Patent ID: 11936551
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC G  H

Claim 5:
6. A method comprising:
obtaining, by a network device, a border gateway protocol (BGP) route, wherein the BGP route comprises an autonomous system path attribute (AS_PATH attribute), the AS_PATH attribute comprises one or more autonomous system (AS) numbers corresponding to one or more autonomous systems, among which BGP route information is routed starting from an origin autonomous system originating routing of the BGP route information, and wherein the one or more AS numbers comprise a first AS number, the network device is located in or manages an autonomous system that has a neighboring autonomous system corresponding to a second AS number, and the first AS number is equal to the second AS number; and
determining, by the network device based on the BGP route, the first AS number and the second AS number, whether the BGP route is abnormal.