公开(公告)号：US10608921B2

公开(公告)日：2020-03-31

申请号：US16160481

申请日：2018-10-15

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  Jakob Heitz

IPC: H04L12/751

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.

公开(公告)号：US20200028888A1

公开(公告)日：2020-01-23

申请号：US16585761

申请日：2019-09-27

Applicant: Cisco Technology, Inc.

Inventor： Eric Levy-Abegnoli ,  Pascal Thubert ,  Patrick Wetterwald ,  Jean-Philippe Vasseur

IPC: H04L29/08 ,  H04L12/727 ,  H04L12/24 ,  H04L12/721 ,  H04L12/771 ,  H04L12/729 ,  H04L12/26

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.

公开(公告)号：US10530665B2

公开(公告)日：2020-01-07

申请号：US15485695

申请日：2017-04-12

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Jean-Philippe Vasseur ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

IPC: H04L12/24 ,  H04L29/06 ,  G06N20/00 ,  H04L12/46 ,  H04L29/08

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.

公开(公告)号：US10524194B2

公开(公告)日：2019-12-31

申请号：US16248108

申请日：2019-01-15

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Jean-Philippe Vasseur ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

IPC: H04W24/02 ,  H04W48/14 ,  H04L1/18 ,  H04W88/08

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.

公开(公告)号：US20190289022A1

公开(公告)日：2019-09-19

申请号：US15920651

申请日：2018-03-14

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Patrick Wetterwald ,  Eric Levy-Abegnoli ,  Jean-Philippe Vasseur

IPC: H04L29/06 ,  H04L12/823

Abstract: In one embodiment, an elimination point device in a network obtains a master secret from a network controller. The elimination point device assesses, using the master secret, whether an incoming packet received by the elimination point device from a redundant path between the elimination point device and a replication point device in the network includes a valid message integrity check (MIC). The elimination point device determines whether the incoming packet was injected maliciously into the redundant path, based on the assessment of the incoming packet. The elimination point device initiates performance of a mitigation action in the network, when the elimination point device determines that the incoming packet was injected maliciously into the redundant path.

公开(公告)号：US10349335B2

公开(公告)日：2019-07-09

申请号：US15795637

申请日：2017-10-27

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

IPC: H04W40/22 ,  H04W40/12 ,  H04W40/24 ,  H04W56/00 ,  H04W72/04 ,  H04L12/723 ,  H04W84/10 ,  H04W84/18 ,  H04W88/04 ,  H04W92/18

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). The selected connection path may be part of an operational control loop for low latency, deterministic D2D communications.

公开(公告)号：US20190199626A1

公开(公告)日：2019-06-27

申请号：US15854040

申请日：2017-12-26

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Eric Levy-Abegnoli ,  Jean-Philippe Vasseur ,  Patrick Wetterwald

IPC: H04L12/715 ,  H04L12/801 ,  H04L12/709

CPC classification number: H04L45/64 ,  H04L45/245 ,  H04L47/19

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.

公开(公告)号：US20190166547A1

公开(公告)日：2019-05-30

申请号：US16248108

申请日：2019-01-15

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Jean-Philippe Vasseur ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

IPC: H04W48/14 ,  H04W24/02 ,  H04L1/18

CPC classification number: H04W48/14 ,  H04L1/18 ,  H04W24/02 ,  H04W88/08

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.

公开(公告)号：US20190163548A1

公开(公告)日：2019-05-30

申请号：US15825248

申请日：2017-11-29

Applicant: Cisco Technology, Inc.

Inventor： Patrick Wetterwald ,  Pascal Thubert ,  Eric Levy-Abegnoli ,  Jean-Philippe Vasseur

IPC: G06F11/07 ,  H04L29/08 ,  H04B17/309

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.

公开(公告)号：US20190141540A1

公开(公告)日：2019-05-09

申请号：US15804064

申请日：2017-11-06

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Jean-Philippe Vasseur ,  Patrick Wetterwald ,  Eric Levy-Abegnoli

IPC: H04W16/18 ,  G05D1/02

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.