VXLAN configuration method, device, and system

A method for virtual extensible local area network (VXLAN) configuration implemented by a second network device, the method comprising:

• receiving, from a first network device, first Generic Autonomic Signaling Protocol (GRASP) information comprising objective information, wherein the objective information carries configuration information, wherein the configuration information comprises pieces of virtual extensible local area network tunnel end point (VTEP) device information, wherein each of the pieces comprises a VTEP device identifier and a VXLAN network identifier (VNI), and wherein the VTEP device identifier corresponds to the VNI;
• determining that the second network device is a second VTEP when a device identifier of the second network device is the same as a second VTEP device identifier comprised in second VTEP device information, wherein the second VTEP device information indicates the second VTEP;
• generating second VTEP information based on the second VTEP device information, wherein the second VTEP device information further comprises a second VNI corresponding to the second VTEP device identifier, wherein the second VTEP information comprises a second VTEP address and the second VNI, and wherein the second VTEP address is bound to the second VNI;
• and
• sending, to a third network device, second GRASP information comprising the second VTEP information to trigger the third network device to establish a VXLAN tunnel based on the second GRASP information.

A first network device comprising:

• a receiver configured to obtain configuration information comprising pieces of virtual extensible local area network tunnel end point (VTEP) device information, wherein the pieces respectively indicate VTEPs comprised in a virtual extensible local area network (VXLAN);
• a processor coupled to the receiver and configured to generate first Generic Autonomic Signaling Protocol (GRASP) information based on the configuration information obtained by the receiver, wherein the first GRASP information comprises objective information, and wherein the objective information carries the configuration information;
• and
• a transmitter coupled to the processor and configured to send the first GRASP information to a second network device to trigger the second network device to establish a VXLAN tunnel based on the first GRASP information.

A second network device comprising:

• a transmitter;
• a receiver configured to receive, from a first network device, first Generic Autonomic Signaling Protocol (GRASP) information comprising objective information, wherein the objective information carries configuration information, wherein the configuration information comprises pieces of virtual extensible local area network tunnel end point (VTEP) device information, wherein each of the pieces comprises a VTEP device identifier and a virtual extensible local area network (VXLAN) network identifier (VNI), and wherein the VTEP device identifier corresponds to the VNI;
• and
• a processor coupled to the transmitter and the receiver and configured to determine that the second network device is a second VTEP when a device identifier of the second network device is the same as a second VTEP device identifier comprised in second VTEP device information, wherein the second VTEP device information indicates the second VTEP,
• wherein the processor is further configured to generate second VTEP information based on the second VTEP device information, wherein the second VTEP device information further comprises a second VNI corresponding to the second VTEP device identifier, wherein the second VTEP information comprises a second VTEP address and the second VNI, and wherein the second VTEP address is bound to the second VNI, and
• wherein the transmitter is configured to send to a third network device, second GRASP information comprising the second VTEP information to trigger the third network device to establish a VXLAN tunnel based on the second GRASP information.