A configuration method includes: receiving, by a first device of a network, a first control message having configuration elements for activating a dynamic routing protocol in the network; configuring by the first device setup parameters for establishing sessions according to the protocol used by the first device on the basis of configuration elements included in the first message; if the configuration elements in the message include a management instruction for handling sessions according to the protocol in the network, executing by the first device the at least one management instruction; and if the configuration elements in the message include a setting for directing propagation of the configuration elements in the network, dispatching by the first device in accordance with the propagation setting at least one second control message to at least one second device of the network, which includes all or some of the configuration elements.