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1.发明授权公开(公告)号：US11088950B2
公开(公告)日：2021-08-10
申请号：US16842331
申请日：2020-04-07
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Guoping Li , Zhenwei Zhang
IPC: H04L12/741 , H04L12/721 , H04L12/24 , H04L12/751 , H04L12/26 , H04L1/00 , H04L12/40 , H04L29/12 , H04L12/44 , H04L29/08
Abstract: A network device checks forwarding tables of routers in a network by sending check packets designed to reach a target router via label-forwarding. The network device determines a forwarding path from itself to a destination IP address, with the target router on the forwarding path and at N hops from itself. The network device then generates and sends a check packet having a label stack with N link labels correspond to the hops and a TTL value set to N+1. When the check packet is routed by the target router to a next-hop node of the target router, the TTL value is deducted to 0, causing the next-hop node to send a notification message to the network device. Based on the identity of the next hop node, the network device determines whether the forwarding table of the target router is correct.
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公开(公告)号：US11601492B2
公开(公告)日：2023-03-07
申请号：US17342444
申请日：2021-06-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hanshu Hong , Zhenwei Zhang , Tengxiang Zhang , Feng Dong
Abstract: A method for determining quality of an audio and video stream includes: obtaining a key indicator for a target audio and video stream, the key indicator including at least one of the following indicators within a reference time period: a maximum quantity of continuously lost packets, an average packet receiving time interval, an average packet receiving time interval variance, or a quantity of stream interruptions; and determining a QoE of the target audio and video stream based on the key indicator.
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3.发明申请公开(公告)号：US20220158936A1
公开(公告)日：2022-05-19
申请号：US17587539
申请日：2022-01-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanping Cao , Zhenwei Zhang
Abstract: A packet transmission path determining method includes a management device that obtains N mirrored packets of a target packet, where each mirrored packet is generated by one of N network devices that transmit the target packet, and each mirrored packet comprises an identifier of the network device that generates the mirrored packet. The management device determines a transmission path of the target packet based on the N mirrored packets.
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公开(公告)号：US12015519B2
公开(公告)日：2024-06-18
申请号：US17691736
申请日：2022-03-10
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhongyu Wang , Yuming Xie , Wei Song , Zhenwei Zhang
IPC: H04L41/0677 , H04L41/0631 , H04L41/12 , H04L41/14
CPC classification number: H04L41/0677 , H04L41/0631 , H04L41/12 , H04L41/145
Abstract: A management device obtains network data of a target network. The network data includes a network topology of the target network and device information of a plurality of network devices in the target network, and the device information includes one or more of interface configuration information, protocol configuration information, and service configuration information. The management device extracts a plurality of knowledge graph triplets from the network data. Each knowledge graph triplet includes two network entities and a relationship between the two network entities. The type of the network entity may be a network device, an interface, a protocol, or a service. The management device generates a knowledge graph of the target network based on the plurality of knowledge graph triplets. The knowledge graph of the target network can be used to visualize the network data.
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公开(公告)号：US20200304410A1
公开(公告)日：2020-09-24
申请号：US16842331
申请日：2020-04-07
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Guoping Li , Zhenwei Zhang
IPC: H04L12/741 , H04L12/721 , H04L12/24 , H04L12/751 , H04L12/26 , H04L29/12 , H04L29/08
Abstract: A network device checks forwarding tables of routers in a network by sending check packets designed to reach a target router via label-forwarding. The network device determines a forwarding path from itself to a destination IP address, with the target router on the forwarding path and at N hops from itself. The network device then generates and sends a check packet having a label stack with N link labels correspond to the hops and a TTL value set to N+1. When the check packet is routed by the target router to a next-hop node of the target router, the TTL value is deducted to 0, causing the next-hop node to send a notification message to the network device. Based on the identity of the next hop node, the network device determines whether the forwarding table of the target router is correct.
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Patent Agency Ranking
公开(公告)号：US20180375770A1
公开(公告)日：2018-12-27
申请号：US16123576
申请日：2018-09-06
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Guoping Li , Zhenwei Zhang
IPC: H04L12/741 , H04L29/12 , H04L29/08
Abstract: A network device checks forwarding tables of routers in a network by sending check packets designed to reach a target router via label-forwarding. The network device determines a forwarding path from itself to a destination IP address, with the target router on the forwarding path and at N hops from itself. The network device then generates and sends a check packet having a label stack with N link labels correspond to the hops and a TTL value set to N+1. When the check packet is routed by the target router to a next-hop node of the target router, the TTL value is deducted to 0, causing the next-hop node to send a notification message to the network device. Based on the identity of the next hop node, the network device determines whether the forwarding table of the target router is correct.
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公开(公告)号：US20210344704A1
公开(公告)日：2021-11-04
申请号：US17244396
申请日：2021-04-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhenwei Zhang
IPC: H04L29/06
Abstract: A network defense method and a security detection device, to resolve a problem of malicious traffic spreading in a campus network. The method includes a security detection device receiving a first packet. The security detection device detects the first packet when security detection on the first packet is not completed and a security detection capability of the security detection device is sufficient to detect the first packet. Furthermore, the security detection device forwards the first packet when security detection on the first packet is not completed and the security detection capability of the security detection device is insufficient.
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公开(公告)号：US20210168021A1
公开(公告)日：2021-06-03
申请号：US17106915
申请日：2020-11-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhongyu Wang , Yuming Xie , Zhenwei Zhang , Yunpeng Gao , Xin Xiao
Abstract: In a fault root cause determining method, a management device obtains a fault feature of a target network in which a fault occurs. The fault feature is determined based on a knowledge graph of the target network in which the fault occurs. The knowledge graph includes a network entity and an abnormal event entity. The abnormal event entity is connected to an abnormal network entity. The abnormal network entity is a network entity that generates an abnormal event in the target network. The abnormal event entity is configured to indicate the abnormal event generated by the abnormal network entity. A type of the network entity is a network device, an interface, a protocol, or a service. The management device determines a fault root cause of the target network based on the fault feature.
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公开(公告)号：US20200304391A1
公开(公告)日：2020-09-24
申请号：US16822703
申请日：2020-03-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Song , Zhenwei Zhang
IPC: H04L12/26 , H04L29/12 , H04L29/06 , H04L12/823
Abstract: A network performance detection apparatus collects, based on identification information of a received data packet, statistics on data packets having the same identification information to obtain packet block information corresponding to the identification information and sends the packet block information to a second device when statistics collection of the packet block information corresponding to the identification information is completed to determine packet block quality information corresponding to the identification information. The identification information includes a flow identifier and a block identifier. The flow identifier includes a source Internet Protocol (IP) address, a source port, a destination IP address, and a destination port of the data packet. The block identifier is a higher N-bit value of an IP identity (IPID) field in the data packet.
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公开(公告)号：US11362884B2
公开(公告)日：2022-06-14
申请号：US17106915
申请日：2020-11-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhongyu Wang , Yuming Xie , Zhenwei Zhang , Yunpeng Gao , Xin Xiao
IPC: H04L41/0631 , G06K9/62 , H04L41/0604
Abstract: In a fault root cause determining method, a management device obtains a fault feature of a target network in which a fault occurs. The fault feature is determined based on a knowledge graph of the target network in which the fault occurs. The knowledge graph includes a network entity and an abnormal event entity. The abnormal event entity is connected to an abnormal network entity. The abnormal network entity is a network entity that generates an abnormal event in the target network. The abnormal event entity is configured to indicate the abnormal event generated by the abnormal network entity. A type of the network entity is a network device, an interface, a protocol, or a service. The management device determines a fault root cause of the target network based on the fault feature.
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