Patents by Inventor Phaniraj Vattem

Phaniraj Vattem 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: 11290373
    Abstract: Embodiments are directed to a process and system for avoiding temporary traffic loss in a network having first and second computers and provider edge devices, by retaining, in each provider edge device, path information including a MAC address for the first host computer in a control plane as a dynamic address, and maintaining, in each provider edge device, its own routing table listing network addresses of the other provider edge devices as multi-homed peers. A failure recovery process in each provider edge devices advertises all multi-homed peer network addresses as addresses that each respective provider edge device has dynamically learnt in the control plane such that when a provider edge device receives a route with a locally connected host, it re-advertises the host address on its own.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: March 29, 2022
    Assignee: Dell Products LP
    Inventors: Mukesh Moopath Velayudhan, Phaniraj Vattem, Anoop Ghanwani
  • Publication number: 20210377207
    Abstract: Described herein are systems and methods for host multihoming with no state synchronization between top-of-rack (ToR) switches coupled to multiple hosts. ToR switches of a multi-homing system share a virtual MAC address and respond to Address Resolution Protocol (ARP) requests and/or Neighbor Discovery (ND) solicitations for a default gateway IP address from the host with the virtual MAC address. Ports on a ToR switch may be configured either with a static ARP and/or ND entry, or be configured to learn via a discovery protocol. The lightweight host multihoming system may have modified flooding behavior, ARP/ND handling, and data path forwarding. ARP/ND traffic from a host is processed by a ToR switch, while other multicast traffic may be discarded. Embodiments of the host multihoming system provide a lightweight solution for software implementation with minimal changes imposed on the host or network design.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 2, 2021
    Applicant: DELL PRODUCTS L.P.
    Inventors: Anoop GHANWANI, Anandaraj MAHARAJAN, Phaniraj VATTEM
  • Publication number: 20200092200
    Abstract: Embodiments are directed to a process and system for avoiding temporary traffic loss in a network having first and second computers and provider edge devices, by retaining, in each provider edge device, path information including a MAC address for the first host computer in a control plane as a dynamic address, and maintaining, in each provider edge device, its own routing table listing network addresses of the other provider edge devices as multi-homed peers. A failure recovery process in each provider edge devices advertises all multi-homed peer network addresses as addresses that each respective provider edge device has dynamically learnt in the control plane such that when a provider edge device receives a route with a locally connected host, it re-advertises the host address on its own.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Mukesh Moopath Velayudhan, Phaniraj Vattem, Anoop Ghanwani
  • Patent number: 10536370
    Abstract: Embodiments are directed to a process and system for recovering from data link failure in a network, by retaining, in a first provider edge device, path information for a first host coupled to a second host over the network in a control plane, upon indication of withdrawal of the first host from a second provider edge device, starting a timer controlling a period of re-advertisement and re-routing to the first host, removing, in the first provider edge device, the first host from a data plane, and generating, in the first provider edge device, a new route to advertise the first host address to cause other provider edge devices to receive the new route and adjust their respective control plane routes prior to expiration of the timer.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: January 14, 2020
    Assignee: Dell Products LP
    Inventors: Mukesh Moopath Velayudhan, Phaniraj Vattem, Anoop Ghanwani
  • Patent number: 10425325
    Abstract: Embodiments are directed to a process and system for optimizing traffic paths for orphaned hosts in a VXLAN system, by configuring virtual link trunking (VLT) peers to advertise MAC addresses learned from all multi-homed hosts in the system using Anycast VXLAN tunnel endpoint-Internet Protocol address (VTEP-IP); configuring the virtual link trunking (VLT) peers to advertise MAC addresses learned from all single-homed hosts in the system using a secondary VTEP-IP; directing unicast traffic destined to the single-homed hosts to directly connected VLT peers using the Secondary VTEP-IP; and directing Broadcast, unknown unicast, and multi-cast (BUM) traffic destined to the single-homed hosts to directly connected VLT peers using the Inclusive Multicast Ethernet Tag route.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 24, 2019
    Assignee: Dell Products LP
    Inventors: Phaniraj Vattem, Mukesh Moopath Velayudhan, Anoop Ghanwani, Swaminathan Sundararaman, Mohan Ayalasomayajula, Bhavini Gada
  • Publication number: 20190132241
    Abstract: Embodiments are directed to a process and system for optimizing traffic paths for orphaned hosts in a VXLAN system, by configuring virtual link trunking (VLT) peers to advertise MAC addresses learned from all multi-homed hosts in the system using Anycast VXLAN tunnel endpoint-Internet Protocol address (VTEP-IP); configuring the virtual link trunking (VLT) peers to advertise MAC addresses learned from all single-homed hosts in the system using a secondary VTEP-IP; directing unicast traffic destined to the single-homed hosts to directly connected VLT peers using the Secondary VTEP-IP; and directing Broadcast, unknown unicast, and multi-cast (BUM) traffic destined to the single-homed hosts to directly connected VLT peers using the Inclusive Multicast Ethernet Tag route.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 2, 2019
    Inventors: Phaniraj Vattem, Mukesh Moopath Velayudhan, Anoop Ghanwani, Swaminathan Sundararaman, Mohan Ayalasomayajula, Bhavini Gada
  • Publication number: 20190052559
    Abstract: Embodiments are directed to a process and system for recovering from data link failure in a network, by retaining, in a first provider edge device, path information for a first host coupled to a second host over the network in a control plane, upon indication of withdrawal of the first host from a second provider edge device, starting a timer controlling a period of re-advertisement and re-routing to the first host, removing, in the first provider edge device, the first host from a data plane, and generating, in the first provider edge device, a new route to advertise the first host address to cause other provider edge devices to receive the new route and adjust their respective control plane routes prior to expiration of the timer.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 14, 2019
    Inventors: Mukesh Moopath Velayudhan, Phaniraj Vattem, Anoop Ghanwani