A method for controlling routing information advertising, comprising: receiving, by a control device, first routing information sent by a first forwarding device, wherein the first routing information comprises an identifier of the first forwarding device; determining, by the control device, a routing path group according to a network topology; determining a first routing path according to the identifier of the first forwarding device, an identifier of a second forwarding device and the routing path group; and determining an advertising range of second routing information for the second forwarding device according to the first routing path; wherein the second routing information is routing information generated by the control device according to the first routing information, the second routing information carries the advertising range of the second routing information, the second forwarding device is a receiver of the second routing information sent by the control device, and the advertising range of the second routing information comprises an identifier of an external neighbor of the second forwarding device, the external neighbor of the second forwarding device being a device having an external neighbor relationship with the second forwarding device, for enabling the second forwarding device to advertise the second routing information to the external neighbor of the second forwarding device corresponding to the advertising range of the second routing information, wherein the determining a first routing path according to the identifier of the first forwarding device, an identifier of a second forwarding device and the routing path group, comprises: selecting a routing path comprising the identifier of the first forwarding device and the identifier of the second forwarding device from the routing path group to serve as the first routing path. receiving, by a control device, first routing information sent by a first forwarding device, wherein the first routing information comprises an identifier of the first forwarding device; determining, by the control device, a routing path group according to a network topology; determining a first routing path according to the identifier of the first forwarding device, an identifier of a second forwarding device and the routing path group; and determining an advertising range of second routing information for the second forwarding device according to the first routing path; wherein the second routing information is routing information generated by the control device according to the first routing information, the second routing information carries the advertising range of the second routing information, the second forwarding device is a receiver of the second routing information sent by the control device, and the advertising range of the second routing information comprises an identifier of an external neighbor of the second forwarding device, the external neighbor of the second forwarding device being a device having an external neighbor relationship with the second forwarding device, for enabling the second forwarding device to advertise the second routing information to the external neighbor of the second forwarding device corresponding to the advertising range of the second routing information, wherein the determining a first routing path according to the identifier of the first forwarding device, an identifier of a second forwarding device and the routing path group, comprises: selecting a routing path comprising the identifier of the first forwarding device and the identifier of the second forwarding device from the routing path group to serve as the first routing path. selecting a routing path comprising the identifier of the first forwarding device and the identifier of the second forwarding device from the routing path group to serve as the first routing path.