公开(公告)号：US20220224633A1

公开(公告)日：2022-07-14

申请号：US17708233

申请日：2022-03-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingrong XIE ,  Naiwen WEI ,  Gang YAN ,  Jiajia DONG

IPC: H04L45/12 ,  H04L45/50 ,  H04L45/00 ,  H04L45/741

Abstract: A bit index explicit replication (BIER) forwarding entry construction method is provided. The method includes receiving, by a second network device, a first message sent by a first network device, where the first message includes a host routing prefix of the first network device, first BIER information, and second BIER information. The first BIER information includes a bit index forwarding table identifier (BIFT ID) of the first network device, the second BIER information includes a bit forwarding router identifier (BFR ID) of at least one bit forwarding router (BFR) in a first area. The second network device constructs a BIER forwarding entry based on the first BIER information, the second BIER information, and the host routing prefix.

公开(公告)号：US20240275722A1

公开(公告)日：2024-08-15

申请号：US18592595

申请日：2024-03-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingrong XIE ,  Fanghong DUAN ,  Feng ZHANG ,  Zhaoqiu DING

IPC: H04L45/00 ,  H04L45/02 ,  H04L45/74

CPC classification number: H04L45/566 ,  H04L45/04 ,  H04L45/74

Abstract: A BIER domain includes a host and a routing device that has a neighbor relationship with the host. The host duplicates a packet and forwards the packet to another host via the routing device. After receiving the packet including a BIER option, the routing device pops up, from the packet, an IPV6 extension header including the BIER option, and then sends the packet to the host. This avoids a case in which the packet received by the host includes the IPV6 extension header including the BIER option, thereby reducing a difficulty of processing the packet by the host and reducing overheads of processing the packet by the host.

公开(公告)号：US20240235985A1

公开(公告)日：2024-07-11

申请号：US18616734

申请日：2024-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuesong GENG ,  Zhenbin LI ,  Jingrong XIE

IPC: H04L45/16 ,  H04L45/00

CPC classification number: H04L45/16 ,  H04L45/34

Abstract: The present disclosure relates to multicast packet processing methods. One example method includes obtaining a first multicast packet, where destination information of the first multicast packet includes a first identifier indicating link information, a second identifier indicating a replication and forwarding operation, and a third identifier used to index destination information corresponding to a second node, obtaining a second multicast packet based on the first multicast packet and the third identifier, obtaining a third multicast packet, where destination information of the third multicast packet is destination information corresponding to a third node that is determined based on a destination information index corresponding to a multicast packet obtained after the first multicast packet is replicated, sending the second multicast packet to the second node based on the first identifier, and sending the third multicast packet to the third node based on the destination information of the multicast packet.

公开(公告)号：US20230155906A1

公开(公告)日：2023-05-18

申请号：US18156996

申请日：2023-01-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingrong XIE ,  Xuesong GENG ,  Fanghong DUAN

IPC: H04L43/0811 ,  H04L45/00 ,  H04L61/2592

CPC classification number: H04L43/0811 ,  H04L45/34 ,  H04L61/2592

Abstract: This application provides a P2MP tree connectivity detection method, a device, and a system. The method is applied to SR domain. The SR domain includes a P2MP tree. The P2MP tree includes a first node. The first node is a root node or an intermediate replication node of the P2MP tree. The method includes: The first node determines a first next-hop node of the first node based on replication branch information; and the first node sends a first request message to the first next-hop node. The first request message includes a segment identifier SID of the first next-hop node. The first request message includes a first identifier. The first identifier indicates that the first request message is for connectivity detection.

公开(公告)号：US20230081052A1

公开(公告)日：2023-03-16

申请号：US17984506

申请日：2022-11-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingrong XIE ,  Gang YAN ,  Xuesong GENG

IPC: H04L45/16 ,  H04L45/02

Abstract: This application provides a method and an apparatus for sending a multicast packet. In the method, an ingress device obtains a region identifier of a region corresponding to a received multicast packet. The ingress device obtains, based on the region identifier and a forwarding entry, an address of an intermediate device that is used to forward the multicast packet to the region. The forwarding entry includes the region identifier and the address of the intermediate device. The ingress device sends the multicast packet based on the address of the intermediate device. An intermediate device obtains, based on a multicast packet from an ingress device, a region identifier of a region corresponding to the multicast packet. The intermediate device obtains an address of a next-hop device based on the region identifier and a forwarding entry. The intermediate device sends the multicast packet based on the address of the next-hop device.

公开(公告)号：US20220141127A1

公开(公告)日：2022-05-05

申请号：US17514885

申请日：2021-10-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lingshuai LI ,  Jingrong XIE

IPC: H04L12/703 ,  H04L12/733 ,  H04L12/741

Abstract: This application provides a method for sending a BIERv6 packet and a first network device. The method includes: determining, by a first network device, that an active next-hop device for reaching a second network device is faulty, where the first network device belongs to a first area in a BIER domain, the second network device and the active next-hop device belong to a second area in the BIER domain, the active next-hop device is a border device in the second area and is configured to connect to the first area, and the first area and the second area have different protocols; and sending, by the first network device, a BIERv6 packet to a backup next-hop device for reaching the second network device, where the backup next-hop device is a border device in the second area and is configured to connect to the first area.

公开(公告)号：US20210266189A1

公开(公告)日：2021-08-26

申请号：US17241464

申请日：2021-04-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingrong XIE ,  Yang XIA

IPC: H04L12/18 ,  H04L12/46 ,  H04L12/741 ,  H04L29/08

Abstract: A packet forwarding method. The method includes: a first node configures a first identifier of a first VPN and a first IPv6 address on a control plane. The first node sends a first indication message to a second node, where the first indication message carries the first identifier and the first IPv6 address. The second node first determines, based on locally configured information about the first VPN and the first identifier in the first indication message, a second identifier that is of the second node and that satisfies a preset correspondence with the first identifier, and then establishes a correspondence between the first IPv6 address and the second identifier. The first node encapsulates, on a forwarding plane based on the first IPv6 address, a multicast data packet belonging to the first VPN, to obtain a to-be-forwarded BIER packet and sends the to-be-forwarded BIER packet.