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    MULTICAST TRAFFIC OPTIMIZATION IN MULTIHOMED EDGE NETWORK ELEMENTS
    23.
    发明申请
    MULTICAST TRAFFIC OPTIMIZATION IN MULTIHOMED EDGE NETWORK ELEMENTS 有权

    公开(公告)号：US20220209977A1

    公开(公告)日：2022-06-30

    申请号：US17329651

    申请日：2021-05-25

    Applicant: Cisco Technology, Inc.

    Inventor： Mankamana Mishra ,  Swadesh Agrawal ,  Ali Sajassi ,  Ijsbrand Wijnands ,  Samir Thoria

    IPC: H04L12/18 ,  H04L45/50

    Abstract: A computer network efficiently provides a multicast network flow to a multicast recipient across a multihomed network element. The multihomed network element includes network devices that receive multicast data from a source of a multicast network flow. Each particular network device that received the multicast data publishes a notification indicating that the multicast network flow is available from the particular network device. The computer network receives a subscription to the multicast network flow from a multicast recipient, and determines whether to bridge the multicast data across the multihomed network element based on a multicast configuration of the computer network. The multihomed network element provides the multicast data to the multicast recipient from at least one of the particular network devices that received the multicast data from the source of the multicast network flow.

    PATH COUNT MANAGEMENT
    24.
    发明申请
    PATH COUNT MANAGEMENT 有权

    公开(公告)号：US20210377174A1

    公开(公告)日：2021-12-02

    申请号：US16891035

    申请日：2020-06-02

    Applicant: Cisco Technology, Inc.

    Inventor： Sameer Gulrajani ,  Swadesh Agrawal

    IPC: H04L12/745 ,  H04L12/733 ,  H04L12/707 ,  H04L12/803

    Abstract: This disclosure describes techniques for managing path counts at a router. The techniques include monitoring available storage space at a router for storing per prefix routes. In an instance where the available storage space at the router may be inadequate to support continued, stable network operations, the techniques include reducing an amount of per prefix routes that are advertised to the router. The techniques may also include withdrawing previously advertised per prefix routes from the router. As such, path count management concepts may help prevent overload of storage space at a router.

    Applying Attestation Tokens to Multicast Routing Protocols
    25.
    发明申请
    Applying Attestation Tokens to Multicast Routing Protocols 有权

    公开(公告)号：US20210328794A1

    公开(公告)日：2021-10-21

    申请号：US16867795

    申请日：2020-05-06

    Applicant: Cisco Technology, Inc.

    Inventor： Mankamana Prasad Mishra ,  Ketan Jivan Talaulikar ,  Sameer Ranjit Gulrajani ,  Swadesh Agrawal

    IPC: H04L9/32

    Abstract: In one embodiment, method includes receiving, by a first network apparatus, a first multicast message from a second network apparatus. The first multicast message includes attestation-capability information associated with the second network apparatus and an attestation token. The attestation token is for proving that the second network apparatus is in a known safe state. The method also includes determining, by the first network apparatus, that the attestation-capability information satisfies a pre-determined attestation capability requirement and determining, by the first network apparatus, that the attestation token is valid for the second network apparatus at a current time. The method further includes establishing, by the first network apparatus, an adjacency to the second network apparatus.

    Packet network interworking including segment routing
    26.
    发明授权
    Packet network interworking including segment routing 有权

    公开(公告)号：US11134002B2

    公开(公告)日：2021-09-28

    申请号：US16659484

    申请日：2019-10-21

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L12/715 ,  H04L12/749

    Abstract: In one embodiment, a network comprises a first forwarding domain using a first data plane forwarding protocol and a second forwarding domain using a second data plane forwarding protocol different than the first data forwarding plane forwarding protocol. The first forwarding domain includes a first path node and a particular border node. The second forwarding domain includes a second path node and the particular border node. The particular border node performs Segment Routing or other protocol interworking between the different data plane forwarding domains, such as for transporting packets through a different forwarding domain or translating a packet to use a different data forwarding protocol. These forwarding domains typically include Segment Routing (SR) and SR-Multiprotocol Label Switching (SR-MPLS). Paths through the network are determined by a Path Computation Engine and/or based on route advertisements such associated with Binding Segment Identifiers (BSIDs) (e.g., labels, Internet Protocol version 6 addresses).

    Soft-Failure Protection for Multicast Communications
    28.
    发明申请
    Soft-Failure Protection for Multicast Communications 有权

    公开(公告)号：US20210111945A1

    公开(公告)日：2021-04-15

    申请号：US16599010

    申请日：2019-10-10

    Applicant: Cisco Technology, Inc.

    Inventor： Mankamana Prasad Mishra ,  Ali Sajassi ,  Krishnaswamy Muddenahally Ananthamurthy ,  Samir Thoria ,  Suma Kachinthaya ,  Swadesh Agrawal

    IPC: H04L12/24 ,  H04L12/18 ,  H04L29/12 ,  H04L12/947

    Abstract: In one embodiment, a first computer networking device executes an election algorithm to determine whether at least the first computer networking device or a second computer networking device is responsible for forwarding, to at least one receiving device, communications addressed to a specified group of computing devices. The first computer networking device may further store first data indicating that the first computer networking device is responsible for forwarding the communications. However, in response to the first computer networking device determining that it is no longer receiving the communications, it may store second data indicating that the first computer networking device is no longer responsible for forwarding the communications and may send, to the second computer networking device, third data indicating that the first computer networking device is not receiving the communications.

    NETWORK INTERWORKING WITH NO CROSS-DOMAIN STATE
    29.
    发明申请
    NETWORK INTERWORKING WITH NO CROSS-DOMAIN STATE 有权

    公开(公告)号：US20210021513A1

    公开(公告)日：2021-01-21

    申请号：US16513379

    申请日：2019-07-16

    Applicant: Cisco Technology, Inc.

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

    IPC: H04L12/723 ,  H04L12/715 ,  H04L12/46 ,  H04L12/749

    Abstract: Network interworking with no cross-domain state may be provided. First, an edge node may receive a packet from an intermediate node in a first domain. The edge node may be between the first domain and a second domain. Next, the edge node may pop, in response to a first Service Identifier (SID) in the packet, headers corresponding to the first domain from the packet. The edge node may then push, in response to the first SID, a label stack corresponding to the second domain onto the packet. The first SID may include data corresponding to the label stack. Then the edge node may route the packet to the second domain destine to an end node in the second domain.

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