Patents by Inventor Ramchander R. Nadipally

Ramchander R. Nadipally 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).

  • DHCP layer 2 relay in VXLAN overlay fabric
    Patent number: 11425044
    Abstract: This technology enables a dynamic host configuration protocol (“DHCP”) Layer 2 relay in a Virtual Extensible Local Area Network (“VXLAN”) overlay fabric. A host device broadcasts a configuration request, such as a DHCP discover, across an Ethernet virtual private network (“EVPN”) overlay fabric. The DHCP discover is intercepted by a VXLAN Tunnel End Point (“VTEP”) device with Layer 2 bridging functionality. The VTEP device selects a centralized gateway (“CGW”) device with Layer 3 relay functionality as a destination for the DHCP discover. The VTEP device encapsulates the DHCP discover with a unicast VXLAN header comprising the media access control (“MAC”) address of the CGW device and transmits the encapsulated DHCP discover to the CGW device, resolving the destination address associated with the broadcast. The CGW device transmits the DHCP discover to an Internet Protocol (“IP”) address associated with a DHCP server that is external to the EVPN overlay fabric.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: August 23, 2022
    Assignee: Cisco Technology, Inc.
    Inventors: Ramchander R. Nadipally, Ajinkya Abhay Chouthai, Rajagopal Venkatraman, Xiangqun Li, Rahul Kachalia
  • DHCP LAYER 2 RELAY IN VXLAN OVERLAY FABRIC
    Publication number: 20220124037
    Abstract: This technology enables a dynamic host configuration protocol (“DHCP”) Layer 2 relay in a Virtual Extensible Local Area Network (“VXLAN”) overlay fabric. A host device broadcasts a configuration request, such as a DHCP discover, across an Ethernet virtual private network (“EVPN”) overlay fabric. The DHCP discover is intercepted by a VXLAN Tunnel End Point (“VTEP”) device with Layer 2 bridging functionality. The VTEP device selects a centralized gateway (“CGW”) device with Layer 3 relay functionality as a destination for the DHCP discover. The VTEP device encapsulates the DHCP discover with a unicast VXLAN header comprising the media access control (“MAC”) address of the CGW device and transmits the encapsulated DHCP discover to the CGW device, resolving the destination address associated with the broadcast. The CGW device transmits the DHCP discover to an Internet Protocol (“IP”) address associated with a DHCP server that is external to the EVPN overlay fabric.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 21, 2022
    Inventors: Ramchander R. Nadipally, Ajinkya Abhay Chouthai, Rajagopal Venkatraman, Xiangqun Li, Rahul Kachalia