Route management method, device and system

The invention provides a route management method, device and system, which are used for solving the technical problem that the route processing capability is limited by a hardware environment. In the method, a configuration distribution device can create a routing processing unit in at least one routing processing device when a routing management demand exists, determine a routing processing unit corresponding to each target private network to be processed, and then send configuration information of each target private network to the corresponding routing processing unit, so that the route processing unit processes the route of the corresponding target private network. In the scheme, the routing processing unit used for performing routing processing is created in at least one routing processing device in real time according to the routing management demand, and each routing processing unit can independently complete routing transceiving and routing of the corresponding target private network, therefore, the r