A method of the embodiments of the present invention includes: sending, by a source base station, identifier information to a user equipment, where the identifier information carries an identifier of a CIO configuration reason, and receiving, by the source base station, a first radio link failure indication sent by a first target base station, where the first radio link failure indication is sent by the first target base station to the source base station after the first target base station receives a Radio Resource Control protocol RRC reestablishment request message sent by the user equipment, and the RRC reestablishment request message carries the identifier of the CIO configuration reason.