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    PERFORMANCE MEASUREMENT, TELEMETRY, AND OAM IN MPLS NETWORKS USING ENTROPY LABELS
    1.
    发明申请
    PERFORMANCE MEASUREMENT, TELEMETRY, AND OAM IN MPLS NETWORKS USING ENTROPY LABELS 有权

    公开(公告)号：US20250062981A1

    公开(公告)日：2025-02-20

    申请号：US18936874

    申请日：2024-11-04

    Applicant: Cisco Technology, Inc.

    Inventor： Rakesh Gandhi ,  Clarence Filsfils

    IPC: H04L45/12 ,  H04L12/46 ,  H04L43/0852 ,  H04L45/50

    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.

    REAL-TIME MANAGEMENT OF SERVICE NETWORK PATHWAYS
    2.
    发明申请
    REAL-TIME MANAGEMENT OF SERVICE NETWORK PATHWAYS 有权

    公开(公告)号：US20250055789A1

    公开(公告)日：2025-02-13

    申请号：US18629355

    申请日：2024-04-08

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Syed Kamran Raza ,  Pablo Camarillo Garvia ,  Jisu Bhattacharya

    IPC: H04L45/302 ,  H04L45/24 ,  H04L47/125 ,  H04L47/2483

    Abstract: This disclosure describes techniques and mechanisms for coupling measurement probes with customer data traffic and enabling real-time and selective management of ECMP pathways that are not meeting performance metric(s) in a service provider network. Nodes within the service provider network are configured to perform specific hashing behavior. An ingress node may be configured to create and maintain a TCAM table to store flow label(s) corresponding to ECMP pathways that are not meeting performance metric(s). The system may configure performance measurement session(s) between an ingress node and an egress node. The system may receive performance data, identify pathway(s) violating performance metric(s), and may perform action(s) in real-time.

    ECMP-AWARE TWAMP PERFORMANCE MEASUREMENTS
    3.
    发明申请
    ECMP-AWARE TWAMP PERFORMANCE MEASUREMENTS 有权

    公开(公告)号：US20240430188A1

    公开(公告)日：2024-12-26

    申请号：US18371848

    申请日：2023-09-22

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L43/10 ,  H04L43/04 ,  H04L43/08 ,  H04L45/24

    Abstract: Techniques for determine latency, loss, and liveness performance metrics associated with ECMP routes. The techniques may include determining that a TWAMP probe is to be sent from a first node to a second node along an equal-cost multipath ECMP route. In some examples, the first node may generate a packet for sending the TWAMP probe to the second node. The packet may include information specifying a forward path and reverse path to be traversed by the packet. In examples, the first node may send the packet to the second node along the ECMP route and subsequently receive the packet including telemetry data associated with the second node and a midpoint node of the ECMP route. Based at least in part on the telemetry data, the first node may determine a metric indicative of a performance measurement associated with the ECMP route.

    Circuit-style network with co-routed bidirectional network paths
    4.
    发明授权
    Circuit-style network with co-routed bidirectional network paths 有权

    公开(公告)号：US12160365B2

    公开(公告)日：2024-12-03

    申请号：US17741241

    申请日：2022-05-10

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Zafar Ali ,  Francois Clad ,  Bertrand Herbert Guy Duvivier ,  Mikhail Koldychev ,  Rakesh Gandhi ,  Sagar Soni

    IPC: H04L45/42 ,  H04L45/00 ,  H04L45/28 ,  H04L45/74

    Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to implement circuit-style network with co-routed bidirectional network paths. A method includes receiving a request for a circuit policy between a source node and a destination node, the circuit policy defining a co-routed bidirectional policy between the source node and the destination node; requesting a path compute service to identify a path between the source node and the destination node that satisfies the circuit policy through a first network; receiving a path identifying a first set of network nodes that satisfy the circuit policy; configuring each node in the first set of network nodes within the first network with the circuit policy; and establishing a connection using the path that satisfies the circuit policy between the source node and the destination node.

    VIRTUAL NETWORK FUNCTION PROOF OF TRANSIT
    6.
    发明公开
    VIRTUAL NETWORK FUNCTION PROOF OF TRANSIT 有权

    公开(公告)号：US20240235946A9

    公开(公告)日：2024-07-11

    申请号：US18133950

    申请日：2023-04-12

    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.

    VIRTUAL NETWORK FUNCTION PROOF OF TRANSIT
    7.
    发明公开
    VIRTUAL NETWORK FUNCTION PROOF OF TRANSIT 审中-公开

    公开(公告)号：US20240163179A1

    公开(公告)日：2024-05-16

    申请号：US18422801

    申请日：2024-01-25

    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 (NVF) chain. A path tracing packet is generated having a Midpoint Compressed Data (MCD) to collect path tracing information of the NVF chain. The NVF 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 has a second field that indicates a particular path tracing format to be used. The path tracing packet is passed through the NVF chain and is then received back again after passing through the NVF chain. Data collected by the path tracing packet is analyzed to determine which NVF nodes the path tracing packet passed through, and the amount of time taken for the path tracing packet to pass through, the NVF chain.

    Performance measurement, telemetry, and OAM in MPLS networks using entropy labels
    10.
    发明授权
    Performance measurement, telemetry, and OAM in MPLS networks using entropy labels 有权

    公开(公告)号：US11799757B2

    公开(公告)日：2023-10-24

    申请号：US17565823

    申请日：2021-12-30

    Applicant: Cisco Technology, Inc.

    Inventor： Rakesh Gandhi ,  Clarence Filsfils

    IPC: H04L45/12 ,  H04L43/0852 ,  H04L45/50 ,  H04L12/46

    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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