Patents by Inventor Quaizar Vohra

Quaizar Vohra 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).

  • Patent number: 8806031
    Abstract: A system and method for the automated configuration of network resources is described. In one embodiment, a network management device can manage virtual network entities, such as virtual network switch fabrics, by provisioning physical network resources for and deallocating physical network resources from virtual network entities. The network management device can determine available physical network resources by broadcasting request signals to physical network resources and listening for advertisement response signals from available physical network resources.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: August 12, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Umesh Kondur, Quaizar Vohra, Neha A. Kaushil
  • Patent number: 8755396
    Abstract: In one embodiment, an apparatus includes a switch core that has a multi-stage switch fabric physically distributed among a set of chassis. The multi-stage switch fabric has a set of input buffers and a set of output ports. The switch core can be configured to be coupled to a set of edge devices. The apparatus can also include a controller implemented in hardware without software during operation and with software during configuration and monitoring. The controller can be coupled to the set of input buffers and the set of output ports. The controller can be configured to send a flow control signal to an input buffer from the set of input buffers when congestion at an output port from the set of output ports is predicted and before congestion in the switch core occurs.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: June 17, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Gunes Aybay, Jean-Marc Frailong, Anjan Venkatramani, Quaizar Vohra
  • Patent number: 8730954
    Abstract: In one embodiment, an apparatus includes a switch core that defines a single logical entity and has a multi-stage switch fabric physically distributed across a plurality of chassis. The multi-stage switch fabric has a plurality of ingress ports and a plurality of egress ports. The switch core is configured to be coupled to a plurality of peripheral processing devices via the plurality of ingress ports and the plurality of egress ports. The switch core is also configured to provide non-blocking connectivity at line rate between a first peripheral processing device disposed with a first chassis and a second peripheral processing device disposed within a second chassis.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 20, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Gunes Aybay, Jean-Marc Frailong, Anjan Venkatramani, Quaizar Vohra
  • Patent number: 8694654
    Abstract: In one embodiment, an apparatus includes a first network control entity associated with at least a portion of multiple physical ports at a first access switch that are operatively coupled to a peripheral processing device and a switch fabric. The first network control entity can receive a host protocol request from the peripheral processing device, the first network control entity to transmit the host protocol request to a second network control entity associated with at least a portion of multiple physical ports at a second access switch, such that the host protocol request causes the second network control entity to obtain a response to the host protocol request. The first network control entity can receive the response to the host protocol request from the second network control entity and transmit the response to the host protocol request to the peripheral processing device.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: April 8, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Vijayabhaskar Annamalai Kalusivalingam, Jaihari Loganathan, Sreekanth Reddy, Ravi Shekhar, Jeelani Syed, Quaizar Vohra
  • Patent number: 8565118
    Abstract: In one embodiment, a method includes detecting a virtual resource hosted by a host device, selecting a configuration template associated with the virtual resource, and providing a provisioning instruction to a virtual switch module hosted by the host device based on the configuration template. The host device is operatively coupled to a network device. The detecting is at the network device; the selecting is at the network device; and the providing is at the network device. The virtual switch module is in communication with the virtual resource. The configuration template associated with the virtual resource is selected from a library of configuration templates accessible to the network device.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: October 22, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Amit Shukla, Arthi Ayyangar, Vijayabhaskar Annamalai Kalusivalingam, Quaizar Vohra
  • Patent number: 8560660
    Abstract: In some embodiments, an apparatus implemented in a memory and/or a processing device includes a first network control entity to manage a first data plane module associated with a port from a set of ports at a first access switch. The first network control entity associates an identifier of a peripheral processing device operatively coupled to the port from the set of ports with a next hop reference. The first network control entity provides the next hop reference to a second network control entity that manages a second data plane module at a second access switch such that the second data plane module can append the next hop reference to a data packet when the peripheral processing device is within a data path between and including the second access switch and a destination peripheral processing device.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: October 15, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Vijayabhaskar Annamalai Kalusivalingam, Quaizar Vohra, Ravi Shekhar, Jaihari Loganathan
  • Publication number: 20130003726
    Abstract: In one embodiment, edge devices can be configured to be coupled to a multi-stage switch fabric and peripheral processing devices. The edge devices and the multi-stage switch fabric can collectively define a single logical entity. A first edge device from the edge devices can be configured to be coupled to a first peripheral processing device from the peripheral processing devices. The second edge device from the edge devices can be configured to be coupled to a second peripheral processing device from the peripheral processing devices. The first edge device can be configured such that virtual resources including a first virtual resource can be defined at the first peripheral processing device. A network management module coupled to the edge devices and configured to provision the virtual resources such that the first virtual resource can be migrated from the first peripheral processing device to the second peripheral processing device.
    Type: Application
    Filed: September 10, 2012
    Publication date: January 3, 2013
    Applicant: Juniper Networks, Inc.
    Inventors: Pradeep SINDHU, Gunes Aybay, Jean-Marc Frailong, Anjan Venkatramani, Quaizar Vohra
  • Patent number: 8340088
    Abstract: In one embodiment, an apparatus can include a first edge device that can have a packet processing module. The first edge device can be configured to receive a packet. The packet processing module of the first edge device can be configured to produce cells based on the packet. A second edge device can have a packet processing module configured to reassemble the packet based on the cells. A multi-stage switch fabric can be coupled to the first edge device and the second edge device. The multi-stage switch fabric can define a single logical entity. The multi-stage switch fabric can have switch modules. Each switch module from the switch modules can have a shared memory device. The multi-stage switch fabric can be configured to switch the cells so that the cells are sent to the second edge device.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 25, 2012
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Gunes Aybay, Jean-Marc Frailong, Anjan Venkatramani, Quaizar Vohra
  • Patent number: 8335213
    Abstract: In one embodiment, an apparatus includes a switch core that has a multi-stage switch fabric. The multi-stage switch fabric has a set of ingress ports and a set of egress ports. The switch core can be configured to be coupled to a set of edge devices via the set of ingress ports and the set of egress ports. The switch core can be configured to receive a packet from an ingress port from the set of ingress ports. The switch core can be configured to send a set of cells associated with the packet from the ingress port to an egress port from the set of egress ports without a store-and-forward delay associated with a zero-load latency for the switch core.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: December 18, 2012
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Gunes Aybay, Jean-Marc Frailong, Anjan Venkatramani, Quaizar Vohra
  • Patent number: 8265071
    Abstract: In one embodiment, edge devices can be configured to be coupled to a multi-stage switch fabric and peripheral processing devices. The edge devices and the multi-stage switch fabric can collectively define a single logical entity. A first edge device from the edge devices can be configured to be coupled to a first peripheral processing device from the peripheral processing devices. The second edge device from the edge devices can be configured to be coupled to a second peripheral processing device from the peripheral processing devices. The first edge device can be configured such that virtual resources including a first virtual resource can be defined at the first peripheral processing device. A network management module coupled to the edge devices and configured to provision the virtual resources such that the first virtual resource can be migrated from the first peripheral processing device to the second peripheral processing device.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: September 11, 2012
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Gunes Aybay, Jean-Marc Frailong, Anjan Venkatramani, Quaizar Vohra
  • Publication number: 20120158930
    Abstract: In some embodiments, an apparatus implemented in a memory and/or a processing device includes a first network control entity to manage a first data plane module associated with a port from a set of ports at a first access switch. The first network control entity associates an identifier of a peripheral processing device operatively coupled to the port from the set of ports with a next hop reference. The first network control entity provides the next hop reference to a second network control entity that manages a second data plane module at a second access switch such that the second data plane module can append the next hop reference to a data packet when the peripheral processing device is within a data path between and including the second access switch and a destination peripheral processing device.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Applicant: Juniper Networks, Inc.
    Inventors: Vijayabhaskar Annamalai Kalusivalingam, Quaizar Vohra, Ravi Shekhar, Jaihari Loganathan
  • Publication number: 20120158942
    Abstract: In some embodiments, a system includes a first network control entity, a second network control entity and a third network control entity. The first network control entity and the second network control entity are associated with a first network segment. The third network control entity is associated with a second network segment. The first network control entity is operable to send to the second network control entity an identifier of the first network segment and forwarding-state information associated with a data port at a first network element. The second network control entity is operable to receive the identifier of the first network segment and the forwarding-state information. The second network control entity is operable to send the forwarding-state information to a second network element. The first network control entity does not send the identifier of the first network segment and the forwarding-state information to the third network control entity.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Applicant: Juniper Networks, Inc.
    Inventors: Vijayabhaskar Annamalai Kalusivalingam, Jaihari Loganathan, Ravi Shekhar, Jeelani Syed, Quaizar Vohra
  • Publication number: 20120155320
    Abstract: In some embodiments, a switch fabric system includes multiple access switches configured to be operatively coupled to a switch fabric. The multiple access switches include multiple ports each to be operatively coupled to a peripheral processing device. A first set of ports from the multiple ports and a second set of ports from the multiple ports are managed by a first network control entity when the switch fabric system is in a first configuration. The first set of ports is managed by the first network control entity and the second set of ports is managed by a second network control entity when the switch fabric system is in a second configuration. The second network control entity is automatically initiated when the system is changed from the first configuration to the second configuration.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Applicant: Juniper Networks, Inc.
    Inventors: Quaizar Vohra, Umesh Kondur, Nishanth Gaddam
  • Publication number: 20120155453
    Abstract: In some embodiments, an apparatus includes a compute device to communicate with a network control entity at each access switch from a set of access switches that define a portion of a data plane having a switch fabric coupling as hierarchical peers each access switch from the set of access switches. The compute device is operable to define a portion of a control plane that includes the network control entities from the set of access switches such that the compute device is hierarchically removed from the network control entities from the set of access switches. The compute device is operable to receive forwarding-state information from a first access switch from the set of access switches. The compute device to send the forwarding-state information to a second access switch from the set of access switches.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Applicant: Juniper Networks, Inc.
    Inventors: Quaizar Vohra, Umesh Kondur
  • Patent number: 8185658
    Abstract: Virtual Private Networks (VPNs) are supported in which customers may use popular internet gateway protocol (IGPs) without the need to convert such IGPs, running on customer devices to a single protocol, such as the border gateway protocol (BGP). Scaling problems, which might otherwise occur when multiple instances of an IGP flood link state information, are avoided by using a flooding topology which is smaller than a forwarding topology. The flooding topology may be a fully connected sub-set of the forwarding topology.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: May 22, 2012
    Assignee: Juniper Networks, Inc.
    Inventors: Quaizar Vohra, Nischal Sheth
  • Publication number: 20120069842
    Abstract: In some embodiments, a non-transitory processor-readable medium stores code representing instructions configured to cause a processor to receive, from an access switch, a first signal including forwarding state information associated with a first peripheral processing device from a set of peripheral processing devices. The code can further represent instructions configured to cause the processor to receive, from the first peripheral processing device, a second signal including a data packet. The code can further represent instructions configured to cause the processor to send, to a replication engine associated with the set of peripheral processing devices, a third signal such that the replication engine (1) defines a copy of the data packet, which is included within the third signal, and (2) sends, to a second peripheral processing device from the set of peripheral processing devices, a fourth signal including the copy of the data packet.
    Type: Application
    Filed: March 22, 2011
    Publication date: March 22, 2012
    Applicant: JUNIPER NETWORKS, INC.
    Inventors: Sreekanth REDDY, Ravi SHEKHAR, Jeelani SYED, Quaizar VOHRA
  • Publication number: 20110238816
    Abstract: In some embodiments, a network management module is operatively coupled to a set of edge devices that are coupled to a set of peripheral processing devices. The network management module can receive a signal associated with a broadcast protocol from an edge device from the set of edge devices in response to that edge device being operatively coupled to a switch fabric. The network management module can provision that edge device in response to receiving the signal. The network management module can define multiple network control entities at the set of edge devices such that each network control entity from the multiple network control entities can provide forwarding-state information associated with at least one peripheral processing device from the set of peripheral processing devices to at least one remaining network control entity from the multiple network control entities using a selective protocol.
    Type: Application
    Filed: December 15, 2010
    Publication date: September 29, 2011
    Applicant: Juniper Networks, Inc.
    Inventors: Quaizar Vohra, Ravi Shekhar, Umesh Kondur, Arijit Sarcar
  • Publication number: 20100296414
    Abstract: Virtual Private Networks (VPNs) are supported in which customers may use popular internet gateway protocol (IGPs) without the need to convert such IGPs, running on customer devices to a single protocol, such as the border gateway protocol (BGP). Scaling problems, which might otherwise occur when multiple instances of an IGP flood link state information, are avoided by using a flooding topology which is smaller than a forwarding topology. The flooding topology may be a fully connected sub-set of the forwarding topology.
    Type: Application
    Filed: August 6, 2010
    Publication date: November 25, 2010
    Inventors: Quaizar Vohra, Nischal Sheth
  • Patent number: 7792987
    Abstract: Virtual Private Networks (VPNs) are supported in which customers may use popular internet gateway protocol (IGPs) without the need to convert such IGPs, running on customer devices to a single protocol, such as the border gateway protocol (BGP). Scaling problems, which might otherwise occur when multiple instances of an IGP flood link state information, are avoided by using a flooding topology which is smaller than a forwarding topology. The flooding topology may be a fully connected sub-set of the forwarding topology.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: September 7, 2010
    Assignee: Juniper Networks, Inc.
    Inventors: Quaizar Vohra, Nischal Sheth
  • Publication number: 20100165876
    Abstract: In one embodiment, a method includes detecting a virtual resource hosted by a host device, selecting a configuration template associated with the virtual resource, and providing a provisioning instruction to a virtual switch module hosted by the host device based on the configuration template. The host device is operatively coupled to a network device. The detecting is at the network device; the selecting is at the network device; and the providing is at the network device. The virtual switch module is in communication with the virtual resource. The configuration template associated with the virtual resource is selected from a library of configuration templates accessible to the network device.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventors: Amit Shukla, Arthi Ayyangar, Vijayabhaskar Annamalai Kalusivalingam, Quaizar Vohra