Method for generating routing information, method for sending location information, method for forwarding packet, and device

An apparatus, comprising:

• at least one processor;
• a non-transitory computer readable storage medium storing a program that is executable by the at least one processor, the program including instructions to:
• obtain a second packet;
• add an identifier of a first network topology to the second packet and an identifier of a first resource to the second packet, to obtain a first packet, wherein the first resource is a resource in the first network topology, and the identifier of the first resource indicates to send the first packet in the first network topology using the first resource, and wherein a network topology matching the first packet is the first network topology, and the first network topology is a network topology in which the apparatus is located;
• determine first routing information based on the first network topology, wherein the first routing information is used to send the first packet in the first network topology;
• and
• send the first packet based on the first routing information.

A first network device, comprising:

• at least one processor;
• and
• a non-transitory computer readable storage medium storing a program that is executable by the at least one processor, the program including instructions to:
• receive location information from a second network device, wherein the location information comprises a location identifier and a plurality of associated flexible algorithms corresponding to the location identifier, and the location identifier identifies a location of the second network device in a network;
• generate, based on a first flexible algorithm, first routing information to the second network device, wherein the first flexible algorithm is one of the plurality of associated flexible algorithms, the first flexible algorithm corresponds to a first network topology, the first network topology is a network topology in which the first network device is located, and the first routing information is used to send a packet to the second network device in the first network topology;
• and
• generate, based on a second flexible algorithm, second routing information to the second network device, wherein the plurality of associated flexible algorithms further comprises the second flexible algorithm, the second routing information corresponds to a second network topology, the second network topology is a network topology in which the first network device is located, and the second routing information is used to send a packet to the second network device in the second network topology.