Patents by Inventor Patrick Wetterwald

Patrick Wetterwald 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: 10382397
    Abstract: In one embodiment, a device in a network determines whether a destination address of a packet received by the device is within a neighbor discovery (ND) cache of the device. The device determines whether the destination address is not in a set of addresses used to generate an address lookup array or possibly in the set of addresses used to generate the address lookup array, in response to determining that the destination address of the packet is not within the ND cache. The device performs address resolution for the destination address of the packet, in response to determining that the destination address of the packet is possibly in the set of addresses used to generate the address lookup array.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: August 13, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Eric Levy-Abegnoli, Patrick Wetterwald
  • Patent number: 10367623
    Abstract: In one embodiment, a supervisory device in a network forms a virtual access point (VAP) for a node in the network whereby a plurality of access points (APs) in the network are mapped to the VAP as part of a VAP mapping. The node treats the APs in the VAP mapping as a single AP for purposes of communicating with the network. The supervisory device determines a data traffic management strategy for the node based on traffic associated with the node. The supervisory device instructs the APs in the VAP mapping to implement the data traffic management strategy for the node.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: July 30, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10349335
    Abstract: In one illustrative example, one or more controllers may be configured to perform a path selection procedure for selecting a connection path for multi-hop device-to-device (D2D) communications. Identifiers of candidate D2D device pairings from D2D peer discovery performed by a plurality of UEs served in a plurality of base stations and link quality data associated with each candidate D2D device pairings are obtained. D2D network topology map data including a plurality of link-state relationships are generated based on the identifiers of candidate D2D device pairings. A plurality of connection paths of UEs are computed based on the generated link-state relationships and the link quality data, where each computed connection path includes UEs indicated as required nodes and at least one UE indicated as a candidate relay node. An optimal connection path that satisfies a latency parameter is selected from the plurality of computed connection paths (e.g. based on a shortest path first or SPF algorithm).
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: July 9, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10348481
    Abstract: In one embodiment, a device in a network receives a plurality of packets from one or more neighbors of the device. Each of the packets has a scheduled delivery time interval according to a deterministic communication schedule. The device determines an amount of clock drift for each of the one or more neighbors of the device by comparing arrival times of the received packets to their scheduled delivery time intervals according to the deterministic communication schedule. The device calculates a clock adjustment based on the amount of clock drift for each of the one or more neighbors. The device adjusts a clock of the device using the calculated clock adjustment.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: July 9, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Patrick Wetterwald, Pascal Thubert, Eric Levy-Abegnoli
  • Publication number: 20190199626
    Abstract: In one embodiment, a cloud-based service 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 a first isolation application instance hosted by the service. The first isolation application instance receives the redirected traffic associated with the particular node. The first isolation application instance determines a routing path for the traffic that comprises one or more other isolation application instances hosted by the cloud-based service. The first isolation application instance tags the traffic to indicate the determined routing path. The first isolation application forwards the tagged traffic to a second isolation application instance along the determined routing path.
    Type: Application
    Filed: December 26, 2017
    Publication date: June 27, 2019
    Inventors: Pascal Thubert, Eric Levy-Abegnoli, Jean-Philippe Vasseur, Patrick Wetterwald
  • Publication number: 20190190729
    Abstract: In one embodiment, a cloud-based service 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 service. The service receives multicast or broadcast traffic sent by the particular node in the LAN and redirected to the service via the virtual network overlay. The service identifies a group of nodes in the network that are to receive the traffic sent by the particular node, based in part by profiling the traffic associated with the particular node. The service sends the traffic sent by the particular node to at least one networking device in the LAN with an indication of the identified group of nodes in the network that are to receive the traffic sent by the particular node. The at least one networking device forwards the traffic sent by the particular node to the nodes in the identified group.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 20, 2019
    Inventors: Eric Levy-Abegnoli, Patrick Wetterwald, Pascal Thubert, Jean-Philippe Vasseur
  • Patent number: 10320659
    Abstract: In one embodiment, a method comprises receiving, by a network device in a deterministic data network, one or more deterministic schedules for reaching a destination network device along one or more deterministic paths in the deterministic data network; generating, by the network device, a deterministic source-route path for reaching the destination network device based on the deterministic schedules allocated for the deterministic paths, the deterministic source-route path comprising, for each specified hop, a corresponding deterministic start time; and outputting, by the network device, a source routed deterministic packet comprising the deterministic source-route path for deterministic forwarding of the source routed deterministic packet to the destination network device.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: June 11, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Patrick Wetterwald, Pascal Thubert, Eric Michel Levy-Abegnoli
  • Patent number: 10320657
    Abstract: In one embodiment, a device in a network receives a notification from a neighbor of the device indicative of a child node of the device requesting a parent change from the device to the neighbor. The device updates an existing routing path from the device to the child node to be routed through the neighbor, in response to receiving the notification from the neighbor. The device receives an instruction to remove the updated routing path from the device to the child node through the neighbor. The device removes the updated routing path from the device to the child node, in response to receiving the instruction to remove the updated routing path.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: June 11, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Eric Levy-Abegnoli, Patrick Wetterwald, Jean-Philippe Vasseur
  • Patent number: 10320652
    Abstract: In one embodiment, a method comprises promiscuously detecting, by a network device in a wireless data network having a tree-based topology for reaching a root device, a wireless data packet transmitted by a source network device and specifying a destination device in the wireless data network; determining, by the network device, that the destination device is within a first sub-topology provided by the network device to reach the root device, wherein the source network device is within a second distinct sub-topology provided by a parent device of the source network device to reach the root device; and causing installation of a bypass path, bypassing the root device, based on the network device generating and transmitting an instruction to the parent device to install a route entry causing a data packet destined for the destination device to be routed by the parent device directly to the network device.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: June 11, 2019
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Patrick Wetterwald, Eric Michel Levy-Abegnoli, Jean-Philippe Vasseur
  • Publication number: 20190163548
    Abstract: In one embodiment, a supervisory device in a network receives a help request from a first node in the network indicative of a problem in the network detected by the first node. The supervisory device identifies a second node in the network that is hosting a repair walker agent able to address the detected problem. The supervisory device determines a network path via which the second node is to send repair walker agent to the first node. The supervisory device instructs the second node to send the repair walker agent to the first node via the determined path.
    Type: Application
    Filed: November 29, 2017
    Publication date: May 30, 2019
    Inventors: Patrick Wetterwald, Pascal Thubert, Eric Levy-Abegnoli, Jean-Philippe Vasseur
  • Publication number: 20190166547
    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: Application
    Filed: January 15, 2019
    Publication date: May 30, 2019
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10298542
    Abstract: In one embodiment, a networking device in a local area network (LAN) establishes a virtual network overlay in the LAN to redirect traffic associated with a particular node in the LAN to a server for analysis. The networking device receives an indication from the server that at least a portion of the traffic associated with the particular node is trusted for local sending within the LAN and adjusts the virtual network overlay to locally send the trusted portion of the traffic associated with the particular node to one or more other nodes in the LAN without redirection to the server. The networking device collects characteristic information regarding the trusted portion of the traffic sent locally within the LAN via the adjusted virtual network overlay and sends the collected characteristic information to the server for analysis.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: May 21, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Eric Levy-Abegnoli
  • Patent number: 10299265
    Abstract: In one embodiment, a network of nodes is configured to communicate according to a configuration of a vertical ladder topology as well as monitoring communication in the network, and/or selectively controls whether or not provisioned particular links will be used. One embodiment colors nodes of the network (e.g., a wireless deterministic network) along different paths through the network and marks packets with the color of each traversed node to track a path taken by a packet. One embodiment sends a particular packet through the network and marks over which links the packet traverses and aggregates these traversed links of other copies of the particular packet. One embodiment controls whether or not the provisioned time slots are used based on flooding a control packet through the network with enable or disable information for each of these links.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: May 21, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald
  • Publication number: 20190149629
    Abstract: In one embodiment, a method comprises: storing, by a computing device in a non-deterministic data network, a plurality of data packets originated by a source device into a mass storage medium associated with the computing device; receiving, by the computing device, a data request originated by an access point device providing deterministic reachability to a deterministic device in a deterministic data network providing reachability to multiple deterministic devices, the request specifying one or more deterministic constraints associated with reaching the deterministic device; and supplying, by the computing device, a selected one of the data packets to the access point device for delivery of data stored therein to the deterministic device according to the one or more deterministic constraints.
    Type: Application
    Filed: November 15, 2017
    Publication date: May 16, 2019
    Inventors: PATRICK WETTERWALD, PASCAL THUBERT, MAIK GUENTER SEEWALD, ERIC MICHEL LEVY-ABEGNOLI
  • Publication number: 20190141540
    Abstract: In one embodiment, a first actuator in a network of sensors and actuators executes a walker agent configured to adjust an actuation setting of the first actuator. The actuation setting controls an area of coverage of the first actuator when actuated. The executing agent on the first actuator receives one or more sensor measurements from one or more of the sensors that are in communication range of the first actuator. The executing agent also controls, based on the received one or more sensor measurements, the area of coverage of the first actuator by adjusting its actuation setting, in an attempt to optimize coverage of the sensors in the network by the areas of coverage of the actuators. The first actuator unloads the executing walker agent after adjusting the actuation setting of the first actuator and propagates the agent to another one of the actuators in the network for execution.
    Type: Application
    Filed: November 6, 2017
    Publication date: May 9, 2019
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Eric Levy-Abegnoli
  • Publication number: 20190132784
    Abstract: In one illustrative example, one or more controllers may be configured to perform a path selection procedure for selecting a connection path for multi-hop device-to-device (D2D) communications. Identifiers of candidate D2D device pairings from D2D peer discovery performed by a plurality of UEs served in a plurality of base stations and link quality data associated with each candidate D2D device pairings are obtained. D2D network topology map data including a plurality of link-state relationships are generated based on the identifiers of candidate D2D device pairings. A plurality of connection paths of UEs are computed based on the generated link-state relationships and the link quality data, where each computed connection path includes UEs indicated as required nodes and at least one UE indicated as a candidate relay node. An optimal connection path that satisfies a latency parameter is selected from the plurality of computed connection paths (e.g. based on a shortest path first or SPF algorithm).
    Type: Application
    Filed: October 27, 2017
    Publication date: May 2, 2019
    Inventors: Pascal Thubert, Patrick Wetterwald, Eric Levy-Abegnoli
  • Publication number: 20190132253
    Abstract: In one embodiment, a method comprises receiving, by a transport layer executed by a processor circuit in an apparatus, an identifiable grouping of data; storing, by the transport layer, the data as transport layer packets in a buffer circuit in the apparatus, the storing including inserting into each transport layer packet a grouping identifier that identifies the transport layer packets as belonging to the identifiable grouping; and causing, by the transport layer, a plurality of transmitting deterministic network interface circuits to deterministically retrieve the transport layer packets from the buffer circuit for deterministic transmission across respective deterministic links, the grouping identifier enabling receiving deterministic network interface circuits to group the received transport layer packets, regardless of deterministic link, into a single processing group for a next receiving transport layer.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 2, 2019
    Inventors: PASCAL THUBERT, PATRICK WETTERWALD, ERIC MICHEL LEVY-ABEGNOLI, JEAN-PHILIPPE VASSEUR
  • Publication number: 20190124006
    Abstract: In one embodiment, a method comprises establishing, by a deterministic device interface circuit, a deterministic link with a peer deterministic interface circuit within a deterministic data network based on identifying a repeating deterministic schedule for transmitting each data packet, allocated to the deterministic schedule, at a corresponding transmission instance coinciding with a reception instance by the peer deterministic interface circuit; determining a latency between sending a request for data to a host device via a non-deterministic data link provided by a network switch, and receiving from the host device a transport layer packet responsive to the request; and sending an instruction to the host device for initiating transfer of the transport layer packet, the instruction correcting for the latency and enabling the deterministic device interface circuit to receive the transport layer packet for transmission of a corresponding data packet on the deterministic link at the corresponding transmission
    Type: Application
    Filed: October 19, 2017
    Publication date: April 25, 2019
    Inventors: PASCAL THUBERT, ERIC MICHEL LEVY-ABEGNOLI, PATRICK WETTERWALD
  • Publication number: 20190116000
    Abstract: In one embodiment, a method comprises: detecting, by a transport layer executed by a processor circuit in an apparatus, a request message received via a non-deterministic data link from one of a plurality of deterministic network interface circuits, the request message for a transport layer packet having been stored in a buffer circuit storing a plurality of transport layer packets in the apparatus, the deterministic network interface circuits providing respective deterministic links for deterministic transmission of the transport layer packets in a deterministic data network, the request message specifying a first number identifying any missed transmission opportunities on the corresponding deterministic link; determining, by the transport layer, a cause of failure in one or more of the missed transmission opportunities; and selectively executing, by the transport layer based on determining the cause of failure, a corrective action for preventing an increase in latency of the transport layer packets.
    Type: Application
    Filed: October 16, 2017
    Publication date: April 18, 2019
    Inventors: PASCAL THUBERT, ERIC MICHEL LEVY-ABEGNOLI, PATRICK WETTERWALD
  • Publication number: 20190109797
    Abstract: In one embodiment, a method comprises: receiving, by a transport layer executed by a processor circuit in an apparatus, a flow of application data having been originated by an executable application; storing, by the transport layer, the application data as transport layer packets in a buffer circuit in the apparatus, each transport layer packet having a corresponding transport sequence identifier identifying a corresponding position of the transport layer packet relative to a transmit order of the transport layer packets; and causing, by the transport layer, a plurality of deterministic network interface circuits to deterministically retrieve the transport layer packets, in the transmit order, from the buffer circuit for deterministic transmission across respective deterministic links, the transport sequence identifiers enabling a destination transport layer to recover the transmit order of the transport layer following the deterministic transmission across the deterministic links, regardless of order of rece
    Type: Application
    Filed: October 5, 2017
    Publication date: April 11, 2019
    Inventors: PASCAL THUBERT, PATRICK WETTERWALD, ERIC MICHEL LEVY-ABEGNOLI