Patents by Inventor Daniel J. Wendlandt
Daniel J. Wendlandt 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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Publication number: 20160149791Abstract: Some embodiments provide a method for a network controller that manages several managed forwarding elements. The method receives a request to trace a specified packet having a particular source on a logical switching element. The method generates the packet at the network controller according to the packet specification. The generated packet includes an indicator that the packet is for a trace operation. The method inserts the packet into a managed forwarding element associated with the particular source. The method receives a set of messages from a set of managed forwarding elements that process the packet regarding operations performed on the packet.Type: ApplicationFiled: February 1, 2016Publication date: May 26, 2016Inventors: Igor Ganichev, Pankaj Thakkar, Paul Fazzone, Teemu Koponen, Daniel J. Wendlandt
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Patent number: 9282019Abstract: Some embodiments provide a method for a network controller that manages several managed forwarding elements. The method receives a request to trace a specified packet having a particular source on a logical switching element. The method generates the packet at the network controller according to the packet specification. The generated packet includes an indicator that the packet is for a trace operation. The method inserts the packet into a managed forwarding element associated with the particular source. The method receives a set of messages from a set of managed forwarding elements that process the packet regarding operations performed on the packet.Type: GrantFiled: July 26, 2013Date of Patent: March 8, 2016Assignee: NICIRA, INC.Inventors: Igor Ganichev, Pankaj Thakkar, Paul Fazzone, Teemu Koponen, Daniel J. Wendlandt
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Publication number: 20160013969Abstract: Systems and methods for managing a network are described. A view of current state of the network is maintained where the current state of the network characterizes network topology and network constituents, including network entities and network elements residing in or on the network. Events are announced that correspond to changes in the state of the network and one or more network elements can be configured accordingly. Methods for managing network traffic are described that ensure forwarding and other actions taken by network elements implement globally declared network policy and refer to high-level names, independently of network topology and the location of network constituents. Methods for discovering network constituents are described, whereby are automatically configured. Routing may be performed using ACL and packets can be intercepted to permit host to continue in sleep mode. The methods are applicable to virtual environments.Type: ApplicationFiled: June 22, 2015Publication date: January 14, 2016Inventors: Martin Casado, Keith E. Amidon, Peter J. Balland, III, Natasha Gude, Justin Pettit, Benjamin Levy Pfaff, Scott J. Shenker, Daniel J. Wendlandt
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Patent number: 9083609Abstract: Systems and methods for managing a network are described. A view of current state of the network is maintained where the current state of the network characterizes network topology and network constituents, including network entities and network elements residing in or on the network. Events are announced that correspond to changes in the state of the network and one or more network elements can be configured accordingly. Methods for managing network traffic are described that ensure forwarding and other actions taken by network elements implement globally declared network policy and refer to high-level names, independently of network topology and the location of network constituents. Methods for discovering network constituents are described, whereby are automatically configured. Routing may be performed using ACL and packets can be intercepted to permit host to continue in sleep mode. The methods are applicable to virtual environments.Type: GrantFiled: September 26, 2008Date of Patent: July 14, 2015Assignee: NICIRA, INC.Inventors: Martin Casado, Keith Eric Amidon, Peter J. Balland, III, Natasha Gude, Justin Pettit, Benjamin Levy Pfaff, Scott J. Shenker, Daniel J. Wendlandt
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Publication number: 20150180801Abstract: In general, the present invention relates to a virtual platform in which one or more distributed virtual switches can be created for use in virtual networking. According to some aspects, the distributed virtual switch according to the invention provides the ability for virtual and physical machines to more readily, securely, and efficiently communicate with each other even if they are not located on the same physical host and/or in the same subnet or VLAN. According other aspects, the distributed virtual switches of the invention can support integration with traditional IP networks and support sophisticated IP technologies including NAT functionality, stateful firewalling, and notifying the IP network of workload migration. According to further aspects, the virtual platform of the invention creates one or more distributed virtual switches which may be allocated to a tenant, application, or other entity requiring isolation and/or independent configuration state.Type: ApplicationFiled: January 9, 2015Publication date: June 25, 2015Inventors: Martin Casado, Paul Ingram, Keith E. Amidon, Peter J. Balland, III, Teemu Koponen, Benjamin L. Pfaff, Justin Pettit, Jesse E. Gross, IV, Daniel J. Wendlandt
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Patent number: 8964767Abstract: Some embodiments provide a novel method for forwarding a packet at a managed switching element in a first domain. The method receives a packet from a local machine. The method encapsulates the packet with a first context identifier that identifies a first logical port of a first logical switching element that couples to machines in both the first domain and a second domain. The first logical port maps to a destination address of the packet. Based on a mapping of the first logical port to a second logical port of a second logical switching element that couples to machines in only the first domain, the method encapsulates the packet with a second context identifier that identifies the second logical port. The method transmits the twice-encapsulated packet out of a port of the managed switching element based on the second context identifier.Type: GrantFiled: August 17, 2012Date of Patent: February 24, 2015Assignee: Nicira, Inc.Inventors: Teemu Koponen, Martin Casado, Pankaj Thakkar, Ronghua Zhang, Daniel J. Wendlandt
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Patent number: 8966035Abstract: In general, the present invention relates to a virtual platform in which one or more distributed virtual switches can be created for use in virtual networking. According to some aspects, the distributed virtual switch according to the invention provides the ability for virtual and physical machines to more readily, securely, and efficiently communicate with each other even if they are not located on the same physical host and/or in the same subnet or VLAN. According other aspects, the distributed virtual switches of the invention can support integration with traditional IP networks and support sophisticated IP technologies including NAT functionality, stateful firewalling, and notifying the IP network of workload migration. According to further aspects, the virtual platform of the invention creates one or more distributed virtual switches which may be allocated to a tenant, application, or other entity requiring isolation and/or independent configuration state.Type: GrantFiled: April 1, 2010Date of Patent: February 24, 2015Assignee: Nicira, Inc.Inventors: Martin Casado, Paul Ingram, Keith Eric Amidon, Peter J. Balland, III, Teemu Koponen, Benjamin Levy Pfaff, Justin Pettit, Jesse E. Gross, IV, Daniel J. Wendlandt
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Patent number: 8958298Abstract: A novel method for logically routing a packet between a source machine that is in a first logical domain and a destination machine that is in a second logical domain is described. The method configures a managed switching element as a second-level managed switching element. The method configures a router in a host that includes the second-level managed switching element. The method communicatively couples the second-level managed switching element with the router. The method causes the router to route a packet when the router receives a packet from the first logical domain that is addressed to the second logical domain.Type: GrantFiled: August 17, 2012Date of Patent: February 17, 2015Assignee: Nicira, Inc.Inventors: Ronghua Zhang, Pankaj Thakkar, Jesse E. Gross, IV, Justin Pettit, Keith E. Amidon, Daniel J. Wendlandt, Teemu Koponen, Martin Casado
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Patent number: 8959215Abstract: Some embodiments of the invention provide a robust scaling-out of network functionality by providing a software layer, called the network hypervisor, that sits between the network forwarding functions (i.e., the forwarding plane) and the network control interfaces (i.e., the control plane). The network hypervisor of some embodiments provides a logical abstraction of the network's forwarding functionality, so that network operators make their control decisions in terms of this abstraction, independent of the details of the underlying networking hardware. The network hypervisor of some embodiments may then “compile” commands placed against this abstraction into configurations of the underlying hardware. Accordingly, in some embodiments, there are two design challenges: (1) the choice of the network abstraction, and (2) the technology needed to compile the logical “abstract” controls into low-level configurations.Type: GrantFiled: July 6, 2011Date of Patent: February 17, 2015Assignee: Nicira, Inc.Inventors: Teemu Koponen, Martin Casado, Paul S. Ingram, W. Andrew Lambeth, Peter J. Balland, III, Keith E. Amidon, Daniel J. Wendlandt
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Publication number: 20150016298Abstract: Some embodiments provide a method for a network controller that manages several managed forwarding elements. The method receives a request to trace a specified packet having a particular source on a logical switching element. The method generates the packet at the network controller according to the packet specification. The generated packet includes an indicator that the packet is for a trace operation. The method inserts the packet into a managed forwarding element associated with the particular source. The method receives a set of messages from a set of managed forwarding elements that process the packet regarding operations performed on the packet.Type: ApplicationFiled: July 26, 2013Publication date: January 15, 2015Applicant: Nicira, Inc.Inventors: Igor Ganichev, Pankaj Thakkar, Paul Fazzone, Teemu Koponen, Daniel J. Wendlandt
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Publication number: 20130060940Abstract: Some embodiments of the invention provide a robust scaling-out of network functionality by providing a software layer, called the network hypervisor, that sits between the network forwarding functions (i.e., the forwarding plane) and the network control interfaces (i.e., the control plane). The network hypervisor of some embodiments provides a logical abstraction of the network's forwarding functionality, so that network operators make their control decisions in terms of this abstraction, independent of the details of the underlying networking hardware. The network hypervisor of some embodiments may then “compile” commands placed against this abstraction into configurations of the underlying hardware. Accordingly, in some embodiments, there are two design challenges: (1) the choice of the network abstraction, and (2) the technology needed to compile the logical “abstract” controls into low-level configurations.Type: ApplicationFiled: July 6, 2011Publication date: March 7, 2013Inventors: Teemu Koponen, Martin Casado, Paul S. Ingram, W. Andrew Lambeth, Peter J. Balland, III, Keith E. Amidon, Daniel J. Wendlandt
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Publication number: 20130051399Abstract: A novel method for logically routing a packet between a source machine that is in a first logical domain and a destination machine that is in a second logical domain is described. The method configures a managed switching element as a second-level managed switching element. The method configures a router in a host that includes the second-level managed switching element. The method communicatively couples the second-level managed switching element with the router. The method causes the router to route a packet when the router receives a packet from the first logical domain that is addressed to the second logical domain.Type: ApplicationFiled: August 17, 2012Publication date: February 28, 2013Inventors: Ronghue Zhang, Pankaj Thakkar, Jesse E. Gross, IV, Justin Pettit, Keith E. Amidon, Daniel J. Wendlandt, Teemu Koponen, Martin Casado
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Publication number: 20130044761Abstract: Some embodiments provide a novel network control system for managing a set of switching elements in a network. The network control system includes a first set of network controllers for managing a first set of switching elements that enable communication between a first set of machines. The network control system includes a second set of network controllers for managing a second set of switching elements that enable communication between a second set of machines. The second set of switching elements is separate from the first set of switching elements and the second set of machines is separate from the first set of machines. The network control system includes a third set of network controllers for managing the first and second sets of network controllers in order to enable communication between machines in the first set of machines and machines in the second set of machines.Type: ApplicationFiled: August 17, 2012Publication date: February 21, 2013Inventors: Teemu Koponen, Martin Casado, Pankaj Thakkar, Ronghua Zhang, Daniel J. Wendlandt
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Publication number: 20130044636Abstract: A novel method for configuring first and second managed forwarding elements to perform logical L2 switching and L3 routing is described. The method generates a first set of flow entries for configuring the first managed forwarding element to perform logical L2 ingress processing and L3 routing processing. The method generates a second set of flow entries for configuring the second managed forwarding element to performing logical L2 egress processing.Type: ApplicationFiled: August 17, 2012Publication date: February 21, 2013Inventors: Teemu Koponen, Ronghua Zhang, Martin Casado, Pankaj Thakkar, Jesse E. Gross, IV, Daniel J. Wendlandt, Mehak Mahajan
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Publication number: 20130044752Abstract: A network control system that includes a first set of network controllers for (i) receiving a logical control plane definition of a logical switching element that couples to both a first set of network hosts in a first domain and a second set of network hosts in a second domain, (ii) translating the logical control plane definition of the logical switching element into a first set of flow entries in a first logical forwarding plane, and (iii) translating the first set of flow entries into a second set of flow entries in a second logical forwarding plane. The network control system includes a second set of network controllers in the first domain for (i) receiving a portion of the second set of flow entries and (ii) translating the portion of the second set of flow entries into a third set of flow entries in a physical control plane.Type: ApplicationFiled: August 17, 2012Publication date: February 21, 2013Inventors: Teemu Koponen, Martin Casado, Pankaj Thakkar, Ronghua Zhang, Daniel J. Wendlandt
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Publication number: 20130044763Abstract: Some embodiments provide a novel method for forwarding a packet at a managed switching element in a first domain. The method receives a packet from a local machine. The method encapsulates the packet with a first context identifier that identifies a first logical port of a first logical switching element that couples to machines in both the first domain and a second domain. The first logical port maps to a destination address of the packet. Based on a mapping of the first logical port to a second logical port of a second logical switching element that couples to machines in only the first domain, the method encapsulates the packet with a second context identifier that identifies the second logical port. The method transmits the twice-encapsulated packet out of a port of the managed switching element based on the second context identifier.Type: ApplicationFiled: August 17, 2012Publication date: February 21, 2013Inventors: Teemu Koponen, Martin Casado, Pankaj Thakkar, Ronghua Zhang, Daniel J. Wendlandt
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Publication number: 20100257263Abstract: In general, the present invention relates to a virtual platform in which one or more distributed virtual switches can be created for use in virtual networking. According to some aspects, the distributed virtual switch according to the invention provides the ability for virtual and physical machines to more readily, securely, and efficiently communicate with each other even if they are not located on the same physical host and/or in the same subnet or VLAN. According other aspects, the distributed virtual switches of the invention can support integration with traditional IP networks and support sophisticated IP technologies including NAT functionality, stateful firewalling, and notifying the IP network of workload migration. According to further aspects, the virtual platform of the invention creates one or more distributed virtual switches which may be allocated to a tenant, application, or other entity requiring isolation and/or independent configuration state.Type: ApplicationFiled: April 1, 2010Publication date: October 7, 2010Applicant: NICIRA NETWORKS, INC.Inventors: Martin Casado, Paul Ingram, Keith Eric Amidon, Peter J. Balland, III, Teemu Koponen, Benjamin Levy Pfaff, Justin Pettit, Jesse E. Gross, IV, Daniel J. Wendlandt
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Publication number: 20090138577Abstract: Systems and methods for managing a network are described. A view of current state of the network is maintained where the current state of the network characterizes network topology and network constituents, including network entities and network elements residing in or on the network. Events are announced that correspond to changes in the state of the network and one or more network elements can be configured accordingly. Methods for managing network traffic are described that ensure forwarding and other actions taken by network elements implement globally declared network policy and refer to high-level names, independently of network topology and the location of network constituents. Methods for discovering network constituents are described, whereby are automatically configured. Routing may be performed using ACL and packets can be intercepted to permit host to continue in sleep mode. The methods are applicable to virtual environments.Type: ApplicationFiled: September 26, 2008Publication date: May 28, 2009Applicant: Nicira NetworksInventors: Martin Casado, Keith Eric Amidon, Peter J. Balland, III, Natasha Gude, Justin Pettit, Benjamin Levy Pfaff, Scott J. Shenker, Daniel J. Wendlandt