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    MALLEABLE ROUTING FOR DATA PACKETS
    131.
    发明申请
    MALLEABLE ROUTING FOR DATA PACKETS 有权

    公开(公告)号：US20250071051A1

    公开(公告)日：2025-02-27

    申请号：US18652622

    申请日：2024-05-01

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Peter Psenak ,  Francois Clad ,  Jose Antonio Liste

    IPC: H04L45/302 ,  H04L41/0813 ,  H04L45/12 ,  H04L45/42 ,  H04L45/44 ,  H04L45/50

    Abstract: Various implementations disclosed herein enable malleable routing for data packets. For example, in various implementations, a method of routing a type of data packets is performed by a device. In some implementations, the device includes a non-transitory memory and one or more processors coupled with the non-transitory memory. In some implementations, the method includes determining a routing criterion to transmit a set of data packets across a network. In some implementations, the method includes identifying network nodes and communication links in the network that satisfy the routing criterion. In some implementations, the method includes determining a route for the set of data packets through the network nodes and the communication links that satisfy the routing criterion. In some implementations, the method includes configuring the network nodes that are on the route with configuration information that allows the set of data packets to propagate along the route.

    SRV6 POLICY TYPE FOR PACKET PATH TRACING IN LARGE DIAMETER NETWORKS
    134.
    发明公开
    SRV6 POLICY TYPE FOR PACKET PATH TRACING IN LARGE DIAMETER NETWORKS 审中-公开

    公开(公告)号：US20240250896A1

    公开(公告)日：2024-07-25

    申请号：US18157002

    申请日：2023-01-19

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Ahmed Abdelsalam ,  Pablo Camarillo

    IPC: H04L45/00 ,  H04L45/74

    CPC classification number: H04L45/26 ,  H04L45/34 ,  H04L45/74

    Abstract: The present disclosure provides systems and methods for enabling packet path tracing (PT) in large diameter networks that would otherwise exceed a hop limit imposed by hardware edit-depth limitations. Upon determining that a Midpoint Compressed Data (MCD) stack of a packet header is full, a PT Encapsulation and Copy (PEC) enabled midpoint node can apply an encapsulation protocol that generates a new header grouping that encapsulates a previous header grouping therein, copies information from the previous header grouping into the new header grouping, and adds a new MCD stack to the packet header for further population of path tracing data and to ensure that the packet remains along the intended path. The encapsulation protocol ensures that the new header grouping remains within the edit-depth of each midpoint node encountered by the packet. The path tracing information can be combined at a controller resulting in full path information for the packet.

    VIRTUAL NETWORK FUNCTION PROOF OF TRANSIT
    135.
    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

    Applicant: Cisco Technology, Inc.

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

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

    CPC classification number: H04L41/122 ,  H04L41/0895 ,  H04L41/40 ,  H04L43/10

    Abstract: 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.

    PERFORMANCE MEASUREMENT, TELEMETRY, AND OAM IN MPLS NETWORKS USING ENTROPY LABELS
    138.
    发明公开
    PERFORMANCE MEASUREMENT, TELEMETRY, AND OAM IN MPLS NETWORKS USING ENTROPY LABELS 审中-公开

    公开(公告)号：US20240022500A1

    公开(公告)日：2024-01-18

    申请号：US18372587

    申请日：2023-09-25

    Applicant: Cisco Technology, Inc.

    Inventor： Rakesh Gandhi ,  Clarence Filsfils

    IPC: H04L45/12 ,  H04L43/0852 ,  H04L45/50

    CPC classification number: H04L45/123 ,  H04L43/0852 ,  H04L45/50 ,  H04L12/4633

    Abstract: Techniques for utilizing entropy labels of a Multiprotocol Label Switching (MPLS) label stack for performing monitoring operations (e.g., telemetry, performance measurement, OAM, etc.) without altering the MPLS label stack and/or packet path (e.g., ECMP path). The techniques may include determining, by a node of a network, to perform a monitoring operation associated with traffic that is to be sent along a path through the network. In some examples, the node may receive a packet that is to be sent along the path and encapsulate the packet with an MPLS header. The MPLS header may include an entropy label, entropy label indicator, or other label that is capable of carrying a flag indicating the monitoring operation to be performed. The flag may be carried in a TTL field or traffic class field of the label such that the MPLS label stack is not altered to trigger the monitoring operation.

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