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A core router is a router designed to operate in the Internet backbone, or core. To fulfill this role, a router must be able to support multiple telecommunications interfaces of the highest speed in use in the core Internet and must be able to forward IP packets at full speed on all of them. It must also support the routing protocols being used in the core. A core router is distinct from an edge router: edge routers sit at the edge of a backbone network and connect to core routers.
Flexible online routing method and device based on graph neural network
The application discloses a flexible online routing method and device based on a graph neural network, and belongs to the technical field of next-generation Internet system; the method comprises the following steps: constructing an agent corresponding to a routing device in a network, and defining a first reward function and a second reward function of the agent; constructing a GNN model on a core router, and training the GNN model by using a first network data set to obtain a pre-trained GNN model; calculating a reward value of a first routing scheme by using the first reward function to train the agent to obtain a pre-trained agent; calculating a reward value of a second routing scheme by using the second reward function, and fine-tuning parameters of the pre-trained agent according to the reward value of the second routing scheme; updating parameters of the pre-trained GNN model according to a second network data set, and updating a weight coefficient of the second reward function according to a performance index predicted by the pre-trained GNN model to train the fine-tuned agent. The application can enable routing devices to flexibly select routing and optimize strategies.
Owner:TSINGHUA UNIVERSITY