Patents by Inventor Ramana Mellacheruvu

Ramana Mellacheruvu 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: 10904146
    Abstract: Systems, methods, and non-transitory computer-readable storage media for performing hierarchical routing are disclosed. The method includes identifying routes in a computer network and arranging those routes in two separate routing tables. The first routing table is stored on a first module and the second routing table is stored on a second module.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: January 26, 2021
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ayan Banerjee, Ramana Mellacheruvu, Abhishek Saxena, Vishal Jain, Luca Cafiero
  • Patent number: 10374952
    Abstract: Various embodiments are disclosed for increasing Layer-3 LPM (longest prefix match) routing database in a network platform. In some embodiments, chipsets in fabric modules (FMs) can be partitioned into multiple banks. Network traffic can be directed towards a corresponding bank in the FMs by using a LPM table on a line card (LC). Entries in the LPM table on the LC can be programmed either statically or dynamically based upon LPM routes that are dynamically learned.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: August 6, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ayan Banerjee, Sameer Merchant, Ramana Mellacheruvu, Ramesh V. N. Ponnapalli, Srinivasan Ramabadran
  • Publication number: 20190020585
    Abstract: Systems, methods, and non-transitory computer-readable storage media for performing hierarchical routing are disclosed. The method includes identifying routes in a computer network and arranging those routes in two separate routing tables. The first routing table is stored on a first module and the second routing table is stored on a second module.
    Type: Application
    Filed: September 17, 2018
    Publication date: January 17, 2019
    Inventors: Ayan Banerjee, Ramana Mellacheruvu, Abhishek Saxena, Vishal Jain, Luca Cafiero
  • Patent number: 10182496
    Abstract: Systems and approaches are provided for optimizing the Spanning Tree Protocol (STP) in a switched network. STP port type for a network infrastructure device can be controlled based on the dynamically discovered neighbor device type of the directly connected peer of the device using the Link Level Discovery Protocol (LLDP). LLDP can provide system capabilities of a link level peer to identify whether the link level peer is a host or a network infrastructure device. In various embodiments, the exchange of system capabilities can the trigger the configuration of an STP port as a network port for ports connected to network infrastructure devices or edge ports for ports directly connected to host devices.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: January 15, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Abhishek Saxena, Ramana Mellacheruvu, Parag Deshpande
  • Patent number: 10079761
    Abstract: Systems, methods, and non-transitory computer-readable storage media for performing hierarchical routing are disclosed. The method includes identifying routes in a computer network and arranging those routes in two separate routing tables. The first routing table is stored on a first module and the second routing table is stored on a second module.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: September 18, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Ayan Banerjee, Ramana Mellacheruvu, Abhishek Saxena, Vishal Jain, Luca Cafiero
  • Publication number: 20180048568
    Abstract: Various embodiments are disclosed for increasing Layer-3 LPM (longest prefix match) routing database in a network platform. In some embodiments, chipsets in fabric modules (FMs) can be partitioned into multiple banks. Network traffic can be directed towards a corresponding bank in the FMs by using a LPM table on a line card (LC). Entries in the LPM table on the LC can be programmed either statically or dynamically based upon LPM routes that are dynamically learned.
    Type: Application
    Filed: October 24, 2017
    Publication date: February 15, 2018
    Inventors: Ayan Banerjee, Sameer Merchant, Ramana Mellacheruvu, Ramesh V.N. Ponnapalli, Srinivasan Ramabadran
  • Patent number: 9825857
    Abstract: Various embodiments are disclosed for increasing Layer-3 LPM (longest prefix match) routing database in a network platform. In some embodiments, chipsets in fabric modules (FMs) can be partitioned into multiple banks. Network traffic can be directed towards a corresponding bank in the FMs by using a LPM table on a line card (LC). Entries in the LPM table on the LC can be programmed either statically or dynamically based upon LPM routes that are dynamically learned.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: November 21, 2017
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Ayan Banerjee, Sameer Merchant, Ramana Mellacheruvu, Ramesh V. N. Ponnapalli, Srinivasan Ramabadran
  • Patent number: 9742673
    Abstract: A plurality of line cards with each line card having a respective network forwarding engine and a respective outgoing interface (OIF) list and at least one fabric module communicatively coupled with each line card with each fabric module can have a respective network forwarding engine. The local OIF list can be asymmetrically programmed. The network forwarding engine of a line card can be configured to receive a multicast packet, compare a multicast address associate with the received multicast packet with entries in the local OIF list of the line card and forward the received multicast packet to at least one interface associated with the multicast address in response to the comparison resulting in a match.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: August 22, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Ayan Banerjee, Srinivasan Ramabadran, Mehak Mahajan, Raghava Sivaramu, Nataraj Bacthu, Raja Rao Tadimeti, Madhava Rao Cheethirala, Ramana Mellacheruvu
  • Publication number: 20170207961
    Abstract: Systems and approaches are provided for optimizing the Spanning Tree Protocol (STP) in a switched network. STP port type for a network infrastructure device can be controlled based on the dynamically discovered neighbor device type of the directly connected peer of the device using the Link Level Discovery Protocol (LLDP). LLDP can provide system capabilities of a link level peer to identify whether the link level peer is a host or a network infrastructure device. In various embodiments, the exchange of system capabilities can the trigger the configuration of an STP port as a network port for ports connected to network infrastructure devices or edge ports for ports directly connected to host devices.
    Type: Application
    Filed: April 5, 2017
    Publication date: July 20, 2017
    Inventors: Abhishek Saxena, Ramana Mellacheruvu, Parag Deshpande
  • Patent number: 9655232
    Abstract: Systems and approaches are provided for optimizing the Spanning Tree Protocol (STP) in a switched network. STP port type for a network infrastructure device can be controlled based on the dynamically discovered neighbor device type of the directly connected peer of the device using the Link Level Discovery Protocol (LLDP). LLDP can provide system capabilities of a link level peer to identify whether the link level peer is a host or a network infrastructure device. In various embodiments, the exchange of system capabilities can the trigger the configuration of an STP port as a network port for ports connected to network infrastructure devices or edge ports for ports directly connected to host devices.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: May 16, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Abhishek Saxena, Ramana Mellacheruvu, Parag Deshpande
  • Patent number: 9509630
    Abstract: Methods and apparatus for segregating traffic are disclosed. In accordance with one embodiment, a traffic splitter identifies a set of links coupled to the traffic splitter, where the set of links includes two or more uplinks, wherein each of the two or more uplinks are implemented in a common physical media. The two or more uplinks include a LAN uplink coupled to a LAN and a SAN uplink coupled to a SAN. The traffic splitter prevents SAN traffic from reaching the LAN via the LAN uplink. In addition, the traffic splitter prevents LAN traffic from reaching the SAN via the SAN uplink.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: November 29, 2016
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Smitha Narayanaswamy, Ganesan Rajagopal, Sanjay Sane, Ramana Mellacheruvu, Umesh Mahajan
  • Publication number: 20150124655
    Abstract: Systems and approaches are provided for optimizing the Spanning Tree Protocol (STP) in a switched network. STP port type for a network infrastructure device can be controlled based on the dynamically discovered neighbor device type of the directly connected peer of the device using the Link Level Discovery Protocol (LLDP). LLDP can provide system capabilities of a link level peer to identify whether the link level peer is a host or a network infrastructure device. In various embodiments, the exchange of system capabilities can the trigger the configuration of an STP port as a network port for ports connected to network infrastructure devices or edge ports for ports directly connected to host devices.
    Type: Application
    Filed: August 13, 2014
    Publication date: May 7, 2015
    Inventors: Abhishek Saxena, Ramana Mellacheruvu, Parag Deshpande
  • Publication number: 20150124806
    Abstract: Systems, methods, and non-transitory computer-readable storage media for performing hierarchical routing are disclosed. The method includes identifying routes in a computer network and arranging those routes in two separate routing tables. The first routing table is stored on a first module and the second routing table is stored on a second module.
    Type: Application
    Filed: September 4, 2014
    Publication date: May 7, 2015
    Inventors: Ayan Banerjee, Ramana Mellacheruvu, Abhishek Saxena, Vishal Jain, Luca Cafiero
  • Publication number: 20150124684
    Abstract: A plurality of line cards with each line card having a respective network forwarding engine and a respective outgoing interface (OIF) list and at least one fabric module communicatively coupled with each line card with each fabric module can have a respective network forwarding engine. The local OIF list can be asymmetrically programmed. The network forwarding engine of a line card can be configured to receive a multicast packet, compare a multicast address associate with the received multicast packet with entries in the local OIF list of the line card and forward the received multicast packet to at least one interface associated with the multicast address in response to the comparison resulting in a match.
    Type: Application
    Filed: September 4, 2014
    Publication date: May 7, 2015
    Inventors: Ayan Banerjee, Srinivasan Ramabadran, Mehak Mahajan, Raghava Sivaramu, Nataraj Bacthu, Raja Rao Tadimeti, Madhava Rao Cheethirala, Ramana Mellacheruvu
  • Publication number: 20150124633
    Abstract: Various embodiments are disclosed for increasing Layer-3 LPM (longest prefix match) routing database in a network platform. In some embodiments, chipsets in fabric modules (FMs) can be partitioned into multiple banks. Network traffic can be directed towards a corresponding bank in the FMs by using a LPM table on a line card (LC). Entries in the LPM table on the LC can be programmed either statically or dynamically based upon LPM routes that are dynamically learned.
    Type: Application
    Filed: July 31, 2014
    Publication date: May 7, 2015
    Inventors: Ayan Banerjee, Sameer Merchant, Ramana Mellacheruvu, Ramesh V.N. Ponnapalli, Srinivasan Ramabadran
  • Publication number: 20150103840
    Abstract: Methods and apparatus for segregating traffic are disclosed. In accordance with one embodiment, a traffic splitter identifies a set of links coupled to the traffic splitter, where the set of links includes two or more uplinks, wherein each of the two or more uplinks are implemented in a common physical media. The two or more uplinks include a LAN uplink coupled to a LAN and a SAN uplink coupled to a SAN. The traffic splitter prevents SAN traffic from reaching the LAN via the LAN uplink. In addition, the traffic splitter prevents LAN traffic from reaching the SAN via the SAN uplink.
    Type: Application
    Filed: December 17, 2014
    Publication date: April 16, 2015
    Inventors: Smitha Narayanaswamy, Ganesan Rajagopal, Sanjay Sane, Ramana Mellacheruvu, Umesh Mahajan
  • Patent number: 8949662
    Abstract: In one embodiment, an indication of a fault condition is received relating to a first service running on a physical device in a computer network. The first service is associated with a first virtual device context defined on the physical device. Then, the first service is disabled without affecting operation of a second service on the physical device. The second service is associated with a second virtual device context defined on the physical device. In another embodiment, a first virtual device context is created on a physical device in a computer network. Then, a second virtual device context is created on the physical device. The first virtual device context may then be managed independently of the second virtual device context such that resources assigned to a virtual device context are managed without affecting management of another virtual device context.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: February 3, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Ronak Desai, Ramana Mellacheruvu, Dino Farinacci, Amitkumar Patel, Umesh Mahajan
  • Patent number: 8917732
    Abstract: Methods and apparatus for segregating traffic are disclosed. In accordance with one embodiment, a traffic splitter identifies a set of links coupled to the traffic splitter, where the set of links includes two or more uplinks, wherein each of the two or more uplinks are implemented in a common physical media. The two or more uplinks include a LAN uplink coupled to a LAN and a SAN uplink coupled to a SAN. The traffic splitter prevents SAN traffic from reaching the LAN via the LAN uplink. In addition, the traffic splitter prevents LAN traffic from reaching the SAN via the SAN uplink.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: December 23, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Smitha Narayanaswamy, Ganesan Rajagopal, Sanjay Sane, Ramana Mellacheruvu, Umesh Mahajan
  • Patent number: 8531991
    Abstract: A solution is provided wherein the interfaces between multiple chassis (e.g., edge switches) in a network of layer 2 devices and a spanning tree device are treated as a single emulated switch. This emulated switch effectively enables two different views to the two different sides. Thus, frames from the network of layer 2 switches destined to any port of the emulated switch may take any of the links (through any of the physical switches), thereby enabling effective load-balancing for frames traveling from the layer 2 network side into the spanning tree device. Meanwhile the spanning tree device does not recognize an illegal loop in its connection to two different edge switches as it views the two links as a single logical EtherChannel.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: September 10, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Sanjay Sane, Lawrence Kreeger, Thomas Edsall, Elango Ganesan, Soei-Shin Hang, Ramana Mellacheruvu
  • Publication number: 20120278458
    Abstract: In one embodiment, an indication of a fault condition is received relating to a first service running on a physical device in a computer network. The first service is associated with a first virtual device context defined on the physical device. Then, the first service is disabled without affecting operation of a second service on the physical device. The second service is associated with a second virtual device context defined on the physical device. In another embodiment, a first virtual device context is created on a physical device in a computer network. Then, a second virtual device context is created on the physical device. The first virtual device context may then be managed independently of the second virtual device context such that resources assigned to a virtual device context are managed without affecting management of another virtual device context.
    Type: Application
    Filed: July 6, 2012
    Publication date: November 1, 2012
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Ronak Desai, Ramana Mellacheruvu, Dino Farinacci, Amitkumar Patel, Umesh Mahajan