Patents by Inventor David J. Leroy
David J. Leroy 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: 11206192Abstract: A novel method for troubleshooting a logical network is provided. The logical network has logical forwarding elements operating inside virtual network forwarding engines. The method receives a source identifier and a destination identifier that correspond to nodes in the logical network. The method then retrieves a set of network data from a virtual network forwarding engine and identifies a path in the logical network by traversing the logical network according to the retrieved set of network data. This traversal starts at an initial network node that is identified by the source identifier and continues through a set of next-hop network nodes that are each identified based on the destination identifier. At least some of the network nodes are logical ports associated with logical forwarding elements implemented by the virtual network forwarding engine. The method then reports the set of traversed logical nodes.Type: GrantFiled: March 2, 2019Date of Patent: December 21, 2021Assignee: NICIRA, INC.Inventors: Xinhua Hong, Ronghua Zhang, David J. Leroy, Yong Wang, Jia Yu
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Publication number: 20210258254Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: ApplicationFiled: May 4, 2021Publication date: August 19, 2021Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Patent number: 11025543Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: GrantFiled: January 29, 2020Date of Patent: June 1, 2021Assignee: NICIRA, INC.Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C Basler, Serge Maskalik, Rajiv Ramanathan, David J Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Patent number: 10938788Abstract: Some embodiments provide a method for configuring a gateway datapath that processes data messages between a logical network implemented in a datacenter and an external network. The method receives configuration data including security policy rules for a logical router implemented by the datapath that indicate whether to apply a security protocol to certain data messages transmitted from a particular interface of the logical router. The method identifies a particular security policy rule that applies to data messages that (i) have a destination address in a set of destination addresses and (ii) meet at least one additional criteria. The method generates a static route, for a routing table used by the datapath to implement the logical router, that routes data messages with destination addresses in the set of destination addresses to the particular interface. The datapath applies the security policy rules for data messages transmitted from the particular interface.Type: GrantFiled: December 12, 2018Date of Patent: March 2, 2021Assignee: VMWARE, INC.Inventors: Yong Wang, Xinhua Hong, David J. Leroy, Kai-Wei Fan
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Publication number: 20200195607Abstract: Some embodiments provide a method for configuring a gateway datapath that processes data messages between a logical network implemented in a datacenter and an external network. The method receives configuration data including security policy rules for a logical router implemented by the datapath that indicate whether to apply a security protocol to certain data messages transmitted from a particular interface of the logical router. The method identifies a particular security policy rule that applies to data messages that (i) have a destination address in a set of destination addresses and (ii) meet at least one additional criteria. The method generates a static route, for a routing table used by the datapath to implement the logical router, that routes data messages with destination addresses in the set of destination addresses to the particular interface. The datapath applies the security policy rules for data messages transmitted from the particular interface.Type: ApplicationFiled: December 12, 2018Publication date: June 18, 2020Inventors: Yong Wang, Xinhua Hong, David J. Leroy, Kai-Wei Fan
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Publication number: 20200169503Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: ApplicationFiled: January 29, 2020Publication date: May 28, 2020Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C Basler, Serge Maskalik, Rajiv Ramanathan, David J Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Patent number: 10567283Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: GrantFiled: November 4, 2018Date of Patent: February 18, 2020Assignee: NICIRA, INC.Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Publication number: 20190199600Abstract: A novel method for troubleshooting a logical network is provided. The logical network has logical forwarding elements operating inside virtual network forwarding engines. The method receives a source identifier and a destination identifier that correspond to nodes in the logical network. The method then retrieves a set of network data from a virtual network forwarding engine and identifies a path in the logical network by traversing the logical network according to the retrieved set of network data. This traversal starts at an initial network node that is identified by the source identifier and continues through a set of next-hop network nodes that are each identified based on the destination identifier. At least some of the network nodes are logical ports associated with logical forwarding elements implemented by the virtual network forwarding engine. The method then reports the set of traversed logical nodes.Type: ApplicationFiled: March 2, 2019Publication date: June 27, 2019Inventors: Xinhua Hong, Ronghua Zhang, David J. Leroy, Yong Wang, Jia Yu
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Patent number: 10237142Abstract: A novel method for troubleshooting a logical network is provided. The logical network has logical forwarding elements operating inside virtual network forwarding engines. The method receives a source identifier and a destination identifier that correspond to nodes in the logical network. The method then retrieves a set of network data from a virtual network forwarding engine and identifies a path in the logical network by traversing the logical network according to the retrieved set of network data. This traversal starts at an initial network node that is identified by the source identifier and continues through a set of next-hop network nodes that are each identified based on the destination identifier. At least some of the network nodes are logical ports associated with logical forwarding elements implemented by the virtual network forwarding engine. The method then reports the set of traversed logical nodes.Type: GrantFiled: April 4, 2016Date of Patent: March 19, 2019Assignee: NICIRA, INC.Inventors: Xinhua Hong, Ronghua Zhang, David J. Leroy, Yong Wang, Jia Yu
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Publication number: 20190075050Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: ApplicationFiled: November 4, 2018Publication date: March 7, 2019Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Patent number: 10164881Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: GrantFiled: February 17, 2017Date of Patent: December 25, 2018Assignee: NICIRA, INC.Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Publication number: 20170288981Abstract: A novel method for troubleshooting a logical network is provided. The logical network has logical forwarding elements operating inside virtual network forwarding engines. The method receives a source identifier and a destination identifier that correspond to nodes in the logical network. The method then retrieves a set of network data from a virtual network forwarding engine and identifies a path in the logical network by traversing the logical network according to the retrieved set of network data. This traversal starts at an initial network node that is identified by the source identifier and continues through a set of next-hop network nodes that are each identified based on the destination identifier. At least some of the network nodes are logical ports associated with logical forwarding elements implemented by the virtual network forwarding engine. The method then reports the set of traversed logical nodes.Type: ApplicationFiled: April 4, 2016Publication date: October 5, 2017Inventors: Xinhua Hong, Ronghua Zhang, David J. Leroy, Yong Wang, Jia Yu
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Publication number: 20170163532Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: ApplicationFiled: February 17, 2017Publication date: June 8, 2017Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Patent number: 9590901Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: GrantFiled: March 14, 2014Date of Patent: March 7, 2017Assignee: NICIRA, INC.Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Patent number: 9225597Abstract: Some embodiments provide a network system. The network system includes a first set of host machines hosting virtual machines that connect to each other through a logical network. The network system includes a second set of host machines hosting virtualized containers that operate as gateways to process packets entering the logical network from external sources. Each of the virtualized containers advertises itself to an external router as a next hop for packets entering the logical network such that the external router uses equal-cost multi-path forwarding to distribute the packets across the virtualized containers on the second set of host machines.Type: GrantFiled: March 14, 2014Date of Patent: December 29, 2015Assignee: NICIRA, INC.Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Publication number: 20150263899Abstract: Some embodiments provide a network system. The network system includes a first set of host machines hosting virtual machines that connect to each other through a logical network. The network system includes a second set of host machines hosting virtualized containers that operate as gateways to process packets entering the logical network from external sources. Each of the virtualized containers advertises itself to an external router as a next hop for packets entering the logical network such that the external router uses equal-cost multi-path forwarding to distribute the packets across the virtualized containers on the second set of host machines.Type: ApplicationFiled: March 14, 2014Publication date: September 17, 2015Applicant: Nicira, Inc.Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Publication number: 20150263946Abstract: Some embodiments provide a network system. The network system includes a first set of host machines for hosting virtual machines that connect to each other through a logical network. The first set of host machines includes managed forwarding elements for forwarding data between the host machines. The network system includes a second set of host machines for hosting virtualized containers that operate as gateways for forwarding data between the virtual machines and an external network. At least one of the virtualized containers peers with at least one physical router in the external network in order to advertise addresses of the virtual machines to the physical router.Type: ApplicationFiled: March 14, 2014Publication date: September 17, 2015Applicant: Nicira, Inc.Inventors: Ariel Tubaltsev, Ronghua Zhang, Benjamin C. Basler, Serge Maskalik, Rajiv Ramanathan, David J. Leroy, Srinivas Neginhal, Kai-Wei Fan, Ansis Atteka
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Patent number: 5812642Abstract: A system and method are provided for monitoring and analyzing audience response to a broadcast promotion. The specific embodiment for fund-raising campaigns for public television stations is addressed, wherein the taking of pledges over the telephone is automated, the response data entered directly into a computer with the use of scripted screens. The effectiveness of segments of the campaign is calculated by correlating the response data, including the number of telephone calls received, with each promotion segment. Additional methods of manipulating and displaying response data are also disclosed, including the use of demographic and audience ratings to provide an indication of the effectiveness of a promotion segment.Type: GrantFiled: July 12, 1995Date of Patent: September 22, 1998Inventor: David J. Leroy