Patents by Inventor Jeffrey D. Haag

Jeffrey D. Haag 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).

  • Retransmit timeout suppression in large scale networks
    Patent number: 7848227
    Abstract: A method, apparatus, and network communication node for suppressing transmission of a request packet, in the context of a request-response network protocol, if a packet in response to a currently pending request packet is present in an input process queue in a network communication node are presented. One embodiment of the present invention provides this capability by pre-processing an incoming packet to determine whether the packet is designated as being in response to a pending request.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: December 7, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Jeffrey D. Haag, Craig J. Fox
  • Access device-based fragmentation and interleaving support for tunneled communication sessions
    Patent number: 7761508
    Abstract: Link fragmentation and interleaving at an access device located between a point to point link and a tunneled connection is provided. A method of access device-based link fragmentation and interleaving is also provided. The method includes receiving frames through a tunnel from a network server, fragmenting at least some of the frames from the network server, and sending fragmented and unfragmented frames over a data link to an endpoint device. The frames may be multilink point to point protocol (MLPPP) frames and the frames may be received through a layer two tunneling protocol (L2TP) tunnel. The method can include scanning a frame for PPP options and removing options related to MLPPP negotiation and then forwarding the frame to a network server.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: July 20, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: John Evans, William Mark Townsley, Gary Lee Harris, Jeffrey D. Haag, John D. Bray
  • Method and system for stateful switch-over in a high-availability point to point system
    Patent number: 7363534
    Abstract: A method and system for stateful switch-over in a high-availability point to point system is disclosed. The disclosed method includes in one embodiment detecting a change in state of a point to point link between a first peer data processing system and a second peer data processing system; storing state data for the point to point link with an active processor within the first peer data processing system in response to detecting the change in state; and transferring a copy of the state data to a standby processor within the first peer data processing system. The disclosed method includes in another embodiment, transferring data between the first peer data processing system and the second peer data processing system utilizing the active processor; detecting a switch-over condition; and transferring data between the first peer data processing system and the second peer data processing system utilizing the standby processor in response to detecting the switch-over condition.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 22, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Ramesh Krishnamurthy, Jeffrey D. Haag