ROUTE ATTRIBUTE UPDATE METHOD, NETWORK DEVICE AND SYSTEM

This application provides a route attribute update method, a network device, and a system, and belongs to the field of data communication. In the solution provided in this application, a second network device may deliver a message used for RPD to a first network device. The message includes a route policy, and the route policy includes a match condition field and an action field. When detecting that route information of a BGP route matches a target feature carried in the match condition field, the first network device may automatically update a route attribute of the BGP route based on a route attribute carried in the action field. The first network device may automatically update the route attribute of the BGP route according to the route policy included in the message delivered by the second network device, and operation and maintenance personnel does not need to perform manual configuration. Therefore, route attribute update efficiency is greatly improved, and operation and maintenance costs of a data communication system are reduced.