公开(公告)号：US20250097150A1

公开(公告)日：2025-03-20

申请号：US18962825

申请日：2024-11-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nan GENG ,  Mingqing HUANG ,  Shunwan ZHUANG

IPC: H04L45/42 ,  H04L45/00

Abstract: This application discloses a source address validation method, a network device, and a communication system. A first network device receives a first packet, where the first packet arrives at the first network device through a newly added path on which a second network device serves as a source node and the first network device serves as a destination node, and the first packet includes newly added path information indicating the newly added path. The first network device adds a source address validation (SAV) rule based on path information and the newly added path information, and the path information includes a reachable path on which the first network device serves as a destination node.

公开(公告)号：US20250007836A1

公开(公告)日：2025-01-02

申请号：US18887112

申请日：2024-09-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan ZHUANG ,  Mingqing HUANG ,  Haibo WANG ,  Shuanglong CHEN ,  Zhenbin LI ,  Nan GENG

IPC: H04L45/748 ,  H04L41/0604 ,  H04L45/42

Abstract: The technology of this application relates to a packet transmission method and a communication apparatus. The method includes a validation device obtaining an address prefix from a sending device. The validation device sends a response packet to the sending device, where the response packet indicates usage status information of the address prefix at a receiving device. In this manner, the validation device may enable, by using the response packet, the sending device to learn of the usage status information of the address prefix at the receiving device, so that the sending device processes an exception of the address prefix, to help improve accuracy of source address validation, achieve a zero false positive, and minimize a false negative.