公开(公告)号：US10812523B2

公开(公告)日：2020-10-20

申请号：US15896182

申请日：2018-02-14

Applicant: Cisco Technology, Inc.

Inventor： Hugo Latapie ,  Enzo Fenoglio ,  Pascal Thubert ,  Jean-Philippe Vasseur

IPC: H04L29/06 ,  G06N3/08 ,  G06N20/00 ,  G06F16/18

Abstract: In one embodiment, a device maintains a journal of uncommitted changes to a file system of the device in a layer that is hot-swappable with a writable container layer. The device augments the journal with metadata regarding a particular uncommitted change to the file system of the device. The device applies, within a sandbox environment of the device, a machine learning-based anomaly detector to the particular uncommitted change to the file system and the metadata regarding the change, to determine whether the particular uncommitted change to the file system is indicative of a destruction of service attack on the device. The device causes performance of a mitigation action when the machine learning-based anomaly detector determines that the particular uncommitted change to the file system is indicative of a destruction of service attack on the device.

公开(公告)号：US10785809B1

公开(公告)日：2020-09-22

申请号：US15383442

申请日：2016-12-19

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Max Pritikin ,  Eliot Lear ,  Toerless Eckert ,  Nancy Cam-Winget ,  Brian E. Weis

IPC: H04W76/10 ,  H04W40/24 ,  H04L29/08

Abstract: In one embodiment, a device in a network receives node information regarding a plurality of nodes that are to join the network. The device determines network formation parameters based on the received node information. The network formation parameters are indicative of a network join schedule and join location for a particular node from the plurality of nodes. The device generates, according to the network join schedule, a join invitation for the particular node based on the network formation parameters. The join invitation allows the particular node to attempt joining the network at the join location via a specified access point. The device causes the sending of one or more beacons via the network that include the join invitation to the particular node. The particular node attempts to join the network via the specified access point based on the one or more beacons.

公开(公告)号：US10785094B1

公开(公告)日：2020-09-22

申请号：US16393093

申请日：2019-04-24

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert

IPC: H04L12/24 ,  H04L12/937 ,  H04L12/46 ,  H04L12/947 ,  H04L12/753 ,  H04L12/715

Abstract: In one embodiment, a plurality of PODs is formed in a software defined networking (SDN) fabric, each POD comprising a plurality of leaf nodes and connected to a plurality of spine nodes in a spine layer of the SDN fabric. One of the plurality of PODs is designated as a super POD and link state information is provided for the entire fabric to the super POD by sending northbound advertisements in the fabric to the super POD. A disconnection is identified between a leaf node in the SDN fabric and a particular one of the spine nodes in the spine layer, based on the link state information provided to the super POD. The disconnection is repaired between the leaf node and the particular spine node in the spine layer.

公开(公告)号：US10771531B2

公开(公告)日：2020-09-08

申请号：US15623902

申请日：2017-06-15

Applicant: Cisco Technology, Inc.

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

IPC: H04L29/08 ,  H04L12/721 ,  H04L12/26 ,  H04L12/729 ,  H04L12/771 ,  H04L12/24 ,  H04L12/727 ,  H04W4/70

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：US10771405B2

公开(公告)日：2020-09-08

申请号：US16172598

申请日：2018-10-26

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/861 ,  H04L12/803 ,  H04L12/801 ,  H04L12/947 ,  H04L12/931

Abstract: A source access network device multicasts copies of a packet to multiple core switches, for switching to a same target access network device. The core switches are selected for the multicast based on a load balancing algorithm managed by a central controller. The target access network device receives at least one of the copies of the packet and generates at least metric indicative of a level of traffic congestion at the core switches and feeds back information regarding the recorded at least one metric to the controller. The controller adjusts the load balancing algorithm based on the fed back information for selection of core switches for a subsequent data flow.

公开(公告)号：US10749746B2

公开(公告)日：2020-08-18

申请号：US16511139

申请日：2019-07-15

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Jean-Phillippe Vasseur ,  Patrick Wetterwald ,  ERic Levy-Abegnoli

IPC: H04W84/12 ,  H04L12/24 ,  H04L12/911 ,  H04W88/08 ,  H04L12/931

Abstract: In one embodiment, a supervisory device in a network assigns different access points in the network to different access point groupings. Each of the different access point groupings uses a different network path to communicate with a given endpoint in the network. The supervisory device selects at least one of the access points in each of the different access point groupings for mapping to a virtual access point (VAP) for a node in the network as part of a VAP mapping. The supervisory device instructs the selected access points to form a VAP for the node. The node treats the access points in the VAP mapping as a single access point for purposes of communicating with the network.

公开(公告)号：US20200244576A1

公开(公告)日：2020-07-30

申请号：US16260820

申请日：2019-01-29

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/741 ,  H04L12/721 ,  H04L12/801 ,  H04L12/823 ,  H04L12/865

Abstract: In one embodiment, a particular device along a path in a deterministic network receives a first packet sent from a source towards a destination via the path. The particular device sends the first packet to a next hop device along the path, according to a deterministic schedule associated with the first packet. The particular device determines, after sending the first packet, an action to be performed on the first packet. The particular device then sends a second packet to the next hop device indicative of the determined action. The second packet causes another device along the path to perform the action on the first packet.

公开(公告)号：US20200229246A1

公开(公告)日：2020-07-16

申请号：US16246953

申请日：2019-01-14

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Feiliang Wang ,  Huimin She ,  Patrick Wetterwald

IPC: H04W74/08 ,  H04W74/00 ,  H04W56/00

Abstract: In one embodiment, a parent device in an unaligned wireless network may determine a superframe comprising a header timeslot followed by a plurality of sub timeslots. The parent device may transmit, to a plurality of child devices in the unaligned wireless network, a beacon during the header timeslot, wherein the beacon comprises i) synchronization information used by the plurality of child devices to synchronize to the header timeslot and ii) reservation information that indicates one or more reserved sub timeslots of the plurality of sub timeslots. The parent device may receive, from a particular child device of the plurality of child devices, a message during a particular sub timeslot of the plurality of sub timeslots that is different than the one or more reserved sub timeslots.

公开(公告)号：US10681128B2

公开(公告)日：2020-06-09

申请号：US15291211

申请日：2016-10-12

Applicant: Cisco Technology, Inc.

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

IPC: G06F15/16 ,  H04L29/08 ,  H04L29/06 ,  H04W4/70 ,  H04L12/801

Abstract: In one embodiment, a device in a network identifies a node in the network that is not synchronized to a network time synchronization mechanism. The device determines a scheduled reception time for a particular deterministic traffic flow at which the device is to receive the traffic flow from the node. The device sends, prior to the scheduled reception time, a request to the node for the particular deterministic traffic flow. The request identifies the particular deterministic traffic flow and causes the node to send the traffic flow to the device. The device receives the particular deterministic traffic flow from the node at the scheduled reception time.

公开(公告)号：US20200107168A1

公开(公告)日：2020-04-02

申请号：US16149237

申请日：2018-10-02

Applicant: Cisco Technology, Inc.

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

IPC: H04W4/40 ,  H04W8/00 ,  H04W12/10 ,  H04W4/06 ,  H04W40/22

Abstract: In one embodiment, a supervisory service receives a registration message broadcast by a first vehicle and captured by a RSU in the network of RSUs. The supervisory service registers the first vehicle by validating a signature of the registration message without registering a media access control (MAC) address of the first vehicle and without causing to send a registration response to the first vehicle. The supervisory service receives a message broadcast by a second vehicle addressed to the first vehicle and captured by at least one RSU in the network of RSUs. The supervisory service selects one or more RSUs in the network of RSUs to re-broadcast the message. The supervisory service controls the one or more RSUs to re-broadcast the message.