公开(公告)号：US11582113B2

公开(公告)日：2023-02-14

申请号：US17468126

申请日：2021-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Rongrong Hua ,  Zhouyi Yu ,  Tao Peng

IPC: H04L41/5003 ,  H04L12/28 ,  H04L12/64 ,  H04L101/622

Abstract: This application provides a packet transmission method, apparatus, and system, and relates to the field of network technologies. The method is applied to a network architecture including a user terminal, a first forwarding device and a second forwarding device. A tunnel is disposed between the first forwarding device and the second forwarding device. The method includes: The first forwarding device receives packets forwarded by the user terminal in the load balancing mode, where the packets include a keepalive packet, and the first forwarding device is a standby forwarding device corresponding to the user terminal. The first forwarding device forwards the keepalive packet to the second forwarding device through the tunnel, where the second forwarding device is an active forwarding device corresponding to the user terminal.