Network service management method, apparatus, and system

A network service management apparatus, comprising:

• a memory;
• and
• a processor coupled to the memory, wherein the processor is configured to:
• receive an access request message of a to-be-served flow from a network device, wherein the access request message comprises an identifier of the to-be-served flow and an identifier of a terminal that sends the to-be-served flow;
• determine service level information of the to-be-served flow based on the identifier of the to-be-served flow and the identifier of the terminal;
• determine a transmission path of the to-be-served flow based on the service level information of the to-be-served flow and a transmission path of a being-served flow based on service level information of the being-served flow, wherein the to-be-served flow is a flow to which no network path has been allocated, and the being-served flow is a flow to which a network path has been allocated, and wherein the being-served flow is other than the to-be served flow;
• and
• send the transmission path of the to-be-served flow and the transmission path of the being-served flow to the network device.

A network service reservation apparatus, comprising:

• a memory;
• and
• a processor coupled to the memory, wherein the processor is configured to:
• send a service level agreement to a software-defined networking in a wide area network (SD-WAN) user, wherein the service level agreement comprises a service class, a target service level, a current service level, and a remaining period of service time of a flow, and the service level agreement is used to serve transmission of different flow types;
• receive a service level agreement signed by the SD-WAN user, wherein the service level agreement comprises at least one service class, and
• send the service level agreement signed by the SD-WAN user to a controller, so that the controller determines a transmission path of a flow of the SD-WAN user based on the service level agreement signed by the SD-WAN user.