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

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

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.

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.