Method, controller and system for establishing forwarding path in network

The invention relates to the field of communication, particularly to a method for establishing a forwarding path in a network. The network includes a super controller (SC) and a plurality of domain controllers (DCs), wherein the SC manages the plurality of DCs, each of the plurality of DCs manages a domain, the method includes the following steps: the SC receives a business request message, and selects a time delay allocation mode according to the business request message; and the SC decomposes first time delay into a plurality of time delay sections according to the time delay allocation mode, sends each of the plurality of time delay sections to the DC corresponding to each time delay section, thereby triggering each of the plurality of DCs to establish a forwarding path section in the domain that the DC manages, and the SC connects the plurality of forwarding path sections established by the plurality of DCs to form a forwarding path. In addition, the invention also relates to a controller for establishing