Patents by Inventor David L. Cullerot
David L. Cullerot 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).
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Patent number: 8462794Abstract: Connection-oriented services for packet switched data communications networks are provided, including distributed MAC and protocol alias addresses discovery. Link state topology exchanges provide each switch with network topology graphs to determine paths from source to destination end systems. Broadcast frames are resolved to unicast frames to reduce broadcast traffic. Policy restrictions may be applied prior to connection setup. Connection management includes source-routed mapping of connections on the desired path. Distributed call rerouting is provided so switches receive topology change notifications and unmap failed link connections. Broadcast/unknown services provide non-resolvable packet restricted flooding. Connection-oriented switching is provided based on source and destination MAC addresses. Resolution of networks outside the switch domain is enabled by listening for network and server route advertisements and maintaining best routes to the networks and servers.Type: GrantFiled: March 23, 2010Date of Patent: June 11, 2013Assignee: Enterasys Networks, Inc.Inventors: Kurt Dobbins, Thomas A. Grant, David J. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Patent number: 8059798Abstract: Method and apparatus for ad hoc cooperative routing in an IP network. Included is an emergency stand alone (ESA) system that provides a bypass to a failed TDM switch for multiple communication devices in communication with one or more TDM switches. One or more internet protocol media gateways communicate a multicast signal upon the failure of a switch. The multicast initiates Voice over IP communication between endpoints, bypassing the failed switch.Type: GrantFiled: August 30, 2007Date of Patent: November 15, 2011Inventors: Michael A Skubisz, Edward F Holmes, Brian St. Pierre, David L Cullerot
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Patent number: 8023515Abstract: Connection-oriented services for packet switched data communications networks are provided, including distributed MAC and protocol alias addresses discovery. Link state topology exchanges provide each switch with network topology graphs to determine paths from source to destination end systems. Broadcast frames are resolved to unicast frames to reduce broadcast traffic. Policy restrictions may be applied prior to connection setup. Connection management includes source-routed mapping of connections on the desired path. Distributed call rerouting is provided so switches receive topology change notifications and unmap failed link connections. Broadcast/unknown services provide non-resolvable packet restricted flooding. Connection-oriented switching is provided based on source and destination MAC addresses. Resolution of networks outside the switch domain is enabled by listening for network and server route advertisements and maintaining best routes to the networks and servers.Type: GrantFiled: March 23, 2010Date of Patent: September 20, 2011Assignee: Enterasys Networks, Inc.Inventors: Kurt Dobbins, Thomas A. Grant, David J. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Patent number: 7990981Abstract: Connection-oriented services for packet switched data communications networks are provided, including distributed MAC and protocol alias addresses discovery. Link state topology exchanges provide each switch with network topology graphs to determine paths from source to destination end systems. Broadcast frames are resolved to unicast frames to reduce broadcast traffic. Policy restrictions may be applied prior to connection setup. Connection management includes source-routed mapping of connections on the desired path. Distributed call rerouting is provided so switches receive topology change notifications and unmap failed link connections. Broadcast/unknown services provide non-resolvable packet restricted flooding. Connection-oriented switching is provided based on source and destination MAC addresses. Resolution of networks outside the switch domain is enabled by listening for network and server route advertisements and maintaining best routes to the networks and servers.Type: GrantFiled: March 23, 2010Date of Patent: August 2, 2011Assignee: Enterasys Networks, Inc.Inventors: Kurt Dobbins, Thomas A. Grant, David J. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Publication number: 20100182934Abstract: Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path.Type: ApplicationFiled: March 23, 2010Publication date: July 22, 2010Applicant: ENTERASYS NETWORKS, INC.Inventors: Kurt Dobbins, Thomas A. Grant, David J. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Publication number: 20100177778Abstract: Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path.Type: ApplicationFiled: March 23, 2010Publication date: July 15, 2010Applicant: ENTERASYS NETWORKS, INC.Inventors: Kurt Dobbins, Thomas A. Grant, David J. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Patent number: 7720076Abstract: Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path.Type: GrantFiled: March 1, 2004Date of Patent: May 18, 2010Assignee: Enterasys, Inc.Inventors: Kurt Dobbins, Thomas A. Grant, David J. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Publication number: 20080319857Abstract: Content resources are managed. A request is received from a user for access to a source of content resources. It is determined that the user is authorized for access to the source. A portal Web page is generated based on a set of content element data applicable to the subscriber. The portal Web page is returned to the user. A system for use in managing content resources has a switch for receiving requests from Web browsers, a content resource management engine in communication with the switch, and a billing system in communication with the content resource management engine.Type: ApplicationFiled: May 2, 2008Publication date: December 25, 2008Applicant: ELLACOYA NETWORKS, INC.Inventors: Kurt A. Dobbins, Jason P. Poirier, Andre C. Boutin, Justin William Haddad, Stephen G. Delahunty, David L. Cullerot, Mark Thomas Sexton, Adam Michael Lederman, Wouter Johan Weiss, Christopher Lawrence Cheetham, David Ruffen
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Patent number: 7370364Abstract: Content resources are managed. A request is received from a user for access to a source of content resources. It is determined that the user is authorized for access to the source. A portal Web page is generated based on a set of content element data applicable to the subscriber. The portal Web page is returned to the user. A system for use in managing content resources has a switch for receiving requests from Web browsers, a content resource management engine in communication with the switch, and a billing system in communication with the content resource management engine.Type: GrantFiled: July 31, 2001Date of Patent: May 6, 2008Assignee: Ellacoya Networks, Inc.Inventors: Kurt A. Dobbins, Jason P. Poirier, Wouter Johan Weiss, Andre C. Boutin, Justin William Haddad, Stephen G. Delahunty, David L. Cullerot, Mark Thomas Sexton, Adam Michael Lederman, Christopher Lawrence Cheetham, David Ruffen
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Patent number: 6711171Abstract: Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path.Type: GrantFiled: October 19, 1998Date of Patent: March 23, 2004Assignee: Enterasys Networks, Inc.Inventors: Kurt Dobbins, Thomas A. Grant, David A. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Publication number: 20020066033Abstract: Content resources are managed. A request is received from a user for access to a source of content resources. It is determined that the user is authorized for access to the source. A portal Web page is generated based on a set of content element data applicable to the subscriber. The portal Web page is returned to the user. A system for use in managing content resources has a switch for receiving requests from Web browsers, a content resource management engine in communication with the switch, and a billing system in communication with the content resource management engine.Type: ApplicationFiled: July 31, 2001Publication date: May 30, 2002Inventors: Kurt A. Dobbins, Jason P. Poirier, Wouter Johan Weiss, Andre C. Boutin, Justin William Haddad, Stephen G. Delahunty, David L. Cullerot, Mark Thomas Sexton, Adam Michael Lederman, Christopher Lawrence Cheetham, David Ruffen
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Publication number: 20020029288Abstract: Apparatus and method wherein multiple router interfaces are assigned the same IP network address, creating an IP work group. This enhances host mobility by allowing, in one embodiment, a host to be relocated anywhere in the work group without requiring reconfiguration of the host. As a further option, host address ranges may be specified (i.e., locked) to designated interfaces of the work group, to enhance security by restricting the allowed host mobility within the work group. An additional advantage is a reduced consumption of network and subnet addresses, because now a single address is used for several physical networks.Type: ApplicationFiled: June 15, 2001Publication date: March 7, 2002Inventors: Kurt A. Dobbins, David L. Cullerot, Stephen H. Negus, William T. Haggerty
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Patent number: 6249820Abstract: Apparatus and method wherein multiple router interfaces are assigned the same IP network address, creating an IP work group. This enhances host mobility by allowing, in one embodiment, a host to be relocated anywhere in the work group without requiring reconfiguration of the host. As a further option, host address ranges may be specified (i.e., locked) to designated interfaces of the work group, to enhance security by restricting the allowed host mobility within the work group. An additional advantage is a reduced consumption of network and subnet addresses, because now a single address is used for several physical networks.Type: GrantFiled: May 6, 1998Date of Patent: June 19, 2001Assignee: Cabletron Systems, Inc.Inventors: Kurt A. Dobbins, David L. Cullerot, Stephen H. Negus, William T. Haggerty
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Patent number: 5825772Abstract: Method and apparatus providing connection-oriented services for packet switched data communications networks. Directory services include distributed discovery of MAC addresses and protocol alias addresses. Topology services include a link state topology exchange among switches, which provides each switch with a complete topology graph of the network. This enables an access switch receiving a data packet to determine a complete path from a source end system to a destination end system. Another service includes resolution of broadcast frames to unicast frames, in order to reduce the amount of broadcast traffic. Policy restrictions may be applied prior to connection setup. Path determination services enable multiple paths from a source to a destination. Connection management includes source routed mapping of connections on the desired path.Type: GrantFiled: April 2, 1996Date of Patent: October 20, 1998Assignee: Cabletron Systems, Inc.Inventors: Kurt Dobbins, Thomas A. Grant, David J. Ruffen, Laura Kane, Theodore Len, Philip Andlauer, David H. Bahi, Kevin Yohe, Brendan Fee, Chris Oliver, David L. Cullerot, Michael Skubisz
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Patent number: 5751971Abstract: Apparatus and method wherein multiple router interfaces are assigned the same IP network address, creating an IP work group. This enhances host mobility by allowing, in one embodiment, a host to be relocated anywhere in the work group without requiring reconfiguration of the host. As a further option, host address ranges may be specified (i.e., locked) to designated interfaces of the work group, to enhance security by restricting the allowed host mobility within the work group. An additional advantage is a reduced consumption of network and subnet addresses, because now a single address is used for several physical networks.Type: GrantFiled: July 12, 1995Date of Patent: May 12, 1998Assignee: Cabletron Systems, Inc.Inventors: Kurt A. Dobbins, David L. Cullerot, Stephen H. Negus, William T. Haggerty