公开(公告)号：US20200021558A1

公开(公告)日：2020-01-16

申请号：US16581826

申请日：2019-09-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weiping XU ,  Hua LONG ,  Hongwei HE ,  Shucheng LIU ,  Yuanlong JIANG

IPC: H04L29/12 ,  H04L12/46 ,  H04L12/721

Abstract: An embodiment provides a packet transmission method and apparatus, to resolve a problem that occurs when a packet cannot traverse a NAT device when VTEPs communicate with each other through the NAT device. The method is applied to a VXLAN including a first VTEP, a second VTEP, and a NAT device. The method includes: performing, by the first VTEP, VXLAN encapsulation on a first packet, obtaining a second packet; sending, by the first VTEP, the second packet to the second VTEP through the NAT device; and performing, by the second VTEP, VXLAN decapsulation on the received second packet, to obtain the first packet. The first packet is a packet to be sent by the first VTEP, a destination port number of the second packet is obtained based on a destination IP address of the second packet, and a source port number of the second packet is a preset port number.