Device and service data control method in a communications network for the automated traffic engineering

Means are provided in the service control data, issued by management modules (7) of a communications network and for enabling the control traffic engineering modules (11, 12). The device includes i) a memory (9) storing the defined rules, each, from at least one condition representative of a network event associated with one of the traffic engineering modules (11, 12) and at least one action, representative of at least one command to be executed by the associated module, and ii) control means (3) arranged to receive service data designating an event, to extract the memory (9) to at least one rule corresponding to the event and outputting each command representative of the play which is associated with the condition representative of the event, to the traffic engineering module (11, 12 ) that is associated with this event in the extracted rule