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    Inband group-based network policy using SRV6
    41.
    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

    Applicant: Cisco Technology, Inc.

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

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

    Abstract: 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.

    PACKET TRACING MECHANISM IN A NETWORK LEVERAGING SRV6
    43.
    发明申请
    PACKET TRACING MECHANISM IN A NETWORK LEVERAGING SRV6 有权

    公开(公告)号：US20220029916A1

    公开(公告)日：2022-01-27

    申请号：US17492532

    申请日：2021-10-01

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Pablo Camarillo Garvia

    IPC: H04L12/741 ,  H04L12/26 ,  H04L12/751 ,  H04L29/06

    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.

    PACKET TRACING MECHANISM IN A NETWORK LEVERAGING SRV6
    45.
    发明申请
    PACKET TRACING MECHANISM IN A NETWORK LEVERAGING SRV6 有权

    公开(公告)号：US20210152470A1

    公开(公告)日：2021-05-20

    申请号：US16684006

    申请日：2019-11-14

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Pablo Camarillo Garvia

    IPC: H04L12/741 ,  H04L12/751 ,  H04L29/06 ,  H04L12/26

    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.

    SCALABLE NETWORK SLICE BASED QUEUING USING SEGMENT ROUTING FLEXIBLE ALGORITHM
    47.
    发明申请
    SCALABLE NETWORK SLICE BASED QUEUING USING SEGMENT ROUTING FLEXIBLE ALGORITHM 审中-公开

    公开(公告)号：US20200244588A1

    公开(公告)日：2020-07-30

    申请号：US16825168

    申请日：2020-03-20

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Zafar Ali ,  Pablo Camarillo Garvia ,  Francois Clad

    IPC: H04L12/863 ,  H04L12/911 ,  H04L12/851 ,  H04L12/801 ,  H04L12/26

    Abstract: The present technology is directed to a system and method for implementing network resource partitioning and Quality of Service (QoS) separation through network slicing. Embodiments of the present invention describe scalable network slicing method based on defining Segment Routing Flexible Algorithm to represent a network slice and assigning a distinct QoS policy queue to each of the Flexible Algorithms configured on a network node. Therefore, scalable network slice based queuing is implemented wherein a single packet processing queue is assigned to each Flex-Algorithm based network slice. QoS policy queue may be implemented in a hierarchical fashion by differentiation between flow packets in a single QoS policy queue based on value of experimental bits in the header.

    Methods and apparatus for encoding local processing metadata in network headers
    48.
    发明授权
    Methods and apparatus for encoding local processing metadata in network headers 有权

    公开(公告)号：US12267233B2

    公开(公告)日：2025-04-01

    申请号：US17538513

    申请日：2021-11-30

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Pablo Camarillo Garvia ,  Ahmed Mohamed Ahmed Abdelsalam ,  Francois Clad

    IPC: H04L45/00 ,  H04L45/302 ,  H04L45/74

    Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media to encode network functions in a packet header. A method includes receiving a first packet from a source device that is to be delivered to a destination address through a network; determining a route to the destination address; identifying at least one network function for the first packet; encapsulating the first packet in a second packet, wherein a header of the second packet includes the route to the destination address in a destination address field and local processing metadata associated with the at least one network function in a source address field; and forwarding the second packet to a next network node of the network identified in the destination address.

    NETWORK PATH DETECTION AND MONITORING
    49.
    发明申请
    NETWORK PATH DETECTION AND MONITORING 有权

    公开(公告)号：US20250062984A1

    公开(公告)日：2025-02-20

    申请号：US18934224

    申请日：2024-10-31

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Ahmed Mohamed Ahmed Abdelsalam ,  Rakesh Gandhi ,  Jisu Bhattacharya ,  Pablo Camarillo Garvia

    IPC: H04L45/24 ,  H04L43/10 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50 ,  H04L47/32

    Abstract: This disclosure describes techniques for detecting and monitoring paths in a network. The techniques include causing a source node to generate probe packets to traverse a multi-protocol label switching (MPLS) network, for instance. In some examples, the probe packets include entropy values that correspond to individual equal-cost multi-path (ECMP) paths of the network. The probe packets may be received at an SDN controller from a sink node after traversing the network. Analysis of the probe packets allow path discovery and mapping of the entropy values to ECMP paths. The mapping of discovered paths may be used for optimization of network monitoring activities, including second subsequent probe packets over particular ECMP paths based on the mapped entropy values.

    Network path detection and monitoring
    50.
    发明授权
    Network path detection and monitoring 有权

    公开(公告)号：US12206573B2

    公开(公告)日：2025-01-21

    申请号：US17691016

    申请日：2022-03-09

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Ahmed Mohamed Ahmed Abdelsalam ,  Rakesh Gandhi ,  Jisu Bhattacharya ,  Pablo Camarillo Garvia

    IPC: H04L45/24 ,  H04L43/10 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50 ,  H04L47/32

    Abstract: This disclosure describes techniques for detecting and monitoring paths in a network. The techniques include causing a source node to generate probe packets to traverse a multi-protocol label switching (MPLS) network, for instance. In some examples, the probe packets include entropy values that correspond to individual equal-cost multi-path (ECMP) paths of the network. The probe packets may be received at an SDN controller from a sink node after traversing the network. Analysis of the probe packets allow path discovery and mapping of the entropy values to ECMP paths. The mapping of discovered paths may be used for optimization of network monitoring activities, including second subsequent probe packets over particular ECMP paths based on the mapped entropy values.

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