公开(公告)号：US20230035009A1

公开(公告)日：2023-02-02

申请号：US17967430

申请日：2022-10-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huaimo Chen

IPC: H04L45/42 ,  H04L45/00 ,  H04L45/741

Abstract: A method implemented by a first node in a segment routing (SR) network domain includes receiving, from a second node of another network domain, a packet that is to pass through the SR network domain in accordance with segment identifiers (SIDs). The method also includes obtaining compressed SIDs corresponding to some of the SIDs. The method includes generating, by the first node, a segment routing header (SRH) having a list of segments and a segment left (SL) field. The method finally includes adding the SRH to the packet, and forwarding the packet with the SRH to a third node in the SR network domain.

公开(公告)号：US20230030344A1

公开(公告)日：2023-02-02

申请号：US17967398

申请日：2022-10-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huaimo Chen

IPC: H04L45/74 ,  H04L45/00 ,  H04L69/04 ,  H04L69/22

Abstract: A method implemented by a first node in a segment routing (SR) network domain includes receiving, from a second node of another network domain, a packet that is to pass through the SR network domain in accordance with segment identifiers (SIDs). The method also includes obtaining compressed SIDs corresponding to some of the SIDs. The method includes generating a segment routing header (SRH) having a flag field with a first sub-field, a tag field with a second sub-field and a third sub-field, and a segment list. The method finally includes adding the SRH to the packet, and forwarding the packet with the SRH to a third node in the SR network domain.

公开(公告)号：US11546252B2

公开(公告)日：2023-01-03

申请号：US17210148

申请日：2021-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huaimo Chen

IPC: H04L45/28 ,  H04L43/0823 ,  H04L45/12 ,  H04L45/00 ,  H04L45/24 ,  H04L45/44 ,  H04L41/0668 ,  H04L45/48 ,  H04L45/18 ,  H04L49/55

Abstract: A parallel flooding topology repair method performed by a node for repairing a flooding topology. The parallel flooding topology repair method detects a failed link and/or a failed node on a flooding topology, determines whether the failed link and/or failed node results in a flooding topology split, and repair the flooding topology by performing a local flooding topology repair process when the flooding topology is split.

公开(公告)号：US20220385530A1

公开(公告)日：2022-12-01

申请号：US17886347

申请日：2022-08-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huaimo Chen ,  Donald Eggleston Eastlake, III

IPC: H04L41/0695 ,  H04L41/0668 ,  H04L41/0893 ,  H04L41/0686

Abstract: A method performed by a network controller for providing network reliability. The method includes employing an Interior Gateway Protocol (IGP) proxy configured to communicate controller information about the network controller to the one or more network elements using IGP (Link-State Advertisement (LSA) or Link State Protocol Data Unit (LSP)) with a Controllers TLV. The method uses the controller information for proper election of a primary controller in the event of a network failure.

公开(公告)号：US11516111B2

公开(公告)日：2022-11-29

申请号：US17035228

申请日：2020-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huaimo Chen ,  Zhibo Hu

IPC: H04L45/02 ,  H04L45/50 ,  H04L47/2441 ,  H04L67/56

Abstract: A Proxy Forwarding node configured to advertise Segment Routing (SR) proxy forwarding capability of the Proxy Forwarding node for neighboring nodes of the Proxy Forwarding node using extensions to interior gateway protocol (IGP) for Proxy Forwarding for enabling an ingress node to the SR Traffic Engineering (SR-TE) path to continue to forward the traffic without modifying a segment list of the SR-TE path that includes a node segment identifier (SID) of a failed neighboring node of the Proxy Forwarding node. When the Proxy Forwarding node receives traffic targeting the failed neighboring node, the Proxy Forwarding node performs SR proxy forwarding for the failed neighboring node by forwarding the traffic towards a destination of the traffic in a direction that avoids the failed neighboring node for a period of time after the IGP has converged.

公开(公告)号：US20210014146A1

公开(公告)日：2021-01-14

申请号：US17035228

申请日：2020-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huaimo Chen ,  Zhibo Hu

IPC: H04L12/751 ,  H04L12/723 ,  H04L12/715 ,  H04L12/851 ,  H04L29/08

Abstract: A Proxy Forwarding node configured to advertise Segment Routing (SR) proxy forwarding capability of the Proxy Forwarding node for neighboring nodes of the Proxy Forwarding node using extensions to interior gateway protocol (IGP) for Proxy Forwarding for enabling an ingress node to the SR Traffic Engineering (SR-TE) path to continue to forward the traffic without modifying a segment list of the SR-TE path that includes a node segment identifier (SID) of a failed neighboring node of the Proxy Forwarding node. When the Proxy Forwarding node receives traffic targeting the failed neighboring node, the Proxy Forwarding node performs SR proxy forwarding for the failed neighboring node by forwarding the traffic towards a destination of the traffic in a direction that avoids the failed neighboring node for a period of time after the IGP has converged.