公开(公告)号：US20190182152A1

公开(公告)日：2019-06-13

申请号：US16279401

申请日：2019-02-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Changjiang Yan ,  Shunwan Zhuang ,  Nan Wu ,  Guoyi Chen ,  Zhenbin Li ,  Baohua Song

IPC: H04L12/741

Abstract: An information synchronization method includes sending, by a controller, a first message to a network device, where the first message carries control routing protocol (CRP) routing entry information, and is used to advertise a CRP route, and the first message includes first identification information, and after receiving the first message, storing, by a forwarding device, the CRP routing entry information into a CRP routing table of the network device as indicated by the first identification information. Hence, because a route advertised by the controller and a route advertised using a routing protocol between forwarding devices are stored in different routing tables, a related application of the route advertised using the routing protocol between the forwarding devices is not affected.

公开(公告)号：US20190182145A1

公开(公告)日：2019-06-13

申请号：US16279398

申请日：2019-02-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Changjiang Yan ,  Shunwan Zhuang ,  Nan Wu

IPC: H04L12/733 ,  H04L12/741 ,  H04L12/66 ,  H04L12/46

Abstract: An information management method includes that a controller generates a first message carrying an address of a first next hop of a network device. The first message includes first identification information. The first identification information instructs the network device to delete, from a next hop table stored in the network device, an entry of the first next hop corresponding to the address of the first next hop. The network device receives the first message, and deletes the entry of the first next hop as indicated by the first identification information. The controller withdraw an unavailable next hop by separately sending information about the next hop to the network device without route prefix information, effectively saving a system resource occupied for route withdrawal message exchanging between the controller and the network device, and improving service processing efficiency.

公开(公告)号：US20190036822A1

公开(公告)日：2019-01-31

申请号：US16147179

申请日：2018-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan ZHUANG ,  Chang Wang ,  Nan Wu ,  Zhenbin Li ,  Hui Ni

IPC: H04L12/741 ,  H04L12/721

CPC classification number: H04L45/745 ,  H04L45/04 ,  H04L45/26 ,  H04L45/54 ,  H04L45/748

Abstract: Embodiments of the present disclosure provide a routing control method, network device, and controller. The method may include the network device obtaining a route suppression request. The method may also include determining the second routing entry. Furthermore, the method may include setting a state of the second routing entry to a non-delivery state that is used to indicate that the second routing entry does not need to be delivered to a forwarding table. In the method, the network device may have a first routing entry and a second routing entry, an address prefix of the first routing entry is a first address prefix, an address prefix of the second routing entry is a second address prefix, a network segment to which the second address prefix belongs is a subset of a network segment to which the first address prefix belongs, and a mask in the second address prefix is greater than a mask in the first address prefix.

公开(公告)号：US11895026B2

公开(公告)日：2024-02-06

申请号：US17965861

申请日：2022-10-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L45/74 ,  H04L45/302 ,  H04L45/64

CPC classification number: H04L45/74 ,  H04L45/306 ,  H04L45/64

Abstract: A packet forwarding method, an apparatus, and a system for service function chaining (SFC)-based packet forwarding are disclosed. The packet forwarding method performed by a first service function forwarding node includes receiving a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information; receiving a first packet, where a header of the first packet carries traffic characteristic information of the first packet; determining, based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet; determining target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US20210336882A1

公开(公告)日：2021-10-28

申请号：US17367911

申请日：2021-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L12/741 ,  H04L12/725 ,  H04L12/66

Abstract: The disclosure discloses a method. The method includes: determining, by a control node, routing entry information of a service function forwarding node in a SFP in the SFC, where the routing entry information records a mapping relationship between route prefix information and next hop information, the route prefix information includes a SPI and a SI, the SPI is used to identify the SFP, the SI is used to identify a location of the service function forwarding node in the SFP, and the next hop information is used to indicate a next hop node of the service function forwarding node in the SFP; and sending, by the control node, the routing entry information to the service function forwarding node, where the routing entry information is used by the service function forwarding node to generate a forwarding table used to instruct the service function forwarding node to forward a packet.

公开(公告)号：US12010030B2

公开(公告)日：2024-06-11

申请号：US17683778

申请日：2022-03-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiandeng Liang ,  Shunwan Zhuang ,  Nan Wu ,  Jianjie You

IPC: H04L47/2441 ,  H04L12/46 ,  H04L12/66 ,  H04L45/02 ,  H04L45/64 ,  H04L47/33

CPC classification number: H04L47/2441 ,  H04L12/4641 ,  H04L12/66 ,  H04L45/04 ,  H04L45/64 ,  H04L47/33

Abstract: The present disclosure discloses a flow specification (FlowSpec) message processing method. In the method, a controller forwards device interface information reported by the forwarding device; selects at least one forwarding device interface to which a FlowSpec rule needs to be applied from the received forwarding device interface information; generates an application interface rule based on the at least one forwarding device interface to which the FlowSpec rule needs to be applied; and sends a FlowSpec message to the forwarding device.

公开(公告)号：US11997016B2

公开(公告)日：2024-05-28

申请号：US17746199

申请日：2022-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Chang Wang ,  Nan Wu ,  Zhenbin Li ,  Hui Ni

IPC: H04L45/02 ,  H04L45/00 ,  H04L45/745 ,  H04L45/748

CPC classification number: H04L45/745 ,  H04L45/04 ,  H04L45/26 ,  H04L45/54 ,  H04L45/748

Abstract: Embodiments of the present disclosure provide a routing control method, network device, and controller. The method may include the network device obtaining a route suppression request. The method may also include determining the second routing entry. Furthermore, the method may include setting a state of the second routing entry to a non-delivery state that is used to indicate that the second routing entry does not need to be delivered to a forwarding table. In the method, the network device may have a first routing entry and a second routing entry, an address prefix of the first routing entry is a first address prefix, an address prefix of the second routing entry is a second address prefix, a network segment to which the second address prefix belongs is a subset of a network segment to which the first address prefix belongs, and a mask in the second address prefix is greater than a mask in the first address prefix.

公开(公告)号：US11671364B2

公开(公告)日：2023-06-06

申请号：US17367911

申请日：2021-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L45/745 ,  H04L45/302 ,  H04L12/66 ,  H04L47/17 ,  H04L41/0803

CPC classification number: H04L45/745 ,  H04L12/66 ,  H04L45/306 ,  H04L41/0803 ,  H04L47/17

Abstract: The disclosure discloses a method. The method includes: determining, by a control node, routing entry information of a service function forwarding node in a SFP in the SFC, where the routing entry information records a mapping relationship between route prefix information and next hop information, the route prefix information includes a SPI and a SI, the SPI is used to identify the SFP, the SI is used to identify a location of the service function forwarding node in the SFP, and the next hop information is used to indicate a next hop node of the service function forwarding node in the SFP; and sending, by the control node, the routing entry information to the service function forwarding node, where the routing entry information is used by the service function forwarding node to generate a forwarding table used to instruct the service function forwarding node to forward a packet.

公开(公告)号：US20220368610A1

公开(公告)日：2022-11-17

申请号：US17825759

申请日：2022-05-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shunwan Zhuang ,  Peng Zhou ,  Zhenbin Li ,  Hui Ni ,  Nan Wu

IPC: H04L43/02 ,  H04L43/026 ,  H04L43/062 ,  H04L45/00

Abstract: A control method for collecting traffic statistics includes a control node obtains a statistics collection instruction, where the statistics collection instruction is used to instruct to collect traffic statistics of a target data flow, generates a traffic statistics collection policy according to the statistics collection instruction, where the traffic statistics collection policy includes a matching identifier of the target data flow, a first command, and a second command, and sends the traffic statistics collection policy to a forwarding node. The first command is used to instruct the forwarding node to set a traffic identifier for the target data flow based on the matching identifier, the second command is used to instruct the forwarding node to add traffic generated by a target packet to a traffic statistics collection result corresponding to the traffic identifier which is used to describe the traffic of the target data flow.

公开(公告)号：US11075839B2

公开(公告)日：2021-07-27

申请号：US16236593

申请日：2018-12-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L12/741 ,  H04L12/725 ,  H04L12/66 ,  H04L12/801 ,  H04L12/24

Abstract: The disclosure application discloses a method. The method includes: determining, by a control node, routing entry information of a service function forwarding node in a SFP in the SFC, where the routing entry information records a mapping relationship between route prefix information and next hop information, the route prefix information includes a SPI and a SI, the SPI is used to identify the SFP, the SI is used to identify a location of the service function forwarding node in the SFP, and the next hop information is used to indicate a next hop node of the service function forwarding node in the SFP; and sending, by the control node, the routing entry information to the service function forwarding node, where the routing entry information is used by the service function forwarding node to generate a forwarding table used to instruct the service function forwarding node to forward a packet.