Method and device for generating forwarding information

A method for generating forwarding information, comprising:

• obtaining, by a forwarding device, forwarding information, wherein the forwarding information comprises matching information and operating information, wherein the forwarding device is located in a path from a second network element to a first network element;
• receiving, by the forwarding device, a data message from the second network element;
• obtaining, by the forwarding device, an encapsulation message according to the data message and the operating information after determining that the data message matches the matching information;
• and
• sending, by the forwarding device, the encapsulation message to the first network element via the path.

A generating device, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to:
• receive a first request message for requesting first content for a first network element, wherein the first request message comprises a first content identifier;
• and
• determine that a second network element is a provider of the first content according to first registration information received from the second network element, wherein the first registration information comprises information indicating that the second network element is the provider of the first content;
• determine a first path from the second network element to the first network element according to a network topology, wherein the first path comprises a first forwarding device;
• and
• generate first forwarding information for the first forwarding device, wherein the first forwarding information comprises first matching information and first operating information, wherein the first operating information is used for instructing the first forwarding device to obtain a first encapsulation message according to a first data message after determining that the first data message matches the first matching information and to send the first encapsulation message to the first network element via the first path.

A forwarding device, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to:
• obtain forwarding information, wherein the forwarding information comprises matching information and operating information, the forwarding device is located in a path from a second network element to a first network element;
• receive a data message from the second network element;
• obtain an encapsulation message according to the data message and the operating information after determining that the data message matches the matching information;
• and
• send the encapsulation message to the first network element via the path.