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    HARDWARE ACCELERATED PATH TRACING ANALYTICS
    1.
    发明公开
    HARDWARE ACCELERATED PATH TRACING ANALYTICS 审中-公开

    公开(公告)号：US20240297838A1

    公开(公告)日：2024-09-05

    申请号：US18227602

    申请日：2023-07-28

    申请人： Cisco Technology, Inc.

    发明人： Clarence Filsfils ,  Pablo Camarillo Garvia ,  Ahmed Mohamed Ahmed Abdelsalam ,  Sonia Ben Ayed ,  Jisu Bhattacharya

    IPC分类号： H04L43/0852 ,  H04L43/12

    CPC分类号： H04L43/0852 ,  H04L43/12

    摘要： Techniques for processing path tracing probe packets using hardware (e.g., hardware memory of a node) and without the involvement of a path tracing collector component of a network controller. A source node may be configured to generate and assign random flow labels to a large number of probe packets and send them through the network to a sink node. The sink node may determine whether a flow indicated by the probe packet has previously been traversed. Additionally, the sink node may determine latency values associated with the flows, and store probe packets in corresponding latency bins. The latency bins may be stored in hardware memory of the sink node. Telemetry data representing the probe packets stored in the latency bins may be sent to a network controller for further network analysis.

    Path Assurance in Shared Transport
    4.
    发明申请
    Path Assurance in Shared Transport 有权

    公开(公告)号：US20230009602A1

    公开(公告)日：2023-01-12

    申请号：US17727428

    申请日：2022-04-22

    申请人： Cisco Technology, Inc.

    发明人： Clarence Filsfils ,  Pablo Camarillo Garvia ,  Ahmed Mohamed Ahmed Abdelsalam ,  Karen Michele Cadora

    IPC分类号： H04L43/12 ,  H04L45/02

    摘要： Disclosed are systems, apparatuses, methods, and computer-readable media to measure performance of distinct paths of a network. A method includes determining a collection of hashes of a network based on a network probe event, each hash in the collection of hashes corresponding to a distinct path from a first edge device to a second edge device through the network; transmitting a collection of probes from the first edge device in the network, wherein each probe in the collection of probes is assigned a hash selected from the collection of hashes; receiving probes from the collection of probes at the second edge device; and determining a network performance of each distinct path through the network.

    VIRTUAL NETWORK FUNCTION PROOF OF TRANSIT
    5.
    发明公开
    VIRTUAL NETWORK FUNCTION PROOF OF TRANSIT 审中-公开

    公开(公告)号：US20240137281A1

    公开(公告)日：2024-04-25

    申请号：US18133950

    申请日：2023-04-11

    申请人： Cisco Technology, Inc.

    发明人： Clarence Filsfils ,  Ahmed Mohamed Ahmed Abdelsalam ,  Pablo Camarillo Garvia ,  Sonia Ben Ayed

    IPC分类号： H04L41/122 ,  H04L41/0895 ,  H04L41/40 ,  H04L43/10

    CPC分类号： H04L41/122 ,  H04L41/0895 ,  H04L41/40 ,  H04L43/10

    摘要： Techniques for monitoring data transport in a network virtualization function chain (chain). A path tracing packet is generated having a Midpoint Compressed Data (MCD) to collect path tracing information of the chain. The network virtualization function node is configured to record an MCD containing Wide Local Path Tracing Identification (WL PT ID). The WL PT ID includes a first field having a value that indicates that a non-standard path tracing format is to be used and a second field that indicates a particular path tracing format to be used. The path tracing packet is passed through the chain and is received back after passing through the chain. Data collected by the path tracing packet is then analyzed to determine which network virtualization function nodes and chains the path tracing packet passed through and the amount of time taken for the path tracing packet to pass through the chain.

    Inband group-based network policy using SRV6
    9.
    发明授权
    Inband group-based network policy using SRV6 有权

    公开(公告)号：US11418435B2

    公开(公告)日：2022-08-16

    申请号：US16860896

    申请日：2020-04-28

    申请人： Cisco Technology, Inc.

    发明人： Clarence Filsfils ,  Ahmed Mohamed Ahmed Abdelsalam ,  Francois Clad ,  Pablo Camarillo Garvia ,  Kiran Sasidharan Pillai

    IPC分类号： H04L45/50 ,  H04L12/46 ,  H04L45/74 ,  H04L45/28 ,  H04L69/22

    摘要： The present technology pertains to a group-based network policy using Segment Routing over an IPv6 dataplane (SRv6). After a source application sends a packet, an ingress node can receive the packet, and if the source node is capable, it can identify an application policy and apply it. The ingress node indicates that the policy has been applied by including policy bits in the packet encapsulation. When the packet is received by the egress node, it can determine whether the policy was already applied, and if so, the packet is forward to the destination application. If the egress node determines that the policy has not be applied the destination application can apply the policy. Both the ingress node and egress nodes can learn of source application groups, destination application groups, and applicable policies through communication with aspects of the segment routing fabric.