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.

公开(公告)号：US20200382426A1

公开(公告)日：2020-12-03

申请号：US16993269

申请日：2020-08-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guoping Li ,  Tingqiu Yuan ,  Boyan Tu ,  Tao Ma

IPC: H04L12/801 ,  H04L12/851 ,  H04L12/841

Abstract: This application discloses a method for controlling traffic in a packet-based network. In the method, after receiving a control packet from a transmit end, an intermediate node between the transmit end and the receive end sends a control packet at the head of a first control queue based on first duration, wherein the first duration is obtained based on a committed burst size (CBS) and a first committed information rate (CIR), and the intermediate node is configured to send a packet of a first transmit end to a first receive end in the packet-based network. After sending the control packet in the control queue, the intermediate node sends a first data packet set at the head of a data queue based on the sent control packet, wherein the first data packet set comprises C data packets, and C is an integer greater than or equal to 1.

公开(公告)号：US10819605B2

公开(公告)日：2020-10-27

申请号：US15391259

申请日：2016-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guoping Li ,  Danian Shi ,  Xiaoyang Xu

IPC: H04L1/24 ,  H04L12/26 ,  H04L12/42

Abstract: A method and an apparatus for implementing delay measurement. The method includes: determining, by a measurement apparatus, a delay T0 generated when a first packet is transmitted at a first priority over a first loopback path that includes a first sub-path and a second sub-path; determining a delay T1 generated when a second packet is transmitted over a second loopback path that includes the first sub-path, the second sub-path, a third sub-path, and a fourth sub-path, where the second packet is transmitted at the first priority over the first sub-path and the second sub-path and is transmitted at a second priority over the third sub-path and the fourth sub-path; and determining a delay according to T0 and T1. Therefore a delay can be measured only by implementing a measurement function in the measurement apparatus, thereby resolving a problem of complex implementation.

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.

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.

公开(公告)号：US12028256B2

公开(公告)日：2024-07-02

申请号：US17972652

申请日：2022-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guoping Li ,  Tingqiu Yuan ,  Boyan Tu ,  Tao Ma

IPC: H04L47/10 ,  H04L47/24 ,  H04L47/283 ,  H04L47/34

CPC classification number: H04L47/18 ,  H04L47/24 ,  H04L47/283 ,  H04L47/34

Abstract: This application discloses a method for controlling traffic in a packet-based network. In the method, after receiving a control packet from a transmit end, an intermediate node between the transmit end and the receive end sends a control packet at the head of a first control queue based on a first duration, wherein the first duration is obtained based on a committed burst size (CBS) and a first committed information rate (CIR), and the intermediate node is configured to send a packet of a first transmit end to a first receive end in the packet-based network. After sending the control packet in the control queue, the intermediate node sends a first data packet set at the head of a data queue based on the sent control packet, wherein the first data packet set comprises C data packets, and C is an integer greater than or equal to 1.

公开(公告)号：US20170195205A1

公开(公告)日：2017-07-06

申请号：US15391259

申请日：2016-12-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Guoping Li ,  Danian Shi ,  Xiaoyang Xu

IPC: H04L12/26 ,  H04L12/42

Abstract: A method and an apparatus for implementing delay measurement. The method includes: determining, by a measurement apparatus, a delay T0 generated when a first packet is transmitted at a first priority over a first loopback path that includes a first sub-path and a second sub-path; determining a delay T1 generated when a second packet is transmitted over a second loopback path that includes the first sub-path, the second sub-path, a third sub-path, and a fourth sub-path, where the second packet is transmitted at the first priority over the first sub-path and the second sub-path and is transmitted at a second priority over the third sub-path and the fourth sub-path; and determining a delay according to T0 and T1. Therefore a delay can be measured only by implementing a measurement function in the measurement apparatus, thereby resolving a problem of complex implementation.

公开(公告)号：US11876715B2

公开(公告)日：2024-01-16

申请号：US17069378

申请日：2020-10-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tingqiu Yuan ,  Cong Xu ,  Guoping Li ,  Boyan Tu

IPC: G06F15/16 ,  H04L47/125 ,  H04L43/10 ,  H04L47/11 ,  H04L47/283

CPC classification number: H04L47/125 ,  H04L43/10 ,  H04L47/115 ,  H04L47/283

Abstract: A load balancing method, device and system, where the method includes: determining, based on load statuses of respective probe channels on n paths between a source end and a destination end, a target path with a lightest load in the n paths, where a probe channel is used to transmit a probe packet that includes a bandwidth probe packet; sending a bandwidth probe packet to the destination end through a probe channel on the target path; receiving the bandwidth probe packet returned by the destination end; and sending, based on the bandwidth probe packet returned by the destination end, a to-be-transmitted data packet to the destination end through a data channel on the target path. Therefore, load balancing among a plurality of paths is implemented.

公开(公告)号：US11516134B2

公开(公告)日：2022-11-29

申请号：US16993269

申请日：2020-08-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guoping Li ,  Tingqiu Yuan ,  Boyan Tu ,  Tao Ma

IPC: H04L47/10 ,  H04L47/24 ,  H04L47/283 ,  H04L47/34

Abstract: This application discloses a method for controlling traffic in a packet-based network. In the method, after receiving a control packet from a transmit end, an intermediate node between the transmit end and the receive end sends a control packet at the head of a first control queue based on first duration, wherein the first duration is obtained based on a committed burst size (CBS) and a first committed information rate (CIR), and the intermediate node is configured to send a packet of a first transmit end to a first receive end in the packet-based network. After sending the control packet in the control queue, the intermediate node sends a first data packet set at the head of a data queue based on the sent control packet, wherein the first data packet set comprises C data packets, and C is an integer greater than or equal to 1.

公开(公告)号：US20210029041A1

公开(公告)日：2021-01-28

申请号：US17069378

申请日：2020-10-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tingqiu Yuan ,  Cong Xu ,  Guoping Li ,  Boyan Tu

IPC: H04L12/803 ,  H04L12/841 ,  H04L12/801 ,  H04L12/26

Abstract: A load balancing method, device and system, where the method includes: determining, based on load statuses of respective probe channels on n paths between a source end and a destination end, a target path with a lightest load in the n paths, where a probe channel is used to transmit a probe packet that includes a bandwidth probe packet; sending a bandwidth probe packet to the destination end through a probe channel on the target path; receiving the bandwidth probe packet returned by the destination end; and sending, based on the bandwidth probe packet returned by the destination end, a to-be-transmitted data packet to the destination end through a data channel on the target path. Therefore, load balancing among a plurality of paths is implemented.