Patents by Inventor Lawrence Kreeger
Lawrence Kreeger 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: 8948054Abstract: An example method is provided and may include multicasting a discovery packet in an overlay network, which includes a Layer 2 scheme over a Layer 3 network; and identifying endpoints based on their respective responses to the discovery packet, where the endpoints are coupled across a multicast backbone. In more specific embodiments, the method may include identifying disconnected endpoints in the overlay network based on a lack of responses from the disconnected endpoints.Type: GrantFiled: December 30, 2011Date of Patent: February 3, 2015Assignee: Cisco Technology, Inc.Inventors: Lawrence Kreeger, Suraj Nellikar, Sudarshana Kandachar Sridhara Rao, Udayakumar Srinivasan, Anuraag Mittal, Lilian Sylvia Fernandes
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Patent number: 8676980Abstract: In one embodiment, a method includes receiving a request packet at a flow director in communication with a plurality of servers, each server comprising a virtual load balancer module and one or more virtual machines and forwarding the request packet to one of the virtual load balancer modules at one of the servers. The virtual load balancer module is configured to select one of the virtual machines to receive the request packet and transmit a response packet. The response packet is transmitted without passing through the flow director. An apparatus for load balancing in a virtual machine environment is also disclosed.Type: GrantFiled: March 22, 2011Date of Patent: March 18, 2014Assignee: Cisco Technology, Inc.Inventors: Lawrence Kreeger, Elango Ganesan, Michael Freed, Geetha Dabir
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Patent number: 8532099Abstract: Increased usage of network links is provided and smaller forwarding tables are required. A combination of STP and Multipath methods may be implemented in a network. Frames may be forwarded between switches not only according to MAC addresses, but also according to switch IDs and local IDs. Switch IDs do not need to be globally unique, but should be unique within a particular network. Local IDs need only be unique within a particular switch. Some preferred implementations allow frames to be delivered in order to devices requiring in-order delivery. Preferably, core switches need only learn the switch IDs of each core switch and each edge switch, and the appropriate exit port(s) corresponding to each switch. Preferably, the forwarding tables of each edge switch indicate the addresses of each device attached to that edge switch, the address of each device that is in communication with an attached device and the address of every other switch in the network.Type: GrantFiled: September 17, 2010Date of Patent: September 10, 2013Assignee: Cisco Technology, Inc.Inventors: Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Silvano Gai
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Patent number: 8531991Abstract: A solution is provided wherein the interfaces between multiple chassis (e.g., edge switches) in a network of layer 2 devices and a spanning tree device are treated as a single emulated switch. This emulated switch effectively enables two different views to the two different sides. Thus, frames from the network of layer 2 switches destined to any port of the emulated switch may take any of the links (through any of the physical switches), thereby enabling effective load-balancing for frames traveling from the layer 2 network side into the spanning tree device. Meanwhile the spanning tree device does not recognize an illegal loop in its connection to two different edge switches as it views the two links as a single logical EtherChannel.Type: GrantFiled: October 16, 2006Date of Patent: September 10, 2013Assignee: Cisco Technology, Inc.Inventors: Sanjay Sane, Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Soei-Shin Hang, Ramana Mellacheruvu
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Publication number: 20130170490Abstract: An example method is provided and may include multicasting a discovery packet in an overlay network, which includes a Layer 2 scheme over a Layer 3 network; and identifying endpoints based on their respective responses to the discovery packet, where the endpoints are coupled across a multicast backbone. In more specific embodiments, the method may include identifying disconnected endpoints in the overlay network based on a lack of responses from the disconnected endpoints.Type: ApplicationFiled: December 30, 2011Publication date: July 4, 2013Inventors: Lawrence Kreeger, Suraj Nellikar, Sudarshana Kandachar Sridhara Rao, Udayakumar Srinivasan, Anuraag Mittal, Lilian Sylvia Fernandes
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Publication number: 20120246637Abstract: In one embodiment, a method includes receiving a request packet at a flow director in communication with a plurality of servers, each server comprising a virtual load balancer module and one or more virtual machines and forwarding the request packet to one of the virtual load balancer modules at one of the servers. The virtual load balancer module is configured to select one of the virtual machines to receive the request packet and transmit a response packet. The response packet is transmitted without passing through the flow director. An apparatus for load balancing in a virtual machine environment is also disclosed.Type: ApplicationFiled: March 22, 2011Publication date: September 27, 2012Applicant: Cisco Technology, Inc.Inventors: Lawrence Kreeger, Elango Ganesan, Michael Freed, Geetha Dabir
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Publication number: 20110007741Abstract: Increased usage of network links is provided and smaller forwarding tables are required. A combination of STP and Multipath methods may be implemented in a network. Frames may be forwarded between switches not only according to MAC addresses, but also according to switch IDs and local IDs. Switch IDs do not need to be globally unique, but should be unique within a particular network. Local IDs need only be unique within a particular switch. Some preferred implementations allow frames to be delivered in order to devices requiring in-order delivery. Preferably, core switches need only learn the switch IDs of each core switch and each edge switch, and the appropriate exit port(s) corresponding to each switch. Preferably, the forwarding tables of each edge switch indicate the addresses of each device attached to that edge switch, the address of each device that is in communication with an attached device and the address of every other switch in the network.Type: ApplicationFiled: September 17, 2010Publication date: January 13, 2011Applicant: CISCO TECHNOLOGY, INC.Inventors: Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Silvano Gai
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Patent number: 7801125Abstract: Increased usage of network links is provided and smaller forwarding tables are required. A combination of STP and Multipath methods may be implemented in a network. Frames may be forwarded between switches not only according to MAC addresses, but also according to switch IDs and local IDs. Switch IDs do not need to be globally unique, but should be unique within a particular network. Local IDs need only be unique within a particular switch. Some preferred implementations allow frames to be delivered in order to devices requiring in-order delivery. Preferably, core switches need only learn the switch IDs of each core switch and each edge switch, and the appropriate exit port(s) corresponding to each switch. Preferably, the forwarding tables of each edge switch indicate the addresses of each device attached to that edge switch, the address of each device that is in communication with an attached device and the address of every other switch in the network.Type: GrantFiled: June 14, 2005Date of Patent: September 21, 2010Assignee: Cisco Technology, Inc.Inventors: Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Silvano Gai
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Patent number: 7658319Abstract: Methods and devices are provided for identifying, locating and provisioning individual RFID devices in a network with “personalities” that are appropriate for the roles of the RFID devices. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: GrantFiled: December 12, 2007Date of Patent: February 9, 2010Assignee: Cisco Technology, Inc.Inventors: Arthur G. Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christopher Wiborg, Vikas Butaney, Rajiv Singhal
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Publication number: 20080087730Abstract: Methods and devices are provided for identifying, locating and provisioning individual RFID devices in a network with “personalities” that are appropriate for the roles of the RFID devices. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: ApplicationFiled: December 12, 2007Publication date: April 17, 2008Applicant: Cioco Technology, Inc.Inventors: Arthur Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christoper Wiborg, Vikas Bautaney, Rajiv Singhal
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Publication number: 20080089247Abstract: A solution is provided wherein the interfaces between multiple chassis (e.g., edge switches) in a network of layer 2 devices and a spanning tree device are treated as a single emulated switch. This emulated switch effectively enables two different views to the two different sides. Thus, frames from the network of layer 2 switches destined to any port of the emulated switch may take any of the links (through any of the physical switches), thereby enabling effective load-balancing for frames traveling from the layer 2 network side into the spanning tree device. Meanwhile the spanning tree device does not recognize an illegal loop in its connection to two different edge switches as it views the two links as a single logical EtherChannel.Type: ApplicationFiled: October 16, 2006Publication date: April 17, 2008Applicant: Cisco Technology, Inc., A California CorporationInventors: Sanjay Sane, Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Soei-Shin Hang, Ramana Mellacheruvu
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Patent number: 7336175Abstract: Methods and devices are provided for identifying, locating and provisioning individual RFID devices in a network. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: GrantFiled: June 9, 2004Date of Patent: February 26, 2008Assignee: Cisco Technology, Inc.Inventors: Arthur G. Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christopher Wiborg, Vikas Butaney, Rajiv Singhal
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Patent number: 7325734Abstract: Methods and devices are provided for identifying, locating and provisioning individual RFID devices in a network with “personalities” that are appropriate for the roles of the RFID devices. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: GrantFiled: June 9, 2004Date of Patent: February 5, 2008Assignee: Cisco Technology, Inc.Inventors: Arthur G. Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christopher Wiborg, Vikas Butaney, Rajiv Singhal
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Patent number: 7322523Abstract: Methods and devices are provided for identifying and provisioning individual RFID devices in a network. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: GrantFiled: June 9, 2004Date of Patent: January 29, 2008Assignee: Cisco Technology, Inc.Inventors: Arthur G. Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christopher Wiborg, Vikas Butaney, Rajiv Singhal
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Publication number: 20060098589Abstract: Increased usage of network links is provided and smaller forwarding tables are required. A combination of STP and Multipath methods may be implemented in a network. Frames may be forwarded between switches not only according to MAC addresses, but also according to switch IDs and local IDs. Switch IDs do not need to be globally unique, but should be unique within a particular network. Local IDs need only be unique within a particular switch. Some preferred implementations allow frames to be delivered in order to devices requiring in-order delivery. Preferably, core switches need only learn the switch IDs of each core switch and each edge switch, and the appropriate exit port(s) corresponding to each switch. Preferably, the forwarding tables of each edge switch indicate the addresses of each device attached to that edge switch, the address of each device that is in communication with an attached device and the address of every other switch in the network.Type: ApplicationFiled: June 14, 2005Publication date: May 11, 2006Applicant: Cisco Technology, Inc.Inventors: Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Silvano Gai
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Publication number: 20050253717Abstract: Methods and devices are provided for identifying, locating and provisioning individual RFID devices in a network with “personalities” that are appropriate for the roles of the RFID devices. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: ApplicationFiled: June 9, 2004Publication date: November 17, 2005Applicant: Cisco Technology, Inc.Inventors: Arthur Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christopher Wiborg, Vikas Butaney, Rajiv Singhal
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Publication number: 20050252957Abstract: Methods and devices are provided for identifying, locating and provisioning individual RFID devices in a network. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: ApplicationFiled: June 9, 2004Publication date: November 17, 2005Applicant: Cisco Technology, Inc.Inventors: Arthur Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christopher Wiborg, Vikas Butaney, Rajiv Singhal
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Publication number: 20050252970Abstract: Methods and devices are provided for identifying and provisioning individual RFID devices in a network. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, MAC address information and EPC information can be combined to identify a particular device and its location in a network. For implementations using the Dynamic Host Configuration Protocol (“DHCP”), DHCP Options may be used to pass provisioning information. Some implementations employ Domain Name Service (“DNS”) and dynamic DNS (“DDNS”) to allow easy identification of RFID devices.Type: ApplicationFiled: June 9, 2004Publication date: November 17, 2005Applicant: Cisco Technology, Inc.Inventors: Arthur Howarth, Ralph Droms, Roland Saville, Lawrence Kreeger, Christopher Wiborg, Vikas Butaney, Rajiv Singhal