公开(公告)号：US20220217075A1

公开(公告)日：2022-07-07

申请号：US17701180

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingrong Xie ,  Yang Xia ,  Yisong Liu ,  Liangge Li

IPC: H04L45/16 ,  H04L45/00 ,  H04L12/46 ,  H04L45/50

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.

公开(公告)号：US20210351947A1

公开(公告)日：2021-11-11

申请号：US17382596

申请日：2021-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yisong Liu

IPC: H04L12/18 ,  H04L12/761 ,  H04L12/753 ,  H04L12/721 ,  H04L12/741

Abstract: This application provides a method and device for sending and obtaining an assert message, to increase packet processing efficiency and reduce overheads of the network device. The method includes: determining, by a network node, a plurality of assert records based on one multicast source address, where each of the plurality of assert records includes the multicast source address and one multicast group address, the plurality of assert records have the same multicast source address, and multicast group addresses included in different assert records in the plurality of assert records are different from each other; generating, by the network node, one assert message based on the plurality of assert records, where the assert message includes the multicast source address and the multicast group addresses in the plurality of assert records; and sending, by the network node, the assert message in a multicast mode.

公开(公告)号：US11909546B2

公开(公告)日：2024-02-20

申请号：US17382596

申请日：2021-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yisong Liu

IPC: H04L12/753 ,  H04L12/721 ,  H04L12/741 ,  H04L12/18 ,  H04L45/12 ,  H04L45/16 ,  H04L45/48 ,  H04L45/74

CPC classification number: H04L12/1881 ,  H04L12/1886 ,  H04L45/124 ,  H04L45/16 ,  H04L45/48 ,  H04L45/74

Abstract: This application provides a method and device for sending and obtaining an assert message, to increase packet processing efficiency and reduce overheads of the network device. The method includes: determining, by a network node, a plurality of assert records based on one multicast source address, where each of the plurality of assert records includes the multicast source address and one multicast group address, the plurality of assert records have the same multicast source address, and multicast group addresses included in different assert records in the plurality of assert records are different from each other; generating, by the network node, one assert message based on the plurality of assert records, where the assert message includes the multicast source address and the multicast group addresses in the plurality of assert records; and sending, by the network node, the assert message in a multicast mode.

公开(公告)号：US11902049B2

公开(公告)日：2024-02-13

申请号：US17468196

申请日：2021-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingrong Xie ,  Yisong Liu ,  Shunwan Zhuang ,  Naiwen Wei

IPC: H04L12/46 ,  H04L45/02 ,  H04L45/74 ,  H04L45/50

CPC classification number: H04L12/4633 ,  H04L45/04 ,  H04L45/74 ,  H04L45/50

Abstract: A bit index explicit replication (BIER) packet sending method includes receiving, by a first node in a first BIER domain, a packet from a second node in a second BIER domain, where the packet carries an identifier of the second BIER domain, determining a BIER packet sending policy corresponding to the identifier of the second BIER domain based on the identifier of the second BIER domain and according to a preconfigured BIER packet sending policy, and encapsulating and sending a BIER packet according to the BIER packet sending policy.

公开(公告)号：US20220094626A1

公开(公告)日：2022-03-24

申请号：US17541465

申请日：2021-12-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Guoqi Xu ,  Naiwen Wei ,  Yisong Liu ,  Hao Zhang

IPC: H04L45/16 ,  H04L45/02 ,  H04L45/00 ,  H04L12/18

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.

公开(公告)号：US20210409242A1

公开(公告)日：2021-12-30

申请号：US17468196

申请日：2021-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingrong Xie ,  Yisong Liu ,  Shunwan Zhuang ,  Naiwen Wei

IPC: H04L12/46 ,  H04L12/741 ,  H04L12/715

Abstract: A bit index explicit replication (BIER) packet sending method includes receiving, by a first node in a first BIER domain, a packet from a second node in a second BIER domain, where the packet carries an identifier of the second BIER domain, determining a BIER packet sending policy corresponding to the identifier of the second BIER domain based on the identifier of the second BIER domain and according to a preconfigured BIER packet sending policy, and encapsulating and sending a BIER packet according to the BIER packet sending policy.

公开(公告)号：US09608897B2

公开(公告)日：2017-03-28

申请号：US14087389

申请日：2013-11-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yunfu Yu ,  Yisong Liu

IPC: G06F15/173 ,  H04L12/715 ,  H04L12/761

CPC classification number: H04L45/04 ,  H04L45/16

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.

公开(公告)号：US09313037B2

公开(公告)日：2016-04-12

申请号：US13674689

申请日：2012-11-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yong Wei ,  Yisong Liu

IPC: H04L12/18 ,  H04L12/761 ,  H04L12/707 ,  H04L12/703

CPC classification number: H04L12/18 ,  H04L12/185 ,  H04L45/16 ,  H04L45/22 ,  H04L45/28

Abstract: Embodiments of the present invention relates to the field of communications, which complements a data forwarding method of a backup incoming interface under protocol independent multicast dual join in a PIM protocol, facilitates implementation of compatibility in various manufacturers, and reduces a restriction of a network topology on the application of the PIM protocol. The method includes: when a main incoming interface is up, forwarding, by a router, multicast data received from a backup incoming interface to the main incoming interface in a join state; and when the main incoming interface is down, before selecting a new main incoming interface and/or backup incoming interface, forwarding, by the router, the multicast data received from the backup incoming interface to all interfaces in a join state or to all other interfaces in a join state except the backup incoming interface.

Abstract translation: 本发明的实施例涉及通信的领域，其补充了在PIM协议中的协议独立的组播双重连接下的备份传入接口的数据转发方法，有助于实现各种制造商的兼容性，并且减少了网络拓扑的限制 在PIM协议的应用上。 该方法包括：当主入接口处于up状态时，路由器将从备用接入接口接收到的组播数据转发到主入接口; 当主接入接口关闭时，在选择新的主入接口和/或备用接入接口之前，路由器将从备用接入接口接收到的组播数据转发到连接状态的所有接口或所有其他接口 处于加入状态，除了备份传入接口。