公开(公告)号：US20240205205A1

公开(公告)日：2024-06-20

申请号：US18589743

申请日：2024-02-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianqiang HOU ,  Hongwei HE

IPC: H04L9/40 ,  H04L45/00 ,  H04L45/741

CPC classification number: H04L63/0485 ,  H04L45/34 ,  H04L45/741

Abstract: A packet sending method, a network device, and a program product are disclosed, and pertain to the field of segment routing technologies. The method includes: A network device sends a packet which includes a segment routing header SRH and a payload, the SRH includes an encrypted field and an unencrypted field, the encrypted field includes at least an encrypted SID list, and the SID list indicates a transmission path of the packet. A SID list in an SRH of an SRv6 packet transmitted over a POP network is encrypted, thereby protecting SID information from being leaked. In addition, an intermediate node on a packet transmission path only needs to decrypt an encrypted field in the SRH to determine a next hop from the SID list, and does not need to decrypt the payload. This improves forwarding efficiency of the network device and protects secure transmission of the payload.