponding to the redundant links. Each device then dynamically aggregates its ports corresponding to the redundant links into a logical aggregation port (agport) which appears as a single, high-bandwidth port or interface to other processes executing on the device.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: September 28, 1999
    Assignee: Cisco Systems, Inc.
    Inventors: Hon Wah Chin, Michael Fine, Norman W. Finn, Richard J. Hausman
  • Patent number: 5737635
    Abstract: A variable latency cut through bridge (210) for selectively forwarding data packets (10) within a network (310) of computers (312), the variable latency cut through bridge (210) employing a variable latency bridging method wherein the latency factor of the variable latency cut through bridge (210) is set according to the position of a variable threshold point (428). The variable threshold point (428) is optionally set to within a rapid drop off portion (520) of a probability line (514) describing the probability that the data packet (10) is bad as a function of the amount of the packet (10) which has been examined within the variable latency cut through bridge (210).
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: April 7, 1998
    Assignee: Cisco Technology, Inc.
    Inventors: Bernard N. Daines, Lazar Birenbaum, Richard J. Hausman
  • Patent number: 5473607
    Abstract: An improved partial packet filter (10) for filtering data packets (210) in a computer network (12) wherein a candidate field (413) of the data packet (210) is hashed to a plurality of bit-wise subsets (636) each being an independent representation of the candidate field (413). Each of the bit-wise subsets (636) is compared to a reference hash table (644) which has been prepared in a preliminary operation series (514). The preliminary operation series (512) configures a plurality of target fields (714) to set selected memory locations (312) in the reference hash table (644).
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: December 5, 1995
    Assignee: Grand Junction Networks, Inc.
    Inventors: Richard J. Hausman, Lazar Birenbaum