A method for configuring a forwarding table for user equipment, an apparatus, and a system, where an operator server receives a service access request of user equipment, establishes a correspondence for the user equipment, and sends the correspondence to an access node (AN) controller. The correspondence includes a media access control (MAC) address of the user equipment and an identifier of an operator to which the user equipment belongs. The AN controller generates a first forwarding table according to the correspondence, and sends the first forwarding table to an AN. The AN forwards, using the first forwarding table, service data of the user equipment to the operator to which the user equipment belongs.