| 摘要 |
Embodiments of the present invention provide an information sending method, an apparatus, and a communications system. The information sending method of the present invention includes: sending, by a controller, a forwarding indication message to a forwarder, where: the forwarding indication message includes at least two routing correspondences and a tunnel correspondence, the at least two routing correspondences include a first routing correspondence and a second routing correspondence, the first routing correspondence is mapping of a first route to a next hop identifier, the second routing correspondence is mapping of a second route to the next hop identifier, and the first route is different from the second route; and the tunnel correspondence is a correspondence of the next hop identifier to a public network tunnel. The embodiments of the present invention resolve a problem that a delivering form of a forwarding indication message that is from a control plane to a forwarding plane is not explicitly stipulated in an OpenFlow standard of an SDN. |
