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公开(公告)号：US20220200820A1
公开(公告)日：2022-06-23
申请号：US17695488
申请日：2022-03-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingrong Xie , Yisong Liu , Yang Xia
Abstract: A packet sending method includes that a first network device receives a first packet from a customer edge (CE) device, where the first packet includes a first Internet Protocol (IP) version 6 (IPv6) header and a first payload, and the first IPv6 header includes a source address (SA) and a destination address (DA); determines, according to an entry, an address identifier corresponding to the SA and the DA, where the entry includes a correspondence between the SA and the DA and the address identifier; updates the first IPv6 header in the first packet to a second IPv6 header to obtain a second packet; encapsulates the second packet using the address identifier to obtain an encapsulated packet, the address identifier is located at an outer layer of the second packet; and sends the encapsulated packet to a second network device.
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公开(公告)号：US20220109623A1
公开(公告)日：2022-04-07
申请号：US17542505
申请日：2021-12-06
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Jingrong Xie , Yang Xia , Yisong Liu
IPC: H04L45/16 , H04L45/745 , H04L45/24 , H04L45/00
Abstract: This application provides a BIER packet sending method. The method includes: receiving a BIER packet that is encapsulated using an IPv6 protocol and that is sent by a second forwarding device, where the BIER packet includes an IPv6 basic header and a BIER header, a destination address field in the IPv6 basic header is a first IPv6 address of the first forwarding device; determining, based on an identifier corresponding to a first IPv6 address in a forwarding table, to perform BIER forwarding on the BIER packet, where the identifier is used to indicate that the first IPv6 address is a destination address for BIER forwarding. In the technical solution provided in this application, a node may determine, based on the identifier of the first IPv6 address, to perform BIER forwarding on the BIER packet.
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公开(公告)号：US10205652B2
公开(公告)日：2019-02-12
申请号：US15332159
申请日：2016-10-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yisong Liu , Yuanbin Yin
IPC: H04L12/707 , H04L12/761 , H04L12/703 , H04L12/741 , H04L12/24 , H04L12/26 , H04L12/18
Abstract: Embodiments of the present invention provide a path checking method, a sink node device, and a communications system. The path checking method includes: a sink node determines whether a check packet sent by an ingress node by using a check multicast tree is received within a predetermined time, where the sink node is a node connected to a receiver, the ingress node is a node connected to a multicast source, and the check multicast tree and a first multicast tree have a same transmission path and different multicast addresses; and if the sink node determines that no check packet sent by the ingress node by using the check multicast tree is received within the predetermined time, the sink node determines a path fault exists in an upstream node of the sink node in the first multicast tree.
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公开(公告)号：US11949585B2
公开(公告)日：2024-04-02
申请号：US17542505
申请日：2021-12-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jingrong Xie , Yang Xia , Yisong Liu
IPC: G06F15/173 , H04L45/00 , H04L45/16 , H04L45/24 , H04L45/745
CPC classification number: H04L45/16 , H04L45/24 , H04L45/34 , H04L45/745
Abstract: This application provides a BIER packet sending method. The method includes: receiving a BIER packet that is encapsulated using an IPv6 protocol and that is sent by a second forwarding device, where the BIER packet includes an IPv6 basic header and a BIER header, a destination address field in the IPv6 basic header is a first IPv6 address of the first forwarding device; determining, based on an identifier corresponding to a first IPv6 address in a forwarding table, to perform BIER forwarding on the BIER packet, where the identifier is used to indicate that the first IPv6 address is a destination address for BIER forwarding. In the technical solution provided in this application, a node may determine, based on the identifier of the first IPv6 address, to perform BIER forwarding on the BIER packet.
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公开(公告)号：US09647959B2
公开(公告)日：2017-05-09
申请号：US14594864
申请日：2015-01-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Weiguo Hao , Zhenbin Li , Yisong Liu
IPC: H04L12/18 , H04L12/931 , H04L12/761 , H04L29/12
CPC classification number: H04L49/201 , H04L12/185 , H04L45/16 , H04L61/2069
Abstract: Embodiments of the present invention provide a method, a device, and a system for creating a bidirectional multicast distribution tree based on an interior gateway protocol, the method includes: generating, according to a root address of a first node flooded by the first node through an IGP and a shortest path tree algorithm, a shortest path to another node with the first node as a source node, and constructing a flooding tree according to the shortest path; and when receiving layer 3 multicast group information flooded by an edge node, determining, according to the layer 3 multicast group information and a multicast group range that is supported by the first node, a flooding tree corresponding to each layer 3 multicast group, and performing pruning, according to the layer 3 multicast group information, to the flooding tree corresponding to each layer 3 multicast group, to generate a bidirectional multicast distribution tree.
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Patent Agency Ranking
公开(公告)号：US20140082161A1
公开(公告)日：2014-03-20
申请号：US14087389
申请日：2013-11-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunfu YU , Yisong Liu
IPC: H04L12/715
Abstract: The present invention discloses a method and a device for transferring a bootstrap message, and relates to the field of communications. The invention is intended to solve a problem in the prior art that a public network tunnel needs to be separately created for a bootstrap message, which consumes a tunnel resource. A technical solution provided in an embodiment of the present invention includes: receiving, by a first provider edge router, a bootstrap message sent by a bootstrap router; sending, by the first provider edge router, to a second provider edge router, a border gateway protocol BGP message including message content of the bootstrap message, so that after receiving the BGP message, the second provider edge router sends, to a customer edge router, the message content included in the BGP message. The embodiments of the present invention are applicable to a next generation multicast virtual private network.
Abstract translation: 本发明公开了一种用于传送自举消息的方法和装置，涉及通信领域。 本发明旨在解决现有技术中的问题，需要为引导消息单独地创建公共网络隧道，该消息消耗隧道资源。 本发明实施例提供的技术方案包括：由第一提供商边缘路由器接收由引导路由器发送的引导消息; 由第一提供商边缘路由器发送到第二提供商边缘路由器，边界网关协议BGP消息，其包括引导消息的消息内容，使得在接收到BGP消息之后，第二提供商边缘路由器向客户边缘路由器发送 ，消息内容包含在BGP消息中。 本发明的实施例可应用于下一代多播虚拟专用网络。
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公开(公告)号：US12063153B2
公开(公告)日：2024-08-13
申请号：US17541465
申请日：2021-12-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Guoqi Xu , Naiwen Wei , Yisong Liu , Hao Zhang
CPC classification number: H04L45/16 , H04L12/18 , H04L45/02 , H04L45/22 , H04L63/0272
Abstract: A method and apparatus for implementing multicast. When a multicast source performs route advertisement, route update is performed on a cross-DC integrated device, and a received device identifier and a received AS number are replaced with a device identifier and an AS number that are of the integrated device. In this way, when a multicast user joins the multicast source, each network device in the network can trace the multicast source based on a received route, and determine a multicast path that is from the multicast source to the multicast user. Therefore, it is possible to accurately perform, in a NG MVPN, cross-DC multicast on traffic of the multicast source.
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公开(公告)号：US11997004B2
公开(公告)日：2024-05-28
申请号：US17701180
申请日：2022-03-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingrong Xie , Yang Xia , Yisong Liu , Liangge Li
CPC classification number: H04L45/16 , H04L12/4633 , H04L45/50 , H04L45/70 , H04L45/72
Abstract: A reverse path forwarding (RPF) check method includes, after receiving a multicast data packet from a head node, a tail node may obtain a multicast source address, a multicast group address and encapsulation information that are carried in the multicast data packet. The tail node obtains, based on the multicast source address, the multicast group address, and a first correspondence, a first identifier identifying an upstream multicast hop (UMH) node corresponding to the multicast data packet. The tail node may further obtain, based on the encapsulation information of the multicast data packet and a second correspondence, a second identifier identifying the head node corresponding to the multicast data packet. After obtaining the first identifier and the second identifier, the tail node may perform an RPF check based on the first identifier and the second identifier.
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公开(公告)号：US11546267B2
公开(公告)日：2023-01-03
申请号：US17234407
申请日：2021-04-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yisong Liu
IPC: H04L47/2483 , H04L12/46 , H04L47/33 , H04L47/762 , H04L47/78 , H04L47/80
Abstract: A method for determining a designated forwarder (DF) of a multicast flow, a device, and a system are disclosed. In an Ethernet virtual private network (EVPN) scenario, a customer edge (CE) device is connected to a plurality of provider edge (PE) devices in a dual-homed or multi-homed manner. A first PE device is any one of the plurality of PE devices. After determining that the CE device connected to an Ethernet link joins a multicast group of a multicast flow, the first PE device determines bandwidth occupation statuses of a plurality of Ethernet links included in an Ethernet segment (ES) to which the Ethernet link belongs, and then determines, as a DF of the multicast flow based on the multicast flow bandwidth occupation statuses of the plurality of Ethernet links, a PE device corresponding to an Ethernet link that occupies lowest multicast flow bandwidth.
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公开(公告)号：US20220255847A1
公开(公告)日：2022-08-11
申请号：US17732100
申请日：2022-04-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jingrong Xie , Fanghong Duan , Yisong Liu , Weiwei Wang
IPC: H04L45/12 , H04L45/00 , H04L45/745 , H04L47/125
Abstract: In a packet sending method, a first network device receives a first multicast packet, and determines first information based on the first multicast packet, where the first information indicates an attribute of the first multicast packet. The first network device determines that a state of a first link interface is unavailable, and performs a modulo operation on the first information based on a second parameter, to obtain second indication information, where the second indication information indicates a second link interface through which the first network device forwards the first multicast packet, the second parameter is a quantity of link interfaces whose states are available in a first load balancing group, and the first load balancing group includes the first link interface and the second link interface. The first network device forwards the first multicast packet through the second link interface.
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