Patents by Inventor ROSHAN LAL

ROSHAN LAL 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: 11082336
    Abstract: Techniques for utilizing Software-Defined Networking (SDN) controllers and network border leaf nodes of respective cloud computing networks to configure a data transmission route for a multicast group. Each border leaf node may maintain a respective external sources database, including a number of records indicating associations between a multicast data source, one or more respective border leaf nodes disposed in the same network as the multicast data source, and network capability information. A border leaf node, disposed in the same network as a multicast data source, may broadcast a local source discovery message to all border leaf nodes in remote networks to which it is communicatively coupled. A border leaf node may also communicate network capability information associated with one or more remote networks to a local SDN controller. The SDN controller may utilize the network capability information to configure a data transmission route to one or more destination nodes.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: August 3, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: Francesco Meo, Stig Ingvar Venaas, Roshan Lal, Rishi Chhibber, Ravinder Vissapragada
  • Publication number: 20210218671
    Abstract: Techniques for utilizing Software-Defined Networking (SDN) controllers and network border leaf nodes of respective cloud computing networks to configure a data transmission route for a multicast group. Each border leaf node may maintain a respective external sources database, including a number of records indicating associations between a multicast data source, one or more respective border leaf nodes disposed in the same network as the multicast data source, and network capability information. A border leaf node, disposed in the same network as a multicast data source, may broadcast a local source discovery message to all border leaf nodes in remote networks to which it is communicatively coupled. A border leaf node may also communicate network capability information associated with one or more remote networks to a local SDN controller. The SDN controller may utilize the network capability information to configure a data transmission route to one or more destination nodes.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 15, 2021
    Inventors: Francesco Meo, Stig Ingvar Venaas, Roshan Lal, Rishi Chhibber, Ravinder Vissapragada
  • Publication number: 20200389413
    Abstract: In one embodiment, a method includes receiving a request to establish a path for a data stream from the first network apparatus to a second network apparatus, where the request is associated with a requested bandwidth for the data stream, and where the first network apparatus and the second network apparatus are connected by a link aggregation group including a number of physical links, accessing bandwidth information representing a number of remaining bandwidths of the respective multiple of physical links, determining that the requested bandwidth is not satisfied by any of the number of remaining bandwidths of the number of physical links, and sending a response rejecting the request to establish the path.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 10, 2020
    Inventors: Roshan Lal, Rishi Chhibber, Padmanab Pathikonda, Lakshmi Priya Sarma, Francesco Meo
  • Patent number: 10862826
    Abstract: In one illustrative example, a switch for use in a network fabric which includes a plurality on interconnected switches configured to facilitate communication of IP multicast traffic amongst host devices may be provided. The switch may receive, from a controller, a global set of host policies associated with the plurality of switches of the network fabric. The switch may select, from the global set of host policies, a local subset of host policies applicable to the switch. The switch may grant or deny admission of host devices to receive or send IP multicast traffic flows in the network fabric according to the selected, local subset of host policies.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: December 8, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Vaibhav Dhage, Varun Manchanda, Rishi Chhibber, Meo Francesco, Roshan Lal, Padmanab Pathikonda
  • Publication number: 20200382242
    Abstract: Multicast error detection and recovery may be provided. A join request for a multicast stream may be sent from a first network node to a second network node. The join request may be sent over a first link of a plurality of links between the first network node and the second network node. A redirect message indicating that the second network node cannot accommodate the join request may be received by the first network node from the second network node. In response to receiving the redirect message, the join request for the multicast stream may not be sent on a second link of the plurality of links by the first network node to the second network node. And in response to receiving the redirect message, an alternate upstream network node may be determined by the first network node to send the join request for the multicast stream to.
    Type: Application
    Filed: May 31, 2019
    Publication date: December 3, 2020
    Applicant: Cisco Technology, Inc.
    Inventors: Roshan LAL, Rishi CHHIBBER, Mankamana Prasad MISHRA, Peter PSENAK, Padmanab PATHIKONDA, Francesco MEO, Anand Kumar SINGH
  • Patent number: 10833808
    Abstract: Multicast error detection and recovery may be provided. A join request for a multicast stream may be sent from a first network node to a second network node. The join request may be sent over a first link of a plurality of links between the first network node and the second network node. A redirect message indicating that the second network node cannot accommodate the join request may be received by the first network node from the second network node. In response to receiving the redirect message, the join request for the multicast stream may not be sent on a second link of the plurality of links by the first network node to the second network node. And in response to receiving the redirect message, an alternate upstream network node may be determined by the first network node to send the join request for the multicast stream to.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: November 10, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Roshan Lal, Rishi Chhibber, Mankamana Prasad Mishra, Peter Psenak, Padmanab Pathikonda, Francesco Meo, Anand Kumar Singh
  • Publication number: 20200344155
    Abstract: In one illustrative example, a multicast traceroute facility for a plurality of interconnected router nodes which are configured to communicate IP multicast traffic amongst hosts is described. The multicast traceroute facility may be for use in processing a multicast traceroute batch query packet which indicates a batch of multicast traceroute queries of a batch query, for identifying a plurality of traced paths for a batch of IP multicast traffic flows. Each identified traced path may be associated with one or more links, each of which has a link metric that satisfies a requested link metric (e.g. a link bandwidth). Resources for satisfying the requested link metric may be reserved for a predetermined or specified time period. The batch of IP multicast traffic flows may be established via at least some of the interconnected router nodes according to the plurality of traced paths identified from the query packet processing.
    Type: Application
    Filed: April 24, 2019
    Publication date: October 29, 2020
    Inventors: Rishi Chhibber, Roshan Lal, Rahul Savarapu Parameswaran, Subhasri Dhesikan, Mankamana Prasad Mishra, Stig Ingvar Venaas
  • Publication number: 20200336429
    Abstract: In service flow capability updating in a guaranteed bandwidth multicast network may be provided. First, a node may determine that a bandwidth requirement of a flow has changed to a new bandwidth value. Then, in response to determining that the bandwidth requirement of the flow has changed to the new bandwidth value, an ingress capacity value may be updated in an interface usage table for a Reverse Path Forwarding (RPF) interface corresponding to the flow. The RPF interface may be disposed on a network device. Next, in response to determining that the bandwidth requirement of the flow has changed to the new bandwidth value, an egress capacity value may be updated in the interface usage table for an Outgoing Interface (OIF) corresponding to the flow. The OIF may be disposed on the network device.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 22, 2020
    Applicant: Cisco Technology, Inc.
    Inventors: Padmanab Pathikonda, Rishi Chhibber, Roshan Lal, Varun Manchanda, Francesco Meo, Vaibhav Dhage
  • Publication number: 20200259764
    Abstract: In one illustrative example, a switch for use in a network fabric which includes a plurality on interconnected switches configured to facilitate communication of IP multicast traffic amongst host devices may be provided. The switch may receive, from a controller, a global set of host policies associated with the plurality of switches of the network fabric. The switch may select, from the global set of host policies, a local subset of host policies applicable to the switch. The switch may grant or deny admission of host devices to receive or send IP multicast traffic flows in the network fabric according to the selected, local subset of host policies.
    Type: Application
    Filed: February 12, 2019
    Publication date: August 13, 2020
    Inventors: Vaibhav Dhage, Varun Manchanda, Rishi Chhibber, Meo Francesco, Roshan Lal, Padmanab Pathikonda
  • Patent number: 10700938
    Abstract: In one example embodiment, a network node of a plurality of network nodes in a multicast path is configured to provide a multicast flow from a source of the multicast flow to a receiver of the multicast flow. The network node obtains, from the receiver in a reverse direction of the multicast path, configuration instructions specifying a configuration of the multicast flow. The network node implements the configuration of the multicast flow in accordance with the configuration instructions, and provides the configuration instructions toward the source in the reverse direction of the multicast path.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: June 30, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Rishi Chhibber, Roshan Lal, Padmanab Pathikonda
  • Patent number: 10608924
    Abstract: In one illustrative example, an IP network media data router includes a spine and leaf switch architecture operative to provide IP multicast delivery of media data from source devices to receiver devices without the overhead communication with a controller. The architecture can include K spine switches, K sets of L leaf switches, M data links between each leaf switch, and a plurality of bidirectional data ports connected to each leaf switch for a guaranteed non-blocking IP multicast delivery of data. A deterministic hash function a used on both the first hop router and the last hop router to ensure the same spine node is selected for flow stitching. Accordingly, without the extra communication with a centralized controller, the right spine for establishing a multicast flow can be chosen using the deterministic hash function and the distributed resource information stored on each node.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: March 31, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Padmanab Pathikonda, Rishi Chhibber, Roshan Lal, Ann Roshini Paul, Anand Kumar Singh, Nataraj Batchu
  • Publication number: 20200044929
    Abstract: In one example embodiment, a network node of a plurality of network nodes in a multicast path is configured to provide a multicast flow from a source of the multicast flow to a receiver of the multicast flow. The network node obtains, from the receiver in a reverse direction of the multicast path, configuration instructions specifying a configuration of the multicast flow. The network node implements the configuration of the multicast flow in accordance with the configuration instructions, and provides the configuration instructions toward the source in the reverse direction of the multicast path.
    Type: Application
    Filed: July 31, 2018
    Publication date: February 6, 2020
    Inventors: Rishi Chhibber, Roshan Lal, Padmanab Pathikonda
  • Publication number: 20200028774
    Abstract: In one illustrative example, an IP network media data router includes a spine and leaf switch architecture operative to provide IP multicast delivery of media data from source devices to receiver devices without the overhead communication with a controller. The architecture can include K spine switches, K sets of L leaf switches, M data links between each leaf switch, and a plurality of bidirectional data ports connected to each leaf switch for a guaranteed non-blocking IP multicast delivery of data. A deterministic hash function a used on both the first hop router and the last hop router to ensure the same spine node is selected for flow stitching. Accordingly, without the extra communication with a centralized controller, the right spine for establishing a multicast flow can be chosen using the deterministic hash function and the distributed resource information stored on each node.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 23, 2020
    Inventors: PADMANAB PATHIKONDA, RISHI CHHIBBER, ROSHAN LAL, ANN ROSHINI PAUL, ANAND KUMAR SINGH, NATARAJ BATCHU
  • Publication number: 20170056365
    Abstract: The present invention relates to pharmaceutical compositions comprising a solid dispersion of dapagliflozin and one or more pharmaceutically acceptable excipients, and processes for their preparation. It further relates to a method of treating diabetes using said pharmaceutical compositions.
    Type: Application
    Filed: February 27, 2015
    Publication date: March 2, 2017
    Applicant: SUN PHARMACEUTICAL INDUSTRIES LIMITED
    Inventors: Suhani SINHA, Roshan Lal SANDAL, Ravi KOCHHAR
  • Publication number: 20160015708
    Abstract: The present invention relates to a stable oral pharmaceutical dosage form comprising imatinib mesylate and one or more pharmaceutically acceptable excipients wherein the amount of imatinib calculated as free base is more than 80% by weight based on the total weight of the oral pharmaceutical dosage form, and wherein the oral dosage form does not show polymorphic conversion after storage at 40° C. and 75% relative humidity for three months. It also relates to processes for the preparation thereof.
    Type: Application
    Filed: February 15, 2013
    Publication date: January 21, 2016
    Inventors: Ravi KOCHHAR, Annavarapu RAMESH, Suneel Kumar VASIREDDY, Roshan Lal SANDAL
  • Publication number: 20110097414
    Abstract: The present invention provides a pharmaceutical composition comprising adsorbate of fenofibrate or salt thereof or fenofibrate adsorbed on a pharmaceutically acceptable adsorbent and optionally one or more pharmaceutically acceptable excipients. The invention also relates to processes for the preparation of such compositions.
    Type: Application
    Filed: February 26, 2008
    Publication date: April 28, 2011
    Inventors: Roshan lal Sandal, Vikrant Thakkar, Ramakant Kashinath Gundu, Rahul Sudhakar Dabre, Narayanan Murali, Girish Kumar Jain
  • Patent number: 4036924
    Abstract: A textile material is molded by preheating to its transition temperature and then rapidly deformed by stretching without cooling. The deformation is maintained for a certain time at the preheating temperature or higher. The material is then quickly cooled. An apparatus for molding particularly fabric has a heat chamber having an opening over which the fabric is fastened, and a molding body having the desired shape and movable towards the heat chamber so as to stretch the fabric while entering partly through the opening. The molding body and heat chamber can be heated and the heat chamber may be evacuated or supplied with air under pressure for cooling the fabric.
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: July 19, 1977
    Assignee: Svenska Textilforskningsinstitutet
    Inventors: Roshan Lal Shishoo, Sara Inga-Lill Alfredsson
  • Patent number: 3961458
    Abstract: Process for reducing wrinkling of textile products at storing or transport comprising conditioning in air at a R.H. of 0-30% and at 25.degree.C, enclosing in moisture-proof material, evacuating the package, storing at a temperature not higher than 30.degree.C, opening the package and reconditioning in an unloaded state at a R.H. of at least 55% and at 20.degree.-45.degree.C, preferably after a first reconditioning at a R.H. of at most 35% and at 25.degree.C.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: June 8, 1976
    Assignee: Svenska Textilforskningsinstitutet
    Inventors: Roshan Lal Shishoo, Erik Malte Lundell