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    In-situ operations, administration, and management (IOAM) and network event correlation for internet of things (IOT)
    12.
    发明授权
    In-situ operations, administration, and management (IOAM) and network event correlation for internet of things (IOT) 有权

    公开(公告)号：US10887230B2

    公开(公告)日：2021-01-05

    申请号：US15907020

    申请日：2018-02-27

    Applicant: Cisco Technology, Inc.

    Inventor： Carlos M. Pignataro ,  Nagendra Kumar Nainar ,  Rajiv Asati

    IPC: H04L12/749 ,  H04W72/04 ,  H04L12/721 ,  H04L12/725

    Abstract: In an embodiment, a computer implemented method comprises at an internetworking device that is logically located in an edge position with respect to an internet protocol network and a plurality of industrial devices, receiving packet and frame data from a first computing device that is associated with an industrial system and communicates using a device-level Ethernet data communication protocol that does not define a management layer; at the internetworking device, generating an Operations, Administration, Management (OAM) header using, at least in part, the packet and frame data, wherein the OAM header comprises a device identifier, a data type, and a variable; encapsulating the packet and frame data with the OAM header to generate encapsulated packet and frame data; storing the encapsulated packet and frame data in a database; sending the encapsulated packet and frame data to a second internetworking device that is associated with the industrial system and communicates using the device-level Ethernet data communication protocol that does not define a management layer.

    Enhancing routing metrics
    13.
    发明授权
    Enhancing routing metrics 有权

    公开(公告)号：US10771182B2

    公开(公告)日：2020-09-08

    申请号：US15961903

    申请日：2018-04-25

    Applicant: Cisco Technology, Inc.

    Inventor： Randy Zhang ,  Rajiv Asati ,  Gabriele Maria Galimberti

    IPC: H04B10/08 ,  H04B17/00 ,  H04J14/02 ,  H04Q11/00 ,  H04L12/751

    Abstract: In one embodiment, a first optical network device includes a controller, and a first network interface, wherein the first network interface is configured to exchange data with a first layer 3 network device, and the controller is configured to obtain at least one optical circuit attribute including an optical circuit distance and/or an optical circuit latency of a first optical circuit in an optical network, and provide the at least one optical circuit attribute to the first layer 3 network device. Related apparatus and methods are also described.

    Method and system for autonomous discovery of colored interface mappings across routing and optical layers
    15.
    发明授权
    Method and system for autonomous discovery of colored interface mappings across routing and optical layers 有权

    公开(公告)号：US10447551B1

    公开(公告)日：2019-10-15

    申请号：US16203930

    申请日：2018-11-29

    Applicant: Cisco Technology, Inc.

    Inventor： Randy Hehui Zhang ,  Rajiv Asati ,  Gabriele Maria Galimberti ,  Errol Fenton Roberts ,  Walid Wakim

    IPC: H04L12/24 ,  H04J14/02

    Abstract: An interface mapping method includes obtaining, at a network controller, device information of network devices configured to be in communication with each other through an optical network. The network devices include a plurality of colored interfaces that support a range of wavelengths for communication in the optical network. Interface information of the colored interfaces of the network devices is obtained, and optical power information associated with each of the colored interfaces is obtained. Optical power margins for a transmitter interface of the colored interfaces. The transmitter interface is controlled to transmit a power sequence based on the optical power margins, and power readings are obtained from a receiver interface of the colored interfaces. A topology between the colored interfaces is discovered based on the power sequence and the power readings.

    DISTRIBUTED SECURITY SYSTEM
    16.
    发明申请
    DISTRIBUTED SECURITY SYSTEM 审中-公开

    公开(公告)号：US20190222612A1

    公开(公告)日：2019-07-18

    申请号：US15870957

    申请日：2018-01-14

    Applicant: Cisco Technology, Inc.

    Inventor： Nagendra Kumar Nainar ,  Rajiv Asati ,  Carlos M. Pignataro

    IPC: H04L29/06 ,  H04L29/12

    Abstract: In one embodiment, a system includes a first host computer including a host interface configured to receive traffic from a domain ingress node of a first domain, and processing machinery configured to instantiate worker nodes, instantiate a master node and a security gateway agent on the master node, instantiate a plurality of security clients on the worker nodes, wherein each worker node includes at least one security client, wherein each security client is configured to monitor at least part of the traffic being forwarded in the one worker node for malicious traffic, and report a first data item about the malicious traffic to the security gateway agent, and wherein the security gateway agent is configured to forward a second data item about the malicious traffic to a security server to determine at least one security policy to mitigate the malicious traffic, and to be enforced by a node.

    Latency reduction in service function paths
    17.
    发明授权
    Latency reduction in service function paths 有权

    公开(公告)号：US10333855B2

    公开(公告)日：2019-06-25

    申请号：US15491352

    申请日：2017-04-19

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Rajiv Asati

    IPC: H04L29/08 ,  H04L12/841 ,  H04L29/06 ,  H04L12/851

    Abstract: In some aspects, a method of the technology can include steps for sending a packet along a service function chain (SFC) to an egress node, the SFC comprising a plurality of service function forwarders (SFFs), wherein each SFF is associated with at least one service function (SF), and receiving the packet at a first SFF in the SFC, wherein the first SFF is associated with a first SF. In some aspects, the first SFF can also be configured to perform operations including: reading an option flag of the packet, and determining whether to forward the packet to the first based on the option flag. Systems and machine-readable media are also provided.

    CENTRALIZED SEGMENT ROUTING DATAPLANE BASED BACKUP PATH VALIDATION
    20.
    发明申请
    CENTRALIZED SEGMENT ROUTING DATAPLANE BASED BACKUP PATH VALIDATION 审中-公开

    公开(公告)号：US20180359176A1

    公开(公告)日：2018-12-13

    申请号：US15619851

    申请日：2017-06-12

    Applicant: Cisco Technology, Inc.

    Inventor： Nagendra Kumar Nainar ,  Carlos M. Pignataro ,  Rajiv Asati

    IPC: H04L12/707 ,  H04L12/703

    CPC classification number: H04L45/22 ,  H04L45/123 ,  H04L45/28 ,  H04L69/40

    Abstract: In one embodiment, a server has connectivity to a network that includes a plurality of nodes. The server stores a context identifier that is associated with backup path information stored at a particular node of the plurality of nodes, the backup path information indicating a backup path in the network. The server sends to the particular node a probe packet having a data plane instruction label that includes an identifier of the particular node, the context identifier and server identifier information. The context identifier in the probe packet causes the particular node to retrieve the backup path information and send the probe packet to a next hop node in the backup path based on the backup path information. The server determines whether the probe packet is received at the server after traversing the backup path, and validates the backup path for the particular node accordingly.

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