Patents by Inventor Pascal Thubert

Pascal Thubert 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: 10608843
    Abstract: In one embodiment, a server instructs one or more networking devices in a local area network (LAN) to form a virtual network overlay in the LAN that redirects traffic associated with a particular node in the LAN to the server. The server receives the redirected traffic associated with the particular node. The server trains a machine learning-based behavioral model for the particular node based on the redirected traffic. The server controls whether a particular redirected traffic flow associated with the node in the LAN is sent to a destination of the traffic flow using the trained behavioral model.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: March 31, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10608921
    Abstract: A particular fat tree network node stores default routing information indicating that the particular fat tree network node can reach a plurality of parent fat tree network nodes of the particular fat tree network node. The particular fat tree network node obtains, from a first parent fat tree network node of the plurality of parent fat tree network nodes, a negative disaggregation advertisement indicating that the first parent fat tree network node cannot reach a specific destination. The particular fat tree network node determines whether the first parent fat tree network node is the only parent fat tree network node of the plurality of parent fat tree network nodes that cannot reach the specific destination. If so, the particular fat tree network node installs supplemental routing information indicating that every parent fat tree network node except the first parent fat tree network node can reach the specific destination.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: March 31, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Eric Levy-Abegnoli, Jakob Heitz
  • Publication number: 20200092730
    Abstract: Various embodiments disclosed herein enable performing energy detection on a subset of a channel. In various embodiments, a method of performing energy detection is performed by a computing device. In various embodiments, the computing device includes a wireless transceiver, one or more processors, and a non-transitory memory. In various embodiments, the method includes performing energy detection on one or more overlapping portions of a first channel and a second channel. In some embodiments, the method includes determining whether a detected energy level from the energy detection satisfies a threshold. In some embodiments, the method includes transmitting a signal into the first channel based on the threshold being satisfied.
    Type: Application
    Filed: September 18, 2018
    Publication date: March 19, 2020
    Inventors: Pascal Thubert, Jerome Henry, Patrick Wetterwald, Eric Levy-Abegnoli
  • Publication number: 20200084135
    Abstract: In one embodiment, a method comprises generating a switched link layer topology from a source device to a destination device, the switched link layer topology comprising a first sequence of switching devices, a second sequence of switching devices, and one or more bridging links between the first and second sequences of switching devices; generating first and second chains of resilient link layer segments for respective first and second multi-hop link layer connections based on generating a sequence of link layer loops overlying the switched link layer topology, and setting for each of the first and second multi-hop link layer connections a corresponding set of connection blocks in each link layer loop; and causing replication of a data packet across the first and second multi-hop link layer connections, enabling a failure in the switched link layer topology to be bypassed based on removing at least one of the connection blocks.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 12, 2020
    Inventors: PASCAL THUBERT, JEAN-PHILIPPE VASSEUR, PATRICK WETTERWALD, ERIC MICHEL LEVY-ABEGNOLI
  • Patent number: 10587501
    Abstract: A network device establishes a depth-aware communication schedule for one or more nodes in a data network having a routing topology comprising a root node, the establishing including selecting from a slotframe of the depth-aware communication schedule a first subset of timeslots based on the depth, and allocating to each timeslot in the first subset an exclusive role (a transmit operation, a receive operation, or an idle state) for one or more of the nodes at the corresponding depth; the network device identifies one or more idle states in the depth-aware communication schedule, and selects a second subset of timeslots from the idle states as in-case-of-emergency timeslots, based on the network device identifying in the second subset a corresponding timeslot at a neighboring depth being allocated a corresponding transmit operation or receive operation; the network device causes selective transmission of a prioritized data packet in an allocated in-case-of-emergency timeslot.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: March 10, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Huimin She, Feiliang Wang, Patrick Wetterwald
  • Patent number: 10579942
    Abstract: In one embodiment, a networking device in a local area network (LAN) receives an instruction from a server to form a virtual network overlay in the LAN that redirects traffic associated with a particular node in the LAN to the server for analysis. The networking device establishes the virtual network overlay in the LAN to redirect traffic associated with the particular node to the server. The networking device determines that at least a portion of the traffic associated with the particular node should be processed locally within the LAN and not via redirection to the server and adjusts the virtual network overlay to process the at least a portion of the traffic associated with the particular node locally within the LAN and not via redirection to the server.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: March 3, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Jean-Philippe Vasseur, Pascal Thubert, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10567267
    Abstract: In one embodiment, a method comprises: determining access point devices providing network coverage for a mobile network device within a prescribed coverage area of a deterministic network; establishing a deterministic reception tree comprising a root and switching devices associated with the access point devices, the deterministic reception tree enabling any one or more of the switching devices to forward toward the root a data packet, transmitted by the mobile network device at a prescribed transmission time, for deterministic reception by the root at a prescribed reception time regardless of any distance of any of the access point devices from the root; and causing the switching devices to implement the deterministic reception tree enabling the root to deterministically receive the data packet, received by any one or more of the access point devices, at the prescribed reception time.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: February 18, 2020
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Patrick Wetterwald, Eric Michel Levy-Abegnoli, Jean-Philippe Vasseur
  • Publication number: 20200053006
    Abstract: In one embodiment, a network device (e.g., a RPL router) executes fast local RPL recovery in a low power and lossy network (LLN). The network device, in response to becoming an orphan in a directed acyclic graph (DAG) topology, can utilize the data plane to maintain at least some data traffic by randomly forwarding the data traffic to identified neighbor devices, while eliminating children from the list of forwarders and by finding successors that can be used for re-parenting. Hence, when a RPL network device having lost its last feasible parent can avoid data loss and accelerate a re-parenting process using local repair in the data plane instead of the control plane of the routing protocol used to establish the DAG topology.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 13, 2020
    Inventors: PASCAL THUBERT, PATRICK WETTERWALD
  • Patent number: 10554560
    Abstract: In one embodiment, a device in a network receives data regarding traffic volumes of deterministic and non-deterministic traffic along a first path in the network. The device predicts, using the received data, an increase in the traffic volume of the non-deterministic traffic along the first path in the network. The device identifies a period of time associated with the predicted increase in the traffic volume of the non-deterministic traffic along the first path. The device causes the deterministic traffic to be sent along a second path in the network during the identified period of time, to allow the first path to accommodate the predicted increase in the traffic volume of the non-deterministic traffic along the first path.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: February 4, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Jean-Philippe Vasseur, Pascal Thubert, Patrick Wetterwald
  • Publication number: 20200028888
    Abstract: In one embodiment, a device in a network receives a path computation agent configured to determine a path in the network that satisfies an objective function. The device executes the path computation agent to update state information regarding the network maintained by the path computation agent. The device selects a neighbor of the device in the network to execute the path computation agent based on the updated state information regarding the network. The device instructs the selected neighbor to execute the path computation agent with the updated state information regarding the network. The device unloads the path computation agent from the device after selecting the neighbor of the device to execute the path computation agent.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Inventors: Eric Levy-Abegnoli, Pascal Thubert, Patrick Wetterwald, Jean-Philippe Vasseur
  • Publication number: 20200014618
    Abstract: In one embodiment, a parent network device, operating according to a first Trickle operation using a first selected minimum contention interval, responds to detecting a loss of attached child network devices by starting a second Trickle operation using a second selected minimum contention interval. The second Trickle operation includes maintaining the second selected minimum contention interval for subsequent iterations of the second Trickle operation. The parent network device initiates an accelerated transmission rate of the advertisement message that is faster than the first and second Trickle operations (using a third selected minimum contention interval less than the first minimum contention interval) in response to receiving a message from one of the lost child network devices, and resumes the first Trickle operation upon recovery of all the lost child network devices.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 9, 2020
    Inventors: PASCAL THUBERT, JIANZHOU CHEN, HUIMIN SHE, PATRICK WETTERWALD
  • Patent number: 10530665
    Abstract: In one embodiment, a server instructs one or more networking devices in a local area network (LAN) to form a virtual network overlay in the LAN that redirects traffic associated with a particular node in the LAN to the server. The server identifies a configuration for the particular node based on a node profile for the particular node. The server accesses a configuration interface of the particular node and instructs the particular node to use the identified configuration via the accessed configuration interface.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: January 7, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10524194
    Abstract: In one embodiment, a supervisory device in a network receives from a plurality of access points (APs) in the network data regarding a network availability request broadcast by a node seeking to access the network and received by the APs in the plurality. The supervisory device uniquely associates the node with a virtual access point (VAP) for the node and forms a VAP mapping between the VAP for the node and a set of the APs in the plurality selected based on the received data regarding the network availability request. One of the APs in the mapping is designated as a primary access point for the node. The supervisory device instructs the primary AP to send a network availability response to the node that includes information for the VAP. The node uses the information for the VAP to access the network via the set of APs in the VAP mapping.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: December 31, 2019
    Assignee: Cisco Techology, Inc.
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10524267
    Abstract: In one embodiment, a supervisory device in a network classifies mobility and traffic characteristics of a first node in the network. The supervisory device identifies wireless channels supported by access points (APs) in the network. The supervisory device selects one of the wireless channels for use by the first node based on the classified mobility and traffic characteristics of the first node. The supervisory device forms a first virtual access point (VAP) for the first node on the selected wireless channel. A plurality of the access points (APs) in the network that support the selected channel are mapped to the first VAP as part of a VAP mapping. The first node treats the APs in the VAP mapping as a single AP for purposes of communicating with the network.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: December 31, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Jerome Henry, Pascal Thubert
  • Publication number: 20190394701
    Abstract: In one embodiment, a method is performed. A fat tree route miner (FT-RM) entity may be used to establish a control plane session with a first spine node in communication with a network. The FT-RM entity may identify a prefix that is unreachable by the first spine node. The FT-RM entity may instruct a spine node to disaggregate the prefix.
    Type: Application
    Filed: November 13, 2018
    Publication date: December 26, 2019
    Inventors: Nagendra Kumar Nainar, Pascal Thubert, Carlos M. Pignataro
  • Patent number: 10498632
    Abstract: A network device receives a data packet sourced from a root of a tree-based topology and including a data structure identifying transmitted data packets transmitted by the root; in response to determining one or more absent transmitted data packets based on the data structure, the network device starts a deferred transmission timer requiring the network device to wait a first half of a selected minimum contention interval before attempting transmission to a parent at a randomized position within a second half of the selected minimum contention interval, the selected minimum contention interval based on the distance to the root and at least twice that of the parent; the network device selectively transmits a control message to the parent to request the absent transmitted data packets only if, upon reaching the corresponding randomized position of the deferred transmission timer, the network device has not received the absent transmitted data packets.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: December 3, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Jianzhou Chen, Pascal Thubert, Huimin She, Feiliang Wang, Chuanwei Li
  • Publication number: 20190363976
    Abstract: A network device establishes a depth-aware communication schedule for one or more nodes in a data network having a routing topology comprising a root node, the establishing including selecting from a slotframe of the depth-aware communication schedule a first subset of timeslots based on the depth, and allocating to each timeslot in the first subset an exclusive role (a transmit operation, a receive operation, or an idle state) for one or more of the nodes at the corresponding depth; the network device identifies one or more idle states in the depth-aware communication schedule, and selects a second subset of timeslots from the idle states as in-case-of-emergency timeslots, based on the network device identifying in the second subset a corresponding timeslot at a neighboring depth being allocated a corresponding transmit operation or receive operation; the network device causes selective transmission of a prioritized data packet in an allocated in-case-of-emergency timeslot.
    Type: Application
    Filed: May 23, 2018
    Publication date: November 28, 2019
    Inventors: PASCAL THUBERT, HUIMIN SHE, FEILIANG WANG, PATRICK WETTERWALD
  • Publication number: 20190364078
    Abstract: Embodiments include technologies for creating a manifest for a conferencing event in a network, adding a name tag identifying the conferencing event to the manifest, receiving an interest packet including one or more parameters indicating a named flow being produced at a source node, adding content metadata of the named flow to the manifest, and sending the manifest to the source node. Further embodiments include adding, to the manifest, session-level metadata associated with a user of the source node. Embodiments include receiving a second interest packet with one or more second parameters identifying a user of a client node, where the second interest packet indicates a request to authorize the user of the client node to subscribe to the conferencing event. In further embodiments, session-level metadata associated with the user is added to the manifest if the user is authorized to subscribe to the conferencing event.
    Type: Application
    Filed: August 13, 2019
    Publication date: November 28, 2019
    Inventors: Pascal Thubert, Xiaoqing Zhu, Giovanna Carofiglio
  • Patent number: 10491515
    Abstract: In one embodiment, a network device (e.g., a RPL router) executes fast local RPL recovery in a low power and lossy network (LLN). The network device, in response to becoming an orphan in a directed acyclic graph (DAG) topology, can utilize the data plane to maintain at least some data traffic by randomly forwarding the data traffic to identified neighbor devices, while eliminating children from the list of forwarders and by finding successors that can be used for re-parenting. Hence, when a RPL network device having lost its last feasible parent can avoid data loss and accelerate a re-parenting process using local repair in the data plane instead of the control plane of the routing protocol used to establish the DAG topology.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: November 26, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Patrick Wetterwald
  • Patent number: 10491719
    Abstract: In one embodiment, a method comprises: a first network device in a deterministic network identifying at least one of first and second deterministic transmit opportunities for transmission of a data packet toward a destination device along a deterministic path of the deterministic network, the first deterministic transmit opportunity reserved for the first network device deterministically receiving the data packet from a second network device and the second deterministic transmit opportunity reserved for deterministic transmission by the first network device of the data packet toward the destination device along the deterministic path; the first network device detecting an absence of receiving the data packet from the second network device according to the first deterministic transmit opportunity; and the first network device selectively generating and deterministically transmitting according to the second deterministic transmit opportunity, in response to the absence of receiving the data packet, a management
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: November 26, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Patrick Wetterwald, Pascal Thubert, Eric Michel Levy-Abegnoli, Jean-Philippe Vasseur