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    Explicit backups and fast re-route mechanisms for preferred path routes in a network
    1.
    发明授权
    Explicit backups and fast re-route mechanisms for preferred path routes in a network 有权

    公开(公告)号：US11502940B2

    公开(公告)日：2022-11-15

    申请号：US17083039

    申请日：2020-10-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Alvaro Retana ,  Uma S. Chunduri ,  Renwei Li ,  Toerless Eckert ,  Yingzhen Qu

    IPC: H04L45/00 ,  H04L45/021 ,  H04L45/28

    Abstract: A method implemented by a network element (NE) in a network, comprising receiving, by the NE, an advertisement comprising preferred path route (PPR) information and backup PPR information, the PPR information describing a PPR between a source and a destination in the network, the backup PPR information describing a backup PPR between the source and the destination, the PPR information comprising a PPR identifier (PPR-ID) and a plurality of PPR description elements (PPR-PDEs) each representing an element on the PPR, updating, by the NE, a local forwarding database to include the PPR information and the backup PPR information in association with a destination address of the destination, and transmitting, by the NE, a data packet based on the backup PPR information instead of the PPR information in response to an element on the PPR being unavailable due to a failure of an element along the PPR.

    Explicit Backups and Fast Re-Route Mechanisms For Preferred Path Routes in a Network
    2.
    发明申请
    Explicit Backups and Fast Re-Route Mechanisms For Preferred Path Routes in a Network 有权

    公开(公告)号：US20210051092A1

    公开(公告)日：2021-02-18

    申请号：US17083039

    申请日：2020-10-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Alvaro Retana ,  Uma S. Chunduri ,  Renwei Li ,  Toerless Eckert ,  Yingzhen Qu

    IPC: H04L12/707 ,  H04L12/755 ,  H04L12/703

    Abstract: A method implemented by a network element (NE) in a network, comprising receiving, by the NE, an advertisement comprising preferred path route (PPR) information and backup PPR information, the PPR information describing a PPR between a source and a destination in the network, the backup PPR information describing a backup PPR between the source and the destination, the PPR information comprising a PPR identifier (PPR-ID) and a plurality of PPR description elements (PPR-PDEs) each representing an element on the PPR, updating, by the NE, a local forwarding database to include the PPR information and the backup PPR information in association with a destination address of the destination, and transmitting, by the NE, a data packet based on the backup PPR information instead of the PPR information in response to an element on the PPR being unavailable due to a failure of an element along the PPR.

    Supporting multiple border gateway protocol (BGP) sessions using multiple QUIC streams
    4.
    发明授权
    Supporting multiple border gateway protocol (BGP) sessions using multiple QUIC streams 有权

    公开(公告)号：US11973851B2

    公开(公告)日：2024-04-30

    申请号：US18081200

    申请日：2022-12-14

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yingzhen Qu ,  Alvaro Retana

    IPC: H04L69/164 ,  H04L65/60

    CPC classification number: H04L69/164 ,  H04L65/60

    Abstract: A method of establishing streams within a QUIC connection implemented by a first network device, comprising: transmitting a first open message through the QUIC connection to a second network device, the first open message identifying a protocol; receiving a second open message through the QUIC connection from the second network device in response to transmitting the first open message, the second open message identifying the protocol; and establishing a first stream between the first network device and the second network device within the QUIC connection for the protocol identified in the first open message and in the second open message.

    Supporting Multiple Border Gateway Protocol (BGP) Sessions Using Multiple QUIC Streams
    5.
    发明申请
    Supporting Multiple Border Gateway Protocol (BGP) Sessions Using Multiple QUIC Streams 有权

    公开(公告)号：US20230116449A1

    公开(公告)日：2023-04-13

    申请号：US18081200

    申请日：2022-12-14

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Yingzhen Qu ,  Alvaro Retana

    IPC: H04L69/164 ,  H04L65/60

    Abstract: A method of establishing streams within a QUIC connection implemented by a first network device, comprising: transmitting a first open message through the QUIC connection to a second network device, the first open message identifying a protocol; receiving a second open message through the QUIC connection from the second network device in response to transmitting the first open message, the second open message identifying the protocol; and establishing a first stream between the first network device and the second network device within the QUIC connection for the protocol identified in the first open message and in the second open message.

    Explicit routing with network function encoding
    8.
    发明授权
    Explicit routing with network function encoding 有权

    公开(公告)号：US11374848B2

    公开(公告)日：2022-06-28

    申请号：US17080447

    申请日：2020-10-26

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Alvaro Retana ,  Renwei Li ,  Yingzhen Qu

    IPC: H04L45/02 ,  H04L45/42 ,  H04L45/00 ,  H04L45/64

    Abstract: A method of routing a data packet through a network comprises updating at least one router local forwarding table to include path IDs of network segments defining paths between network nodes and network function bit encoding/decoding information. In response to a data packet arriving at an ingress network node, an encapsulation header including a path ID identifying at least one network segment of an explicit routing path and a bit encoding specifying network functions to be performed on the data packet are encapsulated in unused portions of the source address and/or the destination address in the encapsulation header. A network node in the explicit routing path performs a network function encoded in the source address and/or the destination address of the encapsulation header of the data packet and forwards the data packet based on network function bit encoding/decoding and path ID information in the network node's local updated local forwarding table.

    Compressed Data Transmissions in Networks Implementing Interior Gateway Protocol
    9.
    发明申请
    Compressed Data Transmissions in Networks Implementing Interior Gateway Protocol 有权

    公开(公告)号：US20210377367A1

    公开(公告)日：2021-12-02

    申请号：US17399905

    申请日：2021-08-11

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Uma S. Chunduri ,  Toerless Eckert ,  Alvaro Retana

    IPC: H04L29/06 ,  H04L12/811

    Abstract: A method is performed by a network element (NE) in a network implementing an Interior Gateway Protocol (IGP). The method comprises generating a message comprising a header and data, wherein the header comprises a length of the data prior to compressing the data, a length of the data after compressing the data, and a compression identifier, compressing the data based on a compression scheme identified by the compression identifier to obtain compressed data, and forwarding a compressed message comprising the header and the compressed data to another NE in the network

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