Embodiments of this application provide a data frame sending method and a network device. The method includes: A first node obtains routing label stack information of a first path, where the first path is used to transmit a service, and the routing label stack information indicates each node on the first path to establish a channel of the service on the node of the first path. The first node inserts the routing label stack information and service attribute information into a payload area of a first data frame, where the service attribute information indicates each node on the first path to configure a resource for the service. The first node sends the first data frame. In the foregoing method, routing label stack information and service attribute information are carried in a payload area of a data frame, so that service routing information can be quickly transmitted to each node on a service path, and is used by each node to quickly establish a channel for transmitting a service and configures a resource for the service, thereby shortening routing time.