VXLAN packet transmission method, network device, and system

A method, comprising:

• receiving, by a second network device, a second packet from a first network device, wherein the second packet is encapsulated with an internet protocol version 6 (IPv6) header, and the IPV6 header carries a virtual extensible local area network identifier (VNI);
• obtaining, by the second network device, the VNI from the IPV6 header;
• decapsulating, by the second network device, the second packet to obtain a first packet, wherein the first packet does not comprise the IPV6 header;
• and
• forwarding, by the second network device, the first packet based on the VNI.

A network device comprising:

• at least one processor;
• and
• one or more memories;
• wherein the one or more memories store instructions or program code;
• and
• wherein the at least processor is configured to execute the instructions or the program code in the one or more memories, to enable the network device to:
• obtain a first packet;
• obtain a virtual extensible local area network identifier (VNI) based on the first packet, and encapsulate an internet protocol version 6 (IPv6) header in the first packet to obtain a second packet, wherein the IPV6 header carries the VNI;
• and
• send the second packet to a second network device.

A network device comprising:

• at least one processor;
• and
• one or more memories;
• wherein the one or more memories store instructions or program code;
• and
• wherein the at least processor is configured to execute the instructions or the program code in the one or more memories, to enable the network device to:
• receive a second packet from a first network device, wherein the second packet is encapsulated with an internet protocol version 6 (IPv6) header, and the IPV6 header carries a virtual extensible local area network identifier (VNI);
• obtain the VNI from the IPV6 header, and decapsulate the second packet to obtain a first packet, wherein the first packet does not comprise the IPV6 header;
• and
• forward the first packet based on the VNI.