AS pair verification method, apparatus, and device

An autonomous system (AS) pair verification method, applied to a network device, comprising:

• obtaining path information, wherein the path information comprises an AS pair, and the AS pair comprises two adjacent AS numbers in the path information;
• determining region information of a region to which the AS pair belongs;
• and
• verifying the AS pair based on the region information,
• wherein the path information comprises a plurality of AS numbers arranged in a preset order, and the plurality of AS numbers indicates a path corresponding to the path information;
• and the method further comprises:
• sequentially verifying all AS pairs in the path information, to verify the path corresponding to the path information, and
• wherein the method further comprises:
• upon determining that the path information comprises at least two AS pairs that fail to be verified, determining that the path corresponding to the path information fails to be verified.

An autonomous system (AS) pair verification apparatus comprising:

• at least one processor;
• and
• one or more memories coupled to the at least one processor and storing instructions that, when executed by the at least one processor, cause the apparatus to:
• obtain path information, wherein the path information comprises an AS pair, and the AS pair comprises two adjacent AS numbers in the path information;
• and
• determine region information of a region to which the AS pair belongs;
• and
• verify the AS pair based on the region information,
• wherein the verifying of the AS pair based on the region information comprises;
• verifying the AS pair based on the region information and an authorization database entry,
• wherein the instructions, when executed by the at least one processor, further cause the apparatus to:
• before the verifying of the AS pair based on the region information and the authorization database entry, obtain the authorization database entry, and
• the obtaining of the authorization database entry comprises:
• receiving a message from a server, wherein the message comprises an AS pair having a preset business relationship and a region identifier of a region to which the AS pair having the preset business relationship belongs;
• and
• generating the authorization database entry based on the message.