Patents by Inventor Pathangi Janardhanan

Pathangi Janardhanan 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: 10389655
    Abstract: Embodiments of the present invention include systems and methods for minoring data packets upon triggering of events in a network device. In the network device, a usage event is specified, where occurrence of the usage event is indeterminable, at least partially, from the information contained in the data packets. When the network device receives a data packet via an input port, it processes the data packet as the data packet flows along a pipeline in the network device. If a specified usage event is triggered while being processed, the data packet is mirrored via an output port of the network device so that the mirrored data packet may be analyzed by an analysis engine.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: August 20, 2019
    Assignee: DELL PRODUCTS L.P.
    Inventor: Pathangi Janardhanan
  • Patent number: 9698995
    Abstract: An information handling system is provided. The information handling system includes a first hypervisor running on a first host and a second hypervisor running on a second host. The first hypervisor managing a first virtual switch, and the second hypervisor managing a second virtual switch. The information handling system also includes a plurality of virtual machines (VMs), including a first VM, which is part of a first tenant, running on the first host, and a second VM, part of a second tenant, running on the second host. The first virtual switch has a mapping in memory that maps a customer-specific multicast IP address, used by the plurality of VMs to indicate a multicast group that includes VMs on the first and second tenants, to a global multicast IP address used by the first and second hosts.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 4, 2017
    Assignee: DELL PRODUCTS L.P.
    Inventors: Anoop Ghanwani, Krishnamurthy Subramanian, Mohnish Anumala, Shivakumar Sundaram, Pathangi Janardhanan
  • Patent number: 9584397
    Abstract: Aspects of the present invention include extending routing capabilities to improve networking efficiencies. In embodiments, a spine-leaf network configuration may be provisioned as a single router to solve at least two issues: (1) local routing within a leaf; and (2) scalability of the hardware ARP table. In embodiments, one or more tables in the leaf node may be programmed so that data traffic coming from a first host in a first subnet or VLAN on the leaf and intended for a second host in a second subnet or VLAN on the leaf may be forwarded locally to the second host in the second subnet or VLAN without traversing to the spine layer.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: February 28, 2017
    Assignee: DELL PRODUCTS L.P.
    Inventors: Anoop Ghanwani, Krishnamurthy Subramanian, Pathangi Janardhanan, Shivakumar Sundaram, Mohnish Anumala
  • Publication number: 20160241409
    Abstract: An information handling system is provided. The information handling system includes a first hypervisor running on a first host and a second hypervisor running on a second host. The first hypervisor managing a first virtual switch, and the second hypervisor managing a second virtual switch. The information handling system also includes a plurality of virtual machines (VMs), including a first VM, which is part of a first tenant, running on the first host, and a second VM, part of a second tenant, running on the second host. The first virtual switch has a mapping in memory that maps a customer-specific multicast IP address, used by the plurality of VMs to indicate a multicast group that includes VMs on the first and second tenants, to a global multicast IP address used by the first and second hosts.
    Type: Application
    Filed: April 22, 2016
    Publication date: August 18, 2016
    Inventors: Anoop GHANWANI, Krishnamurthy Subramanian, Mohnish Anumala, Shivakumar Sundaram, Pathangi Janardhanan
  • Patent number: 9379945
    Abstract: Aspects of the present invention include an arbitrary N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the arbitrary N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 28, 2016
    Assignee: DELL PRODUCTS L.P.
    Inventors: Pathangi Janardhanan, Shivakumar Sundaram, Avinash Natarajan
  • Patent number: 9350558
    Abstract: An information handling system is provided. The information handling system includes a first hypervisor running on a first host and a second hypervisor running on a second host. The first hypervisor managing a first virtual switch, and the second hypervisor managing a second virtual switch. The information handling system also includes a plurality of virtual machines (VMs), including a first VM, which is part of a first tenant, running on the first host, and a second VM, part of a second tenant, running on the second host. The first virtual switch has a mapping in memory that maps a customer-specific multicast IP address, used by the plurality of VMs to indicate a multicast group that includes VMs on the first and second tenants, to a global multicast IP address used by the first and second hosts.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: May 24, 2016
    Assignee: Dell Products L.P.
    Inventors: Anoop Ghanwani, Krishnamurthy Subramanian, Mohnish Anumala, Shivakumar Sundaram, Pathangi Janardhanan
  • Patent number: 9350619
    Abstract: Aspects of the present invention include an arbitrary N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the arbitrary N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: May 24, 2016
    Assignee: DELL PRODUCTS L.P.
    Inventors: Pathangi Janardhanan, Shivakumar Sundaram, Avinash Natarajan
  • Publication number: 20160087916
    Abstract: Embodiments of the present invention include systems and methods for minoring data packets upon triggering of events in a network device. In the network device, a usage event is specified, where occurrence of the usage event is indeterminable, at least partially, from the information contained in the data packets. When the network device receives a data packet via an input port, it processes the data packet as the data packet flows along a pipeline in the network device. If a specified usage event is triggered while being processed, the data packet is mirrored via an output port of the network device so that the mirrored data packet may be analyzed by an analysis engine.
    Type: Application
    Filed: September 22, 2014
    Publication date: March 24, 2016
    Applicant: DELL PRODUCTS L.P.
    Inventor: Pathangi JANARDHANAN
  • Patent number: 9288138
    Abstract: Aspects of the present invention include an N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 15, 2016
    Assignee: DELL PRODUCTS L.P.
    Inventors: Anoop Ghanwani, Krishnamurthy Subramanian, Pathangi Janardhanan, Shivakumar Sundaram, Mohnish Anumala
  • Patent number: 9264308
    Abstract: Aspects of the present invention include an N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: February 16, 2016
    Assignee: DELL PRODUCTS L.P.
    Inventors: Mohnish Anumala, Krishnamurthy Subramanian, Pathangi Janardhanan, Anoop Ghanwani, Shivakumar Sundaram, Avinash Natarajan
  • Publication number: 20150256405
    Abstract: Aspects of the present invention include an arbitrary N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the arbitrary N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 10, 2015
    Applicant: DELL PRODUCTS L.P.
    Inventors: Pathangi Janardhanan, Shivakumar Sundaram, Avinash Natarajan
  • Publication number: 20150188759
    Abstract: Aspects of the present invention include an N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 2, 2015
    Applicant: DELL PRODUCTS L.P.
    Inventors: Anoop GHANWANI, Krishnamurthy SUBRAMANIAN, Pathangi JANARDHANAN, Shivakumar SUNDARAM, Mohnish ANUMALA, Avinash NATARAJAN
  • Publication number: 20150188805
    Abstract: Aspects of the present invention include an N-Node virtual link trunking (VLT) system comprising a set of N nodes collectively provide a logical fabric-level view that is consistent across the set of N nodes. Embodiments of the N-Node VLT system comprise a control plane mechanism to provide Layer 2 multipathing between access network devices (switches or servers) and the core network. The N-Node VLT system provides a loop-free topology with active-active load-sharing of uplinks from access to the core. Accordingly, the N-Node VLT system eliminates the disadvantage of Spanning Tree Protocol (STP) (active-standby links) by allowing link aggregation group (LAG) terminations on multiple separate distribution or core switches and also supporting a loop-free topology. Additional benefits of an N-Node VLT system include, but are not limited to, higher resiliency, improved link utilization, and improved manageability of the network.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 2, 2015
    Applicant: DELL PRODUCTS L.P.
    Inventors: Anoop GHANWANI, Krishnamurthy SUBRAMANIAN, Pathangi JANARDHANAN, Shivakumar SUNDARAM, Mohnish ANUMALA
  • Publication number: 20150188808
    Abstract: Aspects of the present invention include extending routing capabilities to improve networking efficiencies. In embodiments, a spine-leaf network configuration may be provisioned as a single router to solve at least two issues: (1) local routing within a leaf; and (2) scalability of the hardware ARP table. In embodiments, one or more tables in the leaf node may be programmed so that data traffic coming from a first host in a first subnet or VLAN on the leaf and intended for a second host in a second subnet or VLAN on the leaf may be forwarded locally to the second host in the second subnet or VLAN without traversing to the spine layer.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 2, 2015
    Applicant: DELL PRODUCTS L.P.
    Inventors: Anoop GHANWANI, Krishnamurthy SUBRAMANIAN, Pathangi JANARDHANAN, Shivakumar SUNDARAM, Mohnish ANUMALA
  • Publication number: 20140192804
    Abstract: An information handling system is provided. The information handling system includes a first hypervisor running on a first host and a second hypervisor running on a second host. The first hypervisor managing a first virtual switch, and the second hypervisor managing a second virtual switch. The information handling system also includes a plurality of virtual machines (VMs), including a first VM, which is part of a first tenant, running on the first host, and a second VM, part of a second tenant, running on the second host. The first virtual switch has a mapping in memory that maps a customer-specific multicast IP address, used by the plurality of VMs to indicate a multicast group that includes VMs on the first and second tenants, to a global multicast IP address used by the first and second hosts.
    Type: Application
    Filed: January 9, 2013
    Publication date: July 10, 2014
    Applicant: Dell Products L.P.
    Inventors: Anoop Ghanwani, Krishnamurthy Subramanian, Mohnish Anumala, Shivakumar Sundaram, Pathangi Janardhanan