公开(公告)号：US20200177490A1

公开(公告)日：2020-06-04

申请号：US16781270

申请日：2020-02-04

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：US10673883B2

公开(公告)日：2020-06-02

申请号：US15978252

申请日：2018-05-14

Applicant: Cisco Technology, Inc.

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

IPC: H04L29/06 ,  H04J3/06 ,  H04L12/24 ,  H04L12/26 ,  H04L12/723

Abstract: In one embodiment, a device receives data indicative of packet arrival times at a plurality of nodes along a path in a deterministic network. The device compares the packet arrival times to their corresponding scheduled delivery intervals in a deterministic communication schedule used by the nodes along the path. The device detects, using a machine learning-based anomaly detector, a time synchronization anomaly based on the comparisons between the packet arrival times and their scheduled delivery intervals. The device causes performance of a mitigation action in the network based on the detected time synchronization anomaly.

公开(公告)号：US10608843B2

公开(公告)日：2020-03-31

申请号：US15485673

申请日：2017-04-12

Applicant: Cisco Technology, Inc.

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

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

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.

公开(公告)号：US10579942B2

公开(公告)日：2020-03-03

申请号：US15485701

申请日：2017-04-12

Applicant: Cisco Technology, Inc.

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

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

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.

公开(公告)号：US10554560B2

公开(公告)日：2020-02-04

申请号：US15711417

申请日：2017-09-21

Applicant: Cisco Technology, Inc.

Inventor： Jean-Philippe Vasseur ,  Pascal Thubert ,  Patrick Wetterwald

IPC: H04L12/801 ,  H04L12/707 ,  H04L12/911 ,  H04L12/24

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.

公开(公告)号：US20190394701A1

公开(公告)日：2019-12-26

申请号：US16188627

申请日：2018-11-13

Applicant: Cisco Technology, Inc.

Inventor： Nagendra Kumar Nainar ,  Pascal Thubert ,  Carlos M. Pignataro

IPC: H04W40/26 ,  H04L12/715 ,  H04L12/753 ,  H04L12/741 ,  H04L12/707 ,  H04W40/04 ,  H04W40/34

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.

公开(公告)号：US20190335479A1

公开(公告)日：2019-10-31

申请号：US15962035

申请日：2018-04-25

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Huimin She ,  Feiliang Wang

IPC: H04W72/12 ,  H04W40/24 ,  H04B1/713

Abstract: In one embodiment, a device receives data indicative of a routing topology of a network. The network comprises a root node and each node in the network has an associated network depth relative to the root node in the routing topology. The device assigns the nodes in the network to timeslots of a channel-hopping communication schedule in order of their associated network depths. The device assigns transmit and receive actions to the timeslots of the communication schedule for a particular time such that parent-to-child and child-to-parent communications alternate with network depth in the timeslots. The device sends the communication schedule with the node and action assignments to one or more of the nodes in the network.

公开(公告)号：US20190327166A1

公开(公告)日：2019-10-24

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：US10439940B2

公开(公告)日：2019-10-08

申请号：US15787790

申请日：2017-10-19

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/801 ,  H04L12/853

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 instance.

公开(公告)号：US10425339B2

公开(公告)日：2019-09-24

申请号：US15332020

申请日：2016-10-24

Applicant: Cisco Technology, Inc.

Inventor： Pascal Thubert ,  Pierre Pfister

IPC: H04L12/803 ,  H04L29/06 ,  H04L29/08 ,  H04L12/28 ,  H04L29/12 ,  H04L1/00

Abstract: In one embodiment, a splitting device in a computer network transmits to a combining device first and second portions of a data stream via first and second tunnels, respectively, where packets of the data stream indicate a time of transmission of the packets from the splitting device, a first and second transmission rate of the packets on a respective one of the first and second tunnels, and sequencing information of the packets within the data stream. The splitting device receives from the combining device a first and second receive rate of the packets for each of the first and second tunnels, respectively. In response to the first receive rate being less than the first transmission rate, the splitting device reduces the first transmission rate and increases the second transmission rate.