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    HARDWARE ACCELERATED PATH TRACING ANALYTICS
    272.
    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

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L43/0852 ,  H04L43/12

    CPC classification number: H04L43/0852 ,  H04L43/12

    Abstract: 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.

    Systems and methods for compressing a SID list
    274.
    发明授权
    Systems and methods for compressing a SID list 有权

    公开(公告)号：US11936759B2

    公开(公告)日：2024-03-19

    申请号：US17820000

    申请日：2022-08-16

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Francois Clad ,  Pablo Camarillo Garvia ,  Siva Sivabalan ,  Syed Kamran Raza

    IPC: H04L69/04 ,  H04L45/74

    CPC classification number: H04L69/04 ,  H04L45/74

    Abstract: In one embodiment, a method includes identifying, by a network component, a first segment identifier (SID) within a SID list. The first SID includes a first SID block and a first micro SID (uSID). The method also includes initializing, by the network component, a packing list of a uSID carrier with the first uSID of the first SID and initializing, by the network component, a packing block of the uSID carrier with the first SID block of the first SID. The method further includes initializing, by the network component, a remaining packing capacity of the packing list with a carrier capacity of the first SID and initializing, by the network component, an empty compressed SID list.

    PACKET TRACING MECHANISM IN A NETWORK LEVERAGING SRV6
    275.
    发明公开
    PACKET TRACING MECHANISM IN A NETWORK LEVERAGING SRV6 审中-公开

    公开(公告)号：US20240039845A1

    公开(公告)日：2024-02-01

    申请号：US18456381

    申请日：2023-08-25

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Pablo Camarillo Garvia

    IPC: H04L45/74 ,  H04L43/106 ,  H04L69/22 ,  H04L45/02

    CPC classification number: H04L45/74 ,  H04L43/106 ,  H04L69/22 ,  H04L45/02

    Abstract: The present disclosure provides a packet tracing mechanism will be described that provides packet tracing information to a mobile network controller. In one aspect, a method includes receiving a data packet sent from a source node to a destination node; determining if the data packet is to be updated with packet tracing information; and upon determining that the data packet is to be updated, updating the packet tracing information of the data packet to include identification of the network device and an ingress timestamp of the data packet at the network device for a corresponding network controller to determining network routing policies.

    Communicating Packets Across Multi-Domain Networks Using Compact Forwarding Instructions
    276.
    发明公开
    Communicating Packets Across Multi-Domain Networks Using Compact Forwarding Instructions 审中-公开

    公开(公告)号：US20230300067A1

    公开(公告)日：2023-09-21

    申请号：US18200197

    申请日：2023-05-22

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Francois Clad ,  Zafar Ali ,  Peter Psenak

    IPC: H04L45/00 ,  H04L69/22 ,  H04L45/02

    CPC classification number: H04L45/34 ,  H04L69/22 ,  H04L45/04

    Abstract: Techniques and mechanisms for compressing the size of SIDs to be smaller than a complete IPv6 address (or “micro SIDs”), and scaling micro SIDs across a multi-domain environment using micro SID-domain-blocks. Segment routing over IPv6 (SRv6) uses 128-bit IPv6 addresses as SIDs for segment routing. According to this disclosure, multiple SRv6 SIDs may be expressed in a compact format such that a 128-bit IPv6 address, such as the destination address field of the IPv6 header, may store multiple micro SIDs. Further, SID-domain-blocks may be assigned to each domain in a multi-domain network such that micro SIDs may be expressed in the context of a given domain, rather than being shared in the global multi-domain network. In this way, lists of domain-specific SIDs may be fully expressed in the IPv6 destination address of the packet to scale micro SID into large, multi-domain networks.

    SYSTEMS AND METHODS FOR SECURING NETWORK PATHS
    279.
    发明公开
    SYSTEMS AND METHODS FOR SECURING NETWORK PATHS 审中-公开

    公开(公告)号：US20230216788A1

    公开(公告)日：2023-07-06

    申请号：US18174711

    申请日：2023-02-27

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Reshad Rahman ,  Eric Albin Voit

    IPC: H04L45/42 ,  H04L45/24 ,  H04L9/32

    CPC classification number: H04L45/42 ,  H04L45/24 ,  H04L9/3213

    Abstract: In one embodiment, a method includes determining a secure path through a first plurality of network nodes within a network and determining an alternate secure path through a second plurality of network nodes within the network. The method also includes routing network traffic through the first plurality of network nodes of the secure path and detecting a failure in the secure path using single-hop BFD authentication. The method further includes rerouting the network traffic through the second plurality of network nodes of the alternate secure path.

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