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公开(公告)号：US20230344763A1
公开(公告)日：2023-10-26
申请号：US18341554
申请日：2023-06-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huaimo Chen
IPC: H04L45/745 , H04L45/17 , H04L45/42
CPC classification number: H04L45/745 , H04L45/17 , H04L45/42
Abstract: A method implemented by a network node in a Bit Index Explicit Replication Traffic/Tree Engineering (BIER-TE) domain is used to avoid duplicate packets. The method includes generating an improved bit index forwarding table (BIFT) containing a forwarding entry for a local area network (LAN)-connected adjacency from the network node to a pseudo node; and a secondary BIFT including a forwarding entry for a forward connected adjacency from the pseudo node to each of the pseudo node's next hop nodes except the network node; sending a packet containing a point to multipoint (P2MP) path with a bit position for the LAN-connected adjacency to the pseudo node according to the forwarding entry for the LAN-connected adjacency in the improved BIFT; and sending the packet to each of the pseudo node's next hop nodes on the P2MP path based on the secondary BIFT.
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公开(公告)号：US20230300060A1
公开(公告)日：2023-09-21
申请号：US18304016
申请日：2023-04-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Linda Dunbar , Haoyu Song , Kaippallimalil Mathew John , Huaimo Chen
IPC: H04L45/121 , H04L45/02 , H04L47/125
CPC classification number: H04L45/121 , H04L45/04 , H04L47/125
Abstract: A method and apparatus for optimizing network delivery of fifth generation (5G) edge application services by weighting network latency along with a load, capacity, and preference of an application server to determine where to transmit a new flow of packets. By using the weighted approach, network traffic can be equalized among multiple instances (e.g., applications) with the same address.
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53.发明申请公开(公告)号：US20230055501A1
公开(公告)日：2023-02-23
申请号：US17981247
申请日：2022-11-04
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.
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公开(公告)号：US20220094632A1
公开(公告)日：2022-03-24
申请号：US17543717
申请日：2021-12-06
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Huaimo Chen , Dean Cheng
IPC: H04L12/721 , H04L12/751 , H04L12/703 , H04L12/753
Abstract: Disclosed is a mechanism for implementing link state flooding reduction (LSFR) in an Interior Gateway Protocol (IGP) network. The mechanism includes receiving data indicating connectivity of a plurality of nodes in the network. A flooding topology is built based on the connectivity. This includes selecting one of the nodes as a root node, and building a tree of links connecting the root node to the nodes in the network. The flooding topology is stored in a memory. The flooding topology may not be to the remaining nodes in the network. Link state messages may then be flooded over the flooding topology.
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公开(公告)号：US20210218637A1
公开(公告)日：2021-07-15
申请号：US17157540
申请日：2021-01-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huaimo Chen
IPC: H04L12/24 , H04L12/721
Abstract: A method for encoding messages of a flooding topology and backup paths of the flooding topology. The method includes monitoring a status of a network, and detecting at least one network failure. The network failure is one of a link failure, a node failure, or both. A backup path for each of the links and nodes on a flooding topology is computed. The backup paths for a link are encoded in a link backup path (LBP) data structure. The LBP data structure for the link is encoded in a LBP type-length-value (TLV). The encoded LBP-TLV comprising the encoded LBP data structure for the link is encoded in a backup paths opaque link state advertisement (LSA). The flooding topology is flooded with the backup paths opaque LSA.
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Patent Agency Ranking
公开(公告)号：US20210029020A1
公开(公告)日：2021-01-28
申请号：US17068457
申请日：2020-10-12
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huaimo Chen , Zhenbin Li , Lijun Dong
IPC: H04L12/721
Abstract: A method, performed by a network node, for enabling Interior Gateway Protocol (IGP) fast convergence, the method includes determining that there is a significant change in link state information, the significant change is at least one of a link down, a link up, and a link metric change. The method further includes originating a link state packet comprising a flag that is set to indicate the significant change in the link state information; and distributing the link state packet.
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公开(公告)号：US20240348463A1
公开(公告)日：2024-10-17
申请号：US18754889
申请日：2024-06-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huaimo Chen
IPC: H04L12/18 , H04L45/00 , H04L45/16 , H04L45/484
CPC classification number: H04L12/18 , H04L45/16 , H04L45/34 , H04L45/484
Abstract: A method implemented by an ingress network node in a segment routing (SR) multicast domain along a point-to-multipoint (P2MP) path. The method includes receiving a packet from a traffic source; encapsulating the packet with a segment routing header (SRH) that includes a sub-tree of the P2MP path through the SR multicast domain, where the sub-tree includes a reduced multicast segment identifier (rSID) for a link along the sub-tree; and sending the packet toward the next hop network node based on the rSID of the SRH.
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公开(公告)号：US11991074B2
公开(公告)日：2024-05-21
申请号：US17543717
申请日：2021-12-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huaimo Chen , Dean Cheng
Abstract: Disclosed is a mechanism for implementing link state flooding reduction (LSFR) in an Interior Gateway Protocol (IGP) network. The mechanism includes receiving data indicating connectivity of a plurality of nodes in the network. A flooding topology is built based on the connectivity. This includes selecting one of the nodes as a root node, and building a tree of links connecting the root node to the nodes in the network. The flooding topology is stored in a memory. The flooding topology may not be to the remaining nodes in the network. Link state messages may then be flooded over the flooding topology.
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公开(公告)号：US20230121236A1
公开(公告)日：2023-04-20
申请号：US18082999
申请日：2022-12-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huaimo Chen
Abstract: Disclosed is a mechanism implemented by an ingress node in a network. The mechanism comprises receiving, at a receiver of the ingress node, a packet. A segment list describing a segment routing point-to-multipoint (SR P2MP) path is pushed onto the packet. The packet is transmitted on a downstream interface along the SR P2MP path.
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公开(公告)号：US20230040043A1
公开(公告)日：2023-02-09
申请号：US17967448
申请日：2022-10-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huaimo Chen
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 configured 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 list of segments. The method further includes adding the SRH to the packet and forwarding the packet with the SRH to a third node in the SR network domain.
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