Method and corresponding agent in a management system of a network. At least one manager and the agent have at least one old Management Information Table (MIT) containing Management Information (MI) from network resources. A Management Information Module of the agent gathers Management Information (MI) from the network resources into a current MIT. A Database Handling Module of the agent, following an event, associates one manager to the event, verifies if the associated manager is associated with one old MIT, builds a Management Information Notification (MIN) from at least the current MIT, associates the associated manager with the current MIT, freezes the current MIT into a further old MIT and creates a further current MIT. A Communication Module of the agent further sends the built MIN to the associated manager.