Virtual network function VNF deployment method and apparatus

A communications apparatus, comprising:

• a receiver configured to obtain a virtual network function descriptor (VNFD), wherein the VNFD comprises input parameter information, input adaptation information, and virtual network function (VNF) descriptor information, and wherein the input parameter information comprises N pieces of management unit information and each piece of management unit information is used to describe an attribute of the management unit, and wherein the attribute of the management unit comprises a type and a name of the management unit, and wherein the input adaptation information is used to indicate a mapping relationship between the management unit and a logical management unit, and wherein and the VNF descriptor information is used to indicate to deploy a VNF on the N logical management units and N is an integer greater than or equal to 2,
• wherein the receiver is further configured to obtain N management unit identifiers, and wherein a capacity of a management unit corresponding to a management unit identifier is the same as a capacity of a fault domain corresponding to the management unit;
• and
• a processor configured to map management units corresponding to the N management unit identifiers to the N logical management units based on the input adaptation information,
• wherein the processor is further configured to create the VNF on the N logical management units based on the VNF descriptor information.

A communications apparatus, comprising:

• a processor configured to detect a first path, wherein the first path is an internal path between two logical management units that carry a virtual network function (VNF),
• wherein in response to the first path being faulty, the processor is further configured to detect a second path, wherein the second path is an external path between the two logical management units that carry the VNF,
• wherein in response to the second path being normal, the processor is further configured to randomly select, from the two logical management units that carry the VNF, one logical management unit to provide a service to the outside;
• or
• wherein in response to the second path being faulty, the processor is further configured to detect, by using a third-party network element, a path of a first logical management unit of the two logical management units that carry the VNF, and detect, by using the third-party network element, a path of a second logical management unit that carries the VNF, and
• wherein the processor is further configured to determine that a logical unit whose path to the third party network element is normal provides the service to the outside.