Embodiments of the present invention provide a method and an apparatus for generating forwarding entries for devices in an optical network. The optical network includes a virtual access node AN, where the virtual AN includes a first access device, a second access device, and an access port management apparatus. The access port management apparatus acquires a virtual AN forwarding entry sent by an access management device; generates a first forwarding entry for a first device in the first access device and the second access device according to the virtual AN forwarding entry; and generates a second forwarding entry for a second device in the first access device and the second access device according to the virtual AN forwarding entry. The virtual AN may automatically generate forwarding entries for the first access device and second access device in the virtual AN according to the virtual AN forwarding entry.