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    Adaptive control plane policing
    1.
    发明授权
    Adaptive control plane policing 有权

    公开(公告)号：US12081443B2

    公开(公告)日：2024-09-03

    申请号：US17381552

    申请日：2021-07-21

    Applicant: Cisco Technology, Inc.

    Inventor： Roshan Lal ,  Rishi Chhibber ,  Anand Kumar Singh

    IPC: H04W72/23 ,  H04L1/00 ,  H04L1/1867 ,  H04L5/00 ,  H04L47/2441 ,  H04L47/25 ,  H04L47/32

    CPC classification number: H04L47/2441 ,  H04L47/25 ,  H04L47/32

    Abstract: Techniques are described for an adaptive CoPP that can adapt and change based on actual network control traffic rather than static CoPP rates. An aggressive CoPP can protect the CPU (route processor) of a network device, e.g., routers and switches, but may also penalize convergence and performance. An adaptive CoPP may protect CPU as well as boost convergence and performance parameters. In particular, traffic between two sites may be managed by proactively changing the thresholds of lower CoS traffic based on the CoPP utilization of various protocol/BPDU class traffic, thereby improving data plane convergence and application performance in scaled environments.

    Multicast error detection and recovery
    4.
    发明授权
    Multicast error detection and recovery 有权

    公开(公告)号：US10833808B1

    公开(公告)日：2020-11-10

    申请号：US16428203

    申请日：2019-05-31

    Applicant: Cisco Technology, Inc.

    Inventor： Roshan Lal ,  Rishi Chhibber ,  Mankamana Prasad Mishra ,  Peter Psenak ,  Padmanab Pathikonda ,  Francesco Meo ,  Anand Kumar Singh

    IPC: H04L1/12 ,  H04L12/18 ,  H04L1/18

    Abstract: Multicast error detection and recovery may be provided. A join request for a multicast stream may be sent from a first network node to a second network node. The join request may be sent over a first link of a plurality of links between the first network node and the second network node. A redirect message indicating that the second network node cannot accommodate the join request may be received by the first network node from the second network node. In response to receiving the redirect message, the join request for the multicast stream may not be sent on a second link of the plurality of links by the first network node to the second network node. And in response to receiving the redirect message, an alternate upstream network node may be determined by the first network node to send the join request for the multicast stream to.

    ADAPTIVE CONTROL PLANE POLICING
    7.
    发明申请
    ADAPTIVE CONTROL PLANE POLICING 有权

    公开(公告)号：US20230030452A1

    公开(公告)日：2023-02-02

    申请号：US17381552

    申请日：2021-07-21

    Applicant: Cisco Technology, Inc.

    Inventor： Roshan Lal ,  Rishi Chhibber ,  Anand Kumar Singh

    IPC: H04L12/851 ,  H04L12/823 ,  H04L12/825

    Abstract: Techniques are described for an adaptive CoPP that can adapt and change based on actual network control traffic rather than static CoPP rates. An aggressive CoPP can protect the CPU (route processor) of a network device, e.g., routers and switches, but may also penalize convergence and performance. An adaptive CoPP may protect CPU as well as boost convergence and performance parameters. In particular, traffic between two sites may be managed by proactively changing the thresholds of lower CoS traffic based on the CoPP utilization of various protocol/BPDU class traffic, thereby improving data plane convergence and application performance in scaled environments.

    Methods and apparatuses for non-blocking IP multicast delivery of media data in a multi-spine network
    8.
    发明授权
    Methods and apparatuses for non-blocking IP multicast delivery of media data in a multi-spine network 有权

    公开(公告)号：US10608924B2

    公开(公告)日：2020-03-31

    申请号：US16042870

    申请日：2018-07-23

    Applicant: Cisco Technology, Inc.

    Inventor： Padmanab Pathikonda ,  Rishi Chhibber ,  Roshan Lal ,  Ann Roshini Paul ,  Anand Kumar Singh ,  Nataraj Batchu

    IPC: H04L12/761 ,  H04L12/753

    Abstract: In one illustrative example, an IP network media data router includes a spine and leaf switch architecture operative to provide IP multicast delivery of media data from source devices to receiver devices without the overhead communication with a controller. The architecture can include K spine switches, K sets of L leaf switches, M data links between each leaf switch, and a plurality of bidirectional data ports connected to each leaf switch for a guaranteed non-blocking IP multicast delivery of data. A deterministic hash function a used on both the first hop router and the last hop router to ensure the same spine node is selected for flow stitching. Accordingly, without the extra communication with a centralized controller, the right spine for establishing a multicast flow can be chosen using the deterministic hash function and the distributed resource information stored on each node.

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